Caldavsync Sources: src/net/fortuna/ical4j/model/component/VEvent.java@73bdfa70b04e (annotated)

src/net/fortuna/ical4j/model/component/VEvent.java@73bdfa70b04e (annotated)

src/net/fortuna/ical4j/model/component/VEvent.java

Tue, 10 Feb 2015 19:38:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Tue, 10 Feb 2015 19:38:00 +0100
changeset 3: 73bdfa70b04e
parent 0: fb9019fb1bf7
child 4: 45d57ecba757
permissions: -rw-r--r--

Upgrade embedded ical4j from ancient whatever to upstream version 1.0.6.

 /**
  * Copyright (c) 2012, Ben Fortuna
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  *  o Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *
  *  o Redistributions in binary form must reproduce the above copyright
  * notice, this list of conditions and the following disclaimer in the
  * documentation and/or other materials provided with the distribution.
  *
  *  o Neither the name of Ben Fortuna nor the names of any other contributors
  * may be used to endorse or promote products derived from this software
  * without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 package net.fortuna.ical4j.model.component;
 import java.io.IOException;
 import java.net.URISyntaxException;
 import java.text.ParseException;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.Map;
 import net.fortuna.ical4j.model.Component;
 import net.fortuna.ical4j.model.ComponentList;
 import net.fortuna.ical4j.model.Date;
 import net.fortuna.ical4j.model.DateTime;
 import net.fortuna.ical4j.model.Dur;
 import net.fortuna.ical4j.model.Parameter;
 import net.fortuna.ical4j.model.Period;
 import net.fortuna.ical4j.model.PeriodList;
 import net.fortuna.ical4j.model.Property;
 import net.fortuna.ical4j.model.PropertyList;
 import net.fortuna.ical4j.model.ValidationException;
 import net.fortuna.ical4j.model.Validator;
 import net.fortuna.ical4j.model.parameter.Value;
 import net.fortuna.ical4j.model.property.Clazz;
 import net.fortuna.ical4j.model.property.Created;
 import net.fortuna.ical4j.model.property.Description;
 import net.fortuna.ical4j.model.property.DtEnd;
 import net.fortuna.ical4j.model.property.DtStamp;
 import net.fortuna.ical4j.model.property.DtStart;
 import net.fortuna.ical4j.model.property.Duration;
 import net.fortuna.ical4j.model.property.Geo;
 import net.fortuna.ical4j.model.property.LastModified;
 import net.fortuna.ical4j.model.property.Location;
 import net.fortuna.ical4j.model.property.Method;
 import net.fortuna.ical4j.model.property.Organizer;
 import net.fortuna.ical4j.model.property.Priority;
 import net.fortuna.ical4j.model.property.RecurrenceId;
 import net.fortuna.ical4j.model.property.Sequence;
 import net.fortuna.ical4j.model.property.Status;
 import net.fortuna.ical4j.model.property.Summary;
 import net.fortuna.ical4j.model.property.Transp;
 import net.fortuna.ical4j.model.property.Uid;
 import net.fortuna.ical4j.model.property.Url;
 import net.fortuna.ical4j.util.CompatibilityHints;
 import net.fortuna.ical4j.util.ComponentValidator;
 import net.fortuna.ical4j.util.Dates;
 import net.fortuna.ical4j.util.PropertyValidator;
 import net.fortuna.ical4j.util.Strings;
 import org.apache.commons.lang.ObjectUtils;
 import org.apache.commons.lang.builder.HashCodeBuilder;
 /**
  * $Id$ [Apr 5, 2004]
  *
  * Defines an iCalendar VEVENT component.
  *
  * <pre>
  *       4.6.1 Event Component
  *
  *          Component Name: &quot;VEVENT&quot;
  *
  *          Purpose: Provide a grouping of component properties that describe an
  *          event.
  *
  *          Format Definition: A &quot;VEVENT&quot; calendar component is defined by the
  *          following notation:
  *
  *            eventc     = &quot;BEGIN&quot; &quot;:&quot; &quot;VEVENT&quot; CRLF
  *                         eventprop *alarmc
  *                         &quot;END&quot; &quot;:&quot; &quot;VEVENT&quot; CRLF
  *
  *            eventprop  = *(
  *
  *                       ; the following are optional,
  *                       ; but MUST NOT occur more than once
  *
  *                       class / created / description / dtstart / geo /
  *                       last-mod / location / organizer / priority /
  *                       dtstamp / seq / status / summary / transp /
  *                       uid / url / recurid /
  *
  *                       ; either 'dtend' or 'duration' may appear in
  *                       ; a 'eventprop', but 'dtend' and 'duration'
  *                       ; MUST NOT occur in the same 'eventprop'
  *
  *                       dtend / duration /
  *
  *                       ; the following are optional,
  *                       ; and MAY occur more than once
  *
  *                       attach / attendee / categories / comment /
  *                       contact / exdate / exrule / rstatus / related /
  *                       resources / rdate / rrule / x-prop
  *
  *                       )
  * </pre>
  *
  * Example 1 - Creating a new all-day event:
  *
  * <pre><code>
  * java.util.Calendar cal = java.util.Calendar.getInstance();
  * cal.set(java.util.Calendar.MONTH, java.util.Calendar.DECEMBER);
  * cal.set(java.util.Calendar.DAY_OF_MONTH, 25);
  *
  * VEvent christmas = new VEvent(cal.getTime(), &quot;Christmas Day&quot;);
  *
  * // initialise as an all-day event..
  * christmas.getProperties().getProperty(Property.DTSTART).getParameters().add(
  *         Value.DATE);
  *
  * // add timezone information..
  * VTimeZone tz = VTimeZone.getDefault();
  * TzId tzParam = new TzId(tz.getProperties().getProperty(Property.TZID)
  *         .getValue());
  * christmas.getProperties().getProperty(Property.DTSTART).getParameters().add(
  *         tzParam);
  * </code></pre>
  *
  * Example 2 - Creating an event of one (1) hour duration:
  *
  * <pre><code>
  * java.util.Calendar cal = java.util.Calendar.getInstance();
  * // tomorrow..
  * cal.add(java.util.Calendar.DAY_OF_MONTH, 1);
  * cal.set(java.util.Calendar.HOUR_OF_DAY, 9);
  * cal.set(java.util.Calendar.MINUTE, 30);
  *
  * VEvent meeting = new VEvent(cal.getTime(), 1000 * 60 * 60, &quot;Progress Meeting&quot;);
  *
  * // add timezone information..
  * VTimeZone tz = VTimeZone.getDefault();
  * TzId tzParam = new TzId(tz.getProperties().getProperty(Property.TZID)
  *         .getValue());
  * meeting.getProperties().getProperty(Property.DTSTART).getParameters().add(
  *         tzParam);
  * </code></pre>
  *
  * Example 3 - Retrieve a list of periods representing a recurring event in a specified range:
  *
  * <pre><code>
  * Calendar weekday9AM = Calendar.getInstance();
  * weekday9AM.set(2005, Calendar.MARCH, 7, 9, 0, 0);
  * weekday9AM.set(Calendar.MILLISECOND, 0);
  *
  * Calendar weekday5PM = Calendar.getInstance();
  * weekday5PM.set(2005, Calendar.MARCH, 7, 17, 0, 0);
  * weekday5PM.set(Calendar.MILLISECOND, 0);
  *
  * // Do the recurrence until December 31st.
  * Calendar untilCal = Calendar.getInstance();
  * untilCal.set(2005, Calendar.DECEMBER, 31);
  * untilCal.set(Calendar.MILLISECOND, 0);
  *
  * // 9:00AM to 5:00PM Rule
  * Recur recur = new Recur(Recur.WEEKLY, untilCal.getTime());
  * recur.getDayList().add(WeekDay.MO);
  * recur.getDayList().add(WeekDay.TU);
  * recur.getDayList().add(WeekDay.WE);
  * recur.getDayList().add(WeekDay.TH);
  * recur.getDayList().add(WeekDay.FR);
  * recur.setInterval(3);
  * recur.setWeekStartDay(WeekDay.MO.getDay());
  * RRule rrule = new RRule(recur);
  *
  * Summary summary = new Summary(&quot;TEST EVENTS THAT HAPPEN 9-5 MON-FRI&quot;);
  *
  * weekdayNineToFiveEvents = new VEvent();
  * weekdayNineToFiveEvents.getProperties().add(rrule);
  * weekdayNineToFiveEvents.getProperties().add(summary);
  * weekdayNineToFiveEvents.getProperties().add(new DtStart(weekday9AM.getTime()));
  * weekdayNineToFiveEvents.getProperties().add(new DtEnd(weekday5PM.getTime()));
  *
  * // Test Start 04/01/2005, End One month later.
  * // Query Calendar Start and End Dates.
  * Calendar queryStartDate = Calendar.getInstance();
  * queryStartDate.set(2005, Calendar.APRIL, 1, 14, 47, 0);
  * queryStartDate.set(Calendar.MILLISECOND, 0);
  * Calendar queryEndDate = Calendar.getInstance();
  * queryEndDate.set(2005, Calendar.MAY, 1, 11, 15, 0);
  * queryEndDate.set(Calendar.MILLISECOND, 0);
  *
  * // This range is monday to friday every three weeks, starting from
  * // March 7th 2005, which means for our query dates we need
  * // April 18th through to the 22nd.
  * PeriodList periods = weekdayNineToFiveEvents.getPeriods(queryStartDate
  *         .getTime(), queryEndDate.getTime());
  * </code></pre>
  *
  * @author Ben Fortuna
  */
 public class VEvent extends CalendarComponent {
     private static final long serialVersionUID = 2547948989200697335L;
     private final Map methodValidators = new HashMap();
     {
         methodValidators.put(Method.ADD, new AddValidator());
         methodValidators.put(Method.CANCEL, new CancelValidator());
         methodValidators.put(Method.COUNTER, new CounterValidator());
         methodValidators.put(Method.DECLINE_COUNTER, new DeclineCounterValidator());
         methodValidators.put(Method.PUBLISH, new PublishValidator());
         methodValidators.put(Method.REFRESH, new RefreshValidator());
         methodValidators.put(Method.REPLY, new ReplyValidator());
         methodValidators.put(Method.REQUEST, new RequestValidator());
     }
     private ComponentList alarms;
     /**
      * Default constructor.
      */
     public VEvent() {
         super(VEVENT);
         this.alarms = new ComponentList();
         getProperties().add(new DtStamp());
     }
     /**
      * Constructor.
      * @param properties a list of properties
      */
     public VEvent(final PropertyList properties) {
         super(VEVENT, properties);
         this.alarms = new ComponentList();
     }
     /**
      * Constructor.
      * @param properties a list of properties
      * @param alarms a list of alarms
      */
     public VEvent(final PropertyList properties, final ComponentList alarms) {
         super(VEVENT, properties);
         this.alarms = alarms;
     }
     /**
      * Constructs a new VEVENT instance starting at the specified time with the specified summary.
      * @param start the start date of the new event
      * @param summary the event summary
      */
     public VEvent(final Date start, final String summary) {
         this();
         getProperties().add(new DtStart(start));
         getProperties().add(new Summary(summary));
     }
     /**
      * Constructs a new VEVENT instance starting and ending at the specified times with the specified summary.
      * @param start the start date of the new event
      * @param end the end date of the new event
      * @param summary the event summary
      */
     public VEvent(final Date start, final Date end, final String summary) {
         this();
         getProperties().add(new DtStart(start));
         getProperties().add(new DtEnd(end));
         getProperties().add(new Summary(summary));
     }
     /**
      * Constructs a new VEVENT instance starting at the specified times, for the specified duration, with the specified
      * summary.
      * @param start the start date of the new event
      * @param duration the duration of the new event
      * @param summary the event summary
      */
     public VEvent(final Date start, final Dur duration, final String summary) {
         this();
         getProperties().add(new DtStart(start));
         getProperties().add(new Duration(duration));
         getProperties().add(new Summary(summary));
     }
     /**
      * Returns the list of alarms for this event.
      * @return a component list
      */
     public final ComponentList getAlarms() {
         return alarms;
     }
     /**
      * {@inheritDoc}
      */
     public final String toString() {
         final StringBuffer b = new StringBuffer();
         b.append(BEGIN);
         b.append(':');
         b.append(getName());
         b.append(Strings.LINE_SEPARATOR);
         b.append(getProperties());
         b.append(getAlarms());
         b.append(END);
         b.append(':');
         b.append(getName());
         b.append(Strings.LINE_SEPARATOR);
         return b.toString();
     }
     /**
      * {@inheritDoc}
      */
     public final void validate(final boolean recurse) throws ValidationException {
         // validate that getAlarms() only contains VAlarm components
         final Iterator iterator = getAlarms().iterator();
         while (iterator.hasNext()) {
             final Component component = (Component) iterator.next();
             if (!(component instanceof VAlarm)) {
                 throw new ValidationException("Component ["
                         + component.getName() + "] may not occur in VEVENT");
             }
             ((VAlarm) component).validate(recurse);
         }
         if (!CompatibilityHints
                 .isHintEnabled(CompatibilityHints.KEY_RELAXED_VALIDATION)) {
             // From "4.8.4.7 Unique Identifier":
             // Conformance: The property MUST be specified in the "VEVENT", "VTODO",
             // "VJOURNAL" or "VFREEBUSY" calendar components.
             PropertyValidator.getInstance().assertOne(Property.UID,
                     getProperties());
             // From "4.8.7.2 Date/Time Stamp":
             // Conformance: This property MUST be included in the "VEVENT", "VTODO",
             // "VJOURNAL" or "VFREEBUSY" calendar components.
             PropertyValidator.getInstance().assertOne(Property.DTSTAMP,
                     getProperties());
         }
         /*
          * ; the following are optional, ; but MUST NOT occur more than once class / created / description / dtstart /
          * geo / last-mod / location / organizer / priority / dtstamp / seq / status / summary / transp / uid / url /
          * recurid /
          */
         PropertyValidator.getInstance().assertOneOrLess(Property.CLASS,
                 getProperties());
         PropertyValidator.getInstance().assertOneOrLess(Property.CREATED,
                 getProperties());
         PropertyValidator.getInstance().assertOneOrLess(Property.DESCRIPTION,
                 getProperties());
         PropertyValidator.getInstance().assertOneOrLess(Property.DTSTART,
                 getProperties());
         PropertyValidator.getInstance().assertOneOrLess(Property.GEO,
                 getProperties());
         PropertyValidator.getInstance().assertOneOrLess(Property.LAST_MODIFIED,
                 getProperties());
         PropertyValidator.getInstance().assertOneOrLess(Property.LOCATION,
                 getProperties());
         PropertyValidator.getInstance().assertOneOrLess(Property.ORGANIZER,
                 getProperties());
         PropertyValidator.getInstance().assertOneOrLess(Property.PRIORITY,
                 getProperties());
         PropertyValidator.getInstance().assertOneOrLess(Property.DTSTAMP,
                 getProperties());
         PropertyValidator.getInstance().assertOneOrLess(Property.SEQUENCE,
                 getProperties());
         PropertyValidator.getInstance().assertOneOrLess(Property.STATUS,
                 getProperties());
         PropertyValidator.getInstance().assertOneOrLess(Property.SUMMARY,
                 getProperties());
         PropertyValidator.getInstance().assertOneOrLess(Property.TRANSP,
                 getProperties());
         PropertyValidator.getInstance().assertOneOrLess(Property.UID,
                 getProperties());
         PropertyValidator.getInstance().assertOneOrLess(Property.URL,
                 getProperties());
         PropertyValidator.getInstance().assertOneOrLess(Property.RECURRENCE_ID,
                 getProperties());
         final Status status = (Status) getProperty(Property.STATUS);
         if (status != null && !Status.VEVENT_TENTATIVE.getValue().equals(status.getValue())
                 && !Status.VEVENT_CONFIRMED.getValue().equals(status.getValue())
                 && !Status.VEVENT_CANCELLED.getValue().equals(status.getValue())) {
             throw new ValidationException("Status property ["
                     + status.toString() + "] is not applicable for VEVENT");
         }
         /*
          * ; either 'dtend' or 'duration' may appear in ; a 'eventprop', but 'dtend' and 'duration' ; MUST NOT occur in
          * the same 'eventprop' dtend / duration /
          */
         try {
             PropertyValidator.getInstance().assertNone(Property.DTEND,
                     getProperties());
         }
         catch (ValidationException ve) {
             PropertyValidator.getInstance().assertNone(Property.DURATION,
                     getProperties());
         }
         if (getProperty(Property.DTEND) != null) {
             /*
              * The "VEVENT" is also the calendar component used to specify an anniversary or daily reminder within a
              * calendar. These events have a DATE value type for the "DTSTART" property instead of the default data type
              * of DATE-TIME. If such a "VEVENT" has a "DTEND" property, it MUST be specified as a DATE value also. The
              * anniversary type of "VEVENT" can span more than one date (i.e, "DTEND" property value is set to a
              * calendar date after the "DTSTART" property value).
              */
             final DtStart start = (DtStart) getProperty(Property.DTSTART);
             final DtEnd end = (DtEnd) getProperty(Property.DTEND);
             if (start != null) {
                 final Parameter startValue = start.getParameter(Parameter.VALUE);
                 final Parameter endValue = end.getParameter(Parameter.VALUE);
                 boolean startEndValueMismatch = false;
                 if (endValue != null) {
                     if (startValue != null && !endValue.equals(startValue)) {
                         // invalid..
                         startEndValueMismatch = true;
                     }
                     else if (startValue == null && !Value.DATE_TIME.equals(endValue)) {
                         // invalid..
                         startEndValueMismatch = true;
                     }
                 }
                 else if (startValue != null && !Value.DATE_TIME.equals(startValue)) {
                     //invalid..
                     startEndValueMismatch = true;
                 }
                 if (startEndValueMismatch) {
                     throw new ValidationException("Property [" + Property.DTEND
                             + "] must have the same [" + Parameter.VALUE
                             + "] as [" + Property.DTSTART + "]");
                 }
             }
         }
         /*
          * ; the following are optional, ; and MAY occur more than once attach / attendee / categories / comment /
          * contact / exdate / exrule / rstatus / related / resources / rdate / rrule / x-prop
          */
         if (recurse) {
             validateProperties();
         }
     }
     /**
      * {@inheritDoc}
      */
     protected Validator getValidator(Method method) {
         return (Validator) methodValidators.get(method);
     }
     /**
      * METHOD:ADD Validator.
      *
      * <pre>
      * Component/Property  Presence
      * ------------------- ----------------------------------------------
      * METHOD              1      MUST be "ADD"
      * VEVENT              1
      *     DTSTAMP         1
      *     DTSTART         1
      *     ORGANIZER       1
      *     SEQUENCE        1      MUST be greater than 0
      *     SUMMARY         1      Can be null
      *     UID             1      MUST match that of the original event
      *
      *     ATTACH          0+
      *     ATTENDEE        0+
      *     CATEGORIES      0 or 1 This property MAY contain a list of values
      *     CLASS           0 or 1
      *     COMMENT         0 or 1
      *     CONTACT         0+
      *     CREATED         0 or 1
      *     DESCRIPTION     0 or 1  Can be null
      *     DTEND           0 or 1  if present DURATION MUST NOT be present
      *     DURATION        0 or 1  if present DTEND MUST NOT be present
      *     EXDATE          0+
      *     EXRULE          0+
      *     GEO             0 or 1
      *     LAST-MODIFIED   0 or 1
      *     LOCATION        0 or 1
      *     PRIORITY        0 or 1
      *     RDATE           0+
      *     RELATED-TO      0+
      *     RESOURCES       0 or 1  This property MAY contain a list of values
      *     RRULE           0+
      *     STATUS          0 or 1  MAY be one of TENTATIVE/CONFIRMED
      *     TRANSP          0 or 1
      *     URL             0 or 1
      *     X-PROPERTY      0+
      *
      *     RECURRENCE-ID   0
      *     REQUEST-STATUS  0
      *
      * VALARM              0+
      * VTIMEZONE           0+     MUST be present if any date/time refers to
      *                            a timezone
      * X-COMPONENT         0+
      *
      * VFREEBUSY           0
      * VTODO               0
      * VJOURNAL            0
      * </pre>
      *
      */
     private class AddValidator implements Validator {
 		private static final long serialVersionUID = 1L;
 		public void validate() throws ValidationException {
             PropertyValidator.getInstance().assertOne(Property.DTSTAMP, getProperties());
             PropertyValidator.getInstance().assertOne(Property.DTSTART, getProperties());
             PropertyValidator.getInstance().assertOne(Property.ORGANIZER, getProperties());
             PropertyValidator.getInstance().assertOne(Property.SEQUENCE, getProperties());
             PropertyValidator.getInstance().assertOne(Property.SUMMARY, getProperties());
             PropertyValidator.getInstance().assertOne(Property.UID, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.CATEGORIES, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.CLASS, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.CREATED, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DESCRIPTION, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DTEND, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DURATION, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.GEO, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.LAST_MODIFIED, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.LOCATION, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.PRIORITY, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.RESOURCES, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.STATUS, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.TRANSP, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.URL, getProperties());
             PropertyValidator.getInstance().assertNone(Property.RECURRENCE_ID, getProperties());
             PropertyValidator.getInstance().assertNone(Property.REQUEST_STATUS, getProperties());
             for (final Iterator i = getAlarms().iterator(); i.hasNext();) {
                 final VAlarm alarm = (VAlarm) i.next();
                 alarm.validate(Method.ADD);
             }
         }
     }
     /**
      * METHOD:CANCEL Validator.
      *
      * <pre>
      * Component/Property  Presence
      * ------------------- ----------------------------------------------
      * METHOD              1      MUST be "CANCEL"
      *
      * VEVENT              1+     All must have the same UID
      *     ATTENDEE        0+     MUST include all "Attendees" being removed
      *                            the event. MUST include all "Attendees" if
      *                            the entire event is cancelled.
      *     DTSTAMP         1
      *     ORGANIZER       1
      *     SEQUENCE        1
      *     UID             1       MUST be the UID of the original REQUEST
      *
      *     COMMENT         0 or 1
      *     ATTACH          0+
      *     CATEGORIES      0 or 1  This property may contain a list of values
      *     CLASS           0 or 1
      *     CONTACT         0+
      *     CREATED         0 or 1
      *     DESCRIPTION     0 or 1
      *     DTEND           0 or 1 if present DURATION MUST NOT be present
      *     DTSTART         0 or 1
      *     DURATION        0 or 1 if present DTEND MUST NOT be present
      *     EXDATE          0+
      *     EXRULE          0+
      *     GEO             0 or 1
      *     LAST-MODIFIED   0 or 1
      *     LOCATION        0 or 1
      *     PRIORITY        0 or 1
      *     RDATE           0+
      *     RECURRENCE-ID   0 or 1  MUST be present if referring to one or
      *                             more or more recurring instances.
      *                             Otherwise it MUST NOT be present
      *     RELATED-TO      0+
      *     RESOURCES       0 or 1
      *     RRULE           0+
      *     STATUS          0 or 1  MUST be set to CANCELLED. If uninviting
      *                             specific "Attendees" then MUST NOT be
      *                             included.
      *     SUMMARY         0 or 1
      *     TRANSP          0 or 1
      *     URL             0 or 1
      *     X-PROPERTY      0+
      *     REQUEST-STATUS  0
      *
      * VTIMEZONE           0+     MUST be present if any date/time refers to
      *                            a timezone
      * X-COMPONENT         0+
      *
      * VTODO               0
      * VJOURNAL            0
      * VFREEBUSY           0
      * VALARM              0
      * </pre>
      *
      */
     private class CancelValidator implements Validator {
 		private static final long serialVersionUID = 1L;
         public final void validate() throws ValidationException {
             PropertyValidator.getInstance().assertOne(Property.DTSTAMP, getProperties());
             PropertyValidator.getInstance().assertOne(Property.DTSTART, getProperties());
             PropertyValidator.getInstance().assertOne(Property.ORGANIZER, getProperties());
             PropertyValidator.getInstance().assertOne(Property.SEQUENCE, getProperties());
             PropertyValidator.getInstance().assertOne(Property.UID, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.CATEGORIES, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.CLASS, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.CREATED, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DESCRIPTION, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DTEND, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DTSTART, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DURATION, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.GEO, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.LAST_MODIFIED, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.LOCATION, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.PRIORITY, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.RECURRENCE_ID, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.RESOURCES, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.STATUS, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.SUMMARY, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.TRANSP, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.URL, getProperties());
             PropertyValidator.getInstance().assertNone(Property.REQUEST_STATUS, getProperties());
             ComponentValidator.assertNone(Component.VALARM, getAlarms());
         }
     }
     /**
      * METHOD:COUNTER Validator.
      *
      * <pre>
      * Component/Property  Presence
      * ------------------- ----------------------------------------------
      * METHOD              1      MUST be "COUNTER"
      *
      * VEVENT              1
      *     DTSTAMP         1
      *     DTSTART         1
      *     ORGANIZER       1       MUST be the "Organizer" of the original
      *                             event
      *     SEQUENCE        1       MUST be present if value is greater than 0,
      *                             MAY be present if 0
      *     SUMMARY         1       Can be null
      *     UID             1       MUST be the UID associated with the REQUEST
      *                             being countered
      *
      *     ATTACH          0+
      *     ATTENDEE        0+      Can also  be used to propose other
      *                             "Attendees"
      *     CATEGORIES      0 or 1  This property may contain a list of values
      *     CLASS           0 or 1
      *     COMMENT         0 or 1
      *     CONTACT         0+
      *     CREATED         0 or 1
      *     DESCRIPTION     0 or 1
      *     DTEND           0 or 1  if present DURATION MUST NOT be present
      *     DURATION        0 or 1  if present DTEND MUST NOT be present
      *     EXDATE          0+
      *     EXRULE          0+
      *     GEO             0 or 1
      *     LAST-MODIFIED   0 or 1
      *     LOCATION        0 or 1
      *     PRIORITY        0 or 1
      *     RDATE           0+
      *     RECURRENCE-ID   0 or 1  MUST only if referring to an instance of a
      *                             recurring calendar component.  Otherwise it
      *                             MUST NOT be present.
      *     RELATED-TO      0+
      *     REQUEST-STATUS  0+
      *     RESOURCES       0 or 1  This property may contain a list of values
      *     RRULE           0+
      *     STATUS          0 or 1  Value must be one of CONFIRMED/TENATIVE/
      *                             CANCELLED
      *     TRANSP          0 or 1
      *     URL             0 or 1
      *     X-PROPERTY      0+
      *
      * VALARM              0+
      * VTIMEZONE           0+      MUST be present if any date/time refers to
      *                             a timezone
      * X-COMPONENT         0+
      *
      * VTODO               0
      * VJOURNAL            0
      * VFREEBUSY           0
      * </pre>
      *
      */
     private class CounterValidator implements Validator {
 		private static final long serialVersionUID = 1L;
         public void validate() throws ValidationException {
             PropertyValidator.getInstance().assertOne(Property.DTSTAMP, getProperties());
             PropertyValidator.getInstance().assertOne(Property.DTSTART, getProperties());
             if (!CompatibilityHints.isHintEnabled(CompatibilityHints.KEY_RELAXED_VALIDATION)) {
                 PropertyValidator.getInstance().assertOne(Property.ORGANIZER, getProperties());
             }
             PropertyValidator.getInstance().assertOne(Property.SEQUENCE, getProperties());
             PropertyValidator.getInstance().assertOne(Property.SUMMARY, getProperties());
             PropertyValidator.getInstance().assertOne(Property.UID, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.CATEGORIES, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.CLASS, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.CREATED, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DESCRIPTION, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DTEND, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DURATION, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.GEO, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.LAST_MODIFIED, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.LOCATION, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.PRIORITY, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.RECURRENCE_ID, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.RESOURCES, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.STATUS, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.TRANSP, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.URL, getProperties());
             for (final Iterator i = getAlarms().iterator(); i.hasNext();) {
                 final VAlarm alarm = (VAlarm) i.next();
                 alarm.validate(Method.COUNTER);
             }
         }
     }
     /**
      * METHOD:DECLINECOUNTER Validator.
      *
      * <pre>
      * Component/Property  Presence
      * ------------------- ----------------------------------------------
      * METHOD              1      MUST be "DECLINECOUNTER"
      *
      * VEVENT              1
      *     DTSTAMP         1
      *     ORGANIZER       1
      *     UID             1       MUST, same UID specified in original
      *                             REQUEST and subsequent COUNTER
      *     COMMENT         0 or 1
      *     RECURRENCE-ID   0 or 1  MUST only if referring to an instance of a
      *                             recurring calendar component.  Otherwise it
      *                             MUST NOT be present.
      *     REQUEST-STATUS  0+
      *     SEQUENCE        0 OR 1  MUST be present if value is greater than 0,
      *                             MAY be present if 0
      *     X-PROPERTY      0+
      *     ATTACH          0
      *     ATTENDEE        0
      *     CATEGORIES      0
      *     CLASS           0
      *     CONTACT         0
      *     CREATED         0
      *     DESCRIPTION     0
      *     DTEND           0
      *     DTSTART         0
      *     DURATION        0
      *     EXDATE          0
      *     EXRULE          0
      *     GEO             0
      *     LAST-MODIFIED   0
      *     LOCATION        0
      *     PRIORITY        0
      *     RDATE           0
      *     RELATED-TO      0
      *     RESOURCES       0
      *     RRULE           0
      *     STATUS          0
      *     SUMMARY         0
      *     TRANSP          0
      *     URL             0
      *
      * X-COMPONENT         0+
      * VTODO               0
      * VJOURNAL            0
      * VFREEBUSY           0
      * VTIMEZONE           0
      * VALARM              0
      * </pre>
      *
      */
     private class DeclineCounterValidator implements Validator {
 		private static final long serialVersionUID = 1L;
         public void validate() throws ValidationException {
             PropertyValidator.getInstance().assertOne(Property.DTSTAMP, getProperties());
             PropertyValidator.getInstance().assertOne(Property.ORGANIZER, getProperties());
             PropertyValidator.getInstance().assertOne(Property.UID, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.RECURRENCE_ID, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.SEQUENCE, getProperties());
             PropertyValidator.getInstance().assertNone(Property.ATTACH, getProperties());
             PropertyValidator.getInstance().assertNone(Property.ATTENDEE, getProperties());
             PropertyValidator.getInstance().assertNone(Property.CATEGORIES, getProperties());
             PropertyValidator.getInstance().assertNone(Property.CLASS, getProperties());
             PropertyValidator.getInstance().assertNone(Property.CONTACT, getProperties());
             PropertyValidator.getInstance().assertNone(Property.CREATED, getProperties());
             PropertyValidator.getInstance().assertNone(Property.DESCRIPTION, getProperties());
             PropertyValidator.getInstance().assertNone(Property.DTEND, getProperties());
             PropertyValidator.getInstance().assertNone(Property.DTSTART, getProperties());
             PropertyValidator.getInstance().assertNone(Property.DURATION, getProperties());
             PropertyValidator.getInstance().assertNone(Property.EXDATE, getProperties());
             PropertyValidator.getInstance().assertNone(Property.EXRULE, getProperties());
             PropertyValidator.getInstance().assertNone(Property.GEO, getProperties());
             PropertyValidator.getInstance().assertNone(Property.LAST_MODIFIED, getProperties());
             PropertyValidator.getInstance().assertNone(Property.LOCATION, getProperties());
             PropertyValidator.getInstance().assertNone(Property.PRIORITY, getProperties());
             PropertyValidator.getInstance().assertNone(Property.RDATE, getProperties());
             PropertyValidator.getInstance().assertNone(Property.RELATED_TO, getProperties());
             PropertyValidator.getInstance().assertNone(Property.RESOURCES, getProperties());
             PropertyValidator.getInstance().assertNone(Property.RRULE, getProperties());
             PropertyValidator.getInstance().assertNone(Property.STATUS, getProperties());
             PropertyValidator.getInstance().assertNone(Property.SUMMARY, getProperties());
             PropertyValidator.getInstance().assertNone(Property.TRANSP, getProperties());
             PropertyValidator.getInstance().assertNone(Property.URL, getProperties());
             ComponentValidator.assertNone(Component.VALARM, getAlarms());
         }
     }
     /**
      * METHOD:PUBLISH Validator.
      *
      * <pre>
      * Component/Property  Presence
      * ------------------- ----------------------------------------------
      * METHOD              1       MUST equal "PUBLISH"
      * VEVENT              1+
      *      DTSTAMP        1
      *      DTSTART        1
      *      ORGANIZER      1
      *      SUMMARY        1       Can be null.
      *      UID            1
      *      RECURRENCE-ID  0 or 1  only if referring to an instance of a
      *                             recurring calendar component.  Otherwise
      *                             it MUST NOT be present.
      *      SEQUENCE       0 or 1  MUST be present if value is greater than
      *                             0, MAY be present if 0
      *      ATTACH         0+
      *      CATEGORIES     0 or 1  This property may contain a list of
      *                             values
      *      CLASS          0 or 1
      *      COMMENT        0 or 1
      *      CONTACT        0+
      *      CREATED        0 or 1
      *      DESCRIPTION    0 or 1  Can be null
      *      DTEND          0 or 1  if present DURATION MUST NOT be present
      *      DURATION       0 or 1  if present DTEND MUST NOT be present
      *      EXDATE         0+
      *      EXRULE         0+
      *      GEO            0 or 1
      *      LAST-MODIFIED  0 or 1
      *      LOCATION       0 or 1
      *      PRIORITY       0 or 1
      *      RDATE          0+
      *      RELATED-TO     0+
      *      RESOURCES      0 or 1 This property MAY contain a list of values
      *      RRULE          0+
      *      STATUS         0 or 1 MAY be one of TENTATIVE/CONFIRMED/CANCELLED
      *      TRANSP         0 or 1
      *      URL            0 or 1
      *      X-PROPERTY     0+
      *
      *      ATTENDEE       0
      *      REQUEST-STATUS 0
      *
      * VALARM              0+
      * VFREEBUSY           0
      * VJOURNAL            0
      * VTODO               0
      * VTIMEZONE           0+    MUST be present if any date/time refers to
      *                           a timezone
      * X-COMPONENT         0+
      * </pre>
      *
      */
     private class PublishValidator implements Validator {
 		private static final long serialVersionUID = 1L;
         public void validate() throws ValidationException {
             PropertyValidator.getInstance().assertOne(Property.DTSTAMP, getProperties());
             PropertyValidator.getInstance().assertOne(Property.DTSTART, getProperties());
             if (!CompatibilityHints.isHintEnabled(CompatibilityHints.KEY_RELAXED_VALIDATION)) {
                 PropertyValidator.getInstance().assertOne(Property.ORGANIZER, getProperties());
                 PropertyValidator.getInstance().assertOne(Property.SUMMARY, getProperties());
             }
             PropertyValidator.getInstance().assertOne(Property.UID, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.RECURRENCE_ID, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.SEQUENCE, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.CATEGORIES, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.CLASS, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.CREATED, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DESCRIPTION, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DTEND, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DURATION, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.GEO, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.LAST_MODIFIED, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.LOCATION, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.PRIORITY, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.RESOURCES, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.STATUS, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.TRANSP, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.URL, getProperties());
             if (!CompatibilityHints.isHintEnabled(CompatibilityHints.KEY_RELAXED_VALIDATION)) {
                 PropertyValidator.getInstance().assertNone(Property.ATTENDEE, getProperties());
             }
             PropertyValidator.getInstance().assertNone(Property.REQUEST_STATUS, getProperties());
             for (final Iterator i = getAlarms().iterator(); i.hasNext();) {
                 final VAlarm alarm = (VAlarm) i.next();
                 alarm.validate(Method.PUBLISH);
             }
         }
     }
     /**
      * METHOD:REFRESH Validator.
      *
      * <pre>
      * Component/Property  Presence
      * ------------------- ----------------------------------------------
      * METHOD              1      MUST be "REFRESH"
      *
      * VEVENT              1
      *     ATTENDEE        1      MUST be the address of requestor
      *     DTSTAMP         1
      *     ORGANIZER       1
      *     UID             1      MUST be the UID associated with original
      *                            REQUEST
      *     COMMENT         0 or 1
      *     RECURRENCE-ID   0 or 1 MUST only if referring to an instance of a
      *                            recurring calendar component.  Otherwise
      *                            it must NOT be present.
      *     X-PROPERTY      0+
      *
      *     ATTACH          0
      *     CATEGORIES      0
      *     CLASS           0
      *     CONTACT         0
      *     CREATED         0
      *     DESCRIPTION     0
      *     DTEND           0
      *     DTSTART         0
      *     DURATION        0
      *     EXDATE          0
      *     EXRULE          0
      *     GEO             0
      *     LAST-MODIFIED   0
      *     LOCATION        0
      *     PRIORITY        0
      *     RDATE           0
      *     RELATED-TO      0
      *     REQUEST-STATUS  0
      *     RESOURCES       0
      *     RRULE           0
      *     SEQUENCE        0
      *     STATUS          0
      *     SUMMARY         0
      *     TRANSP          0
      *     URL             0
      *
      * X-COMPONENT         0+
      *
      * VTODO               0
      * VJOURNAL            0
      * VFREEBUSY           0
      * VTIMEZONE           0
      * VALARM              0
      * </pre>
      *
      */
     private class RefreshValidator implements Validator {
 		private static final long serialVersionUID = 1L;
         public void validate() throws ValidationException {
             PropertyValidator.getInstance().assertOne(Property.ATTENDEE, getProperties());
             PropertyValidator.getInstance().assertOne(Property.DTSTAMP, getProperties());
             PropertyValidator.getInstance().assertOne(Property.ORGANIZER, getProperties());
             PropertyValidator.getInstance().assertOne(Property.UID, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.RECURRENCE_ID, getProperties());
             PropertyValidator.getInstance().assertNone(Property.ATTACH, getProperties());
             PropertyValidator.getInstance().assertNone(Property.CATEGORIES, getProperties());
             PropertyValidator.getInstance().assertNone(Property.CLASS, getProperties());
             PropertyValidator.getInstance().assertNone(Property.CONTACT, getProperties());
             PropertyValidator.getInstance().assertNone(Property.CREATED, getProperties());
             PropertyValidator.getInstance().assertNone(Property.DESCRIPTION, getProperties());
             PropertyValidator.getInstance().assertNone(Property.DTEND, getProperties());
             PropertyValidator.getInstance().assertNone(Property.DTSTART, getProperties());
             PropertyValidator.getInstance().assertNone(Property.DURATION, getProperties());
             PropertyValidator.getInstance().assertNone(Property.EXDATE, getProperties());
             PropertyValidator.getInstance().assertNone(Property.EXRULE, getProperties());
             PropertyValidator.getInstance().assertNone(Property.GEO, getProperties());
             PropertyValidator.getInstance().assertNone(Property.LAST_MODIFIED, getProperties());
             PropertyValidator.getInstance().assertNone(Property.LOCATION, getProperties());
             PropertyValidator.getInstance().assertNone(Property.PRIORITY, getProperties());
             PropertyValidator.getInstance().assertNone(Property.RDATE, getProperties());
             PropertyValidator.getInstance().assertNone(Property.RELATED_TO, getProperties());
             PropertyValidator.getInstance().assertNone(Property.REQUEST_STATUS, getProperties());
             PropertyValidator.getInstance().assertNone(Property.RESOURCES, getProperties());
             PropertyValidator.getInstance().assertNone(Property.RRULE, getProperties());
             PropertyValidator.getInstance().assertNone(Property.SEQUENCE, getProperties());
             PropertyValidator.getInstance().assertNone(Property.STATUS, getProperties());
             PropertyValidator.getInstance().assertNone(Property.SUMMARY, getProperties());
             PropertyValidator.getInstance().assertNone(Property.TRANSP, getProperties());
             PropertyValidator.getInstance().assertNone(Property.URL, getProperties());
             ComponentValidator.assertNone(Component.VALARM, getAlarms());
         }
     }
     /**
      * METHOD:REPLY Validator.
      *
      * <pre>
      * Component/Property  Presence
      * ------------------- ----------------------------------------------
      * METHOD              1       MUST be "REPLY"
      * VEVENT              1+      All components MUST have the same UID
      *     ATTENDEE        1       MUST be the address of the Attendee
      *                             replying.
      *     DTSTAMP         1
      *     ORGANIZER       1
      *     RECURRENCE-ID   0 or 1  only if referring to an instance of a
      *                             recurring calendar component.  Otherwise
      *                             it must NOT be present.
      *     UID             1       MUST be the UID of the original REQUEST
      *
      *     SEQUENCE        0 or 1  MUST if non-zero, MUST be the sequence
      *                             number of the original REQUEST. MAY be
      *                             present if 0.
      *
      *     ATTACH          0+
      *     CATEGORIES      0 or 1  This property may contain a list of values
      *     CLASS           0 or 1
      *     COMMENT         0 or 1
      *     CONTACT         0+
      *     CREATED         0 or 1
      *     DESCRIPTION     0 or 1
      *     DTEND           0 or 1  if present DURATION MUST NOT be present
      *     DTSTART         0 or 1
      *     DURATION        0 or 1  if present DTEND MUST NOT be present
      *     EXDATE          0+
      *     EXRULE          0+
      *     GEO             0 or 1
      *     LAST-MODIFIED   0 or 1
      *     LOCATION        0 or 1
      *     PRIORITY        0 or 1
      *     RDATE           0+
      *     RELATED-TO      0+
      *     RESOURCES       0 or 1  This property MAY contain a list of values
      *     REQUEST-STATUS  0+
      *     RRULE           0+
      *     STATUS          0 or 1
      *     SUMMARY         0 or 1
      *     TRANSP          0 or 1
      *     URL             0 or 1
      *     X-PROPERTY      0+
      *
      * VTIMEZONE           0 or 1 MUST be present if any date/time refers
      *                            to a timezone
      * X-COMPONENT         0+
      *
      * VALARM              0
      * VFREEBUSY           0
      * VJOURNAL            0
      * VTODO               0
      * </pre>
      *
      */
     private class ReplyValidator implements Validator {
 		private static final long serialVersionUID = 1L;
         public void validate() throws ValidationException {
             PropertyValidator.getInstance().assertOne(Property.ATTENDEE, getProperties());
             PropertyValidator.getInstance().assertOne(Property.DTSTAMP, getProperties());
             PropertyValidator.getInstance().assertOne(Property.ORGANIZER, getProperties());
             PropertyValidator.getInstance().assertOne(Property.UID, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.RECURRENCE_ID, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.SEQUENCE, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.CATEGORIES, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.CLASS, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.CREATED, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DESCRIPTION, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DTEND, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DTSTART, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DURATION, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.GEO, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.LAST_MODIFIED, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.LOCATION, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.PRIORITY, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.RESOURCES, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.STATUS, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.SUMMARY, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.TRANSP, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.URL, getProperties());
             ComponentValidator.assertNone(Component.VALARM, getAlarms());
         }
     }
     /**
      * METHOD:REQUEST Validator.
      *
      * <pre>
      * Component/Property  Presence
      * -----------------------------------------------------------------
      * METHOD              1       MUST be "REQUEST"
      * VEVENT              1+      All components MUST have the same UID
      *     ATTENDEE        1+
      *     DTSTAMP         1
      *     DTSTART         1
      *     ORGANIZER       1
      *     SEQUENCE        0 or 1  MUST be present if value is greater than 0,
      *                             MAY be present if 0
      *     SUMMARY         1       Can be null
      *     UID             1
      *
      *     ATTACH          0+
      *     CATEGORIES      0 or 1  This property may contain a list of values
      *     CLASS           0 or 1
      *     COMMENT         0 or 1
      *     CONTACT         0+
      *     CREATED         0 or 1
      *     DESCRIPTION     0 or 1  Can be null
      *     DTEND           0 or 1  if present DURATION MUST NOT be present
      *     DURATION        0 or 1  if present DTEND MUST NOT be present
      *     EXDATE          0+
      *     EXRULE          0+
      *     GEO             0 or 1
      *     LAST-MODIFIED   0 or 1
      *     LOCATION        0 or 1
      *     PRIORITY        0 or 1
      *     RDATE           0+
      *     RECURRENCE-ID   0 or 1  only if referring to an instance of a
      *                             recurring calendar component.  Otherwise it
      *                             MUST NOT be present.
      *     RELATED-TO      0+
      *     REQUEST-STATUS  0+
      *     RESOURCES       0 or 1  This property MAY contain a list of values
      *     RRULE           0+
      *     STATUS          0 or 1  MAY be one of TENTATIVE/CONFIRMED
      *     TRANSP          0 or 1
      *     URL             0 or 1
      *     X-PROPERTY      0+
      *
      * VALARM              0+
      * VTIMEZONE           0+      MUST be present if any date/time refers to
      *                             a timezone
      * X-COMPONENT         0+
      * VFREEBUSY           0
      * VJOURNAL            0
      * VTODO               0
      * </pre>
      *
      */
     private class RequestValidator implements Validator {
 		private static final long serialVersionUID = 1L;
         public void validate() throws ValidationException {
             if (!CompatibilityHints.isHintEnabled(CompatibilityHints.KEY_RELAXED_VALIDATION)) {
                 PropertyValidator.getInstance().assertOneOrMore(Property.ATTENDEE, getProperties());
             }
             PropertyValidator.getInstance().assertOne(Property.DTSTAMP, getProperties());
             PropertyValidator.getInstance().assertOne(Property.DTSTART, getProperties());
             PropertyValidator.getInstance().assertOne(Property.ORGANIZER, getProperties());
             PropertyValidator.getInstance().assertOne(Property.SUMMARY, getProperties());
             PropertyValidator.getInstance().assertOne(Property.UID, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.SEQUENCE, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.CATEGORIES, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.CLASS, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.CREATED, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DESCRIPTION, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DTEND, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.DURATION, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.GEO, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.LAST_MODIFIED, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.LOCATION, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.PRIORITY, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.RECURRENCE_ID, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.RESOURCES, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.STATUS, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.TRANSP, getProperties());
             PropertyValidator.getInstance().assertOneOrLess(Property.URL, getProperties());
             for (final Iterator i = getAlarms().iterator(); i.hasNext();) {
                 final VAlarm alarm = (VAlarm) i.next();
                 alarm.validate(Method.REQUEST);
             }
         }
     }
     /**
      * Returns a normalised list of periods representing the consumed time for this event.
      * @param rangeStart the start of a range
      * @param rangeEnd the end of a range
      * @return a normalised list of periods representing consumed time for this event
      * @see VEvent#getConsumedTime(Date, Date, boolean)
      */
     public final PeriodList getConsumedTime(final Date rangeStart,
             final Date rangeEnd) {
         return getConsumedTime(rangeStart, rangeEnd, true);
     }
     /**
      * Returns a list of periods representing the consumed time for this event in the specified range. Note that the
      * returned list may contain a single period for non-recurring components or multiple periods for recurring
      * components. If no time is consumed by this event an empty list is returned.
      * @param rangeStart the start of the range to check for consumed time
      * @param rangeEnd the end of the range to check for consumed time
      * @param normalise indicate whether the returned list of periods should be normalised
      * @return a list of periods representing consumed time for this event
      */
     public final PeriodList getConsumedTime(final Date rangeStart,
             final Date rangeEnd, final boolean normalise) {
         PeriodList periods = new PeriodList();
         // if component is transparent return empty list..
         if (!Transp.TRANSPARENT.equals(getProperty(Property.TRANSP))) {
 //          try {
           periods = calculateRecurrenceSet(new Period(new DateTime(rangeStart),
                   new DateTime(rangeEnd)));
 //          }
 //          catch (ValidationException ve) {
 //              log.error("Invalid event data", ve);
 //              return periods;
 //          }
           // if periods already specified through recurrence, return..
           // ..also normalise before returning.
           if (!periods.isEmpty() && normalise) {
               periods = periods.normalise();
           }
         }
         return periods;
     }
     /**
      * Returns a single occurrence of a recurring event.
      * @param date a date on which the occurence should occur
      * @return a single non-recurring event instance for the specified date, or null if the event doesn't
      * occur on the specified date
      * @throws IOException where an error occurs reading data
      * @throws URISyntaxException where an invalid URI is encountered
      * @throws ParseException where an error occurs parsing data
      */
     public final VEvent getOccurrence(final Date date) throws IOException,
         URISyntaxException, ParseException {
         final PeriodList consumedTime = getConsumedTime(date, date);
         for (final Iterator i = consumedTime.iterator(); i.hasNext();) {
             final Period p = (Period) i.next();
             if (p.getStart().equals(date)) {
                 final VEvent occurrence = (VEvent) this.copy();
                 occurrence.getProperties().add(new RecurrenceId(date));
                 return occurrence;
             }
         }
         return null;
     }
     /**
      * @return the optional access classification property for an event
      */
     public final Clazz getClassification() {
         return (Clazz) getProperty(Property.CLASS);
     }
     /**
      * @return the optional creation-time property for an event
      */
     public final Created getCreated() {
         return (Created) getProperty(Property.CREATED);
     }
     /**
      * @return the optional description property for an event
      */
     public final Description getDescription() {
         return (Description) getProperty(Property.DESCRIPTION);
     }
     /**
      * Convenience method to pull the DTSTART out of the property list.
      * @return The DtStart object representation of the start Date
      */
     public final DtStart getStartDate() {
         return (DtStart) getProperty(Property.DTSTART);
     }
     /**
      * @return the optional geographic position property for an event
      */
     public final Geo getGeographicPos() {
         return (Geo) getProperty(Property.GEO);
     }
     /**
      * @return the optional last-modified property for an event
      */
     public final LastModified getLastModified() {
         return (LastModified) getProperty(Property.LAST_MODIFIED);
     }
     /**
      * @return the optional location property for an event
      */
     public final Location getLocation() {
         return (Location) getProperty(Property.LOCATION);
     }
     /**
      * @return the optional organizer property for an event
      */
     public final Organizer getOrganizer() {
         return (Organizer) getProperty(Property.ORGANIZER);
     }
     /**
      * @return the optional priority property for an event
      */
     public final Priority getPriority() {
         return (Priority) getProperty(Property.PRIORITY);
     }
     /**
      * @return the optional date-stamp property
      */
     public final DtStamp getDateStamp() {
         return (DtStamp) getProperty(Property.DTSTAMP);
     }
     /**
      * @return the optional sequence number property for an event
      */
     public final Sequence getSequence() {
         return (Sequence) getProperty(Property.SEQUENCE);
     }
     /**
      * @return the optional status property for an event
      */
     public final Status getStatus() {
         return (Status) getProperty(Property.STATUS);
     }
     /**
      * @return the optional summary property for an event
      */
     public final Summary getSummary() {
         return (Summary) getProperty(Property.SUMMARY);
     }
     /**
      * @return the optional time transparency property for an event
      */
     public final Transp getTransparency() {
         return (Transp) getProperty(Property.TRANSP);
     }
     /**
      * @return the optional URL property for an event
      */
     public final Url getUrl() {
         return (Url) getProperty(Property.URL);
     }
     /**
      * @return the optional recurrence identifier property for an event
      */
     public final RecurrenceId getRecurrenceId() {
         return (RecurrenceId) getProperty(Property.RECURRENCE_ID);
     }
     /**
      * Returns the end date of this event. Where an end date is not available it will be derived from the event
      * duration.
      * @return a DtEnd instance, or null if one cannot be derived
      */
     public final DtEnd getEndDate() {
         return getEndDate(true);
     }
     /**
      * Convenience method to pull the DTEND out of the property list. If DTEND was not specified, use the DTSTART +
      * DURATION to calculate it.
      * @param deriveFromDuration specifies whether to derive an end date from the event duration where an end date is
      * not found
      * @return The end for this VEVENT.
      */
     public final DtEnd getEndDate(final boolean deriveFromDuration) {
         DtEnd dtEnd = (DtEnd) getProperty(Property.DTEND);
         // No DTEND? No problem, we'll use the DURATION.
         if (dtEnd == null && deriveFromDuration && getStartDate() != null) {
             final DtStart dtStart = getStartDate();
             final Duration vEventDuration;
             if (getDuration() != null) {
                 vEventDuration = getDuration();
             } else if (dtStart.getDate() instanceof DateTime) {
                 // If "DTSTART" is a DATE-TIME, then the event's duration is zero (see: RFC 5545, 3.6.1 Event Component)
                 vEventDuration = new Duration(new Dur(0, 0, 0, 0));
             } else {
                 // If "DTSTART" is a DATE, then the event's duration is one day (see: RFC 5545, 3.6.1 Event Component)
                 vEventDuration = new Duration(new Dur(1, 0, 0, 0));
             }
             dtEnd = new DtEnd(Dates.getInstance(vEventDuration.getDuration()
                     .getTime(dtStart.getDate()), (Value) dtStart
                     .getParameter(Parameter.VALUE)));
             if (dtStart.isUtc()) {
                 dtEnd.setUtc(true);
             }
         }
         return dtEnd;
     }
     /**
      * @return the optional Duration property
      */
     public final Duration getDuration() {
         return (Duration) getProperty(Property.DURATION);
     }
     /**
      * Returns the UID property of this component if available.
      * @return a Uid instance, or null if no UID property exists
      */
     public final Uid getUid() {
         return (Uid) getProperty(Property.UID);
     }
     /**
      * {@inheritDoc}
      */
     public boolean equals(final Object arg0) {
         if (arg0 instanceof VEvent) {
             return super.equals(arg0)
                     && ObjectUtils.equals(alarms, ((VEvent) arg0).getAlarms());
         }
         return super.equals(arg0);
     }
     /**
      * {@inheritDoc}
      */
     public int hashCode() {
         return new HashCodeBuilder().append(getName()).append(getProperties())
                 .append(getAlarms()).toHashCode();
     }
     /**
      * Overrides default copy method to add support for copying alarm sub-components.
      * @return a copy of the instance
      * @throws ParseException where values in the instance cannot be parsed
      * @throws IOException where values in the instance cannot be read
      * @throws URISyntaxException where an invalid URI value is encountered in the instance
      * @see net.fortuna.ical4j.model.Component#copy()
      */
     public Component copy() throws ParseException, IOException,
             URISyntaxException {
         final VEvent copy = (VEvent) super.copy();
         copy.alarms = new ComponentList(alarms);
         return copy;
     }
 }

Caldavsync Sources / annotate

src/net/fortuna/ical4j/model/component/VEvent.java@73bdfa70b04e (annotated)

src/net/fortuna/ical4j/model/component/VEvent.java