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 verions.

Constructor Summary

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

InternalVersion	select(InternalVersionHistory versionHistory) Selects a version of the given version history.
Map<NodeId,InternalVersion>	versions() Returns the (modifiable) changeset of this selector. the keys of the map are the node ids of the version histories.

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. If the version is missing but dateFall

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.