The Tor Browser: toolkit/components/places/nsNavHistory.cpp@129ffea94266 (annotated)

toolkit/components/places/nsNavHistory.cpp@129ffea94266 (annotated)

toolkit/components/places/nsNavHistory.cpp

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 //* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include <stdio.h>
 #include "mozilla/DebugOnly.h"
 #include "nsNavHistory.h"
 #include "mozIPlacesAutoComplete.h"
 #include "nsNavBookmarks.h"
 #include "nsAnnotationService.h"
 #include "nsFaviconService.h"
 #include "nsPlacesMacros.h"
 #include "History.h"
 #include "Helpers.h"
 #include "nsTArray.h"
 #include "nsCollationCID.h"
 #include "nsILocaleService.h"
 #include "nsNetUtil.h"
 #include "nsPrintfCString.h"
 #include "nsPromiseFlatString.h"
 #include "nsString.h"
 #include "nsUnicharUtils.h"
 #include "prsystem.h"
 #include "prtime.h"
 #include "nsEscape.h"
 #include "nsIEffectiveTLDService.h"
 #include "nsIClassInfoImpl.h"
 #include "nsThreadUtils.h"
 #include "nsAppDirectoryServiceDefs.h"
 #include "nsMathUtils.h"
 #include "mozilla/storage.h"
 #include "mozilla/Preferences.h"
 #include <algorithm>
 #ifdef MOZ_XUL
 #include "nsIAutoCompleteInput.h"
 #include "nsIAutoCompletePopup.h"
 #endif
 using namespace mozilla;
 using namespace mozilla::places;
 // The maximum number of things that we will store in the recent events list
 // before calling ExpireNonrecentEvents. This number should be big enough so it
 // is very difficult to get that many unconsumed events (for example, typed but
 // never visited) in the RECENT_EVENT_THRESHOLD. Otherwise, we'll start
 // checking each one for every page visit, which will be somewhat slower.
 #define RECENT_EVENT_QUEUE_MAX_LENGTH 128
 // preference ID strings
 #define PREF_HISTORY_ENABLED                    "places.history.enabled"
 #define PREF_FREC_NUM_VISITS                    "places.frecency.numVisits"
 #define PREF_FREC_NUM_VISITS_DEF                10
 #define PREF_FREC_FIRST_BUCKET_CUTOFF           "places.frecency.firstBucketCutoff"
 #define PREF_FREC_FIRST_BUCKET_CUTOFF_DEF       4
 #define PREF_FREC_SECOND_BUCKET_CUTOFF          "places.frecency.secondBucketCutoff"
 #define PREF_FREC_SECOND_BUCKET_CUTOFF_DEF      14
 #define PREF_FREC_THIRD_BUCKET_CUTOFF           "places.frecency.thirdBucketCutoff"
 #define PREF_FREC_THIRD_BUCKET_CUTOFF_DEF       31
 #define PREF_FREC_FOURTH_BUCKET_CUTOFF          "places.frecency.fourthBucketCutoff"
 #define PREF_FREC_FOURTH_BUCKET_CUTOFF_DEF      90
 #define PREF_FREC_FIRST_BUCKET_WEIGHT           "places.frecency.firstBucketWeight"
 #define PREF_FREC_FIRST_BUCKET_WEIGHT_DEF       100
 #define PREF_FREC_SECOND_BUCKET_WEIGHT          "places.frecency.secondBucketWeight"
 #define PREF_FREC_SECOND_BUCKET_WEIGHT_DEF      70
 #define PREF_FREC_THIRD_BUCKET_WEIGHT           "places.frecency.thirdBucketWeight"
 #define PREF_FREC_THIRD_BUCKET_WEIGHT_DEF       50
 #define PREF_FREC_FOURTH_BUCKET_WEIGHT          "places.frecency.fourthBucketWeight"
 #define PREF_FREC_FOURTH_BUCKET_WEIGHT_DEF      30
 #define PREF_FREC_DEFAULT_BUCKET_WEIGHT         "places.frecency.defaultBucketWeight"
 #define PREF_FREC_DEFAULT_BUCKET_WEIGHT_DEF     10
 #define PREF_FREC_EMBED_VISIT_BONUS             "places.frecency.embedVisitBonus"
 #define PREF_FREC_EMBED_VISIT_BONUS_DEF         0
 #define PREF_FREC_FRAMED_LINK_VISIT_BONUS       "places.frecency.framedLinkVisitBonus"
 #define PREF_FREC_FRAMED_LINK_VISIT_BONUS_DEF   0
 #define PREF_FREC_LINK_VISIT_BONUS              "places.frecency.linkVisitBonus"
 #define PREF_FREC_LINK_VISIT_BONUS_DEF          100
 #define PREF_FREC_TYPED_VISIT_BONUS             "places.frecency.typedVisitBonus"
 #define PREF_FREC_TYPED_VISIT_BONUS_DEF         2000
 #define PREF_FREC_BOOKMARK_VISIT_BONUS          "places.frecency.bookmarkVisitBonus"
 #define PREF_FREC_BOOKMARK_VISIT_BONUS_DEF      75
 #define PREF_FREC_DOWNLOAD_VISIT_BONUS          "places.frecency.downloadVisitBonus"
 #define PREF_FREC_DOWNLOAD_VISIT_BONUS_DEF      0
 #define PREF_FREC_PERM_REDIRECT_VISIT_BONUS     "places.frecency.permRedirectVisitBonus"
 #define PREF_FREC_PERM_REDIRECT_VISIT_BONUS_DEF 0
 #define PREF_FREC_TEMP_REDIRECT_VISIT_BONUS     "places.frecency.tempRedirectVisitBonus"
 #define PREF_FREC_TEMP_REDIRECT_VISIT_BONUS_DEF 0
 #define PREF_FREC_DEFAULT_VISIT_BONUS           "places.frecency.defaultVisitBonus"
 #define PREF_FREC_DEFAULT_VISIT_BONUS_DEF       0
 #define PREF_FREC_UNVISITED_BOOKMARK_BONUS      "places.frecency.unvisitedBookmarkBonus"
 #define PREF_FREC_UNVISITED_BOOKMARK_BONUS_DEF  140
 #define PREF_FREC_UNVISITED_TYPED_BONUS         "places.frecency.unvisitedTypedBonus"
 #define PREF_FREC_UNVISITED_TYPED_BONUS_DEF     200
 // In order to avoid calling PR_now() too often we use a cached "now" value
 // for repeating stuff.  These are milliseconds between "now" cache refreshes.
 #define RENEW_CACHED_NOW_TIMEOUT ((int32_t)3 * PR_MSEC_PER_SEC)
 static const int64_t USECS_PER_DAY = (int64_t)PR_USEC_PER_SEC * 60 * 60 * 24;
 // character-set annotation
 #define CHARSET_ANNO NS_LITERAL_CSTRING("URIProperties/characterSet")
 // These macros are used when splitting history by date.
 // These are the day containers and catch-all final container.
 #define HISTORY_ADDITIONAL_DATE_CONT_NUM 3
 // We use a guess of the number of months considering all of them 30 days
 // long, but we split only the last 6 months.
 #define HISTORY_DATE_CONT_NUM(_daysFromOldestVisit) \
   (HISTORY_ADDITIONAL_DATE_CONT_NUM + \
    std::min(6, (int32_t)ceilf((float)_daysFromOldestVisit/30)))
 // Max number of containers, used to initialize the params hash.
 #define HISTORY_DATE_CONT_MAX 10
 // Initial size of the embed visits cache.
 #define EMBED_VISITS_INITIAL_CACHE_SIZE 128
 // Initial size of the recent events caches.
 #define RECENT_EVENTS_INITIAL_CACHE_SIZE 128
 // Observed topics.
 #ifdef MOZ_XUL
 #define TOPIC_AUTOCOMPLETE_FEEDBACK_INCOMING "autocomplete-will-enter-text"
 #endif
 #define TOPIC_IDLE_DAILY "idle-daily"
 #define TOPIC_PREF_CHANGED "nsPref:changed"
 #define TOPIC_PROFILE_TEARDOWN "profile-change-teardown"
 #define TOPIC_PROFILE_CHANGE "profile-before-change"
 static const char* kObservedPrefs[] = {
   PREF_HISTORY_ENABLED
 , PREF_FREC_NUM_VISITS
 , PREF_FREC_FIRST_BUCKET_CUTOFF
 , PREF_FREC_SECOND_BUCKET_CUTOFF
 , PREF_FREC_THIRD_BUCKET_CUTOFF
 , PREF_FREC_FOURTH_BUCKET_CUTOFF
 , PREF_FREC_FIRST_BUCKET_WEIGHT
 , PREF_FREC_SECOND_BUCKET_WEIGHT
 , PREF_FREC_THIRD_BUCKET_WEIGHT
 , PREF_FREC_FOURTH_BUCKET_WEIGHT
 , PREF_FREC_DEFAULT_BUCKET_WEIGHT
 , PREF_FREC_EMBED_VISIT_BONUS
 , PREF_FREC_FRAMED_LINK_VISIT_BONUS
 , PREF_FREC_LINK_VISIT_BONUS
 , PREF_FREC_TYPED_VISIT_BONUS
 , PREF_FREC_BOOKMARK_VISIT_BONUS
 , PREF_FREC_DOWNLOAD_VISIT_BONUS
 , PREF_FREC_PERM_REDIRECT_VISIT_BONUS
 , PREF_FREC_TEMP_REDIRECT_VISIT_BONUS
 , PREF_FREC_DEFAULT_VISIT_BONUS
 , PREF_FREC_UNVISITED_BOOKMARK_BONUS
 , PREF_FREC_UNVISITED_TYPED_BONUS
 , nullptr
 };
 NS_IMPL_ADDREF(nsNavHistory)
 NS_IMPL_RELEASE(nsNavHistory)
 NS_IMPL_CLASSINFO(nsNavHistory, nullptr, nsIClassInfo::SINGLETON,
                   NS_NAVHISTORYSERVICE_CID)
 NS_INTERFACE_MAP_BEGIN(nsNavHistory)
   NS_INTERFACE_MAP_ENTRY(nsINavHistoryService)
   NS_INTERFACE_MAP_ENTRY(nsIBrowserHistory)
   NS_INTERFACE_MAP_ENTRY(nsIObserver)
   NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
   NS_INTERFACE_MAP_ENTRY(nsPIPlacesDatabase)
   NS_INTERFACE_MAP_ENTRY(nsPIPlacesHistoryListenersNotifier)
   NS_INTERFACE_MAP_ENTRY(mozIStorageVacuumParticipant)
   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsINavHistoryService)
   NS_IMPL_QUERY_CLASSINFO(nsNavHistory)
 NS_INTERFACE_MAP_END
 // We don't care about flattening everything
 NS_IMPL_CI_INTERFACE_GETTER(nsNavHistory,
                             nsINavHistoryService,
                             nsIBrowserHistory)
 namespace {
 static int64_t GetSimpleBookmarksQueryFolder(
     const nsCOMArray<nsNavHistoryQuery>& aQueries,
     nsNavHistoryQueryOptions* aOptions);
 static void ParseSearchTermsFromQueries(const nsCOMArray<nsNavHistoryQuery>& aQueries,
                                         nsTArray<nsTArray<nsString>*>* aTerms);
 void GetTagsSqlFragment(int64_t aTagsFolder,
                         const nsACString& aRelation,
                         bool aHasSearchTerms,
                         nsACString& _sqlFragment) {
   if (!aHasSearchTerms)
     _sqlFragment.AssignLiteral("null");
   else {
     // This subquery DOES NOT order tags for performance reasons.
     _sqlFragment.Assign(NS_LITERAL_CSTRING(
          "(SELECT GROUP_CONCAT(t_t.title, ',') "
            "FROM moz_bookmarks b_t "
            "JOIN moz_bookmarks t_t ON t_t.id = +b_t.parent  "
            "WHERE b_t.fk = ") + aRelation + NS_LITERAL_CSTRING(" "
            "AND t_t.parent = ") +
            nsPrintfCString("%lld", aTagsFolder) + NS_LITERAL_CSTRING(" "
          ")"));
   }
   _sqlFragment.AppendLiteral(" AS tags ");
 }
 /**
  * This class sets begin/end of batch updates to correspond to C++ scopes so
  * we can be sure end always gets called.
  */
 class UpdateBatchScoper
 {
 public:
   UpdateBatchScoper(nsNavHistory& aNavHistory) : mNavHistory(aNavHistory)
   {
     mNavHistory.BeginUpdateBatch();
   }
   ~UpdateBatchScoper()
   {
     mNavHistory.EndUpdateBatch();
   }
 protected:
   nsNavHistory& mNavHistory;
 };
 } // anonymouse namespace
 // Queries rows indexes to bind or get values, if adding a new one, be sure to
 // update nsNavBookmarks statements and its kGetChildrenIndex_* constants
 const int32_t nsNavHistory::kGetInfoIndex_PageID = 0;
 const int32_t nsNavHistory::kGetInfoIndex_URL = 1;
 const int32_t nsNavHistory::kGetInfoIndex_Title = 2;
 const int32_t nsNavHistory::kGetInfoIndex_RevHost = 3;
 const int32_t nsNavHistory::kGetInfoIndex_VisitCount = 4;
 const int32_t nsNavHistory::kGetInfoIndex_VisitDate = 5;
 const int32_t nsNavHistory::kGetInfoIndex_FaviconURL = 6;
 const int32_t nsNavHistory::kGetInfoIndex_ItemId = 7;
 const int32_t nsNavHistory::kGetInfoIndex_ItemDateAdded = 8;
 const int32_t nsNavHistory::kGetInfoIndex_ItemLastModified = 9;
 const int32_t nsNavHistory::kGetInfoIndex_ItemParentId = 10;
 const int32_t nsNavHistory::kGetInfoIndex_ItemTags = 11;
 const int32_t nsNavHistory::kGetInfoIndex_Frecency = 12;
 const int32_t nsNavHistory::kGetInfoIndex_Hidden = 13;
 const int32_t nsNavHistory::kGetInfoIndex_Guid = 14;
 PLACES_FACTORY_SINGLETON_IMPLEMENTATION(nsNavHistory, gHistoryService)
 nsNavHistory::nsNavHistory()
   : mBatchLevel(0)
   , mBatchDBTransaction(nullptr)
   , mCachedNow(0)
   , mRecentTyped(RECENT_EVENTS_INITIAL_CACHE_SIZE)
   , mRecentLink(RECENT_EVENTS_INITIAL_CACHE_SIZE)
   , mRecentBookmark(RECENT_EVENTS_INITIAL_CACHE_SIZE)
   , mEmbedVisits(EMBED_VISITS_INITIAL_CACHE_SIZE)
   , mHistoryEnabled(true)
   , mNumVisitsForFrecency(10)
   , mTagsFolder(-1)
   , mDaysOfHistory(-1)
   , mLastCachedStartOfDay(INT64_MAX)
   , mLastCachedEndOfDay(0)
   , mCanNotify(true)
   , mCacheObservers("history-observers")
 {
   NS_ASSERTION(!gHistoryService,
                "Attempting to create two instances of the service!");
   gHistoryService = this;
 }
 nsNavHistory::~nsNavHistory()
 {
   // remove the static reference to the service. Check to make sure its us
   // in case somebody creates an extra instance of the service.
   NS_ASSERTION(gHistoryService == this,
                "Deleting a non-singleton instance of the service");
   if (gHistoryService == this)
     gHistoryService = nullptr;
 }
 nsresult
 nsNavHistory::Init()
 {
   LoadPrefs();
   mDB = Database::GetDatabase();
   NS_ENSURE_STATE(mDB);
   /*****************************************************************************
    *** IMPORTANT NOTICE!
    ***
    *** Nothing after these add observer calls should return anything but NS_OK.
    *** If a failure code is returned, this nsNavHistory object will be held onto
    *** by the observer service and the preference service.
    ****************************************************************************/
   // Observe preferences changes.
   Preferences::AddWeakObservers(this, kObservedPrefs);
   nsCOMPtr<nsIObserverService> obsSvc = services::GetObserverService();
   if (obsSvc) {
     (void)obsSvc->AddObserver(this, TOPIC_PLACES_CONNECTION_CLOSED, true);
     (void)obsSvc->AddObserver(this, TOPIC_IDLE_DAILY, true);
 #ifdef MOZ_XUL
     (void)obsSvc->AddObserver(this, TOPIC_AUTOCOMPLETE_FEEDBACK_INCOMING, true);
 #endif
   }
   // Don't add code that can fail here! Do it up above, before we add our
   // observers.
   return NS_OK;
 }
 NS_IMETHODIMP
 nsNavHistory::GetDatabaseStatus(uint16_t *aDatabaseStatus)
 {
   NS_ENSURE_ARG_POINTER(aDatabaseStatus);
   *aDatabaseStatus = mDB->GetDatabaseStatus();
   return NS_OK;
 }
 uint32_t
 nsNavHistory::GetRecentFlags(nsIURI *aURI)
 {
   uint32_t result = 0;
   nsAutoCString spec;
   nsresult rv = aURI->GetSpec(spec);
   NS_WARN_IF_FALSE(NS_SUCCEEDED(rv), "Unable to get aURI's spec");
   if (NS_SUCCEEDED(rv)) {
     if (CheckIsRecentEvent(&mRecentTyped, spec))
       result |= RECENT_TYPED;
     if (CheckIsRecentEvent(&mRecentLink, spec))
       result |= RECENT_ACTIVATED;
     if (CheckIsRecentEvent(&mRecentBookmark, spec))
       result |= RECENT_BOOKMARKED;
   }
   return result;
 }
 nsresult
 nsNavHistory::GetIdForPage(nsIURI* aURI,
                            int64_t* _pageId,
                            nsCString& _GUID)
 {
   *_pageId = 0;
   nsCOMPtr<mozIStorageStatement> stmt = mDB->GetStatement(
     "SELECT id, url, title, rev_host, visit_count, guid "
     "FROM moz_places "
     "WHERE url = :page_url "
   );
   NS_ENSURE_STATE(stmt);
   mozStorageStatementScoper scoper(stmt);
   nsresult rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("page_url"), aURI);
   NS_ENSURE_SUCCESS(rv, rv);
   bool hasEntry = false;
   rv = stmt->ExecuteStep(&hasEntry);
   NS_ENSURE_SUCCESS(rv, rv);
   if (hasEntry) {
     rv = stmt->GetInt64(0, _pageId);
     NS_ENSURE_SUCCESS(rv, rv);
     rv = stmt->GetUTF8String(5, _GUID);
     NS_ENSURE_SUCCESS(rv, rv);
   }
   return NS_OK;
 }
 nsresult
 nsNavHistory::GetOrCreateIdForPage(nsIURI* aURI,
                                    int64_t* _pageId,
                                    nsCString& _GUID)
 {
   nsresult rv = GetIdForPage(aURI, _pageId, _GUID);
   NS_ENSURE_SUCCESS(rv, rv);
   if (*_pageId != 0) {
     return NS_OK;
   }
   // Create a new hidden, untyped and unvisited entry.
   nsCOMPtr<mozIStorageStatement> stmt = mDB->GetStatement(
     "INSERT OR IGNORE INTO moz_places (url, rev_host, hidden, frecency, guid) "
     "VALUES (:page_url, :rev_host, :hidden, :frecency, GENERATE_GUID()) "
   );
   NS_ENSURE_STATE(stmt);
   mozStorageStatementScoper scoper(stmt);
   rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("page_url"), aURI);
   NS_ENSURE_SUCCESS(rv, rv);
   // host (reversed with trailing period)
   nsAutoString revHost;
   rv = GetReversedHostname(aURI, revHost);
   // Not all URI types have hostnames, so this is optional.
   if (NS_SUCCEEDED(rv)) {
     rv = stmt->BindStringByName(NS_LITERAL_CSTRING("rev_host"), revHost);
   } else {
     rv = stmt->BindNullByName(NS_LITERAL_CSTRING("rev_host"));
   }
   NS_ENSURE_SUCCESS(rv, rv);
   rv = stmt->BindInt32ByName(NS_LITERAL_CSTRING("hidden"), 1);
   NS_ENSURE_SUCCESS(rv, rv);
   nsAutoCString spec;
   rv = aURI->GetSpec(spec);
   NS_ENSURE_SUCCESS(rv, rv);
   rv = stmt->BindInt32ByName(NS_LITERAL_CSTRING("frecency"),
                              IsQueryURI(spec) ? 0 : -1);
   NS_ENSURE_SUCCESS(rv, rv);
   rv = stmt->Execute();
   NS_ENSURE_SUCCESS(rv, rv);
   {
     nsCOMPtr<mozIStorageStatement> getIdStmt = mDB->GetStatement(
       "SELECT id, guid FROM moz_places WHERE url = :page_url "
     );
     NS_ENSURE_STATE(getIdStmt);
     mozStorageStatementScoper getIdScoper(getIdStmt);
     rv = URIBinder::Bind(getIdStmt, NS_LITERAL_CSTRING("page_url"), aURI);
     NS_ENSURE_SUCCESS(rv, rv);
     bool hasResult = false;
     rv = getIdStmt->ExecuteStep(&hasResult);
     NS_ENSURE_SUCCESS(rv, rv);
     NS_ASSERTION(hasResult, "hasResult is false but the call succeeded?");
     *_pageId = getIdStmt->AsInt64(0);
     rv = getIdStmt->GetUTF8String(1, _GUID);
     NS_ENSURE_SUCCESS(rv, rv);
   }
   return NS_OK;
 }
 void
 nsNavHistory::LoadPrefs()
 {
   // History preferences.
   mHistoryEnabled = Preferences::GetBool(PREF_HISTORY_ENABLED, true);
   // Frecency preferences.
 #define FRECENCY_PREF(_prop, _pref) \
   _prop = Preferences::GetInt(_pref, _pref##_DEF)
   FRECENCY_PREF(mNumVisitsForFrecency,     PREF_FREC_NUM_VISITS);
   FRECENCY_PREF(mFirstBucketCutoffInDays,  PREF_FREC_FIRST_BUCKET_CUTOFF);
   FRECENCY_PREF(mSecondBucketCutoffInDays, PREF_FREC_SECOND_BUCKET_CUTOFF);
   FRECENCY_PREF(mThirdBucketCutoffInDays,  PREF_FREC_THIRD_BUCKET_CUTOFF);
   FRECENCY_PREF(mFourthBucketCutoffInDays, PREF_FREC_FOURTH_BUCKET_CUTOFF);
   FRECENCY_PREF(mEmbedVisitBonus,          PREF_FREC_EMBED_VISIT_BONUS);
   FRECENCY_PREF(mFramedLinkVisitBonus,     PREF_FREC_FRAMED_LINK_VISIT_BONUS);
   FRECENCY_PREF(mLinkVisitBonus,           PREF_FREC_LINK_VISIT_BONUS);
   FRECENCY_PREF(mTypedVisitBonus,          PREF_FREC_TYPED_VISIT_BONUS);
   FRECENCY_PREF(mBookmarkVisitBonus,       PREF_FREC_BOOKMARK_VISIT_BONUS);
   FRECENCY_PREF(mDownloadVisitBonus,       PREF_FREC_DOWNLOAD_VISIT_BONUS);
   FRECENCY_PREF(mPermRedirectVisitBonus,   PREF_FREC_PERM_REDIRECT_VISIT_BONUS);
   FRECENCY_PREF(mTempRedirectVisitBonus,   PREF_FREC_TEMP_REDIRECT_VISIT_BONUS);
   FRECENCY_PREF(mDefaultVisitBonus,        PREF_FREC_DEFAULT_VISIT_BONUS);
   FRECENCY_PREF(mUnvisitedBookmarkBonus,   PREF_FREC_UNVISITED_BOOKMARK_BONUS);
   FRECENCY_PREF(mUnvisitedTypedBonus,      PREF_FREC_UNVISITED_TYPED_BONUS);
   FRECENCY_PREF(mFirstBucketWeight,        PREF_FREC_FIRST_BUCKET_WEIGHT);
   FRECENCY_PREF(mSecondBucketWeight,       PREF_FREC_SECOND_BUCKET_WEIGHT);
   FRECENCY_PREF(mThirdBucketWeight,        PREF_FREC_THIRD_BUCKET_WEIGHT);
   FRECENCY_PREF(mFourthBucketWeight,       PREF_FREC_FOURTH_BUCKET_WEIGHT);
   FRECENCY_PREF(mDefaultWeight,            PREF_FREC_DEFAULT_BUCKET_WEIGHT);
 #undef FRECENCY_PREF
 }
 void
 nsNavHistory::NotifyOnVisit(nsIURI* aURI,
                           int64_t aVisitID,
                           PRTime aTime,
                           int64_t referringVisitID,
                           int32_t aTransitionType,
                           const nsACString& aGUID,
                           bool aHidden)
 {
   MOZ_ASSERT(!aGUID.IsEmpty());
   // If there's no history, this visit will surely add a day.  If the visit is
   // added before or after the last cached day, the day count may have changed.
   // Otherwise adding multiple visits in the same day should not invalidate
   // the cache.
   if (mDaysOfHistory == 0) {
     mDaysOfHistory = 1;
   } else if (aTime > mLastCachedEndOfDay || aTime < mLastCachedStartOfDay) {
     mDaysOfHistory = -1;
   }
   NOTIFY_OBSERVERS(mCanNotify, mCacheObservers, mObservers,
                    nsINavHistoryObserver,
                    OnVisit(aURI, aVisitID, aTime, 0,
                            referringVisitID, aTransitionType, aGUID, aHidden));
 }
 void
 nsNavHistory::NotifyTitleChange(nsIURI* aURI,
                                 const nsString& aTitle,
                                 const nsACString& aGUID)
 {
   MOZ_ASSERT(!aGUID.IsEmpty());
   NOTIFY_OBSERVERS(mCanNotify, mCacheObservers, mObservers,
                    nsINavHistoryObserver, OnTitleChanged(aURI, aTitle, aGUID));
 }
 void
 nsNavHistory::NotifyFrecencyChanged(nsIURI* aURI,
                                     int32_t aNewFrecency,
                                     const nsACString& aGUID,
                                     bool aHidden,
                                     PRTime aLastVisitDate)
 {
   MOZ_ASSERT(!aGUID.IsEmpty());
   NOTIFY_OBSERVERS(mCanNotify, mCacheObservers, mObservers,
                    nsINavHistoryObserver,
                    OnFrecencyChanged(aURI, aNewFrecency, aGUID, aHidden,
                                      aLastVisitDate));
 }
 void
 nsNavHistory::NotifyManyFrecenciesChanged()
 {
   NOTIFY_OBSERVERS(mCanNotify, mCacheObservers, mObservers,
                    nsINavHistoryObserver,
                    OnManyFrecenciesChanged());
 }
 namespace {
 class FrecencyNotification : public nsRunnable
 {
 public:
   FrecencyNotification(const nsACString& aSpec,
                        int32_t aNewFrecency,
                        const nsACString& aGUID,
                        bool aHidden,
                        PRTime aLastVisitDate)
     : mSpec(aSpec)
     , mNewFrecency(aNewFrecency)
     , mGUID(aGUID)
     , mHidden(aHidden)
     , mLastVisitDate(aLastVisitDate)
   {
   }
   NS_IMETHOD Run()
   {
     MOZ_ASSERT(NS_IsMainThread(), "Must be called on the main thread");
     nsNavHistory* navHistory = nsNavHistory::GetHistoryService();
     if (navHistory) {
       nsCOMPtr<nsIURI> uri;
       (void)NS_NewURI(getter_AddRefs(uri), mSpec);
       navHistory->NotifyFrecencyChanged(uri, mNewFrecency, mGUID, mHidden,
                                         mLastVisitDate);
     }
     return NS_OK;
   }
 private:
   nsCString mSpec;
   int32_t mNewFrecency;
   nsCString mGUID;
   bool mHidden;
   PRTime mLastVisitDate;
 };
 } // anonymous namespace
 void
 nsNavHistory::DispatchFrecencyChangedNotification(const nsACString& aSpec,
                                                   int32_t aNewFrecency,
                                                   const nsACString& aGUID,
                                                   bool aHidden,
                                                   PRTime aLastVisitDate) const
 {
   nsCOMPtr<nsIRunnable> notif = new FrecencyNotification(aSpec, aNewFrecency,
                                                          aGUID, aHidden,
                                                          aLastVisitDate);
   (void)NS_DispatchToMainThread(notif);
 }
 int32_t
 nsNavHistory::GetDaysOfHistory() {
   MOZ_ASSERT(NS_IsMainThread(), "This can only be called on the main thread");
   if (mDaysOfHistory != -1)
     return mDaysOfHistory;
   // SQLite doesn't have a CEIL() function, so we must do that later.
   // We should also take into account timers resolution, that may be as bad as
   // 16ms on Windows, so in some cases the difference may be 0, if the
   // check is done near the visit.  Thus remember to check for NULL separately.
   nsCOMPtr<mozIStorageStatement> stmt = mDB->GetStatement(
     "SELECT CAST(( "
         "strftime('%s','now','localtime','utc') - "
         "(SELECT MIN(visit_date)/1000000 FROM moz_historyvisits) "
       ") AS DOUBLE) "
     "/86400, "
     "strftime('%s','now','localtime','+1 day','start of day','utc') * 1000000"
   );
   NS_ENSURE_TRUE(stmt, 0);
   mozStorageStatementScoper scoper(stmt);
   bool hasResult;
   if (NS_SUCCEEDED(stmt->ExecuteStep(&hasResult)) && hasResult) {
     // If we get NULL, then there are no visits, otherwise there must always be
     // at least 1 day of history.
     bool hasNoVisits;
     (void)stmt->GetIsNull(0, &hasNoVisits);
     mDaysOfHistory = hasNoVisits ?
 : std::max(1, static_cast<int32_t>(ceil(stmt->AsDouble(0))));
     mLastCachedStartOfDay =
       NormalizeTime(nsINavHistoryQuery::TIME_RELATIVE_TODAY, 0);
     mLastCachedEndOfDay = stmt->AsInt64(1) - 1; // Start of tomorrow - 1.
   }
   return mDaysOfHistory;
 }
 PRTime
 nsNavHistory::GetNow()
 {
   if (!mCachedNow) {
     mCachedNow = PR_Now();
     if (!mExpireNowTimer)
       mExpireNowTimer = do_CreateInstance("@mozilla.org/timer;1");
     if (mExpireNowTimer)
       mExpireNowTimer->InitWithFuncCallback(expireNowTimerCallback, this,
                                             RENEW_CACHED_NOW_TIMEOUT,
                                             nsITimer::TYPE_ONE_SHOT);
   }
   return mCachedNow;
 }
 void nsNavHistory::expireNowTimerCallback(nsITimer* aTimer, void* aClosure)
 {
   nsNavHistory *history = static_cast<nsNavHistory *>(aClosure);
   if (history) {
     history->mCachedNow = 0;
     history->mExpireNowTimer = 0;
   }
 }
 /**
  * Code borrowed from mozilla/xpfe/components/history/src/nsGlobalHistory.cpp
  * Pass in a pre-normalized now and a date, and we'll find the difference since
  * midnight on each of the days.
  */
 static PRTime
 NormalizeTimeRelativeToday(PRTime aTime)
 {
   // round to midnight this morning
   PRExplodedTime explodedTime;
   PR_ExplodeTime(aTime, PR_LocalTimeParameters, &explodedTime);
   // set to midnight (0:00)
   explodedTime.tm_min =
     explodedTime.tm_hour =
     explodedTime.tm_sec =
     explodedTime.tm_usec = 0;
   return PR_ImplodeTime(&explodedTime);
 }
 // nsNavHistory::NormalizeTime
 //
 //    Converts a nsINavHistoryQuery reference+offset time into a PRTime
 //    relative to the epoch.
 //
 //    It is important that this function NOT use the current time optimization.
 //    It is called to update queries, and we really need to know what right
 //    now is because those incoming values will also have current times that
 //    we will have to compare against.
 PRTime // static
 nsNavHistory::NormalizeTime(uint32_t aRelative, PRTime aOffset)
 {
   PRTime ref;
   switch (aRelative)
   {
     case nsINavHistoryQuery::TIME_RELATIVE_EPOCH:
       return aOffset;
     case nsINavHistoryQuery::TIME_RELATIVE_TODAY:
       ref = NormalizeTimeRelativeToday(PR_Now());
       break;
     case nsINavHistoryQuery::TIME_RELATIVE_NOW:
       ref = PR_Now();
       break;
     default:
       NS_NOTREACHED("Invalid relative time");
       return 0;
   }
   return ref + aOffset;
 }
 // nsNavHistory::GetUpdateRequirements
 //
 //    Returns conditions for query update.
 //
 //    QUERYUPDATE_TIME:
 //      This query is only limited by an inclusive time range on the first
 //      query object. The caller can quickly evaluate the time itself if it
 //      chooses. This is even simpler than "simple" below.
 //    QUERYUPDATE_SIMPLE:
 //      This query is evaluatable using EvaluateQueryForNode to do live
 //      updating.
 //    QUERYUPDATE_COMPLEX:
 //      This query is not evaluatable using EvaluateQueryForNode. When something
 //      happens that this query updates, you will need to re-run the query.
 //    QUERYUPDATE_COMPLEX_WITH_BOOKMARKS:
 //      A complex query that additionally has dependence on bookmarks. All
 //      bookmark-dependent queries fall under this category.
 //
 //    aHasSearchTerms will be set to true if the query has any dependence on
 //    keywords. When there is no dependence on keywords, we can handle title
 //    change operations as simple instead of complex.
 uint32_t
 nsNavHistory::GetUpdateRequirements(const nsCOMArray<nsNavHistoryQuery>& aQueries,
                                     nsNavHistoryQueryOptions* aOptions,
                                     bool* aHasSearchTerms)
 {
   NS_ASSERTION(aQueries.Count() > 0, "Must have at least one query");
   // first check if there are search terms
   *aHasSearchTerms = false;
   int32_t i;
   for (i = 0; i < aQueries.Count(); i ++) {
     aQueries[i]->GetHasSearchTerms(aHasSearchTerms);
     if (*aHasSearchTerms)
       break;
   }
   bool nonTimeBasedItems = false;
   bool domainBasedItems = false;
   for (i = 0; i < aQueries.Count(); i ++) {
     nsNavHistoryQuery* query = aQueries[i];
     if (query->Folders().Length() > 0 ||
         query->OnlyBookmarked() ||
         query->Tags().Length() > 0) {
       return QUERYUPDATE_COMPLEX_WITH_BOOKMARKS;
     }
     // Note: we don't currently have any complex non-bookmarked items, but these
     // are expected to be added. Put detection of these items here.
     if (!query->SearchTerms().IsEmpty() ||
         !query->Domain().IsVoid() ||
         query->Uri() != nullptr)
       nonTimeBasedItems = true;
     if (! query->Domain().IsVoid())
       domainBasedItems = true;
   }
   if (aOptions->ResultType() ==
       nsINavHistoryQueryOptions::RESULTS_AS_TAG_QUERY)
     return QUERYUPDATE_COMPLEX_WITH_BOOKMARKS;
   // Whenever there is a maximum number of results,
   // and we are not a bookmark query we must requery. This
   // is because we can't generally know if any given addition/change causes
   // the item to be in the top N items in the database.
   if (aOptions->MaxResults() > 0)
     return QUERYUPDATE_COMPLEX;
   if (aQueries.Count() == 1 && domainBasedItems)
     return QUERYUPDATE_HOST;
   if (aQueries.Count() == 1 && !nonTimeBasedItems)
     return QUERYUPDATE_TIME;
   return QUERYUPDATE_SIMPLE;
 }
 // nsNavHistory::EvaluateQueryForNode
 //
 //    This runs the node through the given queries to see if satisfies the
 //    query conditions. Not every query parameters are handled by this code,
 //    but we handle the most common ones so that performance is better.
 //
 //    We assume that the time on the node is the time that we want to compare.
 //    This is not necessarily true because URL nodes have the last access time,
 //    which is not necessarily the same. However, since this is being called
 //    to update the list, we assume that the last access time is the current
 //    access time that we are being asked to compare so it works out.
 //
 //    Returns true if node matches the query, false if not.
 bool
 nsNavHistory::EvaluateQueryForNode(const nsCOMArray<nsNavHistoryQuery>& aQueries,
                                    nsNavHistoryQueryOptions* aOptions,
                                    nsNavHistoryResultNode* aNode)
 {
   // lazily created from the node's string when we need to match URIs
   nsCOMPtr<nsIURI> nodeUri;
   // --- hidden ---
   if (aNode->mHidden && !aOptions->IncludeHidden())
     return false;
   for (int32_t i = 0; i < aQueries.Count(); i ++) {
     bool hasIt;
     nsCOMPtr<nsNavHistoryQuery> query = aQueries[i];
     // --- begin time ---
     query->GetHasBeginTime(&hasIt);
     if (hasIt) {
       PRTime beginTime = NormalizeTime(query->BeginTimeReference(),
                                        query->BeginTime());
       if (aNode->mTime < beginTime)
         continue; // before our time range
     }
     // --- end time ---
     query->GetHasEndTime(&hasIt);
     if (hasIt) {
       PRTime endTime = NormalizeTime(query->EndTimeReference(),
                                      query->EndTime());
       if (aNode->mTime > endTime)
         continue; // after our time range
     }
     // --- search terms ---
     if (! query->SearchTerms().IsEmpty()) {
       // we can use the existing filtering code, just give it our one object in
       // an array.
       nsCOMArray<nsNavHistoryResultNode> inputSet;
       inputSet.AppendObject(aNode);
       nsCOMArray<nsNavHistoryQuery> queries;
       queries.AppendObject(query);
       nsCOMArray<nsNavHistoryResultNode> filteredSet;
       nsresult rv = FilterResultSet(nullptr, inputSet, &filteredSet, queries, aOptions);
       if (NS_FAILED(rv))
         continue;
       if (! filteredSet.Count())
         continue; // did not make it through the filter, doesn't match
     }
     // --- domain/host matching ---
     query->GetHasDomain(&hasIt);
     if (hasIt) {
       if (! nodeUri) {
         // lazy creation of nodeUri, which might be checked for multiple queries
         if (NS_FAILED(NS_NewURI(getter_AddRefs(nodeUri), aNode->mURI)))
           continue;
       }
       nsAutoCString asciiRequest;
       if (NS_FAILED(AsciiHostNameFromHostString(query->Domain(), asciiRequest)))
         continue;
       if (query->DomainIsHost()) {
         nsAutoCString host;
         if (NS_FAILED(nodeUri->GetAsciiHost(host)))
           continue;
         if (! asciiRequest.Equals(host))
           continue; // host names don't match
       }
       // check domain names
       nsAutoCString domain;
       DomainNameFromURI(nodeUri, domain);
       if (! asciiRequest.Equals(domain))
         continue; // domain names don't match
     }
     // --- URI matching ---
     if (query->Uri()) {
       if (! nodeUri) { // lazy creation of nodeUri
         if (NS_FAILED(NS_NewURI(getter_AddRefs(nodeUri), aNode->mURI)))
           continue;
       }
       if (! query->UriIsPrefix()) {
         // easy case: the URI is an exact match
         bool equals;
         nsresult rv = query->Uri()->Equals(nodeUri, &equals);
         NS_ENSURE_SUCCESS(rv, false);
         if (! equals)
           continue;
       } else {
         // harder case: match prefix, note that we need to get the ASCII string
         // from the node's parsed URI instead of using the node's mUrl string,
         // because that might not be normalized
         nsAutoCString nodeUriString;
         nodeUri->GetAsciiSpec(nodeUriString);
         nsAutoCString queryUriString;
         query->Uri()->GetAsciiSpec(queryUriString);
         if (queryUriString.Length() > nodeUriString.Length())
           continue; // not long enough to match as prefix
         nodeUriString.SetLength(queryUriString.Length());
         if (! nodeUriString.Equals(queryUriString))
           continue; // prefixes don't match
       }
     }
     // Transitions matching.
     const nsTArray<uint32_t>& transitions = query->Transitions();
     if (aNode->mTransitionType > 0 &&
         transitions.Length() &&
         !transitions.Contains(aNode->mTransitionType)) {
       continue; // transition doesn't match.
     }
     // If we ever make it to the bottom of this loop, that means it passed all
     // tests for the given query. Since queries are ORed together, that means
     // it passed everything and we are done.
     return true;
   }
   // didn't match any query
   return false;
 }
 // nsNavHistory::AsciiHostNameFromHostString
 //
 //    We might have interesting encodings and different case in the host name.
 //    This will convert that host name into an ASCII host name by sending it
 //    through the URI canonicalization. The result can be used for comparison
 //    with other ASCII host name strings.
 nsresult // static
 nsNavHistory::AsciiHostNameFromHostString(const nsACString& aHostName,
                                           nsACString& aAscii)
 {
   // To properly generate a uri we must provide a protocol.
   nsAutoCString fakeURL("http://");
   fakeURL.Append(aHostName);
   nsCOMPtr<nsIURI> uri;
   nsresult rv = NS_NewURI(getter_AddRefs(uri), fakeURL);
   NS_ENSURE_SUCCESS(rv, rv);
   rv = uri->GetAsciiHost(aAscii);
   NS_ENSURE_SUCCESS(rv, rv);
   return NS_OK;
 }
 // nsNavHistory::DomainNameFromURI
 //
 //    This does the www.mozilla.org -> mozilla.org and
 //    foo.theregister.co.uk -> theregister.co.uk conversion
 void
 nsNavHistory::DomainNameFromURI(nsIURI *aURI,
                                 nsACString& aDomainName)
 {
   // lazily get the effective tld service
   if (!mTLDService)
     mTLDService = do_GetService(NS_EFFECTIVETLDSERVICE_CONTRACTID);
   if (mTLDService) {
     // get the base domain for a given hostname.
     // e.g. for "images.bbc.co.uk", this would be "bbc.co.uk".
     nsresult rv = mTLDService->GetBaseDomain(aURI, 0, aDomainName);
     if (NS_SUCCEEDED(rv))
       return;
   }
   // just return the original hostname
   // (it's also possible the host is an IP address)
   aURI->GetAsciiHost(aDomainName);
 }
 NS_IMETHODIMP
 nsNavHistory::GetHasHistoryEntries(bool* aHasEntries)
 {
   NS_ENSURE_ARG_POINTER(aHasEntries);
   *aHasEntries = GetDaysOfHistory() > 0;
   return NS_OK;
 }
 namespace {
 class InvalidateAllFrecenciesCallback : public AsyncStatementCallback
 {
 public:
   InvalidateAllFrecenciesCallback()
   {
   }
   NS_IMETHOD HandleCompletion(uint16_t aReason)
   {
     if (aReason == REASON_FINISHED) {
       nsNavHistory *navHistory = nsNavHistory::GetHistoryService();
       NS_ENSURE_STATE(navHistory);
       navHistory->NotifyManyFrecenciesChanged();
     }
     return NS_OK;
   }
 };
 } // anonymous namespace
 nsresult
 nsNavHistory::invalidateFrecencies(const nsCString& aPlaceIdsQueryString)
 {
   // Exclude place: queries by setting their frecency to zero.
   nsCString invalidFrecenciesSQLFragment(
     "UPDATE moz_places SET frecency = "
   );
   if (!aPlaceIdsQueryString.IsEmpty())
     invalidFrecenciesSQLFragment.AppendLiteral("NOTIFY_FRECENCY(");
   invalidFrecenciesSQLFragment.AppendLiteral(
       "(CASE "
        "WHEN url BETWEEN 'place:' AND 'place;' "
        "THEN 0 "
        "ELSE -1 "
        "END) "
   );
   if (!aPlaceIdsQueryString.IsEmpty()) {
     invalidFrecenciesSQLFragment.AppendLiteral(
       ", url, guid, hidden, last_visit_date) "
     );
   }
   invalidFrecenciesSQLFragment.AppendLiteral(
     "WHERE frecency > 0 "
   );
   if (!aPlaceIdsQueryString.IsEmpty()) {
     invalidFrecenciesSQLFragment.AppendLiteral("AND id IN(");
     invalidFrecenciesSQLFragment.Append(aPlaceIdsQueryString);
     invalidFrecenciesSQLFragment.AppendLiteral(")");
   }
   nsRefPtr<InvalidateAllFrecenciesCallback> cb =
     aPlaceIdsQueryString.IsEmpty() ? new InvalidateAllFrecenciesCallback()
                                    : nullptr;
   nsCOMPtr<mozIStorageAsyncStatement> stmt = mDB->GetAsyncStatement(
     invalidFrecenciesSQLFragment
   );
   NS_ENSURE_STATE(stmt);
   nsCOMPtr<mozIStoragePendingStatement> ps;
   nsresult rv = stmt->ExecuteAsync(cb, getter_AddRefs(ps));
   NS_ENSURE_SUCCESS(rv, rv);
   return NS_OK;
 }
 // Call this method before visiting a URL in order to help determine the
 // transition type of the visit.
 //
 // @see MarkPageAsTyped
 NS_IMETHODIMP
 nsNavHistory::MarkPageAsFollowedBookmark(nsIURI* aURI)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   NS_ENSURE_ARG(aURI);
   // don't add when history is disabled
   if (IsHistoryDisabled())
     return NS_OK;
   nsAutoCString uriString;
   nsresult rv = aURI->GetSpec(uriString);
   NS_ENSURE_SUCCESS(rv, rv);
   // if URL is already in the bookmark queue, then we need to remove the old one
   int64_t unusedEventTime;
   if (mRecentBookmark.Get(uriString, &unusedEventTime))
     mRecentBookmark.Remove(uriString);
   if (mRecentBookmark.Count() > RECENT_EVENT_QUEUE_MAX_LENGTH)
     ExpireNonrecentEvents(&mRecentBookmark);
   mRecentBookmark.Put(uriString, GetNow());
   return NS_OK;
 }
 // nsNavHistory::CanAddURI
 //
 //    Filter out unwanted URIs such as "chrome:", "mailbox:", etc.
 //
 //    The model is if we don't know differently then add which basically means
 //    we are suppose to try all the things we know not to allow in and then if
 //    we don't bail go on and allow it in.
 NS_IMETHODIMP
 nsNavHistory::CanAddURI(nsIURI* aURI, bool* canAdd)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   NS_ENSURE_ARG(aURI);
   NS_ENSURE_ARG_POINTER(canAdd);
   // If history is disabled, don't add any entry.
   if (IsHistoryDisabled()) {
     *canAdd = false;
     return NS_OK;
   }
   nsAutoCString scheme;
   nsresult rv = aURI->GetScheme(scheme);
   NS_ENSURE_SUCCESS(rv, rv);
   // first check the most common cases (HTTP, HTTPS) to allow in to avoid most
   // of the work
   if (scheme.EqualsLiteral("http")) {
     *canAdd = true;
     return NS_OK;
   }
   if (scheme.EqualsLiteral("https")) {
     *canAdd = true;
     return NS_OK;
   }
   // now check for all bad things
   if (scheme.EqualsLiteral("about") ||
       scheme.EqualsLiteral("imap") ||
       scheme.EqualsLiteral("news") ||
       scheme.EqualsLiteral("mailbox") ||
       scheme.EqualsLiteral("moz-anno") ||
       scheme.EqualsLiteral("view-source") ||
       scheme.EqualsLiteral("chrome") ||
       scheme.EqualsLiteral("resource") ||
       scheme.EqualsLiteral("data") ||
       scheme.EqualsLiteral("wyciwyg") ||
       scheme.EqualsLiteral("javascript") ||
       scheme.EqualsLiteral("blob")) {
     *canAdd = false;
     return NS_OK;
   }
   *canAdd = true;
   return NS_OK;
 }
 // nsNavHistory::GetNewQuery
 NS_IMETHODIMP
 nsNavHistory::GetNewQuery(nsINavHistoryQuery **_retval)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   NS_ENSURE_ARG_POINTER(_retval);
   nsRefPtr<nsNavHistoryQuery> query = new nsNavHistoryQuery();
   query.forget(_retval);
   return NS_OK;
 }
 // nsNavHistory::GetNewQueryOptions
 NS_IMETHODIMP
 nsNavHistory::GetNewQueryOptions(nsINavHistoryQueryOptions **_retval)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   NS_ENSURE_ARG_POINTER(_retval);
   nsRefPtr<nsNavHistoryQueryOptions> queryOptions = new nsNavHistoryQueryOptions();
   queryOptions.forget(_retval);
   return NS_OK;
 }
 // nsNavHistory::ExecuteQuery
 //
 NS_IMETHODIMP
 nsNavHistory::ExecuteQuery(nsINavHistoryQuery *aQuery, nsINavHistoryQueryOptions *aOptions,
                            nsINavHistoryResult** _retval)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   NS_ENSURE_ARG(aQuery);
   NS_ENSURE_ARG(aOptions);
   NS_ENSURE_ARG_POINTER(_retval);
   return ExecuteQueries(&aQuery, 1, aOptions, _retval);
 }
 // nsNavHistory::ExecuteQueries
 //
 //    This function is actually very simple, we just create the proper root node (either
 //    a bookmark folder or a complex query node) and assign it to the result. The node
 //    will then populate itself accordingly.
 //
 //    Quick overview of query operation: When you call this function, we will construct
 //    the correct container node and set the options you give it. This node will then
 //    fill itself. Folder nodes will call nsNavBookmarks::QueryFolderChildren, and
 //    all other queries will call GetQueryResults. If these results contain other
 //    queries, those will be populated when the container is opened.
 NS_IMETHODIMP
 nsNavHistory::ExecuteQueries(nsINavHistoryQuery** aQueries, uint32_t aQueryCount,
                              nsINavHistoryQueryOptions *aOptions,
                              nsINavHistoryResult** _retval)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   NS_ENSURE_ARG(aQueries);
   NS_ENSURE_ARG(aOptions);
   NS_ENSURE_ARG(aQueryCount);
   NS_ENSURE_ARG_POINTER(_retval);
   nsresult rv;
   // concrete options
   nsCOMPtr<nsNavHistoryQueryOptions> options = do_QueryInterface(aOptions);
   NS_ENSURE_TRUE(options, NS_ERROR_INVALID_ARG);
   // concrete queries array
   nsCOMArray<nsNavHistoryQuery> queries;
   for (uint32_t i = 0; i < aQueryCount; i ++) {
     nsCOMPtr<nsNavHistoryQuery> query = do_QueryInterface(aQueries[i], &rv);
     NS_ENSURE_SUCCESS(rv, rv);
     queries.AppendObject(query);
   }
   // Create the root node.
   nsRefPtr<nsNavHistoryContainerResultNode> rootNode;
   int64_t folderId = GetSimpleBookmarksQueryFolder(queries, options);
   if (folderId) {
     // In the simple case where we're just querying children of a single
     // bookmark folder, we can more efficiently generate results.
     nsNavBookmarks* bookmarks = nsNavBookmarks::GetBookmarksService();
     NS_ENSURE_TRUE(bookmarks, NS_ERROR_OUT_OF_MEMORY);
     nsRefPtr<nsNavHistoryResultNode> tempRootNode;
     rv = bookmarks->ResultNodeForContainer(folderId, options,
                                            getter_AddRefs(tempRootNode));
     if (NS_SUCCEEDED(rv)) {
       rootNode = tempRootNode->GetAsContainer();
     }
     else {
       NS_WARNING("Generating a generic empty node for a broken query!");
       // This is a perf hack to generate an empty query that skips filtering.
       options->SetExcludeItems(true);
     }
   }
   if (!rootNode) {
     // Either this is not a folder shortcut, or is a broken one.  In both cases
     // just generate a query node.
     rootNode = new nsNavHistoryQueryResultNode(EmptyCString(), EmptyCString(),
                                                queries, options);
   }
   // Create the result that will hold nodes.  Inject batching status into it.
   nsRefPtr<nsNavHistoryResult> result;
   rv = nsNavHistoryResult::NewHistoryResult(aQueries, aQueryCount, options,
                                             rootNode, isBatching(),
                                             getter_AddRefs(result));
   NS_ENSURE_SUCCESS(rv, rv);
   result.forget(_retval);
   return NS_OK;
 }
 // determine from our nsNavHistoryQuery array and nsNavHistoryQueryOptions
 // if this is the place query from the history menu.
 // from browser-menubar.inc, our history menu query is:
 // place:sort=4&maxResults=10
 // note, any maxResult > 0 will still be considered a history menu query
 // or if this is the place query from the "Most Visited" item in the
 // "Smart Bookmarks" folder: place:sort=8&maxResults=10
 // note, any maxResult > 0 will still be considered a Most Visited menu query
 static
 bool IsOptimizableHistoryQuery(const nsCOMArray<nsNavHistoryQuery>& aQueries,
                                  nsNavHistoryQueryOptions *aOptions,
                                  uint16_t aSortMode)
 {
   if (aQueries.Count() != 1)
     return false;
   nsNavHistoryQuery *aQuery = aQueries[0];
   if (aOptions->QueryType() != nsINavHistoryQueryOptions::QUERY_TYPE_HISTORY)
     return false;
   if (aOptions->ResultType() != nsINavHistoryQueryOptions::RESULTS_AS_URI)
     return false;
   if (aOptions->SortingMode() != aSortMode)
     return false;
   if (aOptions->MaxResults() <= 0)
     return false;
   if (aOptions->ExcludeItems())
     return false;
   if (aOptions->IncludeHidden())
     return false;
   if (aQuery->MinVisits() != -1 || aQuery->MaxVisits() != -1)
     return false;
   if (aQuery->BeginTime() || aQuery->BeginTimeReference())
     return false;
   if (aQuery->EndTime() || aQuery->EndTimeReference())
     return false;
   if (!aQuery->SearchTerms().IsEmpty())
     return false;
   if (aQuery->OnlyBookmarked())
     return false;
   if (aQuery->DomainIsHost() || !aQuery->Domain().IsEmpty())
     return false;
   if (aQuery->AnnotationIsNot() || !aQuery->Annotation().IsEmpty())
     return false;
   if (aQuery->UriIsPrefix() || aQuery->Uri())
     return false;
   if (aQuery->Folders().Length() > 0)
     return false;
   if (aQuery->Tags().Length() > 0)
     return false;
   if (aQuery->Transitions().Length() > 0)
     return false;
   return true;
 }
 static
 bool NeedToFilterResultSet(const nsCOMArray<nsNavHistoryQuery>& aQueries,
                              nsNavHistoryQueryOptions *aOptions)
 {
   uint16_t resultType = aOptions->ResultType();
   return resultType == nsINavHistoryQueryOptions::RESULTS_AS_TAG_CONTENTS;
 }
 // ** Helper class for ConstructQueryString **/
 class PlacesSQLQueryBuilder
 {
 public:
   PlacesSQLQueryBuilder(const nsCString& aConditions,
                         nsNavHistoryQueryOptions* aOptions,
                         bool aUseLimit,
                         nsNavHistory::StringHash& aAddParams,
                         bool aHasSearchTerms);
   nsresult GetQueryString(nsCString& aQueryString);
 private:
   nsresult Select();
   nsresult SelectAsURI();
   nsresult SelectAsVisit();
   nsresult SelectAsDay();
   nsresult SelectAsSite();
   nsresult SelectAsTag();
   nsresult Where();
   nsresult GroupBy();
   nsresult OrderBy();
   nsresult Limit();
   void OrderByColumnIndexAsc(int32_t aIndex);
   void OrderByColumnIndexDesc(int32_t aIndex);
   // Use these if you want a case insensitive sorting.
   void OrderByTextColumnIndexAsc(int32_t aIndex);
   void OrderByTextColumnIndexDesc(int32_t aIndex);
   const nsCString& mConditions;
   bool mUseLimit;
   bool mHasSearchTerms;
   uint16_t mResultType;
   uint16_t mQueryType;
   bool mIncludeHidden;
   uint16_t mSortingMode;
   uint32_t mMaxResults;
   nsCString mQueryString;
   nsCString mGroupBy;
   bool mHasDateColumns;
   bool mSkipOrderBy;
   nsNavHistory::StringHash& mAddParams;
 };
 PlacesSQLQueryBuilder::PlacesSQLQueryBuilder(
     const nsCString& aConditions,
     nsNavHistoryQueryOptions* aOptions,
     bool aUseLimit,
     nsNavHistory::StringHash& aAddParams,
     bool aHasSearchTerms)
 : mConditions(aConditions)
 , mUseLimit(aUseLimit)
 , mHasSearchTerms(aHasSearchTerms)
 , mResultType(aOptions->ResultType())
 , mQueryType(aOptions->QueryType())
 , mIncludeHidden(aOptions->IncludeHidden())
 , mSortingMode(aOptions->SortingMode())
 , mMaxResults(aOptions->MaxResults())
 , mSkipOrderBy(false)
 , mAddParams(aAddParams)
 {
   mHasDateColumns = (mQueryType == nsINavHistoryQueryOptions::QUERY_TYPE_BOOKMARKS);
 }
 nsresult
 PlacesSQLQueryBuilder::GetQueryString(nsCString& aQueryString)
 {
   nsresult rv = Select();
   NS_ENSURE_SUCCESS(rv, rv);
   rv = Where();
   NS_ENSURE_SUCCESS(rv, rv);
   rv = GroupBy();
   NS_ENSURE_SUCCESS(rv, rv);
   rv = OrderBy();
   NS_ENSURE_SUCCESS(rv, rv);
   rv = Limit();
   NS_ENSURE_SUCCESS(rv, rv);
   aQueryString = mQueryString;
   return NS_OK;
 }
 nsresult
 PlacesSQLQueryBuilder::Select()
 {
   nsresult rv;
   switch (mResultType)
   {
     case nsINavHistoryQueryOptions::RESULTS_AS_URI:
     case nsINavHistoryQueryOptions::RESULTS_AS_TAG_CONTENTS:
       rv = SelectAsURI();
       NS_ENSURE_SUCCESS(rv, rv);
       break;
     case nsINavHistoryQueryOptions::RESULTS_AS_VISIT:
     case nsINavHistoryQueryOptions::RESULTS_AS_FULL_VISIT:
       rv = SelectAsVisit();
       NS_ENSURE_SUCCESS(rv, rv);
       break;
     case nsINavHistoryQueryOptions::RESULTS_AS_DATE_QUERY:
     case nsINavHistoryQueryOptions::RESULTS_AS_DATE_SITE_QUERY:
       rv = SelectAsDay();
       NS_ENSURE_SUCCESS(rv, rv);
       break;
     case nsINavHistoryQueryOptions::RESULTS_AS_SITE_QUERY:
       rv = SelectAsSite();
       NS_ENSURE_SUCCESS(rv, rv);
       break;
     case nsINavHistoryQueryOptions::RESULTS_AS_TAG_QUERY:
       rv = SelectAsTag();
       NS_ENSURE_SUCCESS(rv, rv);
       break;
     default:
       NS_NOTREACHED("Invalid result type");
   }
   return NS_OK;
 }
 nsresult
 PlacesSQLQueryBuilder::SelectAsURI()
 {
   nsNavHistory *history = nsNavHistory::GetHistoryService();
   NS_ENSURE_TRUE(history, NS_ERROR_OUT_OF_MEMORY);
   nsAutoCString tagsSqlFragment;
   switch (mQueryType) {
     case nsINavHistoryQueryOptions::QUERY_TYPE_HISTORY:
       GetTagsSqlFragment(history->GetTagsFolder(),
                          NS_LITERAL_CSTRING("h.id"),
                          mHasSearchTerms,
                          tagsSqlFragment);
       mQueryString = NS_LITERAL_CSTRING(
         "SELECT h.id, h.url, h.title AS page_title, h.rev_host, h.visit_count, "
         "h.last_visit_date, f.url, null, null, null, null, ") +
         tagsSqlFragment + NS_LITERAL_CSTRING(", h.frecency, h.hidden, h.guid "
         "FROM moz_places h "
         "LEFT JOIN moz_favicons f ON h.favicon_id = f.id "
         // WHERE 1 is a no-op since additonal conditions will start with AND.
         "WHERE 1 "
           "{QUERY_OPTIONS_VISITS} {QUERY_OPTIONS_PLACES} "
           "{ADDITIONAL_CONDITIONS} ");
       break;
     case nsINavHistoryQueryOptions::QUERY_TYPE_BOOKMARKS:
       if (mResultType == nsINavHistoryQueryOptions::RESULTS_AS_TAG_CONTENTS) {
         // Order-by clause is hardcoded because we need to discard duplicates
         // in FilterResultSet. We will retain only the last modified item,
         // so we are ordering by place id and last modified to do a faster
         // filtering.
         mSkipOrderBy = true;
         GetTagsSqlFragment(history->GetTagsFolder(),
                            NS_LITERAL_CSTRING("b2.fk"),
                            mHasSearchTerms,
                            tagsSqlFragment);
         mQueryString = NS_LITERAL_CSTRING(
           "SELECT b2.fk, h.url, COALESCE(b2.title, h.title) AS page_title, "
             "h.rev_host, h.visit_count, h.last_visit_date, f.url, b2.id, "
             "b2.dateAdded, b2.lastModified, b2.parent, ") +
             tagsSqlFragment + NS_LITERAL_CSTRING(", h.frecency, h.hidden, h.guid "
           "FROM moz_bookmarks b2 "
           "JOIN (SELECT b.fk "
                 "FROM moz_bookmarks b "
                 // ADDITIONAL_CONDITIONS will filter on parent.
                 "WHERE b.type = 1 {ADDITIONAL_CONDITIONS} "
                 ") AS seed ON b2.fk = seed.fk "
           "JOIN moz_places h ON h.id = b2.fk "
           "LEFT OUTER JOIN moz_favicons f ON h.favicon_id = f.id "
           "WHERE NOT EXISTS ( "
             "SELECT id FROM moz_bookmarks WHERE id = b2.parent AND parent = ") +
                 nsPrintfCString("%lld", history->GetTagsFolder()) +
           NS_LITERAL_CSTRING(") "
           "ORDER BY b2.fk DESC, b2.lastModified DESC");
       }
       else {
         GetTagsSqlFragment(history->GetTagsFolder(),
                            NS_LITERAL_CSTRING("b.fk"),
                            mHasSearchTerms,
                            tagsSqlFragment);
         mQueryString = NS_LITERAL_CSTRING(
           "SELECT b.fk, h.url, COALESCE(b.title, h.title) AS page_title, "
             "h.rev_host, h.visit_count, h.last_visit_date, f.url, b.id, "
             "b.dateAdded, b.lastModified, b.parent, ") +
             tagsSqlFragment + NS_LITERAL_CSTRING(", h.frecency, h.hidden, h.guid "
           "FROM moz_bookmarks b "
           "JOIN moz_places h ON b.fk = h.id "
           "LEFT OUTER JOIN moz_favicons f ON h.favicon_id = f.id "
           "WHERE NOT EXISTS "
               "(SELECT id FROM moz_bookmarks "
                 "WHERE id = b.parent AND parent = ") +
                   nsPrintfCString("%lld", history->GetTagsFolder()) +
               NS_LITERAL_CSTRING(") "
             "{ADDITIONAL_CONDITIONS}");
       }
       break;
     default:
       return NS_ERROR_NOT_IMPLEMENTED;
   }
   return NS_OK;
 }
 nsresult
 PlacesSQLQueryBuilder::SelectAsVisit()
 {
   nsNavHistory *history = nsNavHistory::GetHistoryService();
   NS_ENSURE_TRUE(history, NS_ERROR_OUT_OF_MEMORY);
   nsAutoCString tagsSqlFragment;
   GetTagsSqlFragment(history->GetTagsFolder(),
                      NS_LITERAL_CSTRING("h.id"),
                      mHasSearchTerms,
                      tagsSqlFragment);
   mQueryString = NS_LITERAL_CSTRING(
     "SELECT h.id, h.url, h.title AS page_title, h.rev_host, h.visit_count, "
       "v.visit_date, f.url, null, null, null, null, ") +
       tagsSqlFragment + NS_LITERAL_CSTRING(", h.frecency, h.hidden, h.guid "
     "FROM moz_places h "
     "JOIN moz_historyvisits v ON h.id = v.place_id "
     "LEFT JOIN moz_favicons f ON h.favicon_id = f.id "
     // WHERE 1 is a no-op since additonal conditions will start with AND.
     "WHERE 1 "
       "{QUERY_OPTIONS_VISITS} {QUERY_OPTIONS_PLACES} "
       "{ADDITIONAL_CONDITIONS} ");
   return NS_OK;
 }
 nsresult
 PlacesSQLQueryBuilder::SelectAsDay()
 {
   mSkipOrderBy = true;
   // Sort child queries based on sorting mode if it's provided, otherwise
   // fallback to default sort by title ascending.
   uint16_t sortingMode = nsINavHistoryQueryOptions::SORT_BY_TITLE_ASCENDING;
   if (mSortingMode != nsINavHistoryQueryOptions::SORT_BY_NONE &&
       mResultType == nsINavHistoryQueryOptions::RESULTS_AS_DATE_QUERY)
     sortingMode = mSortingMode;
   uint16_t resultType =
     mResultType == nsINavHistoryQueryOptions::RESULTS_AS_DATE_QUERY ?
       (uint16_t)nsINavHistoryQueryOptions::RESULTS_AS_URI :
       (uint16_t)nsINavHistoryQueryOptions::RESULTS_AS_SITE_QUERY;
   // beginTime will become the node's time property, we don't use endTime
   // because it could overlap, and we use time to sort containers and find
   // insert position in a result.
   mQueryString = nsPrintfCString(
      "SELECT null, "
        "'place:type=%ld&sort=%ld&beginTime='||beginTime||'&endTime='||endTime, "
       "dayTitle, null, null, beginTime, null, null, null, null, null, null "
      "FROM (", // TOUTER BEGIN
      resultType,
      sortingMode);
   nsNavHistory *history = nsNavHistory::GetHistoryService();
   NS_ENSURE_STATE(history);
   int32_t daysOfHistory = history->GetDaysOfHistory();
   for (int32_t i = 0; i <= HISTORY_DATE_CONT_NUM(daysOfHistory); i++) {
     nsAutoCString dateName;
     // Timeframes are calculated as BeginTime <= container < EndTime.
     // Notice times can't be relative to now, since to recognize a query we
     // must ensure it won't change based on the time it is built.
     // So, to select till now, we really select till start of tomorrow, that is
     // a fixed timestamp.
     // These are used as limits for the inside containers.
     nsAutoCString sqlFragmentContainerBeginTime, sqlFragmentContainerEndTime;
     // These are used to query if the container should be visible.
     nsAutoCString sqlFragmentSearchBeginTime, sqlFragmentSearchEndTime;
     switch(i) {
        case 0:
         // Today
          history->GetStringFromName(
           MOZ_UTF16("finduri-AgeInDays-is-0"), dateName);
         // From start of today
         sqlFragmentContainerBeginTime = NS_LITERAL_CSTRING(
           "(strftime('%s','now','localtime','start of day','utc')*1000000)");
         // To now (tomorrow)
         sqlFragmentContainerEndTime = NS_LITERAL_CSTRING(
           "(strftime('%s','now','localtime','start of day','+1 day','utc')*1000000)");
         // Search for the same timeframe.
         sqlFragmentSearchBeginTime = sqlFragmentContainerBeginTime;
         sqlFragmentSearchEndTime = sqlFragmentContainerEndTime;
          break;
        case 1:
         // Yesterday
          history->GetStringFromName(
           MOZ_UTF16("finduri-AgeInDays-is-1"), dateName);
         // From start of yesterday
         sqlFragmentContainerBeginTime = NS_LITERAL_CSTRING(
           "(strftime('%s','now','localtime','start of day','-1 day','utc')*1000000)");
         // To start of today
         sqlFragmentContainerEndTime = NS_LITERAL_CSTRING(
           "(strftime('%s','now','localtime','start of day','utc')*1000000)");
         // Search for the same timeframe.
         sqlFragmentSearchBeginTime = sqlFragmentContainerBeginTime;
         sqlFragmentSearchEndTime = sqlFragmentContainerEndTime;
         break;
       case 2:
         // Last 7 days
         history->GetAgeInDaysString(7,
           MOZ_UTF16("finduri-AgeInDays-last-is"), dateName);
         // From start of 7 days ago
         sqlFragmentContainerBeginTime = NS_LITERAL_CSTRING(
           "(strftime('%s','now','localtime','start of day','-7 days','utc')*1000000)");
         // To now (tomorrow)
         sqlFragmentContainerEndTime = NS_LITERAL_CSTRING(
           "(strftime('%s','now','localtime','start of day','+1 day','utc')*1000000)");
         // This is an overlapped container, but we show it only if there are
         // visits older than yesterday.
         sqlFragmentSearchBeginTime = sqlFragmentContainerBeginTime;
         sqlFragmentSearchEndTime = NS_LITERAL_CSTRING(
           "(strftime('%s','now','localtime','start of day','-2 days','utc')*1000000)");
         break;
       case 3:
         // This month
         history->GetStringFromName(
           MOZ_UTF16("finduri-AgeInMonths-is-0"), dateName);
         // From start of this month
         sqlFragmentContainerBeginTime = NS_LITERAL_CSTRING(
           "(strftime('%s','now','localtime','start of month','utc')*1000000)");
         // To now (tomorrow)
         sqlFragmentContainerEndTime = NS_LITERAL_CSTRING(
           "(strftime('%s','now','localtime','start of day','+1 day','utc')*1000000)");
         // This is an overlapped container, but we show it only if there are
         // visits older than 7 days ago.
         sqlFragmentSearchBeginTime = sqlFragmentContainerBeginTime;
         sqlFragmentSearchEndTime = NS_LITERAL_CSTRING(
           "(strftime('%s','now','localtime','start of day','-7 days','utc')*1000000)");
          break;
        default:
         if (i == HISTORY_ADDITIONAL_DATE_CONT_NUM + 6) {
           // Older than 6 months
           history->GetAgeInDaysString(6,
             MOZ_UTF16("finduri-AgeInMonths-isgreater"), dateName);
           // From start of epoch
           sqlFragmentContainerBeginTime = NS_LITERAL_CSTRING(
             "(datetime(0, 'unixepoch')*1000000)");
           // To start of 6 months ago ( 5 months + this month).
           sqlFragmentContainerEndTime = NS_LITERAL_CSTRING(
             "(strftime('%s','now','localtime','start of month','-5 months','utc')*1000000)");
           // Search for the same timeframe.
           sqlFragmentSearchBeginTime = sqlFragmentContainerBeginTime;
           sqlFragmentSearchEndTime = sqlFragmentContainerEndTime;
           break;
         }
         int32_t MonthIndex = i - HISTORY_ADDITIONAL_DATE_CONT_NUM;
         // Previous months' titles are month's name if inside this year,
         // month's name and year for previous years.
         PRExplodedTime tm;
         PR_ExplodeTime(PR_Now(), PR_LocalTimeParameters, &tm);
         uint16_t currentYear = tm.tm_year;
         // Set day before month, setting month without day could cause issues.
         // For example setting month to February when today is 30, since
         // February has not 30 days, will return March instead.
         // Also, we use day 2 instead of day 1, so that the GMT month is always
         // the same as the local month. (Bug 603002)
         tm.tm_mday = 2;
         tm.tm_month -= MonthIndex;
         // Notice we use GMTParameters because we just want to get the first
         // day of each month.  Using LocalTimeParameters would instead force us
         // to apply a DST correction that we don't really need here.
         PR_NormalizeTime(&tm, PR_GMTParameters);
         // If the container is for a past year, add the year to its title,
         // otherwise just show the month name.
         // Note that tm_month starts from 0, while we need a 1-based index.
         if (tm.tm_year < currentYear) {
           history->GetMonthYear(tm.tm_month + 1, tm.tm_year, dateName);
         }
         else {
           history->GetMonthName(tm.tm_month + 1, dateName);
         }
         // From start of MonthIndex + 1 months ago
         sqlFragmentContainerBeginTime = NS_LITERAL_CSTRING(
           "(strftime('%s','now','localtime','start of month','-");
         sqlFragmentContainerBeginTime.AppendInt(MonthIndex);
         sqlFragmentContainerBeginTime.Append(NS_LITERAL_CSTRING(
             " months','utc')*1000000)"));
         // To start of MonthIndex months ago
         sqlFragmentContainerEndTime = NS_LITERAL_CSTRING(
           "(strftime('%s','now','localtime','start of month','-");
         sqlFragmentContainerEndTime.AppendInt(MonthIndex - 1);
         sqlFragmentContainerEndTime.Append(NS_LITERAL_CSTRING(
             " months','utc')*1000000)"));
         // Search for the same timeframe.
         sqlFragmentSearchBeginTime = sqlFragmentContainerBeginTime;
         sqlFragmentSearchEndTime = sqlFragmentContainerEndTime;
         break;
     }
     nsPrintfCString dateParam("dayTitle%d", i);
     mAddParams.Put(dateParam, dateName);
     nsPrintfCString dayRange(
       "SELECT :%s AS dayTitle, "
              "%s AS beginTime, "
              "%s AS endTime "
        "WHERE EXISTS ( "
         "SELECT id FROM moz_historyvisits "
         "WHERE visit_date >= %s "
           "AND visit_date < %s "
            "AND visit_type NOT IN (0,%d,%d) "
            "{QUERY_OPTIONS_VISITS} "
          "LIMIT 1 "
       ") ",
       dateParam.get(),
       sqlFragmentContainerBeginTime.get(),
       sqlFragmentContainerEndTime.get(),
       sqlFragmentSearchBeginTime.get(),
       sqlFragmentSearchEndTime.get(),
       nsINavHistoryService::TRANSITION_EMBED,
       nsINavHistoryService::TRANSITION_FRAMED_LINK
     );
     mQueryString.Append(dayRange);
     if (i < HISTORY_DATE_CONT_NUM(daysOfHistory))
       mQueryString.Append(NS_LITERAL_CSTRING(" UNION ALL "));
   }
   mQueryString.Append(NS_LITERAL_CSTRING(") ")); // TOUTER END
   return NS_OK;
 }
 nsresult
 PlacesSQLQueryBuilder::SelectAsSite()
 {
   nsAutoCString localFiles;
   nsNavHistory *history = nsNavHistory::GetHistoryService();
   NS_ENSURE_STATE(history);
   history->GetStringFromName(MOZ_UTF16("localhost"), localFiles);
   mAddParams.Put(NS_LITERAL_CSTRING("localhost"), localFiles);
   // If there are additional conditions the query has to join on visits too.
   nsAutoCString visitsJoin;
   nsAutoCString additionalConditions;
   nsAutoCString timeConstraints;
   if (!mConditions.IsEmpty()) {
     visitsJoin.AssignLiteral("JOIN moz_historyvisits v ON v.place_id = h.id ");
     additionalConditions.AssignLiteral("{QUERY_OPTIONS_VISITS} "
                                        "{QUERY_OPTIONS_PLACES} "
                                        "{ADDITIONAL_CONDITIONS} ");
     timeConstraints.AssignLiteral("||'&beginTime='||:begin_time||"
                                     "'&endTime='||:end_time");
   }
   mQueryString = nsPrintfCString(
     "SELECT null, 'place:type=%ld&sort=%ld&domain=&domainIsHost=true'%s, "
            ":localhost, :localhost, null, null, null, null, null, null, null "
     "WHERE EXISTS ( "
       "SELECT h.id FROM moz_places h "
       "%s "
       "WHERE h.hidden = 0 "
         "AND h.visit_count > 0 "
         "AND h.url BETWEEN 'file://' AND 'file:/~' "
       "%s "
       "LIMIT 1 "
     ") "
     "UNION ALL "
     "SELECT null, "
            "'place:type=%ld&sort=%ld&domain='||host||'&domainIsHost=true'%s, "
            "host, host, null, null, null, null, null, null, null "
     "FROM ( "
       "SELECT get_unreversed_host(h.rev_host) AS host "
       "FROM moz_places h "
       "%s "
       "WHERE h.hidden = 0 "
         "AND h.rev_host <> '.' "
         "AND h.visit_count > 0 "
         "%s "
       "GROUP BY h.rev_host "
       "ORDER BY host ASC "
     ") ",
     nsINavHistoryQueryOptions::RESULTS_AS_URI,
     mSortingMode,
     timeConstraints.get(),
     visitsJoin.get(),
     additionalConditions.get(),
     nsINavHistoryQueryOptions::RESULTS_AS_URI,
     mSortingMode,
     timeConstraints.get(),
     visitsJoin.get(),
     additionalConditions.get()
   );
   return NS_OK;
 }
 nsresult
 PlacesSQLQueryBuilder::SelectAsTag()
 {
   nsNavHistory *history = nsNavHistory::GetHistoryService();
   NS_ENSURE_STATE(history);
   // This allows sorting by date fields what is not possible with
   // other history queries.
   mHasDateColumns = true;
   mQueryString = nsPrintfCString(
     "SELECT null, 'place:folder=' || id || '&queryType=%d&type=%ld', "
            "title, null, null, null, null, null, dateAdded, "
            "lastModified, null, null, null "
     "FROM moz_bookmarks "
     "WHERE parent = %lld",
     nsINavHistoryQueryOptions::QUERY_TYPE_BOOKMARKS,
     nsINavHistoryQueryOptions::RESULTS_AS_TAG_CONTENTS,
     history->GetTagsFolder()
   );
   return NS_OK;
 }
 nsresult
 PlacesSQLQueryBuilder::Where()
 {
   // Set query options
   nsAutoCString additionalVisitsConditions;
   nsAutoCString additionalPlacesConditions;
   if (!mIncludeHidden) {
     additionalPlacesConditions += NS_LITERAL_CSTRING("AND hidden = 0 ");
   }
   if (mQueryType == nsINavHistoryQueryOptions::QUERY_TYPE_HISTORY) {
     // last_visit_date is updated for any kind of visit, so it's a good
     // indicator whether the page has visits.
     additionalPlacesConditions += NS_LITERAL_CSTRING(
       "AND last_visit_date NOTNULL "
     );
   }
   if (mResultType == nsINavHistoryQueryOptions::RESULTS_AS_URI &&
       !additionalVisitsConditions.IsEmpty()) {
     // URI results don't join on visits.
     nsAutoCString tmp = additionalVisitsConditions;
     additionalVisitsConditions = "AND EXISTS (SELECT 1 FROM moz_historyvisits WHERE place_id = h.id ";
     additionalVisitsConditions.Append(tmp);
     additionalVisitsConditions.Append("LIMIT 1)");
   }
   mQueryString.ReplaceSubstring("{QUERY_OPTIONS_VISITS}",
                                 additionalVisitsConditions.get());
   mQueryString.ReplaceSubstring("{QUERY_OPTIONS_PLACES}",
                                 additionalPlacesConditions.get());
   // If we used WHERE already, we inject the conditions
   // in place of {ADDITIONAL_CONDITIONS}
   if (mQueryString.Find("{ADDITIONAL_CONDITIONS}", 0) != kNotFound) {
     nsAutoCString innerCondition;
     // If we have condition AND it
     if (!mConditions.IsEmpty()) {
       innerCondition = " AND (";
       innerCondition += mConditions;
       innerCondition += ")";
     }
     mQueryString.ReplaceSubstring("{ADDITIONAL_CONDITIONS}",
                                   innerCondition.get());
   } else if (!mConditions.IsEmpty()) {
     mQueryString += "WHERE ";
     mQueryString += mConditions;
   }
   return NS_OK;
 }
 nsresult
 PlacesSQLQueryBuilder::GroupBy()
 {
   mQueryString += mGroupBy;
   return NS_OK;
 }
 nsresult
 PlacesSQLQueryBuilder::OrderBy()
 {
   if (mSkipOrderBy)
     return NS_OK;
   // Sort clause: we will sort later, but if it comes out of the DB sorted,
   // our later sort will be basically free. The DB can sort these for free
   // most of the time anyway, because it has indices over these items.
   switch(mSortingMode)
   {
     case nsINavHistoryQueryOptions::SORT_BY_NONE:
       // Ensure sorting does not change based on tables status.
       if (mResultType == nsINavHistoryQueryOptions::RESULTS_AS_URI) {
         if (mQueryType == nsINavHistoryQueryOptions::QUERY_TYPE_BOOKMARKS)
           mQueryString += NS_LITERAL_CSTRING(" ORDER BY b.id ASC ");
         else if (mQueryType == nsINavHistoryQueryOptions::QUERY_TYPE_HISTORY)
           mQueryString += NS_LITERAL_CSTRING(" ORDER BY h.id ASC ");
       }
       break;
     case nsINavHistoryQueryOptions::SORT_BY_TITLE_ASCENDING:
     case nsINavHistoryQueryOptions::SORT_BY_TITLE_DESCENDING:
       // If the user wants few results, we limit them by date, necessitating
       // a sort by date here (see the IDL definition for maxResults).
       // Otherwise we will do actual sorting by title, but since we could need
       // to special sort for some locale we will repeat a second sorting at the
       // end in nsNavHistoryResult, that should be faster since the list will be
       // almost ordered.
       if (mMaxResults > 0)
         OrderByColumnIndexDesc(nsNavHistory::kGetInfoIndex_VisitDate);
       else if (mSortingMode == nsINavHistoryQueryOptions::SORT_BY_TITLE_ASCENDING)
         OrderByTextColumnIndexAsc(nsNavHistory::kGetInfoIndex_Title);
       else
         OrderByTextColumnIndexDesc(nsNavHistory::kGetInfoIndex_Title);
       break;
     case nsINavHistoryQueryOptions::SORT_BY_DATE_ASCENDING:
       OrderByColumnIndexAsc(nsNavHistory::kGetInfoIndex_VisitDate);
       break;
     case nsINavHistoryQueryOptions::SORT_BY_DATE_DESCENDING:
       OrderByColumnIndexDesc(nsNavHistory::kGetInfoIndex_VisitDate);
       break;
     case nsINavHistoryQueryOptions::SORT_BY_URI_ASCENDING:
       OrderByColumnIndexAsc(nsNavHistory::kGetInfoIndex_URL);
       break;
     case nsINavHistoryQueryOptions::SORT_BY_URI_DESCENDING:
       OrderByColumnIndexDesc(nsNavHistory::kGetInfoIndex_URL);
       break;
     case nsINavHistoryQueryOptions::SORT_BY_VISITCOUNT_ASCENDING:
       OrderByColumnIndexAsc(nsNavHistory::kGetInfoIndex_VisitCount);
       break;
     case nsINavHistoryQueryOptions::SORT_BY_VISITCOUNT_DESCENDING:
       OrderByColumnIndexDesc(nsNavHistory::kGetInfoIndex_VisitCount);
       break;
     case nsINavHistoryQueryOptions::SORT_BY_DATEADDED_ASCENDING:
       if (mHasDateColumns)
         OrderByColumnIndexAsc(nsNavHistory::kGetInfoIndex_ItemDateAdded);
       break;
     case nsINavHistoryQueryOptions::SORT_BY_DATEADDED_DESCENDING:
       if (mHasDateColumns)
         OrderByColumnIndexDesc(nsNavHistory::kGetInfoIndex_ItemDateAdded);
       break;
     case nsINavHistoryQueryOptions::SORT_BY_LASTMODIFIED_ASCENDING:
       if (mHasDateColumns)
         OrderByColumnIndexAsc(nsNavHistory::kGetInfoIndex_ItemLastModified);
       break;
     case nsINavHistoryQueryOptions::SORT_BY_LASTMODIFIED_DESCENDING:
       if (mHasDateColumns)
         OrderByColumnIndexDesc(nsNavHistory::kGetInfoIndex_ItemLastModified);
       break;
     case nsINavHistoryQueryOptions::SORT_BY_TAGS_ASCENDING:
     case nsINavHistoryQueryOptions::SORT_BY_TAGS_DESCENDING:
     case nsINavHistoryQueryOptions::SORT_BY_ANNOTATION_ASCENDING:
     case nsINavHistoryQueryOptions::SORT_BY_ANNOTATION_DESCENDING:
       break; // Sort later in nsNavHistoryQueryResultNode::FillChildren()
     case nsINavHistoryQueryOptions::SORT_BY_FRECENCY_ASCENDING:
         OrderByColumnIndexAsc(nsNavHistory::kGetInfoIndex_Frecency);
       break;
     case nsINavHistoryQueryOptions::SORT_BY_FRECENCY_DESCENDING:
         OrderByColumnIndexDesc(nsNavHistory::kGetInfoIndex_Frecency);
       break;
     default:
       NS_NOTREACHED("Invalid sorting mode");
   }
   return NS_OK;
 }
 void PlacesSQLQueryBuilder::OrderByColumnIndexAsc(int32_t aIndex)
 {
   mQueryString += nsPrintfCString(" ORDER BY %d ASC", aIndex+1);
 }
 void PlacesSQLQueryBuilder::OrderByColumnIndexDesc(int32_t aIndex)
 {
   mQueryString += nsPrintfCString(" ORDER BY %d DESC", aIndex+1);
 }
 void PlacesSQLQueryBuilder::OrderByTextColumnIndexAsc(int32_t aIndex)
 {
   mQueryString += nsPrintfCString(" ORDER BY %d COLLATE NOCASE ASC",
                                   aIndex+1);
 }
 void PlacesSQLQueryBuilder::OrderByTextColumnIndexDesc(int32_t aIndex)
 {
   mQueryString += nsPrintfCString(" ORDER BY %d COLLATE NOCASE DESC",
                                   aIndex+1);
 }
 nsresult
 PlacesSQLQueryBuilder::Limit()
 {
   if (mUseLimit && mMaxResults > 0) {
     mQueryString += NS_LITERAL_CSTRING(" LIMIT ");
     mQueryString.AppendInt(mMaxResults);
     mQueryString.AppendLiteral(" ");
   }
   return NS_OK;
 }
 nsresult
 nsNavHistory::ConstructQueryString(
     const nsCOMArray<nsNavHistoryQuery>& aQueries,
     nsNavHistoryQueryOptions* aOptions,
     nsCString& queryString,
     bool& aParamsPresent,
     nsNavHistory::StringHash& aAddParams)
 {
   // For information about visit_type see nsINavHistoryService.idl.
   // visitType == 0 is undefined (see bug #375777 for details).
   // Some sites, especially Javascript-heavy ones, load things in frames to
   // display them, resulting in a lot of these entries. This is the reason
   // why such visits are filtered out.
   nsresult rv;
   aParamsPresent = false;
   int32_t sortingMode = aOptions->SortingMode();
   NS_ASSERTION(sortingMode >= nsINavHistoryQueryOptions::SORT_BY_NONE &&
                sortingMode <= nsINavHistoryQueryOptions::SORT_BY_FRECENCY_DESCENDING,
                "Invalid sortingMode found while building query!");
   bool hasSearchTerms = false;
   for (int32_t i = 0; i < aQueries.Count() && !hasSearchTerms; i++) {
     aQueries[i]->GetHasSearchTerms(&hasSearchTerms);
   }
   nsAutoCString tagsSqlFragment;
   GetTagsSqlFragment(GetTagsFolder(),
                      NS_LITERAL_CSTRING("h.id"),
                      hasSearchTerms,
                      tagsSqlFragment);
   if (IsOptimizableHistoryQuery(aQueries, aOptions,
         nsINavHistoryQueryOptions::SORT_BY_DATE_DESCENDING) ||
       IsOptimizableHistoryQuery(aQueries, aOptions,
         nsINavHistoryQueryOptions::SORT_BY_VISITCOUNT_DESCENDING)) {
     // Generate an optimized query for the history menu and most visited
     // smart bookmark.
     queryString = NS_LITERAL_CSTRING(
       "SELECT h.id, h.url, h.title AS page_title, h.rev_host, h.visit_count, h.last_visit_date, "
           "f.url, null, null, null, null, ") +
           tagsSqlFragment + NS_LITERAL_CSTRING(", h.frecency, h.hidden, h.guid "
         "FROM moz_places h "
         "LEFT OUTER JOIN moz_favicons f ON h.favicon_id = f.id "
         "WHERE h.hidden = 0 "
           "AND EXISTS (SELECT id FROM moz_historyvisits WHERE place_id = h.id "
                        "AND visit_type NOT IN ") +
                        nsPrintfCString("(0,%d,%d) ",
                                        nsINavHistoryService::TRANSITION_EMBED,
                                        nsINavHistoryService::TRANSITION_FRAMED_LINK) +
                        NS_LITERAL_CSTRING("LIMIT 1) "
           "{QUERY_OPTIONS} "
         );
     queryString.Append(NS_LITERAL_CSTRING("ORDER BY "));
     if (sortingMode == nsINavHistoryQueryOptions::SORT_BY_DATE_DESCENDING)
       queryString.Append(NS_LITERAL_CSTRING("last_visit_date DESC "));
     else
       queryString.Append(NS_LITERAL_CSTRING("visit_count DESC "));
     queryString.Append(NS_LITERAL_CSTRING("LIMIT "));
     queryString.AppendInt(aOptions->MaxResults());
     nsAutoCString additionalQueryOptions;
     queryString.ReplaceSubstring("{QUERY_OPTIONS}",
                                   additionalQueryOptions.get());
     return NS_OK;
   }
   nsAutoCString conditions;
   for (int32_t i = 0; i < aQueries.Count(); i++) {
     nsCString queryClause;
     rv = QueryToSelectClause(aQueries[i], aOptions, i, &queryClause);
     NS_ENSURE_SUCCESS(rv, rv);
     if (! queryClause.IsEmpty()) {
       aParamsPresent = true;
       if (! conditions.IsEmpty()) // exists previous clause: multiple ones are ORed
         conditions += NS_LITERAL_CSTRING(" OR ");
       conditions += NS_LITERAL_CSTRING("(") + queryClause +
         NS_LITERAL_CSTRING(")");
     }
   }
   // Determine whether we can push maxResults constraints into the queries
   // as LIMIT, or if we need to do result count clamping later
   // using FilterResultSet()
   bool useLimitClause = !NeedToFilterResultSet(aQueries, aOptions);
   PlacesSQLQueryBuilder queryStringBuilder(conditions, aOptions,
                                            useLimitClause, aAddParams,
                                            hasSearchTerms);
   rv = queryStringBuilder.GetQueryString(queryString);
   NS_ENSURE_SUCCESS(rv, rv);
   return NS_OK;
 }
 PLDHashOperator BindAdditionalParameter(nsNavHistory::StringHash::KeyType aParamName,
                                         nsCString aParamValue,
                                         void* aStatement)
 {
   mozIStorageStatement* stmt = static_cast<mozIStorageStatement*>(aStatement);
   nsresult rv = stmt->BindUTF8StringByName(aParamName, aParamValue);
   if (NS_FAILED(rv))
     return PL_DHASH_STOP;
   return PL_DHASH_NEXT;
 }
 // nsNavHistory::GetQueryResults
 //
 //    Call this to get the results from a complex query. This is used by
 //    nsNavHistoryQueryResultNode to populate its children. For simple bookmark
 //    queries, use nsNavBookmarks::QueryFolderChildren.
 //
 //    THIS DOES NOT DO SORTING. You will need to sort the container yourself
 //    when you get the results. This is because sorting depends on tree
 //    statistics that will be built from the perspective of the tree. See
 //    nsNavHistoryQueryResultNode::FillChildren
 //
 //    FIXME: This only does keyword searching for the first query, and does
 //    it ANDed with the all the rest of the queries.
 nsresult
 nsNavHistory::GetQueryResults(nsNavHistoryQueryResultNode *aResultNode,
                               const nsCOMArray<nsNavHistoryQuery>& aQueries,
                               nsNavHistoryQueryOptions *aOptions,
                               nsCOMArray<nsNavHistoryResultNode>* aResults)
 {
   NS_ENSURE_ARG_POINTER(aOptions);
   NS_ASSERTION(aResults->Count() == 0, "Initial result array must be empty");
   if (! aQueries.Count())
     return NS_ERROR_INVALID_ARG;
   nsCString queryString;
   bool paramsPresent = false;
   nsNavHistory::StringHash addParams(HISTORY_DATE_CONT_MAX);
   nsresult rv = ConstructQueryString(aQueries, aOptions, queryString,
                                      paramsPresent, addParams);
   NS_ENSURE_SUCCESS(rv,rv);
   // create statement
   nsCOMPtr<mozIStorageStatement> statement = mDB->GetStatement(queryString);
 #ifdef DEBUG
   if (!statement) {
     nsAutoCString lastErrorString;
     (void)mDB->MainConn()->GetLastErrorString(lastErrorString);
     int32_t lastError = 0;
     (void)mDB->MainConn()->GetLastError(&lastError);
     printf("Places failed to create a statement from this query:\n%s\nStorage error (%d): %s\n",
            queryString.get(), lastError, lastErrorString.get());
   }
 #endif
   NS_ENSURE_STATE(statement);
   mozStorageStatementScoper scoper(statement);
   if (paramsPresent) {
     // bind parameters
     int32_t i;
     for (i = 0; i < aQueries.Count(); i++) {
       rv = BindQueryClauseParameters(statement, i, aQueries[i], aOptions);
       NS_ENSURE_SUCCESS(rv, rv);
     }
   }
   addParams.EnumerateRead(BindAdditionalParameter, statement.get());
   // Optimize the case where there is no need for any post-query filtering.
   if (NeedToFilterResultSet(aQueries, aOptions)) {
     // Generate the top-level results.
     nsCOMArray<nsNavHistoryResultNode> toplevel;
     rv = ResultsAsList(statement, aOptions, &toplevel);
     NS_ENSURE_SUCCESS(rv, rv);
     FilterResultSet(aResultNode, toplevel, aResults, aQueries, aOptions);
   } else {
     rv = ResultsAsList(statement, aOptions, aResults);
     NS_ENSURE_SUCCESS(rv, rv);
   }
   return NS_OK;
 }
 // nsNavHistory::AddObserver
 NS_IMETHODIMP
 nsNavHistory::AddObserver(nsINavHistoryObserver* aObserver, bool aOwnsWeak)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   NS_ENSURE_ARG(aObserver);
   return mObservers.AppendWeakElement(aObserver, aOwnsWeak);
 }
 // nsNavHistory::RemoveObserver
 NS_IMETHODIMP
 nsNavHistory::RemoveObserver(nsINavHistoryObserver* aObserver)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   NS_ENSURE_ARG(aObserver);
   return mObservers.RemoveWeakElement(aObserver);
 }
 // nsNavHistory::BeginUpdateBatch
 // See RunInBatchMode
 nsresult
 nsNavHistory::BeginUpdateBatch()
 {
   if (mBatchLevel++ == 0) {
     mBatchDBTransaction = new mozStorageTransaction(mDB->MainConn(), false);
     NOTIFY_OBSERVERS(mCanNotify, mCacheObservers, mObservers,
                      nsINavHistoryObserver, OnBeginUpdateBatch());
   }
   return NS_OK;
 }
 // nsNavHistory::EndUpdateBatch
 nsresult
 nsNavHistory::EndUpdateBatch()
 {
   if (--mBatchLevel == 0) {
     if (mBatchDBTransaction) {
       DebugOnly<nsresult> rv = mBatchDBTransaction->Commit();
       NS_WARN_IF_FALSE(NS_SUCCEEDED(rv), "Batch failed to commit transaction");
       delete mBatchDBTransaction;
       mBatchDBTransaction = nullptr;
     }
     NOTIFY_OBSERVERS(mCanNotify, mCacheObservers, mObservers,
                      nsINavHistoryObserver, OnEndUpdateBatch());
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 nsNavHistory::RunInBatchMode(nsINavHistoryBatchCallback* aCallback,
                              nsISupports* aUserData)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   NS_ENSURE_ARG(aCallback);
   UpdateBatchScoper batch(*this);
   return aCallback->RunBatched(aUserData);
 }
 NS_IMETHODIMP
 nsNavHistory::GetHistoryDisabled(bool *_retval)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   NS_ENSURE_ARG_POINTER(_retval);
   *_retval = IsHistoryDisabled();
   return NS_OK;
 }
 // Browser history *************************************************************
 // nsNavHistory::RemovePagesInternal
 //
 //    Deletes a list of placeIds from history.
 //    This is an internal method used by RemovePages, RemovePagesFromHost and
 //    RemovePagesByTimeframe.
 //    Takes a comma separated list of place ids.
 //    This method does not do any observer notification.
 nsresult
 nsNavHistory::RemovePagesInternal(const nsCString& aPlaceIdsQueryString)
 {
   // Return early if there is nothing to delete.
   if (aPlaceIdsQueryString.IsEmpty())
     return NS_OK;
   mozStorageTransaction transaction(mDB->MainConn(), false);
   // Delete all visits for the specified place ids.
   nsresult rv = mDB->MainConn()->ExecuteSimpleSQL(
     NS_LITERAL_CSTRING(
       "DELETE FROM moz_historyvisits WHERE place_id IN (") +
         aPlaceIdsQueryString +
         NS_LITERAL_CSTRING(")")
   );
   NS_ENSURE_SUCCESS(rv, rv);
   rv = CleanupPlacesOnVisitsDelete(aPlaceIdsQueryString);
   NS_ENSURE_SUCCESS(rv, rv);
   // Invalidate the cached value for whether there's history or not.
   mDaysOfHistory = -1;
   return transaction.Commit();
 }
 /**
  * Performs cleanup on places that just had all their visits removed, including
  * deletion of those places.  This is an internal method used by
  * RemovePagesInternal and RemoveVisitsByTimeframe.  This method does not
  * execute in a transaction, so callers should make sure they begin one if
  * needed.
  *
  * @param aPlaceIdsQueryString
  *        A comma-separated list of place IDs, each of which just had all its
  *        visits removed
  */
 nsresult
 nsNavHistory::CleanupPlacesOnVisitsDelete(const nsCString& aPlaceIdsQueryString)
 {
   // Return early if there is nothing to delete.
   if (aPlaceIdsQueryString.IsEmpty())
     return NS_OK;
   // Collect about-to-be-deleted URIs to notify onDeleteURI.
   nsCOMPtr<mozIStorageStatement> stmt = mDB->GetStatement(NS_LITERAL_CSTRING(
     "SELECT h.id, h.url, h.guid, "
            "(SUBSTR(h.url, 1, 6) <> 'place:' "
            " AND NOT EXISTS (SELECT b.id FROM moz_bookmarks b "
                             "WHERE b.fk = h.id LIMIT 1)) as whole_entry "
     "FROM moz_places h "
     "WHERE h.id IN ( ") + aPlaceIdsQueryString + NS_LITERAL_CSTRING(")")
   );
   NS_ENSURE_STATE(stmt);
   mozStorageStatementScoper scoper(stmt);
   nsCString filteredPlaceIds;
   nsCOMArray<nsIURI> URIs;
   nsTArray<nsCString> GUIDs;
   bool hasMore;
   while (NS_SUCCEEDED(stmt->ExecuteStep(&hasMore)) && hasMore) {
     int64_t placeId;
     nsresult rv = stmt->GetInt64(0, &placeId);
     NS_ENSURE_SUCCESS(rv, rv);
     nsAutoCString URLString;
     rv = stmt->GetUTF8String(1, URLString);
     nsCString guid;
     rv = stmt->GetUTF8String(2, guid);
     int32_t wholeEntry;
     rv = stmt->GetInt32(3, &wholeEntry);
     nsCOMPtr<nsIURI> uri;
     rv = NS_NewURI(getter_AddRefs(uri), URLString);
     NS_ENSURE_SUCCESS(rv, rv);
     if (wholeEntry) {
       if (!filteredPlaceIds.IsEmpty()) {
         filteredPlaceIds.AppendLiteral(",");
       }
       filteredPlaceIds.AppendInt(placeId);
       URIs.AppendObject(uri);
       GUIDs.AppendElement(guid);
     }
     else {
       // Notify that we will delete all visits for this page, but not the page
       // itself, since it's bookmarked or a place: query.
       NOTIFY_OBSERVERS(mCanNotify, mCacheObservers, mObservers,
                        nsINavHistoryObserver,
                        OnDeleteVisits(uri, 0, guid, nsINavHistoryObserver::REASON_DELETED, 0));
     }
   }
   // if the entry is not bookmarked and is not a place: uri
   // then we can remove it from moz_places.
   // Note that we do NOT delete favicons. Any unreferenced favicons will be
   // deleted next time the browser is shut down.
   nsresult rv = mDB->MainConn()->ExecuteSimpleSQL(
     NS_LITERAL_CSTRING(
       "DELETE FROM moz_places WHERE id IN ( "
         ) + filteredPlaceIds + NS_LITERAL_CSTRING(
       ") "
     )
   );
   NS_ENSURE_SUCCESS(rv, rv);
   // Invalidate frecencies of touched places, since they need recalculation.
   rv = invalidateFrecencies(aPlaceIdsQueryString);
   NS_ENSURE_SUCCESS(rv, rv);
   // Finally notify about the removed URIs.
   for (int32_t i = 0; i < URIs.Count(); ++i) {
     NOTIFY_OBSERVERS(mCanNotify, mCacheObservers, mObservers,
                      nsINavHistoryObserver,
                      OnDeleteURI(URIs[i], GUIDs[i], nsINavHistoryObserver::REASON_DELETED));
   }
   return NS_OK;
 }
 // nsNavHistory::RemovePages
 //
 //    Removes a bunch of uris from history.
 //    Has better performance than RemovePage when deleting a lot of history.
 //    We don't do duplicates removal, URIs array should be cleaned-up before.
 NS_IMETHODIMP
 nsNavHistory::RemovePages(nsIURI **aURIs, uint32_t aLength)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   NS_ENSURE_ARG(aURIs);
   nsresult rv;
   // build a list of place ids to delete
   nsCString deletePlaceIdsQueryString;
   for (uint32_t i = 0; i < aLength; i++) {
     int64_t placeId;
     nsAutoCString guid;
     rv = GetIdForPage(aURIs[i], &placeId, guid);
     NS_ENSURE_SUCCESS(rv, rv);
     if (placeId != 0) {
       if (!deletePlaceIdsQueryString.IsEmpty())
         deletePlaceIdsQueryString.AppendLiteral(",");
       deletePlaceIdsQueryString.AppendInt(placeId);
     }
   }
   UpdateBatchScoper batch(*this); // sends Begin/EndUpdateBatch to observers
   rv = RemovePagesInternal(deletePlaceIdsQueryString);
   NS_ENSURE_SUCCESS(rv, rv);
   // Clear the registered embed visits.
   clearEmbedVisits();
   return NS_OK;
 }
 // nsNavHistory::RemovePage
 //
 //    Removes all visits and the main history entry for the given URI.
 //    Silently fails if we have no knowledge of the page.
 NS_IMETHODIMP
 nsNavHistory::RemovePage(nsIURI *aURI)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   NS_ENSURE_ARG(aURI);
   // Build a list of place ids to delete.
   int64_t placeId;
   nsAutoCString guid;
   nsresult rv = GetIdForPage(aURI, &placeId, guid);
   NS_ENSURE_SUCCESS(rv, rv);
   if (placeId == 0) {
     return NS_OK;
   }
   nsAutoCString deletePlaceIdQueryString;
   deletePlaceIdQueryString.AppendInt(placeId);
   rv = RemovePagesInternal(deletePlaceIdQueryString);
   NS_ENSURE_SUCCESS(rv, rv);
   // Clear the registered embed visits.
   clearEmbedVisits();
   return NS_OK;
 }
 // nsNavHistory::RemovePagesFromHost
 //
 //    This function will delete all history information about pages from a
 //    given host. If aEntireDomain is set, we will also delete pages from
 //    sub hosts (so if we are passed in "microsoft.com" we delete
 //    "www.microsoft.com", "msdn.microsoft.com", etc.). An empty host name
 //    means local files and anything else with no host name. You can also pass
 //    in the localized "(local files)" title given to you from a history query.
 //
 //    Silently fails if we have no knowledge of the host.
 //
 //    This sends onBeginUpdateBatch/onEndUpdateBatch to observers
 NS_IMETHODIMP
 nsNavHistory::RemovePagesFromHost(const nsACString& aHost, bool aEntireDomain)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   nsresult rv;
   // Local files don't have any host name. We don't want to delete all files in
   // history when we get passed an empty string, so force to exact match
   if (aHost.IsEmpty())
     aEntireDomain = false;
   // translate "(local files)" to an empty host name
   // be sure to use the TitleForDomain to get the localized name
   nsCString localFiles;
   TitleForDomain(EmptyCString(), localFiles);
   nsAutoString host16;
   if (!aHost.Equals(localFiles))
     CopyUTF8toUTF16(aHost, host16);
   // nsISupports version of the host string for passing to observers
   nsCOMPtr<nsISupportsString> hostSupports(do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID, &rv));
   NS_ENSURE_SUCCESS(rv, rv);
   rv = hostSupports->SetData(host16);
   NS_ENSURE_SUCCESS(rv, rv);
   // see BindQueryClauseParameters for how this host selection works
   nsAutoString revHostDot;
   GetReversedHostname(host16, revHostDot);
   NS_ASSERTION(revHostDot[revHostDot.Length() - 1] == '.', "Invalid rev. host");
   nsAutoString revHostSlash(revHostDot);
   revHostSlash.Truncate(revHostSlash.Length() - 1);
   revHostSlash.Append(NS_LITERAL_STRING("/"));
   // build condition string based on host selection type
   nsAutoCString conditionString;
   if (aEntireDomain)
     conditionString.AssignLiteral("rev_host >= ?1 AND rev_host < ?2 ");
   else
     conditionString.AssignLiteral("rev_host = ?1 ");
   // create statement depending on delete type
   nsCOMPtr<mozIStorageStatement> statement = mDB->GetStatement(
     NS_LITERAL_CSTRING("SELECT id FROM moz_places WHERE ") + conditionString
   );
   NS_ENSURE_STATE(statement);
   mozStorageStatementScoper scoper(statement);
   rv = statement->BindStringByIndex(0, revHostDot);
   NS_ENSURE_SUCCESS(rv, rv);
   if (aEntireDomain) {
     rv = statement->BindStringByIndex(1, revHostSlash);
     NS_ENSURE_SUCCESS(rv, rv);
   }
   nsCString hostPlaceIds;
   bool hasMore = false;
   while (NS_SUCCEEDED(statement->ExecuteStep(&hasMore)) && hasMore) {
     if (!hostPlaceIds.IsEmpty())
       hostPlaceIds.AppendLiteral(",");
     int64_t placeId;
     rv = statement->GetInt64(0, &placeId);
     NS_ENSURE_SUCCESS(rv, rv);
     hostPlaceIds.AppendInt(placeId);
   }
   // force a full refresh calling onEndUpdateBatch (will call Refresh())
   UpdateBatchScoper batch(*this); // sends Begin/EndUpdateBatch to observers
   rv = RemovePagesInternal(hostPlaceIds);
   NS_ENSURE_SUCCESS(rv, rv);
   // Clear the registered embed visits.
   clearEmbedVisits();
   return NS_OK;
 }
 // nsNavHistory::RemovePagesByTimeframe
 //
 //    This function will delete all history information about
 //    pages for a given timeframe.
 //    Limits are included: aBeginTime <= timeframe <= aEndTime
 //
 //    This method sends onBeginUpdateBatch/onEndUpdateBatch to observers
 NS_IMETHODIMP
 nsNavHistory::RemovePagesByTimeframe(PRTime aBeginTime, PRTime aEndTime)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   nsresult rv;
   // build a list of place ids to delete
   nsCString deletePlaceIdsQueryString;
   // we only need to know if a place has a visit into the given timeframe
   // this query is faster than actually selecting in moz_historyvisits
   nsCOMPtr<mozIStorageStatement> selectByTime = mDB->GetStatement(
     "SELECT h.id FROM moz_places h WHERE "
       "EXISTS "
         "(SELECT id FROM moz_historyvisits v WHERE v.place_id = h.id "
           "AND v.visit_date >= :from_date AND v.visit_date <= :to_date LIMIT 1)"
   );
   NS_ENSURE_STATE(selectByTime);
   mozStorageStatementScoper selectByTimeScoper(selectByTime);
   rv = selectByTime->BindInt64ByName(NS_LITERAL_CSTRING("from_date"), aBeginTime);
   NS_ENSURE_SUCCESS(rv, rv);
   rv = selectByTime->BindInt64ByName(NS_LITERAL_CSTRING("to_date"), aEndTime);
   NS_ENSURE_SUCCESS(rv, rv);
   bool hasMore = false;
   while (NS_SUCCEEDED(selectByTime->ExecuteStep(&hasMore)) && hasMore) {
     int64_t placeId;
     rv = selectByTime->GetInt64(0, &placeId);
     NS_ENSURE_SUCCESS(rv, rv);
     if (placeId != 0) {
       if (!deletePlaceIdsQueryString.IsEmpty())
         deletePlaceIdsQueryString.AppendLiteral(",");
       deletePlaceIdsQueryString.AppendInt(placeId);
     }
   }
   // force a full refresh calling onEndUpdateBatch (will call Refresh())
   UpdateBatchScoper batch(*this); // sends Begin/EndUpdateBatch to observers
   rv = RemovePagesInternal(deletePlaceIdsQueryString);
   NS_ENSURE_SUCCESS(rv, rv);
   // Clear the registered embed visits.
   clearEmbedVisits();
   return NS_OK;
 }
 /**
  * Removes all visits in a given timeframe.  Limits are included:
  * aBeginTime <= timeframe <= aEndTime.  Any place that becomes unvisited
  * as a result will also be deleted.
  *
  * Note that removal is performed in batch, so observers will not be
  * notified of individual places that are deleted.  Instead they will be
  * notified onBeginUpdateBatch and onEndUpdateBatch.
  *
  * @param aBeginTime
  *        The start of the timeframe, inclusive
  * @param aEndTime
  *        The end of the timeframe, inclusive
  */
 NS_IMETHODIMP
 nsNavHistory::RemoveVisitsByTimeframe(PRTime aBeginTime, PRTime aEndTime)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   nsresult rv;
   // Build a list of place IDs whose visits fall entirely within the timespan.
   // These places will be deleted by the call to CleanupPlacesOnVisitsDelete
   // below.
   nsCString deletePlaceIdsQueryString;
   {
     nsCOMPtr<mozIStorageStatement> selectByTime = mDB->GetStatement(
       "SELECT place_id "
       "FROM moz_historyvisits "
       "WHERE :from_date <= visit_date AND visit_date <= :to_date "
       "EXCEPT "
       "SELECT place_id "
       "FROM moz_historyvisits "
       "WHERE visit_date < :from_date OR :to_date < visit_date"
     );
     NS_ENSURE_STATE(selectByTime);
     mozStorageStatementScoper selectByTimeScoper(selectByTime);
     rv = selectByTime->BindInt64ByName(NS_LITERAL_CSTRING("from_date"), aBeginTime);
     NS_ENSURE_SUCCESS(rv, rv);
     rv = selectByTime->BindInt64ByName(NS_LITERAL_CSTRING("to_date"), aEndTime);
     NS_ENSURE_SUCCESS(rv, rv);
     bool hasMore = false;
     while (NS_SUCCEEDED(selectByTime->ExecuteStep(&hasMore)) && hasMore) {
       int64_t placeId;
       rv = selectByTime->GetInt64(0, &placeId);
       NS_ENSURE_SUCCESS(rv, rv);
       // placeId should not be <= 0, but be defensive.
       if (placeId > 0) {
         if (!deletePlaceIdsQueryString.IsEmpty())
           deletePlaceIdsQueryString.AppendLiteral(",");
         deletePlaceIdsQueryString.AppendInt(placeId);
       }
     }
   }
   // force a full refresh calling onEndUpdateBatch (will call Refresh())
   UpdateBatchScoper batch(*this); // sends Begin/EndUpdateBatch to observers
   mozStorageTransaction transaction(mDB->MainConn(), false);
   // Delete all visits within the timeframe.
   nsCOMPtr<mozIStorageStatement> deleteVisitsStmt = mDB->GetStatement(
     "DELETE FROM moz_historyvisits "
     "WHERE :from_date <= visit_date AND visit_date <= :to_date"
   );
   NS_ENSURE_STATE(deleteVisitsStmt);
   mozStorageStatementScoper deletevisitsScoper(deleteVisitsStmt);
   rv = deleteVisitsStmt->BindInt64ByName(NS_LITERAL_CSTRING("from_date"), aBeginTime);
   NS_ENSURE_SUCCESS(rv, rv);
   rv = deleteVisitsStmt->BindInt64ByName(NS_LITERAL_CSTRING("to_date"), aEndTime);
   NS_ENSURE_SUCCESS(rv, rv);
   rv = deleteVisitsStmt->Execute();
   NS_ENSURE_SUCCESS(rv, rv);
   rv = CleanupPlacesOnVisitsDelete(deletePlaceIdsQueryString);
   NS_ENSURE_SUCCESS(rv, rv);
   rv = transaction.Commit();
   NS_ENSURE_SUCCESS(rv, rv);
   // Clear the registered embed visits.
   clearEmbedVisits();
   // Invalidate the cached value for whether there's history or not.
   mDaysOfHistory = -1;
   return NS_OK;
 }
 // nsNavHistory::RemoveAllPages
 //
 //    This function is used to clear history.
 NS_IMETHODIMP
 nsNavHistory::RemoveAllPages()
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   nsresult rv = mDB->MainConn()->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
     "DELETE FROM moz_historyvisits"
   ));
   NS_ENSURE_SUCCESS(rv, rv);
   // Clear the registered embed visits.
   clearEmbedVisits();
   // Update the cached value for whether there's history or not.
   mDaysOfHistory = 0;
   // Expiration will take care of orphans.
   NOTIFY_OBSERVERS(mCanNotify, mCacheObservers, mObservers,
                    nsINavHistoryObserver, OnClearHistory());
   // Invalidate frecencies for the remaining places.  This must happen
   // after the notification to ensure it runs enqueued to expiration.
   rv = invalidateFrecencies(EmptyCString());
   NS_WARN_IF_FALSE(NS_SUCCEEDED(rv), "failed to fix invalid frecencies");
   return NS_OK;
 }
 // Call this method before visiting a URL in order to help determine the
 // transition type of the visit.
 //
 // @see MarkPageAsFollowedBookmark
 NS_IMETHODIMP
 nsNavHistory::MarkPageAsTyped(nsIURI *aURI)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   NS_ENSURE_ARG(aURI);
   // don't add when history is disabled
   if (IsHistoryDisabled())
     return NS_OK;
   nsAutoCString uriString;
   nsresult rv = aURI->GetSpec(uriString);
   NS_ENSURE_SUCCESS(rv, rv);
   // if URL is already in the typed queue, then we need to remove the old one
   int64_t unusedEventTime;
   if (mRecentTyped.Get(uriString, &unusedEventTime))
     mRecentTyped.Remove(uriString);
   if (mRecentTyped.Count() > RECENT_EVENT_QUEUE_MAX_LENGTH)
     ExpireNonrecentEvents(&mRecentTyped);
   mRecentTyped.Put(uriString, GetNow());
   return NS_OK;
 }
 // Call this method before visiting a URL in order to help determine the
 // transition type of the visit.
 //
 // @see MarkPageAsTyped
 NS_IMETHODIMP
 nsNavHistory::MarkPageAsFollowedLink(nsIURI *aURI)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   NS_ENSURE_ARG(aURI);
   // don't add when history is disabled
   if (IsHistoryDisabled())
     return NS_OK;
   nsAutoCString uriString;
   nsresult rv = aURI->GetSpec(uriString);
   NS_ENSURE_SUCCESS(rv, rv);
   // if URL is already in the links queue, then we need to remove the old one
   int64_t unusedEventTime;
   if (mRecentLink.Get(uriString, &unusedEventTime))
     mRecentLink.Remove(uriString);
   if (mRecentLink.Count() > RECENT_EVENT_QUEUE_MAX_LENGTH)
     ExpireNonrecentEvents(&mRecentLink);
   mRecentLink.Put(uriString, GetNow());
   return NS_OK;
 }
 // nsNavHistory::SetCharsetForURI
 //
 // Sets the character-set for a URI.
 // If aCharset is empty remove character-set annotation for aURI.
 NS_IMETHODIMP
 nsNavHistory::SetCharsetForURI(nsIURI* aURI,
                                const nsAString& aCharset)
 {
   PLACES_WARN_DEPRECATED();
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   NS_ENSURE_ARG(aURI);
   nsAnnotationService* annosvc = nsAnnotationService::GetAnnotationService();
   NS_ENSURE_TRUE(annosvc, NS_ERROR_OUT_OF_MEMORY);
   if (aCharset.IsEmpty()) {
     // remove the current page character-set annotation
     nsresult rv = annosvc->RemovePageAnnotation(aURI, CHARSET_ANNO);
     NS_ENSURE_SUCCESS(rv, rv);
   }
   else {
     // Set page character-set annotation, silently overwrite if already exists
     nsresult rv = annosvc->SetPageAnnotationString(aURI, CHARSET_ANNO,
                                                    aCharset, 0,
                                                    nsAnnotationService::EXPIRE_NEVER);
     if (rv == NS_ERROR_INVALID_ARG) {
       // We don't have this page.  Silently fail.
       return NS_OK;
     }
     else if (NS_FAILED(rv))
       return rv;
   }
   return NS_OK;
 }
 // nsNavHistory::GetCharsetForURI
 //
 // Get the last saved character-set for a URI.
 NS_IMETHODIMP
 nsNavHistory::GetCharsetForURI(nsIURI* aURI,
                                nsAString& aCharset)
 {
   PLACES_WARN_DEPRECATED();
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   NS_ENSURE_ARG(aURI);
   nsAnnotationService* annosvc = nsAnnotationService::GetAnnotationService();
   NS_ENSURE_TRUE(annosvc, NS_ERROR_OUT_OF_MEMORY);
   nsAutoString charset;
   nsresult rv = annosvc->GetPageAnnotationString(aURI, CHARSET_ANNO, aCharset);
   if (NS_FAILED(rv)) {
     // be sure to return an empty string if character-set is not found
     aCharset.Truncate();
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 nsNavHistory::GetPageTitle(nsIURI* aURI, nsAString& aTitle)
 {
   PLACES_WARN_DEPRECATED();
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   NS_ENSURE_ARG(aURI);
   aTitle.Truncate(0);
   nsCOMPtr<mozIStorageStatement> stmt = mDB->GetStatement(
     "SELECT id, url, title, rev_host, visit_count, guid "
     "FROM moz_places "
     "WHERE url = :page_url "
   );
   NS_ENSURE_STATE(stmt);
   mozStorageStatementScoper scoper(stmt);
   nsresult rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("page_url"), aURI);
   NS_ENSURE_SUCCESS(rv, rv);
   bool hasResults = false;
   rv = stmt->ExecuteStep(&hasResults);
   NS_ENSURE_SUCCESS(rv, rv);
   if (!hasResults) {
     aTitle.SetIsVoid(true);
     return NS_OK; // Not found, return a void string.
   }
   rv = stmt->GetString(2, aTitle);
   NS_ENSURE_SUCCESS(rv, rv);
   return NS_OK;
 }
 ////////////////////////////////////////////////////////////////////////////////
 //// mozIStorageVacuumParticipant
 NS_IMETHODIMP
 nsNavHistory::GetDatabaseConnection(mozIStorageConnection** _DBConnection)
 {
   return GetDBConnection(_DBConnection);
 }
 NS_IMETHODIMP
 nsNavHistory::GetExpectedDatabasePageSize(int32_t* _expectedPageSize)
 {
   NS_ENSURE_STATE(mDB);
   NS_ENSURE_STATE(mDB->MainConn());
   return mDB->MainConn()->GetDefaultPageSize(_expectedPageSize);
 }
 NS_IMETHODIMP
 nsNavHistory::OnBeginVacuum(bool* _vacuumGranted)
 {
   // TODO: Check if we have to deny the vacuum in some heavy-load case.
   // We could maybe want to do that during batches?
   *_vacuumGranted = true;
   return NS_OK;
 }
 NS_IMETHODIMP
 nsNavHistory::OnEndVacuum(bool aSucceeded)
 {
   NS_WARN_IF_FALSE(aSucceeded, "Places.sqlite vacuum failed.");
   return NS_OK;
 }
 ////////////////////////////////////////////////////////////////////////////////
 //// nsPIPlacesDatabase
 NS_IMETHODIMP
 nsNavHistory::GetDBConnection(mozIStorageConnection **_DBConnection)
 {
   NS_ENSURE_ARG_POINTER(_DBConnection);
   nsRefPtr<mozIStorageConnection> connection = mDB->MainConn();
   connection.forget(_DBConnection);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsNavHistory::AsyncExecuteLegacyQueries(nsINavHistoryQuery** aQueries,
                                         uint32_t aQueryCount,
                                         nsINavHistoryQueryOptions* aOptions,
                                         mozIStorageStatementCallback* aCallback,
                                         mozIStoragePendingStatement** _stmt)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   NS_ENSURE_ARG(aQueries);
   NS_ENSURE_ARG(aOptions);
   NS_ENSURE_ARG(aCallback);
   NS_ENSURE_ARG_POINTER(_stmt);
   nsCOMArray<nsNavHistoryQuery> queries;
   for (uint32_t i = 0; i < aQueryCount; i ++) {
     nsCOMPtr<nsNavHistoryQuery> query = do_QueryInterface(aQueries[i]);
     NS_ENSURE_STATE(query);
     queries.AppendObject(query);
   }
   NS_ENSURE_ARG_MIN(queries.Count(), 1);
   nsCOMPtr<nsNavHistoryQueryOptions> options = do_QueryInterface(aOptions);
   NS_ENSURE_ARG(options);
   nsCString queryString;
   bool paramsPresent = false;
   nsNavHistory::StringHash addParams(HISTORY_DATE_CONT_MAX);
   nsresult rv = ConstructQueryString(queries, options, queryString,
                                      paramsPresent, addParams);
   NS_ENSURE_SUCCESS(rv,rv);
   nsCOMPtr<mozIStorageAsyncStatement> statement =
     mDB->GetAsyncStatement(queryString);
   NS_ENSURE_STATE(statement);
 #ifdef DEBUG
   if (NS_FAILED(rv)) {
     nsAutoCString lastErrorString;
     (void)mDB->MainConn()->GetLastErrorString(lastErrorString);
     int32_t lastError = 0;
     (void)mDB->MainConn()->GetLastError(&lastError);
     printf("Places failed to create a statement from this query:\n%s\nStorage error (%d): %s\n",
            queryString.get(), lastError, lastErrorString.get());
   }
 #endif
   NS_ENSURE_SUCCESS(rv, rv);
   if (paramsPresent) {
     // bind parameters
     int32_t i;
     for (i = 0; i < queries.Count(); i++) {
       rv = BindQueryClauseParameters(statement, i, queries[i], options);
       NS_ENSURE_SUCCESS(rv, rv);
     }
   }
   addParams.EnumerateRead(BindAdditionalParameter, statement.get());
   rv = statement->ExecuteAsync(aCallback, _stmt);
   NS_ENSURE_SUCCESS(rv, rv);
   return NS_OK;
 }
 // nsPIPlacesHistoryListenersNotifier ******************************************
 NS_IMETHODIMP
 nsNavHistory::NotifyOnPageExpired(nsIURI *aURI, PRTime aVisitTime,
                                   bool aWholeEntry, const nsACString& aGUID,
                                   uint16_t aReason, uint32_t aTransitionType)
 {
   // Invalidate the cached value for whether there's history or not.
   mDaysOfHistory = -1;
   MOZ_ASSERT(!aGUID.IsEmpty());
   if (aWholeEntry) {
     // Notify our observers that the page has been removed.
     NOTIFY_OBSERVERS(mCanNotify, mCacheObservers, mObservers,
                      nsINavHistoryObserver, OnDeleteURI(aURI, aGUID, aReason));
   }
   else {
     // Notify our observers that some visits for the page have been removed.
     NOTIFY_OBSERVERS(mCanNotify, mCacheObservers, mObservers,
                      nsINavHistoryObserver,
                      OnDeleteVisits(aURI, aVisitTime, aGUID, aReason,
                                     aTransitionType));
   }
   return NS_OK;
 }
 ////////////////////////////////////////////////////////////////////////////////
 //// nsIObserver
 NS_IMETHODIMP
 nsNavHistory::Observe(nsISupports *aSubject, const char *aTopic,
                     const char16_t *aData)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   if (strcmp(aTopic, TOPIC_PROFILE_TEARDOWN) == 0 ||
       strcmp(aTopic, TOPIC_PROFILE_CHANGE) == 0) {
     // These notifications are used by tests to simulate a Places shutdown.
     // They should just be forwarded to the Database handle.
     mDB->Observe(aSubject, aTopic, aData);
   }
   else if (strcmp(aTopic, TOPIC_PLACES_CONNECTION_CLOSED) == 0) {
       // Don't even try to notify observers from this point on, the category
       // cache would init services that could try to use our APIs.
       mCanNotify = false;
   }
 #ifdef MOZ_XUL
   else if (strcmp(aTopic, TOPIC_AUTOCOMPLETE_FEEDBACK_INCOMING) == 0) {
     nsCOMPtr<nsIAutoCompleteInput> input = do_QueryInterface(aSubject);
     if (!input)
       return NS_OK;
     // If the source is a private window, don't add any input history.
     bool isPrivate;
     nsresult rv = input->GetInPrivateContext(&isPrivate);
     NS_ENSURE_SUCCESS(rv, rv);
     if (isPrivate)
       return NS_OK;
     nsCOMPtr<nsIAutoCompletePopup> popup;
     input->GetPopup(getter_AddRefs(popup));
     if (!popup)
       return NS_OK;
     nsCOMPtr<nsIAutoCompleteController> controller;
     input->GetController(getter_AddRefs(controller));
     if (!controller)
       return NS_OK;
     // Don't bother if the popup is closed
     bool open;
     rv = popup->GetPopupOpen(&open);
     NS_ENSURE_SUCCESS(rv, rv);
     if (!open)
       return NS_OK;
     // Ignore if nothing selected from the popup
     int32_t selectedIndex;
     rv = popup->GetSelectedIndex(&selectedIndex);
     NS_ENSURE_SUCCESS(rv, rv);
     if (selectedIndex == -1)
       return NS_OK;
     rv = AutoCompleteFeedback(selectedIndex, controller);
     NS_ENSURE_SUCCESS(rv, rv);
   }
 #endif
   else if (strcmp(aTopic, TOPIC_PREF_CHANGED) == 0) {
     LoadPrefs();
   }
   else if (strcmp(aTopic, TOPIC_IDLE_DAILY) == 0) {
     (void)DecayFrecency();
   }
   return NS_OK;
 }
 namespace {
 class DecayFrecencyCallback : public AsyncStatementTelemetryTimer
 {
 public:
   DecayFrecencyCallback()
     : AsyncStatementTelemetryTimer(Telemetry::PLACES_IDLE_FRECENCY_DECAY_TIME_MS)
   {
   }
   NS_IMETHOD HandleCompletion(uint16_t aReason)
   {
     (void)AsyncStatementTelemetryTimer::HandleCompletion(aReason);
     if (aReason == REASON_FINISHED) {
       nsNavHistory *navHistory = nsNavHistory::GetHistoryService();
       NS_ENSURE_STATE(navHistory);
       navHistory->NotifyManyFrecenciesChanged();
     }
     return NS_OK;
   }
 };
 } // anonymous namespace
 nsresult
 nsNavHistory::DecayFrecency()
 {
   nsresult rv = FixInvalidFrecencies();
   NS_ENSURE_SUCCESS(rv, rv);
   // Globally decay places frecency rankings to estimate reduced frecency
   // values of pages that haven't been visited for a while, i.e., they do
   // not get an updated frecency.  A scaling factor of .975 results in .5 the
   // original value after 28 days.
   // When changing the scaling factor, ensure that the barrier in
   // moz_places_afterupdate_frecency_trigger still ignores these changes.
   nsCOMPtr<mozIStorageAsyncStatement> decayFrecency = mDB->GetAsyncStatement(
     "UPDATE moz_places SET frecency = ROUND(frecency * .975) "
     "WHERE frecency > 0"
   );
   NS_ENSURE_STATE(decayFrecency);
   // Decay potentially unused adaptive entries (e.g. those that are at 1)
   // to allow better chances for new entries that will start at 1.
   nsCOMPtr<mozIStorageAsyncStatement> decayAdaptive = mDB->GetAsyncStatement(
     "UPDATE moz_inputhistory SET use_count = use_count * .975"
   );
   NS_ENSURE_STATE(decayAdaptive);
   // Delete any adaptive entries that won't help in ordering anymore.
   nsCOMPtr<mozIStorageAsyncStatement> deleteAdaptive = mDB->GetAsyncStatement(
     "DELETE FROM moz_inputhistory WHERE use_count < .01"
   );
   NS_ENSURE_STATE(deleteAdaptive);
   mozIStorageBaseStatement *stmts[] = {
     decayFrecency.get(),
     decayAdaptive.get(),
     deleteAdaptive.get()
   };
   nsCOMPtr<mozIStoragePendingStatement> ps;
   nsRefPtr<DecayFrecencyCallback> cb = new DecayFrecencyCallback();
   rv = mDB->MainConn()->ExecuteAsync(stmts, ArrayLength(stmts), cb,
                                      getter_AddRefs(ps));
   NS_ENSURE_SUCCESS(rv, rv);
   return NS_OK;
 }
 // Query stuff *****************************************************************
 // Helper class for QueryToSelectClause
 //
 // This class helps to build part of the WHERE clause. It supports
 // multiple queries by appending the query index to the parameter name.
 // For the query with index 0 the parameter name is not altered what
 // allows using this parameter in other situations (see SelectAsSite).
 class ConditionBuilder
 {
 public:
   ConditionBuilder(int32_t aQueryIndex): mQueryIndex(aQueryIndex)
   { }
   ConditionBuilder& Condition(const char* aStr)
   {
     if (!mClause.IsEmpty())
       mClause.AppendLiteral(" AND ");
     Str(aStr);
     return *this;
   }
   ConditionBuilder& Str(const char* aStr)
   {
     mClause.Append(' ');
     mClause.Append(aStr);
     mClause.Append(' ');
     return *this;
   }
   ConditionBuilder& Param(const char* aParam)
   {
     mClause.Append(' ');
     if (!mQueryIndex)
       mClause.Append(aParam);
     else
       mClause += nsPrintfCString("%s%d", aParam, mQueryIndex);
     mClause.Append(' ');
     return *this;
   }
   void GetClauseString(nsCString& aResult)
   {
     aResult = mClause;
   }
 private:
   int32_t mQueryIndex;
   nsCString mClause;
 };
 // nsNavHistory::QueryToSelectClause
 //
 //    THE BEHAVIOR SHOULD BE IN SYNC WITH BindQueryClauseParameters
 //
 //    I don't check return values from the query object getters because there's
 //    no way for those to fail.
 nsresult
 nsNavHistory::QueryToSelectClause(nsNavHistoryQuery* aQuery, // const
                                   nsNavHistoryQueryOptions* aOptions,
                                   int32_t aQueryIndex,
                                   nsCString* aClause)
 {
   bool hasIt;
   bool excludeQueries = aOptions->ExcludeQueries();
   ConditionBuilder clause(aQueryIndex);
   if ((NS_SUCCEEDED(aQuery->GetHasBeginTime(&hasIt)) && hasIt) ||
     (NS_SUCCEEDED(aQuery->GetHasEndTime(&hasIt)) && hasIt)) {
     clause.Condition("EXISTS (SELECT 1 FROM moz_historyvisits "
                               "WHERE place_id = h.id");
     // begin time
     if (NS_SUCCEEDED(aQuery->GetHasBeginTime(&hasIt)) && hasIt)
       clause.Condition("visit_date >=").Param(":begin_time");
     // end time
     if (NS_SUCCEEDED(aQuery->GetHasEndTime(&hasIt)) && hasIt)
       clause.Condition("visit_date <=").Param(":end_time");
     clause.Str(" LIMIT 1)");
   }
   // search terms
   bool hasSearchTerms;
   if (NS_SUCCEEDED(aQuery->GetHasSearchTerms(&hasSearchTerms)) && hasSearchTerms) {
     // Re-use the autocomplete_match function.  Setting the behavior to 0
     // it can match everything and work as a nice case insensitive comparator.
     clause.Condition("AUTOCOMPLETE_MATCH(").Param(":search_string")
           .Str(", h.url, page_title, tags, ")
           .Str(nsPrintfCString("0, 0, 0, 0, %d, 0)",
                                mozIPlacesAutoComplete::MATCH_ANYWHERE_UNMODIFIED).get());
     // Serching by terms implicitly exclude queries.
     excludeQueries = true;
   }
   // min and max visit count
   if (aQuery->MinVisits() >= 0)
     clause.Condition("h.visit_count >=").Param(":min_visits");
   if (aQuery->MaxVisits() >= 0)
     clause.Condition("h.visit_count <=").Param(":max_visits");
   // only bookmarked, has no affect on bookmarks-only queries
   if (aOptions->QueryType() != nsINavHistoryQueryOptions::QUERY_TYPE_BOOKMARKS &&
       aQuery->OnlyBookmarked())
     clause.Condition("EXISTS (SELECT b.fk FROM moz_bookmarks b WHERE b.type = ")
           .Str(nsPrintfCString("%d", nsNavBookmarks::TYPE_BOOKMARK).get())
           .Str("AND b.fk = h.id)");
   // domain
   if (NS_SUCCEEDED(aQuery->GetHasDomain(&hasIt)) && hasIt) {
     bool domainIsHost = false;
     aQuery->GetDomainIsHost(&domainIsHost);
     if (domainIsHost)
       clause.Condition("h.rev_host =").Param(":domain_lower");
     else
       // see domain setting in BindQueryClauseParameters for why we do this
       clause.Condition("h.rev_host >=").Param(":domain_lower")
             .Condition("h.rev_host <").Param(":domain_upper");
   }
   // URI
   if (NS_SUCCEEDED(aQuery->GetHasUri(&hasIt)) && hasIt) {
     if (aQuery->UriIsPrefix()) {
       clause.Condition("h.url >= ").Param(":uri")
             .Condition("h.url <= ").Param(":uri_upper");
     }
     else
       clause.Condition("h.url =").Param(":uri");
   }
   // annotation
   aQuery->GetHasAnnotation(&hasIt);
   if (hasIt) {
     clause.Condition("");
     if (aQuery->AnnotationIsNot())
       clause.Str("NOT");
     clause.Str(
       "EXISTS "
         "(SELECT h.id "
          "FROM moz_annos anno "
          "JOIN moz_anno_attributes annoname "
            "ON anno.anno_attribute_id = annoname.id "
          "WHERE anno.place_id = h.id "
            "AND annoname.name = ").Param(":anno").Str(")");
     // annotation-based queries don't get the common conditions, so you get
     // all URLs with that annotation
   }
   // tags
   const nsTArray<nsString> &tags = aQuery->Tags();
   if (tags.Length() > 0) {
     clause.Condition("h.id");
     if (aQuery->TagsAreNot())
       clause.Str("NOT");
     clause.Str(
       "IN "
         "(SELECT bms.fk "
          "FROM moz_bookmarks bms "
          "JOIN moz_bookmarks tags ON bms.parent = tags.id "
          "WHERE tags.parent =").
            Param(":tags_folder").
            Str("AND tags.title IN (");
     for (uint32_t i = 0; i < tags.Length(); ++i) {
       nsPrintfCString param(":tag%d_", i);
       clause.Param(param.get());
       if (i < tags.Length() - 1)
         clause.Str(",");
     }
     clause.Str(")");
     if (!aQuery->TagsAreNot())
       clause.Str("GROUP BY bms.fk HAVING count(*) >=").Param(":tag_count");
     clause.Str(")");
   }
   // transitions
   const nsTArray<uint32_t>& transitions = aQuery->Transitions();
   for (uint32_t i = 0; i < transitions.Length(); ++i) {
     nsPrintfCString param(":transition%d_", i);
     clause.Condition("h.id IN (SELECT place_id FROM moz_historyvisits "
                              "WHERE visit_type = ")
           .Param(param.get())
           .Str(")");
   }
   // folders
   const nsTArray<int64_t>& folders = aQuery->Folders();
   if (folders.Length() > 0) {
     nsTArray<int64_t> includeFolders;
     includeFolders.AppendElements(folders);
     nsNavBookmarks* bookmarks = nsNavBookmarks::GetBookmarksService();
     NS_ENSURE_STATE(bookmarks);
     for (nsTArray<int64_t>::size_type i = 0; i < folders.Length(); ++i) {
       nsTArray<int64_t> subFolders;
       if (NS_FAILED(bookmarks->GetDescendantFolders(folders[i], subFolders)))
         continue;
       includeFolders.AppendElements(subFolders);
     }
     clause.Condition("b.parent IN(");
     for (nsTArray<int64_t>::size_type i = 0; i < includeFolders.Length(); ++i) {
       clause.Str(nsPrintfCString("%lld", includeFolders[i]).get());
       if (i < includeFolders.Length() - 1) {
         clause.Str(",");
       }
     }
     clause.Str(")");
   }
   if (excludeQueries) {
     // Serching by terms implicitly exclude queries.
     clause.Condition("NOT h.url BETWEEN 'place:' AND 'place;'");
   }
   clause.GetClauseString(*aClause);
   return NS_OK;
 }
 // nsNavHistory::BindQueryClauseParameters
 //
 //    THE BEHAVIOR SHOULD BE IN SYNC WITH QueryToSelectClause
 nsresult
 nsNavHistory::BindQueryClauseParameters(mozIStorageBaseStatement* statement,
                                         int32_t aQueryIndex,
                                         nsNavHistoryQuery* aQuery, // const
                                         nsNavHistoryQueryOptions* aOptions)
 {
   nsresult rv;
   bool hasIt;
   // Append numbered index to param names, to replace them correctly in
   // case of multiple queries.  If we have just one query we don't change the
   // param name though.
   nsAutoCString qIndex;
   if (aQueryIndex > 0)
     qIndex.AppendInt(aQueryIndex);
   // begin time
   if (NS_SUCCEEDED(aQuery->GetHasBeginTime(&hasIt)) && hasIt) {
     PRTime time = NormalizeTime(aQuery->BeginTimeReference(),
                                 aQuery->BeginTime());
     rv = statement->BindInt64ByName(
       NS_LITERAL_CSTRING("begin_time") + qIndex, time);
     NS_ENSURE_SUCCESS(rv, rv);
   }
   // end time
   if (NS_SUCCEEDED(aQuery->GetHasEndTime(&hasIt)) && hasIt) {
     PRTime time = NormalizeTime(aQuery->EndTimeReference(),
                                 aQuery->EndTime());
     rv = statement->BindInt64ByName(
       NS_LITERAL_CSTRING("end_time") + qIndex, time
     );
     NS_ENSURE_SUCCESS(rv, rv);
   }
   // search terms
   if (NS_SUCCEEDED(aQuery->GetHasSearchTerms(&hasIt)) && hasIt) {
     rv = statement->BindStringByName(
       NS_LITERAL_CSTRING("search_string") + qIndex,
       aQuery->SearchTerms()
     );
     NS_ENSURE_SUCCESS(rv, rv);
   }
   // min and max visit count
   int32_t visits = aQuery->MinVisits();
   if (visits >= 0) {
     rv = statement->BindInt32ByName(
       NS_LITERAL_CSTRING("min_visits") + qIndex, visits
     );
     NS_ENSURE_SUCCESS(rv, rv);
   }
   visits = aQuery->MaxVisits();
   if (visits >= 0) {
     rv = statement->BindInt32ByName(
       NS_LITERAL_CSTRING("max_visits") + qIndex, visits
     );
     NS_ENSURE_SUCCESS(rv, rv);
   }
   // domain (see GetReversedHostname for more info on reversed host names)
   if (NS_SUCCEEDED(aQuery->GetHasDomain(&hasIt)) && hasIt) {
     nsString revDomain;
     GetReversedHostname(NS_ConvertUTF8toUTF16(aQuery->Domain()), revDomain);
     if (aQuery->DomainIsHost()) {
       rv = statement->BindStringByName(
         NS_LITERAL_CSTRING("domain_lower") + qIndex, revDomain
       );
       NS_ENSURE_SUCCESS(rv, rv);
     } else {
       // for "mozilla.org" do query >= "gro.allizom." AND < "gro.allizom/"
       // which will get everything starting with "gro.allizom." while using the
       // index (using SUBSTRING() causes indexes to be discarded).
       NS_ASSERTION(revDomain[revDomain.Length() - 1] == '.', "Invalid rev. host");
       rv = statement->BindStringByName(
         NS_LITERAL_CSTRING("domain_lower") + qIndex, revDomain
       );
       NS_ENSURE_SUCCESS(rv, rv);
       revDomain.Truncate(revDomain.Length() - 1);
       revDomain.Append(char16_t('/'));
       rv = statement->BindStringByName(
         NS_LITERAL_CSTRING("domain_upper") + qIndex, revDomain
       );
       NS_ENSURE_SUCCESS(rv, rv);
     }
   }
   // URI
   if (aQuery->Uri()) {
     rv = URIBinder::Bind(
       statement, NS_LITERAL_CSTRING("uri") + qIndex, aQuery->Uri()
     );
     NS_ENSURE_SUCCESS(rv, rv);
     if (aQuery->UriIsPrefix()) {
       nsAutoCString uriString;
       aQuery->Uri()->GetSpec(uriString);
       uriString.Append(char(0x7F)); // MAX_UTF8
       rv = URIBinder::Bind(
         statement, NS_LITERAL_CSTRING("uri_upper") + qIndex, uriString
       );
       NS_ENSURE_SUCCESS(rv, rv);
     }
   }
   // annotation
   if (!aQuery->Annotation().IsEmpty()) {
     rv = statement->BindUTF8StringByName(
       NS_LITERAL_CSTRING("anno") + qIndex, aQuery->Annotation()
     );
     NS_ENSURE_SUCCESS(rv, rv);
   }
   // tags
   const nsTArray<nsString> &tags = aQuery->Tags();
   if (tags.Length() > 0) {
     for (uint32_t i = 0; i < tags.Length(); ++i) {
       nsPrintfCString paramName("tag%d_", i);
       NS_ConvertUTF16toUTF8 tag(tags[i]);
       rv = statement->BindUTF8StringByName(paramName + qIndex, tag);
       NS_ENSURE_SUCCESS(rv, rv);
     }
     int64_t tagsFolder = GetTagsFolder();
     rv = statement->BindInt64ByName(
       NS_LITERAL_CSTRING("tags_folder") + qIndex, tagsFolder
     );
     NS_ENSURE_SUCCESS(rv, rv);
     if (!aQuery->TagsAreNot()) {
       rv = statement->BindInt32ByName(
         NS_LITERAL_CSTRING("tag_count") + qIndex, tags.Length()
       );
       NS_ENSURE_SUCCESS(rv, rv);
     }
   }
   // transitions
   const nsTArray<uint32_t>& transitions = aQuery->Transitions();
   if (transitions.Length() > 0) {
     for (uint32_t i = 0; i < transitions.Length(); ++i) {
       nsPrintfCString paramName("transition%d_", i);
       rv = statement->BindInt64ByName(paramName + qIndex, transitions[i]);
       NS_ENSURE_SUCCESS(rv, rv);
     }
   }
   return NS_OK;
 }
 // nsNavHistory::ResultsAsList
 //
 nsresult
 nsNavHistory::ResultsAsList(mozIStorageStatement* statement,
                             nsNavHistoryQueryOptions* aOptions,
                             nsCOMArray<nsNavHistoryResultNode>* aResults)
 {
   nsresult rv;
   nsCOMPtr<mozIStorageValueArray> row = do_QueryInterface(statement, &rv);
   NS_ENSURE_SUCCESS(rv, rv);
   bool hasMore = false;
   while (NS_SUCCEEDED(statement->ExecuteStep(&hasMore)) && hasMore) {
     nsRefPtr<nsNavHistoryResultNode> result;
     rv = RowToResult(row, aOptions, getter_AddRefs(result));
     NS_ENSURE_SUCCESS(rv, rv);
     aResults->AppendObject(result);
   }
   return NS_OK;
 }
 const int64_t UNDEFINED_URN_VALUE = -1;
 // Create a urn (like
 // urn:places-persist:place:group=0&group=1&sort=1&type=1,,%28local%20files%29)
 // to be used to persist the open state of this container in localstore.rdf
 nsresult
 CreatePlacesPersistURN(nsNavHistoryQueryResultNode *aResultNode,
                        int64_t aValue, const nsCString& aTitle, nsCString& aURN)
 {
   nsAutoCString uri;
   nsresult rv = aResultNode->GetUri(uri);
   NS_ENSURE_SUCCESS(rv, rv);
   aURN.Assign(NS_LITERAL_CSTRING("urn:places-persist:"));
   aURN.Append(uri);
   aURN.Append(NS_LITERAL_CSTRING(","));
   if (aValue != UNDEFINED_URN_VALUE)
     aURN.AppendInt(aValue);
   aURN.Append(NS_LITERAL_CSTRING(","));
   if (!aTitle.IsEmpty()) {
     nsAutoCString escapedTitle;
     bool success = NS_Escape(aTitle, escapedTitle, url_XAlphas);
     NS_ENSURE_TRUE(success, NS_ERROR_OUT_OF_MEMORY);
     aURN.Append(escapedTitle);
   }
   return NS_OK;
 }
 int64_t
 nsNavHistory::GetTagsFolder()
 {
   // cache our tags folder
   // note, we can't do this in nsNavHistory::Init(),
   // as getting the bookmarks service would initialize it.
   if (mTagsFolder == -1) {
     nsNavBookmarks *bookmarks = nsNavBookmarks::GetBookmarksService();
     NS_ENSURE_TRUE(bookmarks, -1);
     nsresult rv = bookmarks->GetTagsFolder(&mTagsFolder);
     NS_ENSURE_SUCCESS(rv, -1);
   }
   return mTagsFolder;
 }
 // nsNavHistory::FilterResultSet
 //
 // This does some post-query-execution filtering:
 //   - searching on title, url and tags
 //   - limit count
 //
 // Note:  changes to filtering in FilterResultSet()
 // may require changes to NeedToFilterResultSet()
 nsresult
 nsNavHistory::FilterResultSet(nsNavHistoryQueryResultNode* aQueryNode,
                               const nsCOMArray<nsNavHistoryResultNode>& aSet,
                               nsCOMArray<nsNavHistoryResultNode>* aFiltered,
                               const nsCOMArray<nsNavHistoryQuery>& aQueries,
                               nsNavHistoryQueryOptions *aOptions)
 {
   // get the bookmarks service
   nsNavBookmarks *bookmarks = nsNavBookmarks::GetBookmarksService();
   NS_ENSURE_TRUE(bookmarks, NS_ERROR_OUT_OF_MEMORY);
   // parse the search terms
   nsTArray<nsTArray<nsString>*> terms;
   ParseSearchTermsFromQueries(aQueries, &terms);
   uint16_t resultType = aOptions->ResultType();
   for (int32_t nodeIndex = 0; nodeIndex < aSet.Count(); nodeIndex++) {
     // exclude-queries is implicit when searching, we're only looking at
     // plan URI nodes
     if (!aSet[nodeIndex]->IsURI())
       continue;
     // RESULTS_AS_TAG_CONTENTS returns a set ordered by place_id and
     // lastModified. So, to remove duplicates, we can retain the first result
     // for each uri.
     if (resultType == nsINavHistoryQueryOptions::RESULTS_AS_TAG_CONTENTS &&
         nodeIndex > 0 && aSet[nodeIndex]->mURI == aSet[nodeIndex-1]->mURI)
       continue;
     if (aSet[nodeIndex]->mItemId != -1 && aQueryNode &&
         aQueryNode->mItemId == aSet[nodeIndex]->mItemId) {
       continue;
     }
     // Append the node only if it matches one of the queries.
     bool appendNode = false;
     for (int32_t queryIndex = 0;
          queryIndex < aQueries.Count() && !appendNode; queryIndex++) {
       if (terms[queryIndex]->Length()) {
         // Filter based on search terms.
         // Convert title and url for the current node to UTF16 strings.
         NS_ConvertUTF8toUTF16 nodeTitle(aSet[nodeIndex]->mTitle);
         // Unescape the URL for search terms matching.
         nsAutoCString cNodeURL(aSet[nodeIndex]->mURI);
         NS_ConvertUTF8toUTF16 nodeURL(NS_UnescapeURL(cNodeURL));
         // Determine if every search term matches anywhere in the title, url or
         // tag.
         bool matchAll = true;
         for (int32_t termIndex = terms[queryIndex]->Length() - 1;
              termIndex >= 0 && matchAll;
              termIndex--) {
           nsString& term = terms[queryIndex]->ElementAt(termIndex);
           // True if any of them match; false makes us quit the loop
           matchAll = CaseInsensitiveFindInReadable(term, nodeTitle) ||
                      CaseInsensitiveFindInReadable(term, nodeURL) ||
                      CaseInsensitiveFindInReadable(term, aSet[nodeIndex]->mTags);
         }
         // Skip the node if we don't match all terms in the title, url or tag
         if (!matchAll)
           continue;
       }
       // We passed all filters, so we can append the node to filtered results.
       appendNode = true;
     }
     if (appendNode)
       aFiltered->AppendObject(aSet[nodeIndex]);
     // Stop once we have reached max results.
     if (aOptions->MaxResults() > 0 &&
         (uint32_t)aFiltered->Count() >= aOptions->MaxResults())
       break;
   }
   // De-allocate the temporary matrixes.
   for (int32_t i = 0; i < aQueries.Count(); i++) {
     delete terms[i];
   }
   return NS_OK;
 }
 void
 nsNavHistory::registerEmbedVisit(nsIURI* aURI,
                                  int64_t aTime)
 {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   VisitHashKey* visit = mEmbedVisits.PutEntry(aURI);
   if (!visit) {
     NS_WARNING("Unable to register a EMBED visit.");
     return;
   }
   visit->visitTime = aTime;
 }
 bool
 nsNavHistory::hasEmbedVisit(nsIURI* aURI) {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   return !!mEmbedVisits.GetEntry(aURI);
 }
 void
 nsNavHistory::clearEmbedVisits() {
   NS_ASSERTION(NS_IsMainThread(), "This can only be called on the main thread");
   mEmbedVisits.Clear();
 }
 // nsNavHistory::CheckIsRecentEvent
 //
 //    Sees if this URL happened "recently."
 //
 //    It is always removed from our recent list no matter what. It only counts
 //    as "recent" if the event happened more recently than our event
 //    threshold ago.
 bool
 nsNavHistory::CheckIsRecentEvent(RecentEventHash* hashTable,
                                  const nsACString& url)
 {
   PRTime eventTime;
   if (hashTable->Get(url, reinterpret_cast<int64_t*>(&eventTime))) {
     hashTable->Remove(url);
     if (eventTime > GetNow() - RECENT_EVENT_THRESHOLD)
       return true;
     return false;
   }
   return false;
 }
 // nsNavHistory::ExpireNonrecentEvents
 //
 //    This goes through our
 static PLDHashOperator
 ExpireNonrecentEventsCallback(nsCStringHashKey::KeyType aKey,
                               int64_t& aData,
                               void* userArg)
 {
   int64_t* threshold = reinterpret_cast<int64_t*>(userArg);
   if (aData < *threshold)
     return PL_DHASH_REMOVE;
   return PL_DHASH_NEXT;
 }
 void
 nsNavHistory::ExpireNonrecentEvents(RecentEventHash* hashTable)
 {
   int64_t threshold = GetNow() - RECENT_EVENT_THRESHOLD;
   hashTable->Enumerate(ExpireNonrecentEventsCallback,
                        reinterpret_cast<void*>(&threshold));
 }
 // nsNavHistory::RowToResult
 //
 //    Here, we just have a generic row. It could be a query, URL, visit,
 //    or full visit.
 nsresult
 nsNavHistory::RowToResult(mozIStorageValueArray* aRow,
                           nsNavHistoryQueryOptions* aOptions,
                           nsNavHistoryResultNode** aResult)
 {
   NS_ASSERTION(aRow && aOptions && aResult, "Null pointer in RowToResult");
   // URL
   nsAutoCString url;
   nsresult rv = aRow->GetUTF8String(kGetInfoIndex_URL, url);
   NS_ENSURE_SUCCESS(rv, rv);
   // title
   nsAutoCString title;
   rv = aRow->GetUTF8String(kGetInfoIndex_Title, title);
   NS_ENSURE_SUCCESS(rv, rv);
   uint32_t accessCount = aRow->AsInt32(kGetInfoIndex_VisitCount);
   PRTime time = aRow->AsInt64(kGetInfoIndex_VisitDate);
   // favicon
   nsAutoCString favicon;
   rv = aRow->GetUTF8String(kGetInfoIndex_FaviconURL, favicon);
   NS_ENSURE_SUCCESS(rv, rv);
   // itemId
   int64_t itemId = aRow->AsInt64(kGetInfoIndex_ItemId);
   int64_t parentId = -1;
   if (itemId == 0) {
     // This is not a bookmark.  For non-bookmarks we use a -1 itemId value.
     // Notice ids in sqlite tables start from 1, so itemId cannot ever be 0.
     itemId = -1;
   }
   else {
     // This is a bookmark, so it has a parent.
     int64_t itemParentId = aRow->AsInt64(kGetInfoIndex_ItemParentId);
     if (itemParentId > 0) {
       // The Places root has parent == 0, but that item id does not really
       // exist. We want to set the parent only if it's a real one.
       parentId = itemParentId;
     }
   }
   if (IsQueryURI(url)) {
     // special case "place:" URIs: turn them into containers
     // We should never expose the history title for query nodes if the
     // bookmark-item's title is set to null (the history title may be the
     // query string without the place: prefix). Thus we call getItemTitle
     // explicitly. Doing this in the SQL query would be less performant since
     // it should be done for all results rather than only for queries.
     if (itemId != -1) {
       nsNavBookmarks *bookmarks = nsNavBookmarks::GetBookmarksService();
       NS_ENSURE_TRUE(bookmarks, NS_ERROR_OUT_OF_MEMORY);
       rv = bookmarks->GetItemTitle(itemId, title);
       NS_ENSURE_SUCCESS(rv, rv);
     }
     nsRefPtr<nsNavHistoryResultNode> resultNode;
     rv = QueryRowToResult(itemId, url, title, accessCount, time, favicon,
                           getter_AddRefs(resultNode));
     NS_ENSURE_SUCCESS(rv,rv);
     if (aOptions->ResultType() == nsNavHistoryQueryOptions::RESULTS_AS_TAG_QUERY) {
       // RESULTS_AS_TAG_QUERY has date columns
       resultNode->mDateAdded = aRow->AsInt64(kGetInfoIndex_ItemDateAdded);
       resultNode->mLastModified = aRow->AsInt64(kGetInfoIndex_ItemLastModified);
     }
     else if (resultNode->IsFolder()) {
       // If it's a simple folder node (i.e. a shortcut to another folder), apply
       // our options for it. However, if the parent type was tag query, we do not
       // apply them, because it would not yield any results.
       resultNode->GetAsContainer()->mOptions = aOptions;
     }
     resultNode.forget(aResult);
     return rv;
   } else if (aOptions->ResultType() == nsNavHistoryQueryOptions::RESULTS_AS_URI ||
              aOptions->ResultType() == nsNavHistoryQueryOptions::RESULTS_AS_TAG_CONTENTS) {
     nsRefPtr<nsNavHistoryResultNode> resultNode =
       new nsNavHistoryResultNode(url, title, accessCount, time, favicon);
     if (itemId != -1) {
       resultNode->mItemId = itemId;
       resultNode->mFolderId = parentId;
       resultNode->mDateAdded = aRow->AsInt64(kGetInfoIndex_ItemDateAdded);
       resultNode->mLastModified = aRow->AsInt64(kGetInfoIndex_ItemLastModified);
     }
     resultNode->mFrecency = aRow->AsInt32(kGetInfoIndex_Frecency);
     resultNode->mHidden = !!aRow->AsInt32(kGetInfoIndex_Hidden);
     nsAutoString tags;
     rv = aRow->GetString(kGetInfoIndex_ItemTags, tags);
     NS_ENSURE_SUCCESS(rv, rv);
     if (!tags.IsVoid()) {
       resultNode->mTags.Assign(tags);
     }
     rv = aRow->GetUTF8String(kGetInfoIndex_Guid, resultNode->mPageGuid);
     NS_ENSURE_SUCCESS(rv, rv);
     resultNode.forget(aResult);
     return NS_OK;
   }
   if (aOptions->ResultType() == nsNavHistoryQueryOptions::RESULTS_AS_VISIT) {
     nsRefPtr<nsNavHistoryResultNode> resultNode =
       new nsNavHistoryResultNode(url, title, accessCount, time, favicon);
     nsAutoString tags;
     rv = aRow->GetString(kGetInfoIndex_ItemTags, tags);
     if (!tags.IsVoid())
       resultNode->mTags.Assign(tags);
     rv = aRow->GetUTF8String(kGetInfoIndex_Guid, resultNode->mPageGuid);
     NS_ENSURE_SUCCESS(rv, rv);
     resultNode.forget(aResult);
     return NS_OK;
   }
   return NS_ERROR_FAILURE;
 }
 // nsNavHistory::QueryRowToResult
 //
 //    Called by RowToResult when the URI is a place: URI to generate the proper
 //    folder or query node.
 nsresult
 nsNavHistory::QueryRowToResult(int64_t itemId, const nsACString& aURI,
                                const nsACString& aTitle,
                                uint32_t aAccessCount, PRTime aTime,
                                const nsACString& aFavicon,
                                nsNavHistoryResultNode** aNode)
 {
   nsCOMArray<nsNavHistoryQuery> queries;
   nsCOMPtr<nsNavHistoryQueryOptions> options;
   nsresult rv = QueryStringToQueryArray(aURI, &queries,
                                         getter_AddRefs(options));
   nsRefPtr<nsNavHistoryResultNode> resultNode;
   // If this failed the query does not parse correctly, let the error pass and
   // handle it later.
   if (NS_SUCCEEDED(rv)) {
     // Check if this is a folder shortcut, so we can take a faster path.
     int64_t folderId = GetSimpleBookmarksQueryFolder(queries, options);
     if (folderId) {
       nsNavBookmarks *bookmarks = nsNavBookmarks::GetBookmarksService();
       NS_ENSURE_TRUE(bookmarks, NS_ERROR_OUT_OF_MEMORY);
       rv = bookmarks->ResultNodeForContainer(folderId, options,
                                              getter_AddRefs(resultNode));
       // If this failed the shortcut is pointing to nowhere, let the error pass
       // and handle it later.
       if (NS_SUCCEEDED(rv)) {
         // This is the query itemId, and is what is exposed by node.itemId.
         resultNode->GetAsFolder()->mQueryItemId = itemId;
         // Use the query item title, unless it's void (in that case use the
         // concrete folder title).
         if (!aTitle.IsVoid()) {
           resultNode->mTitle = aTitle;
         }
       }
     }
     else {
       // This is a regular query.
       resultNode = new nsNavHistoryQueryResultNode(aTitle, EmptyCString(),
                                                    aTime, queries, options);
       resultNode->mItemId = itemId;
     }
   }
   if (NS_FAILED(rv)) {
     NS_WARNING("Generating a generic empty node for a broken query!");
     // This is a broken query, that either did not parse or points to not
     // existing data.  We don't want to return failure since that will kill the
     // whole result.  Instead make a generic empty query node.
     resultNode = new nsNavHistoryQueryResultNode(aTitle, aFavicon, aURI);
     resultNode->mItemId = itemId;
     // This is a perf hack to generate an empty query that skips filtering.
     resultNode->GetAsQuery()->Options()->SetExcludeItems(true);
   }
   resultNode.forget(aNode);
   return NS_OK;
 }
 // nsNavHistory::VisitIdToResultNode
 //
 //    Used by the query results to create new nodes on the fly when
 //    notifications come in. This just creates a node for the given visit ID.
 nsresult
 nsNavHistory::VisitIdToResultNode(int64_t visitId,
                                   nsNavHistoryQueryOptions* aOptions,
                                   nsNavHistoryResultNode** aResult)
 {
   nsAutoCString tagsFragment;
   GetTagsSqlFragment(GetTagsFolder(), NS_LITERAL_CSTRING("h.id"),
                      true, tagsFragment);
   nsCOMPtr<mozIStorageStatement> statement;
   switch (aOptions->ResultType())
   {
     case nsNavHistoryQueryOptions::RESULTS_AS_VISIT:
     case nsNavHistoryQueryOptions::RESULTS_AS_FULL_VISIT:
       // visit query - want exact visit time
       // Should match kGetInfoIndex_* (see GetQueryResults)
       statement = mDB->GetStatement(NS_LITERAL_CSTRING(
         "SELECT h.id, h.url, h.title, h.rev_host, h.visit_count, "
                "v.visit_date, f.url, null, null, null, null, "
                ) + tagsFragment + NS_LITERAL_CSTRING(", h.frecency, h.hidden, h.guid "
         "FROM moz_places h "
         "JOIN moz_historyvisits v ON h.id = v.place_id "
         "LEFT JOIN moz_favicons f ON h.favicon_id = f.id "
         "WHERE v.id = :visit_id ")
       );
       break;
     case nsNavHistoryQueryOptions::RESULTS_AS_URI:
       // URL results - want last visit time
       // Should match kGetInfoIndex_* (see GetQueryResults)
       statement = mDB->GetStatement(NS_LITERAL_CSTRING(
         "SELECT h.id, h.url, h.title, h.rev_host, h.visit_count, "
                "h.last_visit_date, f.url, null, null, null, null, "
                ) + tagsFragment + NS_LITERAL_CSTRING(", h.frecency, h.hidden, h.guid "
         "FROM moz_places h "
         "JOIN moz_historyvisits v ON h.id = v.place_id "
         "LEFT JOIN moz_favicons f ON h.favicon_id = f.id "
         "WHERE v.id = :visit_id ")
       );
       break;
     default:
       // Query base types like RESULTS_AS_*_QUERY handle additions
       // by registering their own observers when they are expanded.
       return NS_OK;
   }
   NS_ENSURE_STATE(statement);
   mozStorageStatementScoper scoper(statement);
   nsresult rv = statement->BindInt64ByName(NS_LITERAL_CSTRING("visit_id"),
                                            visitId);
   NS_ENSURE_SUCCESS(rv, rv);
   bool hasMore = false;
   rv = statement->ExecuteStep(&hasMore);
   NS_ENSURE_SUCCESS(rv, rv);
   if (! hasMore) {
     NS_NOTREACHED("Trying to get a result node for an invalid visit");
     return NS_ERROR_INVALID_ARG;
   }
   nsCOMPtr<mozIStorageValueArray> row = do_QueryInterface(statement, &rv);
   NS_ENSURE_SUCCESS(rv, rv);
   return RowToResult(row, aOptions, aResult);
 }
 nsresult
 nsNavHistory::BookmarkIdToResultNode(int64_t aBookmarkId, nsNavHistoryQueryOptions* aOptions,
                                      nsNavHistoryResultNode** aResult)
 {
   nsAutoCString tagsFragment;
   GetTagsSqlFragment(GetTagsFolder(), NS_LITERAL_CSTRING("h.id"),
                      true, tagsFragment);
   // Should match kGetInfoIndex_*
   nsCOMPtr<mozIStorageStatement> stmt = mDB->GetStatement(NS_LITERAL_CSTRING(
       "SELECT b.fk, h.url, COALESCE(b.title, h.title), "
              "h.rev_host, h.visit_count, h.last_visit_date, f.url, b.id, "
              "b.dateAdded, b.lastModified, b.parent, "
              ) + tagsFragment + NS_LITERAL_CSTRING(", h.frecency, h.hidden, h.guid "
       "FROM moz_bookmarks b "
       "JOIN moz_places h ON b.fk = h.id "
       "LEFT JOIN moz_favicons f ON h.favicon_id = f.id "
       "WHERE b.id = :item_id ")
   );
   NS_ENSURE_STATE(stmt);
   mozStorageStatementScoper scoper(stmt);
   nsresult rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("item_id"),
                                       aBookmarkId);
   NS_ENSURE_SUCCESS(rv, rv);
   bool hasMore = false;
   rv = stmt->ExecuteStep(&hasMore);
   NS_ENSURE_SUCCESS(rv, rv);
   if (!hasMore) {
     NS_NOTREACHED("Trying to get a result node for an invalid bookmark identifier");
     return NS_ERROR_INVALID_ARG;
   }
   nsCOMPtr<mozIStorageValueArray> row = do_QueryInterface(stmt, &rv);
   NS_ENSURE_SUCCESS(rv, rv);
   return RowToResult(row, aOptions, aResult);
 }
 nsresult
 nsNavHistory::URIToResultNode(nsIURI* aURI,
                               nsNavHistoryQueryOptions* aOptions,
                               nsNavHistoryResultNode** aResult)
 {
   nsAutoCString tagsFragment;
   GetTagsSqlFragment(GetTagsFolder(), NS_LITERAL_CSTRING("h.id"),
                      true, tagsFragment);
   // Should match kGetInfoIndex_*
   nsCOMPtr<mozIStorageStatement> stmt = mDB->GetStatement(NS_LITERAL_CSTRING(
     "SELECT h.id, :page_url, h.title, h.rev_host, h.visit_count, "
            "h.last_visit_date, f.url, null, null, null, null, "
            ) + tagsFragment + NS_LITERAL_CSTRING(", h.frecency, h.hidden, h.guid "
     "FROM moz_places h "
     "LEFT JOIN moz_favicons f ON h.favicon_id = f.id "
     "WHERE h.url = :page_url ")
   );
   NS_ENSURE_STATE(stmt);
   mozStorageStatementScoper scoper(stmt);
   nsresult rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("page_url"), aURI);
   NS_ENSURE_SUCCESS(rv, rv);
   bool hasMore = false;
   rv = stmt->ExecuteStep(&hasMore);
   NS_ENSURE_SUCCESS(rv, rv);
   if (!hasMore) {
     NS_NOTREACHED("Trying to get a result node for an invalid url");
     return NS_ERROR_INVALID_ARG;
   }
   nsCOMPtr<mozIStorageValueArray> row = do_QueryInterface(stmt, &rv);
   NS_ENSURE_SUCCESS(rv, rv);
   return RowToResult(row, aOptions, aResult);
 }
 void
 nsNavHistory::SendPageChangedNotification(nsIURI* aURI,
                                           uint32_t aChangedAttribute,
                                           const nsAString& aNewValue,
                                           const nsACString& aGUID)
 {
   MOZ_ASSERT(!aGUID.IsEmpty());
   NOTIFY_OBSERVERS(mCanNotify, mCacheObservers, mObservers,
                    nsINavHistoryObserver,
                    OnPageChanged(aURI, aChangedAttribute, aNewValue, aGUID));
 }
 // nsNavHistory::TitleForDomain
 //
 //    This computes the title for a given domain. Normally, this is just the
 //    domain name, but we specially handle empty cases to give you a nice
 //    localized string.
 void
 nsNavHistory::TitleForDomain(const nsCString& domain, nsACString& aTitle)
 {
   if (! domain.IsEmpty()) {
     aTitle = domain;
     return;
   }
   // use the localized one instead
   GetStringFromName(MOZ_UTF16("localhost"), aTitle);
 }
 void
 nsNavHistory::GetAgeInDaysString(int32_t aInt, const char16_t *aName,
                                  nsACString& aResult)
 {
   nsIStringBundle *bundle = GetBundle();
   if (bundle) {
     nsAutoString intString;
     intString.AppendInt(aInt);
     const char16_t* strings[1] = { intString.get() };
     nsXPIDLString value;
     nsresult rv = bundle->FormatStringFromName(aName, strings,
 , getter_Copies(value));
     if (NS_SUCCEEDED(rv)) {
       CopyUTF16toUTF8(value, aResult);
       return;
     }
   }
   CopyUTF16toUTF8(nsDependentString(aName), aResult);
 }
 void
 nsNavHistory::GetStringFromName(const char16_t *aName, nsACString& aResult)
 {
   nsIStringBundle *bundle = GetBundle();
   if (bundle) {
     nsXPIDLString value;
     nsresult rv = bundle->GetStringFromName(aName, getter_Copies(value));
     if (NS_SUCCEEDED(rv)) {
       CopyUTF16toUTF8(value, aResult);
       return;
     }
   }
   CopyUTF16toUTF8(nsDependentString(aName), aResult);
 }
 void
 nsNavHistory::GetMonthName(int32_t aIndex, nsACString& aResult)
 {
   nsIStringBundle *bundle = GetDateFormatBundle();
   if (bundle) {
     nsCString name = nsPrintfCString("month.%d.name", aIndex);
     nsXPIDLString value;
     nsresult rv = bundle->GetStringFromName(NS_ConvertUTF8toUTF16(name).get(),
                                             getter_Copies(value));
     if (NS_SUCCEEDED(rv)) {
       CopyUTF16toUTF8(value, aResult);
       return;
     }
   }
   aResult = nsPrintfCString("[%d]", aIndex);
 }
 void
 nsNavHistory::GetMonthYear(int32_t aMonth, int32_t aYear, nsACString& aResult)
 {
   nsIStringBundle *bundle = GetBundle();
   if (bundle) {
     nsAutoCString monthName;
     GetMonthName(aMonth, monthName);
     nsAutoString yearString;
     yearString.AppendInt(aYear);
     const char16_t* strings[2] = {
       NS_ConvertUTF8toUTF16(monthName).get()
     , yearString.get()
     };
     nsXPIDLString value;
     if (NS_SUCCEEDED(bundle->FormatStringFromName(
           MOZ_UTF16("finduri-MonthYear"), strings, 2,
           getter_Copies(value)
         ))) {
       CopyUTF16toUTF8(value, aResult);
       return;
     }
   }
   aResult.AppendLiteral("finduri-MonthYear");
 }
 namespace {
 // GetSimpleBookmarksQueryFolder
 //
 //    Determines if this set of queries is a simple bookmarks query for a
 //    folder with no other constraints. In these common cases, we can more
 //    efficiently compute the results.
 //
 //    A simple bookmarks query will result in a hierarchical tree of
 //    bookmark items, folders and separators.
 //
 //    Returns the folder ID if it is a simple folder query, 0 if not.
 static int64_t
 GetSimpleBookmarksQueryFolder(const nsCOMArray<nsNavHistoryQuery>& aQueries,
                               nsNavHistoryQueryOptions* aOptions)
 {
   if (aQueries.Count() != 1)
     return 0;
   nsNavHistoryQuery* query = aQueries[0];
   if (query->Folders().Length() != 1)
     return 0;
   bool hasIt;
   query->GetHasBeginTime(&hasIt);
   if (hasIt)
     return 0;
   query->GetHasEndTime(&hasIt);
   if (hasIt)
     return 0;
   query->GetHasDomain(&hasIt);
   if (hasIt)
     return 0;
   query->GetHasUri(&hasIt);
   if (hasIt)
     return 0;
   (void)query->GetHasSearchTerms(&hasIt);
   if (hasIt)
     return 0;
   if (query->Tags().Length() > 0)
     return 0;
   if (aOptions->MaxResults() > 0)
     return 0;
   // RESULTS_AS_TAG_CONTENTS is quite similar to a folder shortcut, but it must
   // not be treated like that, since it needs all query options.
   if(aOptions->ResultType() == nsINavHistoryQueryOptions::RESULTS_AS_TAG_CONTENTS)
     return 0;
   // Don't care about onlyBookmarked flag, since specifying a bookmark
   // folder is inferring onlyBookmarked.
   return query->Folders()[0];
 }
 // ParseSearchTermsFromQueries
 //
 //    Construct a matrix of search terms from the given queries array.
 //    All of the query objects are ORed together. Within a query, all the terms
 //    are ANDed together. See nsINavHistoryService.idl.
 //
 //    This just breaks the query up into words. We don't do anything fancy,
 //    not even quoting. We do, however, strip quotes, because people might
 //    try to input quotes expecting them to do something and get no results
 //    back.
 inline bool isQueryWhitespace(char16_t ch)
 {
   return ch == ' ';
 }
 void ParseSearchTermsFromQueries(const nsCOMArray<nsNavHistoryQuery>& aQueries,
                                  nsTArray<nsTArray<nsString>*>* aTerms)
 {
   int32_t lastBegin = -1;
   for (int32_t i = 0; i < aQueries.Count(); i++) {
     nsTArray<nsString> *queryTerms = new nsTArray<nsString>();
     bool hasSearchTerms;
     if (NS_SUCCEEDED(aQueries[i]->GetHasSearchTerms(&hasSearchTerms)) &&
         hasSearchTerms) {
       const nsString& searchTerms = aQueries[i]->SearchTerms();
       for (uint32_t j = 0; j < searchTerms.Length(); j++) {
         if (isQueryWhitespace(searchTerms[j]) ||
             searchTerms[j] == '"') {
           if (lastBegin >= 0) {
             // found the end of a word
             queryTerms->AppendElement(Substring(searchTerms, lastBegin,
                                                j - lastBegin));
             lastBegin = -1;
           }
         } else {
           if (lastBegin < 0) {
             // found the beginning of a word
             lastBegin = j;
           }
         }
       }
       // last word
       if (lastBegin >= 0)
         queryTerms->AppendElement(Substring(searchTerms, lastBegin));
     }
     aTerms->AppendElement(queryTerms);
   }
 }
 } // anonymous namespace
 nsresult
 nsNavHistory::UpdateFrecency(int64_t aPlaceId)
 {
   nsCOMPtr<mozIStorageAsyncStatement> updateFrecencyStmt = mDB->GetAsyncStatement(
     "UPDATE moz_places "
     "SET frecency = NOTIFY_FRECENCY("
       "CALCULATE_FRECENCY(:page_id), url, guid, hidden, last_visit_date"
     ") "
     "WHERE id = :page_id"
   );
   NS_ENSURE_STATE(updateFrecencyStmt);
   nsresult rv = updateFrecencyStmt->BindInt64ByName(NS_LITERAL_CSTRING("page_id"),
                                                     aPlaceId);
   NS_ENSURE_SUCCESS(rv, rv);
   nsCOMPtr<mozIStorageAsyncStatement> updateHiddenStmt = mDB->GetAsyncStatement(
     "UPDATE moz_places "
     "SET hidden = 0 "
     "WHERE id = :page_id AND frecency <> 0"
   );
   NS_ENSURE_STATE(updateHiddenStmt);
   rv = updateHiddenStmt->BindInt64ByName(NS_LITERAL_CSTRING("page_id"),
                                          aPlaceId);
   NS_ENSURE_SUCCESS(rv, rv);
   mozIStorageBaseStatement *stmts[] = {
     updateFrecencyStmt.get()
   , updateHiddenStmt.get()
   };
   nsRefPtr<AsyncStatementCallbackNotifier> cb =
     new AsyncStatementCallbackNotifier(TOPIC_FRECENCY_UPDATED);
   nsCOMPtr<mozIStoragePendingStatement> ps;
   rv = mDB->MainConn()->ExecuteAsync(stmts, ArrayLength(stmts), cb,
                                      getter_AddRefs(ps));
   NS_ENSURE_SUCCESS(rv, rv);
   return NS_OK;
 }
 namespace {
 class FixInvalidFrecenciesCallback : public AsyncStatementCallbackNotifier
 {
 public:
   FixInvalidFrecenciesCallback()
     : AsyncStatementCallbackNotifier(TOPIC_FRECENCY_UPDATED)
   {
   }
   NS_IMETHOD HandleCompletion(uint16_t aReason)
   {
     nsresult rv = AsyncStatementCallbackNotifier::HandleCompletion(aReason);
     NS_ENSURE_SUCCESS(rv, rv);
     if (aReason == REASON_FINISHED) {
       nsNavHistory *navHistory = nsNavHistory::GetHistoryService();
       NS_ENSURE_STATE(navHistory);
       navHistory->NotifyManyFrecenciesChanged();
     }
     return NS_OK;
   }
 };
 } // anonymous namespace
 nsresult
 nsNavHistory::FixInvalidFrecencies()
 {
   nsCOMPtr<mozIStorageAsyncStatement> stmt = mDB->GetAsyncStatement(
     "UPDATE moz_places "
     "SET frecency = CALCULATE_FRECENCY(id) "
     "WHERE frecency < 0"
   );
   NS_ENSURE_STATE(stmt);
   nsRefPtr<FixInvalidFrecenciesCallback> callback =
     new FixInvalidFrecenciesCallback();
   nsCOMPtr<mozIStoragePendingStatement> ps;
   (void)stmt->ExecuteAsync(callback, getter_AddRefs(ps));
   return NS_OK;
 }
 #ifdef MOZ_XUL
 nsresult
 nsNavHistory::AutoCompleteFeedback(int32_t aIndex,
                                    nsIAutoCompleteController *aController)
 {
   nsCOMPtr<mozIStorageAsyncStatement> stmt = mDB->GetAsyncStatement(
     "INSERT OR REPLACE INTO moz_inputhistory "
     // use_count will asymptotically approach the max of 10.
     "SELECT h.id, IFNULL(i.input, :input_text), IFNULL(i.use_count, 0) * .9 + 1 "
     "FROM moz_places h "
     "LEFT JOIN moz_inputhistory i ON i.place_id = h.id AND i.input = :input_text "
     "WHERE url = :page_url "
   );
   NS_ENSURE_STATE(stmt);
   nsAutoString input;
   nsresult rv = aController->GetSearchString(input);
   NS_ENSURE_SUCCESS(rv, rv);
   rv = stmt->BindStringByName(NS_LITERAL_CSTRING("input_text"), input);
   NS_ENSURE_SUCCESS(rv, rv);
   nsAutoString url;
   rv = aController->GetValueAt(aIndex, url);
   NS_ENSURE_SUCCESS(rv, rv);
   rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("page_url"),
                        NS_ConvertUTF16toUTF8(url));
   NS_ENSURE_SUCCESS(rv, rv);
   // We do the update asynchronously and we do not care about failures.
   nsRefPtr<AsyncStatementCallbackNotifier> callback =
     new AsyncStatementCallbackNotifier(TOPIC_AUTOCOMPLETE_FEEDBACK_UPDATED);
   nsCOMPtr<mozIStoragePendingStatement> canceler;
   rv = stmt->ExecuteAsync(callback, getter_AddRefs(canceler));
   NS_ENSURE_SUCCESS(rv, rv);
   return NS_OK;
 }
 #endif
 nsICollation *
 nsNavHistory::GetCollation()
 {
   if (mCollation)
     return mCollation;
   // locale
   nsCOMPtr<nsILocale> locale;
   nsCOMPtr<nsILocaleService> ls(do_GetService(NS_LOCALESERVICE_CONTRACTID));
   NS_ENSURE_TRUE(ls, nullptr);
   nsresult rv = ls->GetApplicationLocale(getter_AddRefs(locale));
   NS_ENSURE_SUCCESS(rv, nullptr);
   // collation
   nsCOMPtr<nsICollationFactory> cfact =
     do_CreateInstance(NS_COLLATIONFACTORY_CONTRACTID);
   NS_ENSURE_TRUE(cfact, nullptr);
   rv = cfact->CreateCollation(locale, getter_AddRefs(mCollation));
   NS_ENSURE_SUCCESS(rv, nullptr);
   return mCollation;
 }
 nsIStringBundle *
 nsNavHistory::GetBundle()
 {
   if (!mBundle) {
     nsCOMPtr<nsIStringBundleService> bundleService =
       services::GetStringBundleService();
     NS_ENSURE_TRUE(bundleService, nullptr);
     nsresult rv = bundleService->CreateBundle(
         "chrome://places/locale/places.properties",
         getter_AddRefs(mBundle));
     NS_ENSURE_SUCCESS(rv, nullptr);
   }
   return mBundle;
 }
 nsIStringBundle *
 nsNavHistory::GetDateFormatBundle()
 {
   if (!mDateFormatBundle) {
     nsCOMPtr<nsIStringBundleService> bundleService =
       services::GetStringBundleService();
     NS_ENSURE_TRUE(bundleService, nullptr);
     nsresult rv = bundleService->CreateBundle(
         "chrome://global/locale/dateFormat.properties",
         getter_AddRefs(mDateFormatBundle));
     NS_ENSURE_SUCCESS(rv, nullptr);
   }
   return mDateFormatBundle;
 }

The Tor Browser / annotate

toolkit/components/places/nsNavHistory.cpp@129ffea94266 (annotated)

toolkit/components/places/nsNavHistory.cpp