net.fortuna.ical4j.model.property
Class DtStart

java.lang.Object
  net.fortuna.ical4j.model.Content
      net.fortuna.ical4j.model.Property
          net.fortuna.ical4j.model.property.DateProperty
              net.fortuna.ical4j.model.property.DtStart

All Implemented Interfaces:

java.io.Serializable

public class DtStart
extends DateProperty

$Id: DtStart.java,v 1.24 2011/02/20 03:14:09 fortuna Exp $ Created: [Apr 6, 2004] Defines a DTSTART iCalendar component property.

     4.8.2.4 Date/Time Start
     
        Property Name: DTSTART
     
        Purpose: This property specifies when the calendar component begins.
     
        Value Type: The default value type is DATE-TIME. The time value MUST
        be one of the forms defined for the DATE-TIME value type. The value
        type can be set to a DATE value type.
     
        Property Parameters: Non-standard, value data type, time zone
        identifier property parameters can be specified on this property.
     
        Conformance: This property can be specified in the "VEVENT", "VTODO",
        "VFREEBUSY", or "VTIMEZONE" calendar components.
     
        Description: Within the "VEVENT" calendar component, this property
        defines the start date and time for the event. The property is
        REQUIRED in "VEVENT" calendar components. Events can have a start
        date/time but no end date/time. In that case, the event does not take
        up any time.
     
        Within the "VFREEBUSY" calendar component, this property defines the
        start date and time for the free or busy time information. The time
        MUST be specified in UTC time.
     
        Within the "VTIMEZONE" calendar component, this property defines the
        effective start date and time for a time zone specification. This
        property is REQUIRED within each STANDARD and DAYLIGHT part included
        in "VTIMEZONE" calendar components and MUST be specified as a local
        DATE-TIME without the "TZID" property parameter.
     
        Format Definition: The property is defined by the following notation:
     
          dtstart    = "DTSTART" dtstparam ":" dtstval CRLF
     
          dtstparam  = *(
     
                     ; the following are optional,
                     ; but MUST NOT occur more than once
     
                     (";" "VALUE" "=" ("DATE-TIME" / "DATE")) /
                     (";" tzidparam) /
     
                     ; the following is optional,
                     ; and MAY occur more than once
     
                       *(";" xparam)
     
                     )
     
     
     
          dtstval    = date-time / date
          ;Value MUST match value type
 

Author:

Ben Fortuna

See Also:

Serialized Form

Field Summary

Fields inherited from class net.fortuna.ical4j.model.Property

ACTION, ATTACH, ATTENDEE, BUSYTYPE, CALSCALE, CATEGORIES, CLASS, COMMENT, COMPLETED, CONTACT, COUNTRY, CREATED, DESCRIPTION, DTEND, DTSTAMP, DTSTART, DUE, DURATION, EXDATE, EXPERIMENTAL_PREFIX, EXRULE, EXTENDED_ADDRESS, FREEBUSY, GEO, LAST_MODIFIED, LOCALITY, LOCATION, LOCATION_TYPE, METHOD, NAME, ORGANIZER, PERCENT_COMPLETE, POSTALCODE, PRIORITY, PRODID, RDATE, RECURRENCE_ID, REGION, RELATED_TO, REPEAT, REQUEST_STATUS, RESOURCES, RRULE, SEQUENCE, STATUS, STREET_ADDRESS, SUMMARY, TEL, TRANSP, TRIGGER, TZID, TZNAME, TZOFFSETFROM, TZOFFSETTO, TZURL, UID, URL, VERSION

Constructor Summary

DtStart()
Default constructor.

DtStart(Date aDate)
Constructor.

DtStart(Date time, boolean utc)
Constructs a new DtStart with the specified time.

DtStart(ParameterList aList, Date aDate)
Constructor.

DtStart(ParameterList aList, java.lang.String aValue)

DtStart(java.lang.String aValue)

DtStart(java.lang.String value, TimeZone timezone)
Creates a new DTSTART property initialised with the specified timezone and value.

DtStart(TimeZone timezone)
Creates a new DTSTART property initialised with the specified timezone.

Method Summary

void	validate() Perform validation on a property.

Methods inherited from class net.fortuna.ical4j.model.property.DateProperty

copy, getDate, getTimeZone, getValue, isUtc, setDate, setTimeZone, setUtc, setValue

Methods inherited from class net.fortuna.ical4j.model.Property

equals, getName, getParameter, getParameters, getParameters, hashCode, isCalendarProperty, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DtStart

public DtStart()

Default constructor. The time value is initialised to the time of instantiation.

DtStart

public DtStart(TimeZone timezone)

Creates a new DTSTART property initialised with the specified timezone.

Parameters:

timezone - initial timezone

DtStart

public DtStart(java.lang.String aValue)
        throws java.text.ParseException

Parameters:

aValue - a value string for this component

Throws:

java.text.ParseException - where the specified value string is not a valid date-time/date representation

DtStart

public DtStart(java.lang.String value,
               TimeZone timezone)
        throws java.text.ParseException

Creates a new DTSTART property initialised with the specified timezone and value.

Parameters:

value - a string representation of a DTSTART value

timezone - initial timezone

Throws:

java.text.ParseException - where the specified value is not a valid string representation

DtStart

public DtStart(ParameterList aList,
               java.lang.String aValue)
        throws java.text.ParseException

Parameters:

aList - a list of parameters for this component

aValue - a value string for this component

Throws:

java.text.ParseException - where the specified value string is not a valid date-time/date representation

DtStart

public DtStart(Date aDate)

Constructor. Date or Date-Time format is determined based on the presence of a VALUE parameter.

Parameters:

aDate - a date

DtStart

public DtStart(Date time,
               boolean utc)

Constructs a new DtStart with the specified time.

Parameters:

time - the time of the DtStart

utc - specifies whether time is UTC

DtStart

public DtStart(ParameterList aList,
               Date aDate)

Constructor. Date or Date-Time format is determined based on the presence of a VALUE parameter.

Parameters:

aList - a list of parameters for this component

aDate - a date

Method Detail

validate

public final void validate()
                    throws ValidationException

Perform validation on a property.

Overrides:

validate in class DateProperty

Throws:

ValidationException - where the property is not in a valid state