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See:
Description
Interface Summary | |
---|---|
InternalFreeze | the base interface for nodes that were versioned and turned either into InternalFrozenNode or InteralFrozenVersionHistory. |
InternalFrozenNode | The InternalFrozenNode interface represents the frozen node that was generated
during a Node.checkin() . |
InternalFrozenVersionHistory | This interface defines a frozen versionable child node, that was created
during a Node.checkin() with a OPV==Version node. |
InternalVersion | This interface defines the internal version. |
InternalVersionHistory | This interface defines the internal version history. |
InternalVersionItem | This interface defines the base for all internal versioning items. |
VersionManager | This interface defines the version manager. |
VersionSelector | This Interface defines the version selector that needs to provide a version, given some hints and a version history. the selector is used in the various restore methods in order to select the correct version of previously versioned OPV=Version children upon restore. |
Class Summary | |
---|---|
DateVersionSelector | This Class implements a version selector that selects a version by creation date. |
FrozenNodeIteratorAdapter | Implements a node iterator that takes a version iterator and returns the frozen nodes of the underlying versions. |
JcrVersionManagerImpl | Implementation of the VersionManager . |
LabelVersionSelector | This Class implements a version selector that selects a version by label. |
NodeStateEx | This Class provides some basic node operations directly on the node state. |
VersionHistoryImpl | Base implementation of the VersionHistory interface. |
VersionHistoryInfo | Simple data object that carries the identifiers of a version history node and the related root version node. |
VersionImpl | Base implementation of the Version interface. |
VersionItemStateManager | Spezialized SharedItemStateManager that filters out NodeReferences to non-versioning states. |
VersionManagerImpl | This Class implements a VersionManager. |
VersionManagerImpl.DynamicESCFactory | |
XAVersionManager | Implementation of a VersionManager that works in an XA environment. |
The versioning framework in jackrabbit consists of 3 layers. A persistence layer, an application layer and an presentation layer.
The persistence layer uses a 'normal' workspace as storage. The storage can later
be exchanged by a more scaleable one. The application layer operates on the
persistent one and provides the internal view of the version storage. It is
manifested through the InternalVersion
and
InternalVersionHistory
objects.
The internal versions are also mapped to the content and exposed through the
API (i.e. the Version
extends Node
and can be inspected
with normal Node methods). Furthermore the version store is also exposed below
/jcr:system/jcr:versionStorage
. The exact structure of it is not
defined yet, so applications should not relay on it and rather use
Node.getVersionHistory()
to access a particular version history or
use the search mechanisms to find the respective versions.
The presentation layer is managed by the VersionManager
. it is
responsible for mapping the version storage to the content.
Open issues:
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