org.apache.jackrabbit.core.version

Class VersionSet

java.lang.Object

org.apache.jackrabbit.core.version.VersionSet

All Implemented Interfaces:

VersionSelector

public class VersionSet
extends Object
implements VersionSelector

This Class implements a version selector that is based on a set of versions.

Constructor Summary

Constructors

Constructor and Description
VersionSet(Map<NodeId,InternalVersion> versions) Creates a ChangeSetVersionSelector that will try to select a version within the given set of versions.
VersionSet(Map<NodeId,InternalVersion> versions, boolean dateFallback) Creates a ChangeSetVersionSelector that will try to select a version in the given set.

Method Summary

Modifier and Type	Method and Description
InternalVersion	select(InternalVersionHistory versionHistory) Selects a version of the given version history.
Map<NodeId,InternalVersion>	versions() Returns the (modifiable) changeset of this selector.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

VersionSet

public VersionSet(Map<NodeId,InternalVersion> versions)

Creates a ChangeSetVersionSelector that will try to select a version within the given set of versions.

Parameters:

versions - the set of versions

VersionSet

public VersionSet(Map<NodeId,InternalVersion> versions,
                  boolean dateFallback)

Creates a ChangeSetVersionSelector that will try to select a version in the given set.

Parameters:

versions - the set of versions

dateFallback - if true date fallback is enabled.

Method Detail

versions

public Map<NodeId,InternalVersion> versions()

Returns the (modifiable) changeset of this selector. the keys of the map are the node ids of the version histories.

Returns:

the change set

select

public InternalVersion select(InternalVersionHistory versionHistory)
                       throws RepositoryException

Selects a version of the given version history. If this VersionSelector is unable to select one, it can return null. Please note, that a version selector is not allowed to return the root version. Selects a version from set having the given version history.

Specified by:

select in interface VersionSelector

Parameters:

versionHistory - version history to select a version from

Returns:

A version or null.

Throws:

RepositoryException - if an error occurs.