Caldavsync Sources / file revision

 /**

  * Copyright (c) 2012-2013, Gerald Garcia, David Wiesner, Timo Berger

  * 

  * This file is part of Andoid Caldav Sync Adapter Free.

  *

  * Andoid Caldav Sync Adapter Free is free software: you can redistribute 

  * it and/or modify it under the terms of the GNU General Public License 

  * as published by the Free Software Foundation, either version 3 of the 

  * License, or at your option any later version.

  *

  * Andoid Caldav Sync Adapter Free is distributed in the hope that 

  * it will be useful, but WITHOUT ANY WARRANTY; without even the implied 

  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with Andoid Caldav Sync Adapter Free.  

  * If not, see <http://www.gnu.org/licenses/>.

  * 

  */

 package org.gege.caldavsyncadapter.syncadapter;

 import java.io.IOException;

 import java.net.URI;

 //import java.net.MalformedURLException;

 import java.net.URISyntaxException;

 import java.util.ArrayList;

 //import java.security.GeneralSecurityException;

 import javax.xml.parsers.ParserConfigurationException;

 import net.fortuna.ical4j.data.ParserException;

 import org.apache.http.ParseException;

 import org.apache.http.client.ClientProtocolException;

 import org.gege.caldavsyncadapter.Event;

 import org.gege.caldavsyncadapter.android.entities.AndroidEvent;

 import org.gege.caldavsyncadapter.authenticator.AuthenticatorActivity;

 import org.gege.caldavsyncadapter.caldav.CaldavFacade;

 import org.gege.caldavsyncadapter.caldav.CaldavProtocolException;

 import org.gege.caldavsyncadapter.caldav.entities.DavCalendar;

 import org.gege.caldavsyncadapter.caldav.entities.CalendarEvent;

 import org.gege.caldavsyncadapter.caldav.entities.CalendarList;

 import org.gege.caldavsyncadapter.caldav.entities.DavCalendar.CalendarSource;

 import org.gege.caldavsyncadapter.syncadapter.notifications.NotificationsHelper;

 import org.xml.sax.SAXException;

 import android.accounts.Account;

 import android.accounts.AccountManager;

 import android.content.AbstractThreadedSyncAdapter;

 import android.content.ContentProviderClient;

 import android.content.ContentUris;

 import android.content.ContentValues;

 import android.content.Context;

 import android.content.SyncResult;

 import android.content.SyncStats;

 import android.content.pm.PackageManager.NameNotFoundException;

 import android.database.Cursor;

 import android.net.Uri;

 import android.os.Bundle;

 import android.os.RemoteException;

 import android.provider.CalendarContract.Attendees;

 import android.provider.CalendarContract.Calendars;

 import android.provider.CalendarContract.Events;

 import android.provider.CalendarContract.Reminders;

 import android.util.Log;

 public class SyncAdapter extends AbstractThreadedSyncAdapter {

 	private static final String TAG = "SyncAdapter";

 	private AccountManager mAccountManager;

 	private String mVersion = "";

 	private int mCountPerformSync = 0;

 	private int mCountSyncCanceled = 0;

 	private int mCountProviderFailed = 0;

 	private int mCountProviderFailedMax = 3;

 //	private Context mContext;

 /*	private static final String[] CALENDAR_PROJECTION = new String[] {

 	    Calendars._ID,                           // 0

 	    Calendars.ACCOUNT_NAME,                  // 1

 	    Calendars.CALENDAR_DISPLAY_NAME,         // 2

 	    Calendars.OWNER_ACCOUNT,                 // 3

 	    Calendar.CTAG                            // 4

 	};*/

 /*	// The indices for the projection array above.

 	private static final int PROJECTION_ID_INDEX = 0;

 	private static final int PROJECTION_ACCOUNT_NAME_INDEX = 1;

 	private static final int PROJECTION_DISPLAY_NAME_INDEX = 2;

 	private static final int PROJECTION_OWNER_ACCOUNT_INDEX = 3;

 */

 /*

 	private static final String[] EVENT_PROJECTION = new String[] {

 		Events._ID,

 		Events._SYNC_ID,

 		Events.SYNC_DATA1,

 		Events.CALENDAR_ID

 	};

 */

 	// ignore same CTag

 	//private static final boolean FORCE_SYNCHRONIZE = false;

 	// drop all calendar before synchro

 	//private static final boolean DROP_CALENDAR_EVENTS = false;

 	public SyncAdapter(Context context, boolean autoInitialize) {

 		super(context, autoInitialize);

 		//android.os.Debug.waitForDebugger();

 		mAccountManager = AccountManager.get(context);

 		try {

 			mVersion = context.getPackageManager().getPackageInfo(context.getPackageName(), 0).versionName;

 		} catch (NameNotFoundException e) {

 			e.printStackTrace();

 		}

 //		mContext = context;

 	}

 	@Override

 	public void onPerformSync(Account account, Bundle extras, String authority,

 			ContentProviderClient provider, SyncResult syncResult) {

 		boolean bolError = false;

 		String url = mAccountManager.getUserData(account, AuthenticatorActivity.USER_DATA_URL_KEY);

 		this.mCountPerformSync += 1;

 		Log.v(TAG, "onPerformSync() count:" + String.valueOf(this.mCountPerformSync) + " on " + account.name + " with URL " + url);

 		CalendarList serverCalList;

 		CalendarList androidCalList = new CalendarList(account, provider, CalendarSource.Android, url);

 		androidCalList.readCalendarFromClient();

 		ArrayList<Uri> notifyList = new ArrayList<Uri>();

 		try {

  			String Username = "";

 			String UserDataVersion = mAccountManager.getUserData(account, AuthenticatorActivity.USER_DATA_VERSION);

 			if (UserDataVersion == null) {

 				Username = account.name;

 			} else {

 				Username = mAccountManager.getUserData(account, AuthenticatorActivity.USER_DATA_USERNAME);

 			}

 			CaldavFacade facade = new CaldavFacade(Username, mAccountManager.getPassword(account), url);

 			facade.setAccount(account);

 			facade.setProvider(provider);

 			facade.setVersion(mVersion);

 			serverCalList = facade.getCalendarList(this.getContext());

 			//String davProperties = facade.getLastDav();

 			Log.i(TAG, String.valueOf(androidCalList.getCalendarList().size()) + " calendars found at android");

 			for (DavCalendar serverCalendar : serverCalList.getCalendarList()) {

 				Log.i(TAG, "Detected calendar name=" + serverCalendar.getCalendarDisplayName() + " URI=" + serverCalendar.getURI());

 				Uri androidCalendarUri = serverCalendar.checkAndroidCalendarList(androidCalList, this.getContext());

 				// check if the adapter was able to get an existing calendar or create a new one

 				if (androidCalendarUri != null) {

 					// the provider seems to work correct, reset the counter

 					mCountProviderFailed = 0;

 					DavCalendar androidCalendar = androidCalList.getCalendarByAndroidUri(androidCalendarUri);

 					//if ((FORCE_SYNCHRONIZE) || (androidCalendar.getcTag() == null) || (!androidCalendar.getcTag().equals(serverCalendar.getcTag()))) {

 					if ((androidCalendar.getcTag() == null) || (!androidCalendar.getcTag().equals(serverCalendar.getcTag()))) {

 							Log.d(TAG, "CTag has changed, something to synchronise");

 							if (serverCalendar.readCalendarEvents(facade)) {

 								this.synchroniseEvents(androidCalendar, serverCalendar, syncResult.stats, notifyList);

 								Log.d(TAG, "Updating stored CTag");

 								//serverCalendar.updateAndroidCalendar(androidCalendarUri, Calendar.CTAG, serverCalendar.getcTag());

 								androidCalendar.setCTag(serverCalendar.getcTag(), true);

 							} else {

 								Log.d(TAG, "unable to read events from server calendar");

 							}

 					} else {

 						Log.d(TAG, "CTag has not changed, nothing to do");

 						/* this is unnecessary. "SkippedEntries" are:

 						 * Counter for tracking how many entries, either from the server or the local store, 

 						 * were ignored during the sync operation. This could happen if the SyncAdapter detected 

 						 * some unparsable data but decided to skip it and move on rather than failing immediately. 

 						 */

 						/*long CalendarID = ContentUris.parseId(androidCalendarUri);

 						String selection = "(" + Events.CALENDAR_ID + " = ?)";

 						String[] selectionArgs = new String[] {String.valueOf(CalendarID)}; 

 						Cursor countCursor = provider.query(Events.CONTENT_URI, new String[] {"count(*) AS count"},

 					                selection,

 					                selectionArgs,

 					                null);

 				        countCursor.moveToFirst();

 				        int count = countCursor.getInt(0);

 				        syncResult.stats.numSkippedEntries += count;

 				        countCursor.close();*/

 					}

 					this.checkDirtyAndroidEvents(provider, account, androidCalendarUri, facade, serverCalendar.getURI(), syncResult.stats, notifyList);

 				} else {

 					// this happens if the data provider failes to get an existing or create a new calendar

 					mCountProviderFailed += 1;

 					Log.e(TAG, "failed to get an existing or create a new calendar");

 					syncResult.stats.numIoExceptions += 1;

 					if (mCountProviderFailed >= mCountProviderFailedMax) {

 						// see issue #96

 						NotificationsHelper.signalSyncErrors(this.getContext(), "Caldav sync error (provider failed)", "are you using CyanogenMod in Incognito Mode?");

 					} else {

 						NotificationsHelper.signalSyncErrors(this.getContext(), "Caldav sync error (provider failed)", "the provider failed to get an existing or create a new calendar");

 					}

 					bolError = true;

 				}

 			}

 			if (!bolError) {

 				// check whether a calendar is not synced -> delete it at android

 				androidCalList.deleteCalendarOnClientSideOnly(this.getContext());

 			}

 			// notify the ContentResolver

 			for (Uri uri : androidCalList.getNotifyList()) {

 				this.getContext().getContentResolver().notifyChange(uri, null);

 			}

 			for (Uri uri : serverCalList.getNotifyList()) {

 				this.getContext().getContentResolver().notifyChange(uri, null);

 			}

 			for (Uri uri : notifyList) {

 				this.getContext().getContentResolver().notifyChange(uri, null);

 			}

 			//Log.i(TAG,"Statistiks for Calendar: " + serverCalendar.getURI().toString());

 			//Log.i(TAG,"Statistiks for AndroidCalendar: " + androidCalendar.getAndroidCalendarUri().toString());

 			Log.i(TAG,"Entries:                       " + String.valueOf(syncResult.stats.numEntries));

 			Log.i(TAG,"Rows inserted:                 " + String.valueOf(syncResult.stats.numInserts));

 			Log.i(TAG,"Rows updated:                  " + String.valueOf(syncResult.stats.numUpdates));

 			Log.i(TAG,"Rows deleted:                  " + String.valueOf(syncResult.stats.numDeletes));

 			Log.i(TAG,"Rows skipped:                  " + String.valueOf(syncResult.stats.numSkippedEntries));

 			Log.i(TAG,"Io Exceptions:                 " + String.valueOf(syncResult.stats.numIoExceptions));

 			Log.i(TAG,"Parse Exceptions:              " + String.valueOf(syncResult.stats.numParseExceptions));

 			Log.i(TAG,"Auth Exceptions:               " + String.valueOf(syncResult.stats.numAuthExceptions));

 			Log.i(TAG,"Conflict Detected Exceptions:  " + String.valueOf(syncResult.stats.numConflictDetectedExceptions));

 		/*} catch (final AuthenticatorException e) {

             syncResult.stats.numParseExceptions++;

             Log.e(TAG, "AuthenticatorException", e);*/

         /*} catch (final OperationCanceledException e) {

             Log.e(TAG, "OperationCanceledExcetpion", e);*/

         } catch (final IOException e) {

             Log.e(TAG, "IOException", e);

             syncResult.stats.numIoExceptions++;

             NotificationsHelper.signalSyncErrors(this.getContext(), "Caldav sync error (IO)", e.getMessage());

             //NotificationsHelper.getCurrentSyncLog().addException(e);

             /*} catch (final AuthenticationException e) {

             //mAccountManager.invalidateAuthToken(Constants.ACCOUNT_TYPE, authtoken);

             syncResult.stats.numAuthExceptions++;

             Log.e(TAG, "AuthenticationException", e);*/

         } catch (final ParseException e) {

             syncResult.stats.numParseExceptions++;

             Log.e(TAG, "ParseException", e);

             NotificationsHelper.signalSyncErrors(this.getContext(), "Caldav sync error (parsing)", e.getMessage());

             //NotificationsHelper.getCurrentSyncLog().addException(e);

         /*} catch (final JSONException e) {

             syncResult.stats.numParseExceptions++;

             Log.e(TAG, "JSONException", e);*/

 		} catch (Exception e) {

 			Log.e(TAG, "Updating calendar exception " + e.getClass().getName(), e);

             syncResult.stats.numParseExceptions++;

             NotificationsHelper.signalSyncErrors(this.getContext(), "Caldav sync error (general)", e.getMessage());

             //NotificationsHelper.getCurrentSyncLog().addException(e);

 			//throw new RuntimeException(e);

 		}

 	}

 	public void onSyncCanceled () {

 		//TODO: implement SyncCanceled

 		this.mCountSyncCanceled += 1;

 		Log.v(TAG, "onSyncCanceled() count:" + String.valueOf(this.mCountSyncCanceled));

 	}

 	/**

 	 * both calender event and android event have been found.

 	 * server wins always at the moment.

 	 * @param androidCalendar

 	 * @param serverCalendar

 	 * @param stats

 	 * @param notifyList

 	 * @throws ClientProtocolException

 	 * @throws URISyntaxException

 	 * @throws IOException

 	 * @throws ParserConfigurationException

 	 * @throws SAXException

 	 * @throws RemoteException

 	 * @throws CaldavProtocolException

 	 * @throws ParserException

 	 * @see SyncAdapter#updateAndroidEvent(ContentProviderClient, Account, AndroidEvent, CalendarEvent)

 	 * @see SyncAdapter#tagAndroidEvent(ContentProviderClient, Account, AndroidEvent)

 	 * @see SyncAdapter#untagAndroidEvents(ContentProviderClient, Account, Uri)

 	 * @see SyncAdapter#deleteUntaggedEvents(ContentProviderClient, Account, Uri)

 	 */

 	private void synchroniseEvents(

 				DavCalendar androidCalendar, 

 				DavCalendar serverCalendar, 

 				SyncStats stats, 

 				ArrayList<Uri> notifyList

 			) throws ClientProtocolException, URISyntaxException, IOException, ParserConfigurationException, SAXException, RemoteException, CaldavProtocolException, ParserException {

 		/*if (DROP_CALENDAR_EVENTS) {

 			dropAllEvents(account, provider, androidCalendar.getAndroidCalendarUri());

 		}*/

 		int rowInsert = 0;

 		int rowUpdate = 0;

 		int rowTag = 0;

 		int rowDelete = 0;

 		int rowUntag = 0;

 		int rowSkip = 0;

 		for (CalendarEvent calendarEvent : serverCalendar.getCalendarEvents()) {

 			try {

 				AndroidEvent androidEvent = calendarEvent.getAndroidEvent(androidCalendar);

 				Log.i(TAG, "Event " + calendarEvent.getUri().toString()+ " androidUri="+androidEvent);

 				if (androidEvent == null) {

 					/* new android event */

 					if (calendarEvent.createAndroidEvent(androidCalendar)) {

 						rowInsert += 1;

 						androidEvent = calendarEvent.getAndroidEvent(androidCalendar);

 						notifyList.add(androidEvent.getUri());

 					} else {

 						rowSkip += 1;

 					}

 				} else {

 					/* the android exists */

 					String androidETag = androidEvent.getETag();

 					if (androidETag == null)

 						androidETag = "";

 					Log.d(TAG, "Event compare: " + androidETag + " <> " + calendarEvent.getETag().toString());

 					if ((androidEvent.getETag() == null) || (!androidETag.equals(calendarEvent.getETag()))) {

 						/* the android event is getting updated */

 						if (calendarEvent.updateAndroidEvent(androidEvent)) {

 							rowUpdate += 1;

 							notifyList.add(androidEvent.getUri());

 						} else {

 							rowSkip += 1;

 						}

 					}

 				}

 				if (androidEvent != null)

 					//if (androidEvent.tagAndroidEvent())

 					if (androidCalendar.tagAndroidEvent(androidEvent))

 						rowTag += 1;

 			} catch (ParserException ex) {

 				Log.e(TAG, "Parser exception", ex);

 				stats.numParseExceptions++;

 	            NotificationsHelper.signalSyncErrors(getContext(), "Caldav sync error (parsing)", ex.getMessage());

 	            //NotificationsHelper.getCurrentSyncLog().addException(ex);

 			} catch (CaldavProtocolException ex) {

 				Log.e(TAG, "Caldav exception", ex);

 				stats.numParseExceptions++;

 	            NotificationsHelper.signalSyncErrors(getContext(), "Caldav sync error (caldav)", ex.getMessage());

 	            //NotificationsHelper.getCurrentSyncLog().addException(ex);

 			}

 		}

 		rowDelete = androidCalendar.deleteUntaggedEvents();

 		rowUntag = androidCalendar.untagAndroidEvents();

 		/*Log.i(TAG,"Statistiks for Calendar: " + serverCalendar.getURI().toString());

 		Log.i(TAG,"Statistiks for AndroidCalendar: " + androidCalendar.getAndroidCalendarUri().toString());

 		Log.i(TAG,"Rows inserted: " + String.valueOf(rowInsert));

 		Log.i(TAG,"Rows updated:  " + String.valueOf(rowUpdate));

 		Log.i(TAG,"Rows deleted:  " + String.valueOf(rowDelete));

 		Log.i(TAG,"Rows skipped:  " + String.valueOf(rowSkip));*/

 		Log.i(TAG,"Rows tagged:   " + String.valueOf(rowTag));

 		Log.i(TAG,"Rows untagged: " + String.valueOf(rowUntag));

 		stats.numInserts += rowInsert;

 		stats.numUpdates += rowUpdate;

 		stats.numDeletes += rowDelete;

 		stats.numSkippedEntries += rowSkip;

 		stats.numEntries += rowInsert + rowUpdate + rowDelete;

 	}

 	/**

 	 * checks the android events for the dirty flag.

 	 * the flag is set by android when the event has been changed. 

 	 * the dirty flag is removed when an android event has been updated from calendar event

 	 * @param provider

 	 * @param account

 	 * @param calendarUri

 	 * @param facade

 	 * @param caldavCalendarUri

 	 * @param stats

 	 * @param notifyList

 	 * @return count of dirty events

 	 */

 	private int checkDirtyAndroidEvents(

 				ContentProviderClient provider, 

 				Account account, 

 				Uri calendarUri, 

 				CaldavFacade facade, 

 				URI caldavCalendarUri, 

 				SyncStats stats, 

 				ArrayList<Uri> notifyList

 			) {

 		Cursor curEvent = null;

 		Cursor curAttendee = null;

 		Cursor curReminder = null;

 		Long EventID;

 		Long CalendarID;

 		AndroidEvent androidEvent = null;

 		int rowDirty = 0;

 		int rowInsert = 0;

 		int rowUpdate = 0;

 		int rowDelete = 0;

 		try {

 			CalendarID = ContentUris.parseId(calendarUri);

 			String selection = "(" + Events.DIRTY + " = ?) AND (" + Events.CALENDAR_ID + " = ?)";

 			String[] selectionArgs = new String[] {"1", CalendarID.toString()}; 

 			curEvent = provider.query(Events.CONTENT_URI, null, selection, selectionArgs, null);

 			while (curEvent.moveToNext()) {

 				EventID = curEvent.getLong(curEvent.getColumnIndex(Events._ID));

 				Uri returnedUri = ContentUris.withAppendedId(Events.CONTENT_URI, EventID);

 				//androidEvent = new AndroidEvent(account, provider, returnedUri, calendarUri);

 				androidEvent = new AndroidEvent(returnedUri, calendarUri);

 				androidEvent.readContentValues(curEvent);

 				selection = "(" + Attendees.EVENT_ID + " = ?)";

 				selectionArgs = new String[] {String.valueOf(EventID)};

 				curAttendee = provider.query(Attendees.CONTENT_URI, null, selection, selectionArgs, null);

 				selection = "(" + Reminders.EVENT_ID + " = ?)";

 				selectionArgs = new String[] {String.valueOf(EventID)};

 				curReminder = provider.query(Reminders.CONTENT_URI, null, selection, selectionArgs, null);

 				androidEvent.readAttendees(curAttendee);

 				androidEvent.readReminder(curReminder);

 				curAttendee.close();

 				curReminder.close();

 				String SyncID = androidEvent.ContentValues.getAsString(Events._SYNC_ID);

 				boolean Deleted = false;

 				int intDeleted = 0;

 				intDeleted = curEvent.getInt(curEvent.getColumnIndex(Events.DELETED));

 				Deleted = (intDeleted == 1);

 				if (SyncID == null) {

 					// new Android event

 					String newGUID = java.util.UUID.randomUUID().toString() + "-caldavsyncadapter";

 					String calendarPath = caldavCalendarUri.getPath();

 					if (!calendarPath.endsWith("/"))

 						calendarPath += "/";

 					SyncID = calendarPath + newGUID + ".ics";

 					androidEvent.createIcs(newGUID);

 					if (facade.createEvent(URI.create(SyncID), androidEvent.getIcsEvent().toString())) {

 						//HINT: bugfix for google calendar replace("@", "%40")

 						if (SyncID.contains("@"))

 							SyncID = SyncID.replace("@", "%40");

 						ContentValues values = new ContentValues();

 						values.put(Events._SYNC_ID, SyncID);

 						//google doesn't send the etag after creation

 						//HINT: my SabreDAV send always the same etag after putting a new event

 						//String LastETag = facade.getLastETag();

 						//if (!LastETag.equals("")) {

 						//	values.put(Event.ETAG, LastETag);

 						//} else {

 							//so get the etag with a new REPORT

 							CalendarEvent calendarEvent = new CalendarEvent(account, provider);

 							calendarEvent.calendarURL = caldavCalendarUri.toURL();

 							URI SyncURI = new URI(SyncID);

 							calendarEvent.setUri(SyncURI);

 							CaldavFacade.getEvent(calendarEvent);

 							values.put(Event.ETAG, calendarEvent.getETag());

 						//}

 						values.put(Event.UID, newGUID);

 						values.put(Events.DIRTY, 0);

 						values.put(Event.RAWDATA, androidEvent.getIcsEvent().toString());

 						int rowCount = provider.update(asSyncAdapter(androidEvent.getUri(), account.name, account.type), values, null, null);

 						if (rowCount == 1) {

 							rowInsert += 1;

 							notifyList.add(androidEvent.getUri());

 						}

 					}

 				} else if (Deleted) {

 					// deleted Android event

 					if (facade.deleteEvent(URI.create(SyncID), androidEvent.getETag())) {

 						String mSelectionClause = "(" + Events._ID +  "= ?)";

 						String[] mSelectionArgs = {String.valueOf(EventID)};

 						int countDeleted = provider.delete(asSyncAdapter(Events.CONTENT_URI, account.name, account.type), mSelectionClause, mSelectionArgs);	

 						if (countDeleted == 1) {

 							rowDelete += 1;

 							notifyList.add(androidEvent.getUri());

 						}

 					}

 				} else {

 					//update the android event to the server

 					String uid = androidEvent.getUID();

 					if ((uid == null) || (uid.equals(""))) {

 						//COMPAT: this is needed because in the past, the UID was not stored in the android event

 						CalendarEvent calendarEvent = new CalendarEvent(account, provider);

 						URI syncURI = new URI(SyncID);

 						calendarEvent.setUri(syncURI);

 						calendarEvent.calendarURL = caldavCalendarUri.toURL();

 						if (calendarEvent.fetchBody()) {

 							calendarEvent.readContentValues();

 							uid = calendarEvent.getUID();

 						}

 					}

 					if (uid != null) {

 						androidEvent.createIcs(uid);

 						if (facade.updateEvent(URI.create(SyncID), androidEvent.getIcsEvent().toString(), androidEvent.getETag())) {

 							selection = "(" + Events._ID + "= ?)";

 							selectionArgs = new String[] {EventID.toString()};

 							androidEvent.ContentValues.put(Events.DIRTY, 0);

 							//google doesn't send the etag after update

 							String LastETag = facade.getLastETag();

 							if (!LastETag.equals("")) {

 								androidEvent.ContentValues.put(Event.ETAG, LastETag);

 							} else {

 								//so get the etag with a new REPORT

 								CalendarEvent calendarEvent = new CalendarEvent(account, provider);

 								calendarEvent.calendarURL = caldavCalendarUri.toURL();

 								URI SyncURI = new URI(SyncID);

 								calendarEvent.setUri(SyncURI);

 								CaldavFacade.getEvent(calendarEvent);

 								androidEvent.ContentValues.put(Event.ETAG, calendarEvent.getETag());

 							}

 							androidEvent.ContentValues.put(Event.RAWDATA, androidEvent.getIcsEvent().toString());

 							int RowCount = provider.update(asSyncAdapter(androidEvent.getUri(), account.name, account.type), androidEvent.ContentValues, null, null);

 							if (RowCount == 1) {

 								rowUpdate += 1;

 								notifyList.add(androidEvent.getUri());

 							}

 						} else {

 							rowDirty += 1;

 						}

 					} else {

 						rowDirty += 1;

 					}

 				}

 			}

 			curEvent.close();

 			/*if ((rowInsert > 0) || (rowUpdate > 0) || (rowDelete > 0) || (rowDirty > 0)) {

 				Log.i(TAG,"Android Rows inserted: " + String.valueOf(rowInsert));

 				Log.i(TAG,"Android Rows updated:  " + String.valueOf(rowUpdate));

 				Log.i(TAG,"Android Rows deleted:  " + String.valueOf(rowDelete));

 				Log.i(TAG,"Android Rows dirty:    " + String.valueOf(rowDirty));

 			}*/

 			stats.numInserts += rowInsert;

 			stats.numUpdates += rowUpdate;

 			stats.numDeletes += rowDelete;

 			stats.numSkippedEntries += rowDirty;

 			stats.numEntries += rowInsert + rowUpdate + rowDelete;

 		} catch (RemoteException e) {

 			e.printStackTrace();

 		} catch (URISyntaxException e) {

 			// TODO Automatisch generierter Erfassungsblock

 			e.printStackTrace();

 		} catch (ClientProtocolException e) {

 			// TODO Automatisch generierter Erfassungsblock

 			e.printStackTrace();

 		} catch (IOException e) {

 			// TODO Automatisch generierter Erfassungsblock

 			e.printStackTrace();

 		} catch (CaldavProtocolException e) {

 			// TODO Automatisch generierter Erfassungsblock

 			e.printStackTrace();

 		} catch (ParserException e) {

 			// TODO Automatisch generierter Erfassungsblock

 			e.printStackTrace();

 		}

 		return rowDirty;

 	}

 /*	private Account UpgradeAccount(Account OldAccount) {

 		String Username = OldAccount.name;

 		String Type = OldAccount.type;

 		String Password = this.mAccountManager.getPassword(OldAccount);

 		String Url = this.mAccountManager.getUserData(OldAccount, AuthenticatorActivity.USER_DATA_URL_KEY);

 		Account NewAccount = new Account(Username + AuthenticatorActivity.ACCOUNT_NAME_SPLITTER + Url, Type);

 		if (this.mAccountManager.addAccountExplicitly(NewAccount, Password, null)) {

 			this.mAccountManager.setUserData(NewAccount, AuthenticatorActivity.USER_DATA_URL_KEY, Url);

 			this.mAccountManager.setUserData(NewAccount, AuthenticatorActivity.USER_DATA_USERNAME, Username);

 		}

 		this.mAccountManager.removeAccount(OldAccount, null, null);

 		return NewAccount;

 	}*/

 /*	private void dropAllEvents(Account account, ContentProviderClient provider,	Uri calendarUri) throws RemoteException {

 		Log.i(TAG, "Deleting all calendar events for "+calendarUri);

 		String selection = "(" + Events.CALENDAR_ID + " = ?)";

 		String[] selectionArgs = new String[] {Long.toString(ContentUris.parseId(calendarUri))}; 

 		provider.delete(asSyncAdapter(Events.CONTENT_URI, account.name, account.type), 

 				        selection, selectionArgs);

 	}*/

 	private static Uri asSyncAdapter(Uri uri, String account, String accountType) {

 	    return uri.buildUpon()

 	        .appendQueryParameter(android.provider.CalendarContract.CALLER_IS_SYNCADAPTER,"true")

 	        .appendQueryParameter(Calendars.ACCOUNT_NAME, account)

 	        .appendQueryParameter(Calendars.ACCOUNT_TYPE, accountType).build();

 	 }

 }