net.fortuna.ical4j.model.component
Class VEvent

java.lang.Object
  extended by net.fortuna.ical4j.model.Component
      extended by net.fortuna.ical4j.model.component.CalendarComponent
          extended by net.fortuna.ical4j.model.component.VEvent
All Implemented Interfaces:
Serializable

public class VEvent
extends CalendarComponent

$Id$ [Apr 5, 2004] Defines an iCalendar VEVENT component.

       4.6.1 Event Component
   
          Component Name: "VEVENT"
   
          Purpose: Provide a grouping of component properties that describe an
          event.
   
          Format Definition: A "VEVENT" calendar component is defined by the
          following notation:
   
            eventc     = "BEGIN" ":" "VEVENT" CRLF
                         eventprop *alarmc
                         "END" ":" "VEVENT" 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
   
                       )
 
Example 1 - Creating a new all-day event:

 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(), "Christmas Day");
 
 // 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);
 
Example 2 - Creating an event of one (1) hour duration:

 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, "Progress Meeting");
 
 // 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);
 
Example 3 - Retrieve a list of periods representing a recurring event in a specified range:

 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("TEST EVENTS THAT HAPPEN 9-5 MON-FRI");
 
 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());
 

Author:
Ben Fortuna
See Also:
Serialized Form

Field Summary
 
Fields inherited from class net.fortuna.ical4j.model.component.CalendarComponent
EMPTY_VALIDATOR
 
Fields inherited from class net.fortuna.ical4j.model.Component
AVAILABLE, BEGIN, END, EXPERIMENTAL_PREFIX, VALARM, VAVAILABILITY, VEVENT, VFREEBUSY, VJOURNAL, VTIMEZONE, VTODO, VVENUE
 
Constructor Summary
VEvent()
          Default constructor.
VEvent(Date start, Date end, String summary)
          Constructs a new VEVENT instance starting and ending at the specified times with the specified summary.
VEvent(Date start, Dur duration, String summary)
          Constructs a new VEVENT instance starting at the specified times, for the specified duration, with the specified summary.
VEvent(Date start, String summary)
          Constructs a new VEVENT instance starting at the specified time with the specified summary.
VEvent(PropertyList properties)
          Constructor.
VEvent(PropertyList properties, ComponentList alarms)
          Constructor.
 
Method Summary
 Component copy()
          Overrides default copy method to add support for copying alarm sub-components.
 boolean equals(Object arg0)
          
 ComponentList getAlarms()
          Returns the list of alarms for this event.
 Clazz getClassification()
           
 PeriodList getConsumedTime(Date rangeStart, Date rangeEnd)
          Returns a normalised list of periods representing the consumed time for this event.
 PeriodList getConsumedTime(Date rangeStart, Date rangeEnd, boolean normalise)
          Returns a list of periods representing the consumed time for this event in the specified range.
 Created getCreated()
           
 DtStamp getDateStamp()
           
 Description getDescription()
           
 Duration getDuration()
           
 DtEnd getEndDate()
          Returns the end date of this event.
 DtEnd getEndDate(boolean deriveFromDuration)
          Convenience method to pull the DTEND out of the property list.
 Geo getGeographicPos()
           
 LastModified getLastModified()
           
 Location getLocation()
           
 VEvent getOccurrence(Date date)
          Returns a single occurrence of a recurring event.
 Organizer getOrganizer()
           
 Priority getPriority()
           
 RecurrenceId getRecurrenceId()
           
 Sequence getSequence()
           
 DtStart getStartDate()
          Convenience method to pull the DTSTART out of the property list.
 Status getStatus()
           
 Summary getSummary()
           
 Transp getTransparency()
           
 Uid getUid()
          Returns the UID property of this component if available.
 Url getUrl()
           
protected  Validator getValidator(Method method)
          
 int hashCode()
          
 String toString()
          
 void validate(boolean recurse)
          Perform validation on a component.
 
Methods inherited from class net.fortuna.ical4j.model.component.CalendarComponent
validate, validateAdd, validateCancel, validateCounter, validateDeclineCounter, validatePublish, validateRefresh, validateReply, validateRequest
 
Methods inherited from class net.fortuna.ical4j.model.Component
calculateRecurrenceSet, getName, getProperties, getProperties, getProperty, validate, validateProperties
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Constructor Detail

VEvent

public VEvent()
Default constructor.


VEvent

public VEvent(PropertyList properties)
Constructor.

Parameters:
properties - a list of properties

VEvent

public VEvent(PropertyList properties,
              ComponentList alarms)
Constructor.

Parameters:
properties - a list of properties
alarms - a list of alarms

VEvent

public VEvent(Date start,
              String summary)
Constructs a new VEVENT instance starting at the specified time with the specified summary.

Parameters:
start - the start date of the new event
summary - the event summary

VEvent

public VEvent(Date start,
              Date end,
              String summary)
Constructs a new VEVENT instance starting and ending at the specified times with the specified summary.

Parameters:
start - the start date of the new event
end - the end date of the new event
summary - the event summary

VEvent

public VEvent(Date start,
              Dur duration,
              String summary)
Constructs a new VEVENT instance starting at the specified times, for the specified duration, with the specified summary.

Parameters:
start - the start date of the new event
duration - the duration of the new event
summary - the event summary
Method Detail

getAlarms

public final ComponentList getAlarms()
Returns the list of alarms for this event.

Returns:
a component list

toString

public final String toString()

Overrides:
toString in class Component

validate

public final void validate(boolean recurse)
                    throws ValidationException
Perform validation on a component.

Specified by:
validate in class Component
Parameters:
recurse - indicates whether to validate the component's properties
Throws:
ValidationException - where the component is not in a valid state

getValidator

protected Validator getValidator(Method method)

Specified by:
getValidator in class CalendarComponent
Parameters:
method - a method to validate on
Returns:
a validator for the specified method or null if the method is not supported

getConsumedTime

public final PeriodList getConsumedTime(Date rangeStart,
                                        Date rangeEnd)
Returns a normalised list of periods representing the consumed time for this event.

Parameters:
rangeStart - the start of a range
rangeEnd - the end of a range
Returns:
a normalised list of periods representing consumed time for this event
See Also:
getConsumedTime(Date, Date, boolean)

getConsumedTime

public final PeriodList getConsumedTime(Date rangeStart,
                                        Date rangeEnd,
                                        boolean normalise)
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.

Parameters:
rangeStart - the start of the range to check for consumed time
rangeEnd - the end of the range to check for consumed time
normalise - indicate whether the returned list of periods should be normalised
Returns:
a list of periods representing consumed time for this event

getOccurrence

public final VEvent getOccurrence(Date date)
                           throws IOException,
                                  URISyntaxException,
                                  ParseException
Returns a single occurrence of a recurring event.

Parameters:
date - a date on which the occurence should occur
Returns:
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
URISyntaxException - where an invalid URI is encountered
ParseException - where an error occurs parsing data

getClassification

public final Clazz getClassification()
Returns:
the optional access classification property for an event

getCreated

public final Created getCreated()
Returns:
the optional creation-time property for an event

getDescription

public final Description getDescription()
Returns:
the optional description property for an event

getStartDate

public final DtStart getStartDate()
Convenience method to pull the DTSTART out of the property list.

Returns:
The DtStart object representation of the start Date

getGeographicPos

public final Geo getGeographicPos()
Returns:
the optional geographic position property for an event

getLastModified

public final LastModified getLastModified()
Returns:
the optional last-modified property for an event

getLocation

public final Location getLocation()
Returns:
the optional location property for an event

getOrganizer

public final Organizer getOrganizer()
Returns:
the optional organizer property for an event

getPriority

public final Priority getPriority()
Returns:
the optional priority property for an event

getDateStamp

public final DtStamp getDateStamp()
Returns:
the optional date-stamp property

getSequence

public final Sequence getSequence()
Returns:
the optional sequence number property for an event

getStatus

public final Status getStatus()
Returns:
the optional status property for an event

getSummary

public final Summary getSummary()
Returns:
the optional summary property for an event

getTransparency

public final Transp getTransparency()
Returns:
the optional time transparency property for an event

getUrl

public final Url getUrl()
Returns:
the optional URL property for an event

getRecurrenceId

public final RecurrenceId getRecurrenceId()
Returns:
the optional recurrence identifier property for an event

getEndDate

public final DtEnd getEndDate()
Returns the end date of this event. Where an end date is not available it will be derived from the event duration.

Returns:
a DtEnd instance, or null if one cannot be derived

getEndDate

public final DtEnd getEndDate(boolean deriveFromDuration)
Convenience method to pull the DTEND out of the property list. If DTEND was not specified, use the DTSTART + DURATION to calculate it.

Parameters:
deriveFromDuration - specifies whether to derive an end date from the event duration where an end date is not found
Returns:
The end for this VEVENT.

getDuration

public final Duration getDuration()
Returns:
the optional Duration property

getUid

public final Uid getUid()
Returns the UID property of this component if available.

Returns:
a Uid instance, or null if no UID property exists

equals

public boolean equals(Object arg0)

Overrides:
equals in class Component

hashCode

public int hashCode()

Overrides:
hashCode in class Component

copy

public Component copy()
               throws ParseException,
                      IOException,
                      URISyntaxException
Overrides default copy method to add support for copying alarm sub-components.

Overrides:
copy in class Component
Returns:
a copy of the instance
Throws:
ParseException - where values in the instance cannot be parsed
IOException - where values in the instance cannot be read
URISyntaxException - where an invalid URI value is encountered in the instance
See Also:
Component.copy()


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