net.fortuna.ical4j.model

Class PeriodList<T extends Temporal>

java.lang.Object

net.fortuna.ical4j.model.PeriodList<T>

All Implemented Interfaces:

Serializable

public class PeriodList<T extends Temporal>
extends Object
implements Serializable

$Id$ [23-Apr-2004] Defines a list of iCalendar periods. This class encapsulates a collection of naturally sorted periods that SHOULD conform to a common set of rules, including temporal type, applicable timezone and string representation (format). Results for a consumed time query will have the same temporal type, format type and (where applicable) timezone as the event start date. Results for a free-busy query will always be defined in UTC time (i.e. using temporal type Instant) NOTE: By implementing the java.util.SortedSet interface period lists will always be sorted according to natural ordering.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PeriodList() Default constructor.
PeriodList(CalendarDateFormat dateFormat)
PeriodList(Collection<Period<T>> periods)
PeriodList(Collection<Period<T>> periods, CalendarDateFormat dateFormat)

Method Summary

Modifier and Type	Method and Description
boolean	add(Period<T> period) Add a period to the list.
PeriodList<T>	add(PeriodList<T> periods) A convenience method that combines all the periods in the specified list to this list.
boolean	addAll(Collection<Period<T>> arg0)
boolean	equals(Object obj)
Set<Period<T>>	getPeriods()
int	hashCode()
boolean	isEmpty()
PeriodList<T>	normalise() Returns a normalised version of this period list.
static PeriodList	parse(String aValue) Parses the specified string representation to create a list of periods.
boolean	remove(Object period) Remove a period from the list.
PeriodList<T>	subtract(PeriodList<T> subtractions) Subtracts the intersection of this list with the specified list of periods from this list and returns the results as a new period list.
String	toString()
String	toString(ZoneId zoneId)

Methods inherited from class java.lang.Object

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

Constructor Detail

PeriodList

public PeriodList()

Default constructor.

PeriodList

public PeriodList(CalendarDateFormat dateFormat)

PeriodList

public PeriodList(Collection<Period<T>> periods)

PeriodList

public PeriodList(Collection<Period<T>> periods,
                  CalendarDateFormat dateFormat)

Method Detail

parse

public static PeriodList parse(String aValue)

Parses the specified string representation to create a list of periods.

Parameters:

aValue - a string representation of a list of periods

Throws:

DateTimeParseException - thrown when an invalid string representation of a period list is provided

toString

public String toString()

Overrides:

toString in class Object

toString

public String toString(ZoneId zoneId)

add

public final boolean add(Period<T> period)

Add a period to the list.

Parameters:

period - the period to add

Returns:

true

See Also:

List.add(java.lang.Object)

remove

public final boolean remove(Object period)

Remove a period from the list.

Parameters:

period - the period to remove

Returns:

true if the list contained the specified period

See Also:

List.remove(java.lang.Object)

normalise

public final PeriodList<T> normalise()

Returns a normalised version of this period list. Normalisation includes combining overlapping periods, removing periods contained by other periods, combining adjacent periods, and removing periods that consume no time. NOTE: If the period list is already normalised then this period list is returned.

Returns:

a period list

add

public final PeriodList<T> add(PeriodList<T> periods)

A convenience method that combines all the periods in the specified list to this list. The result returned is a new PeriodList instance, except where no periods are specified in the arguments. In such cases this instance is returned. Normalisation is also performed automatically after all periods have been added.

Parameters:

periods - a list of periods to add

Returns:

a period list instance

subtract

public final PeriodList<T> subtract(PeriodList<T> subtractions)

Subtracts the intersection of this list with the specified list of periods from this list and returns the results as a new period list. If no intersection is identified this list is returned.

Parameters:

subtractions - a list of periods to subtract from this list

Returns:

a period list

getPeriods

public Set<Period<T>> getPeriods()

addAll

public boolean addAll(Collection<Period<T>> arg0)

isEmpty

public boolean isEmpty()

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object