/*
* Copyright (C) 2009 eXo Platform SAS.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.services.jcr.impl.core.version;
import org.exoplatform.services.jcr.dataflow.DataManager;
import org.exoplatform.services.jcr.dataflow.ItemState;
import org.exoplatform.services.jcr.dataflow.PlainChangesLog;
import org.exoplatform.services.jcr.datamodel.Identifier;
import org.exoplatform.services.jcr.datamodel.InternalQName;
import org.exoplatform.services.jcr.datamodel.NodeData;
import org.exoplatform.services.jcr.datamodel.PropertyData;
import org.exoplatform.services.jcr.datamodel.QPath;
import org.exoplatform.services.jcr.datamodel.QPathEntry;
import org.exoplatform.services.jcr.datamodel.ValueData;
import org.exoplatform.services.jcr.impl.Constants;
import org.exoplatform.services.jcr.impl.core.SessionImpl;
import org.exoplatform.services.jcr.impl.dataflow.TransientPropertyData;
import org.exoplatform.services.jcr.impl.dataflow.TransientValueData;
import org.exoplatform.services.jcr.impl.dataflow.session.SessionChangesLog;
import org.exoplatform.services.jcr.impl.dataflow.version.VersionHistoryDataHelper;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
import javax.jcr.PathNotFoundException;
import javax.jcr.PropertyType;
import javax.jcr.RepositoryException;
import javax.jcr.Value;
import javax.jcr.version.Version;
import javax.jcr.version.VersionException;
/**
* Created by The eXo Platform SAS.
*
* @author Gennady Azarenkov
* @version $Id: VersionImpl.java 12311 2008-03-24 12:30:51Z pnedonosko $
*/
public class VersionImpl extends VersionStorageDescendantNode implements Version
{
public VersionImpl(NodeData data, SessionImpl session) throws PathNotFoundException, RepositoryException
{
super(data, session);
if (!this.isNodeType(Constants.NT_VERSION))
throw new RepositoryException("Node " + getLocation().getAsString(true) + " is not nt:version type");
}
@Override
protected void invalidate()
{
super.invalidate();
}
/**
* {@inheritDoc}
*/
public Calendar getCreated() throws RepositoryException
{
checkValid();
PropertyData pdata = (PropertyData)dataManager.getItemData(nodeData(), new QPathEntry(Constants.JCR_CREATED, 0));
if (pdata == null)
throw new VersionException("jcr:created property is not found for version " + getPath());
Value created =
session.getValueFactory().loadValue((TransientValueData)pdata.getValues().get(0), pdata.getType());
return created.getDate();
}
/**
* {@inheritDoc}
*/
public Version[] getSuccessors() throws RepositoryException
{
checkValid();
PropertyData successorsData =
(PropertyData)dataManager.getItemData(nodeData(), new QPathEntry(Constants.JCR_SUCCESSORS, 0));
if (successorsData == null)
return new Version[0];
List<ValueData> successorsValues = successorsData.getValues();
Version[] successors = new Version[successorsValues.size()];
try
{
for (int i = 0; i < successorsValues.size(); i++)
{
String videntifier = new String(successorsValues.get(i).getAsByteArray());
VersionImpl version = (VersionImpl)dataManager.getItemByIdentifier(videntifier, true);
if (version != null)
successors[i] = version;
else
throw new RepositoryException("Successor version is not found " + videntifier + ", this version "
+ getPath());
}
}
catch (IOException e)
{
throw new RepositoryException("Successor value read error " + e, e);
}
return successors;
}
/**
* {@inheritDoc}
*/
public Version[] getPredecessors() throws RepositoryException
{
checkValid();
PropertyData predecessorsData =
(PropertyData)dataManager.getItemData(nodeData(), new QPathEntry(Constants.JCR_PREDECESSORS, 0));
if (predecessorsData == null)
return new Version[0];
List<ValueData> predecessorsValues = predecessorsData.getValues();
Version[] predecessors = new Version[predecessorsValues.size()];
try
{
for (int i = 0; i < predecessorsValues.size(); i++)
{
String videntifier = new String(predecessorsValues.get(i).getAsByteArray());
VersionImpl version = (VersionImpl)dataManager.getItemByIdentifier(videntifier, false);
if (version != null)
predecessors[i] = version;
else
throw new RepositoryException("Predecessor version is not found " + videntifier + ", this version "
+ getPath());
}
}
catch (IOException e)
{
throw new RepositoryException("Predecessor value read error " + e, e);
}
return predecessors;
}
public void addSuccessor(String successorIdentifier, PlainChangesLog changesLog) throws RepositoryException
{
ValueData successorRef = new TransientValueData(new Identifier(successorIdentifier));
TransientPropertyData successorsProp =
(TransientPropertyData)dataManager.getItemData(nodeData(), new QPathEntry(Constants.JCR_SUCCESSORS, 0));
if (successorsProp == null)
{
// create a property now
List<ValueData> successors = new ArrayList<ValueData>();
successors.add(successorRef);
successorsProp =
TransientPropertyData.createPropertyData(nodeData(), Constants.JCR_SUCCESSORS, PropertyType.REFERENCE,
true, successors);
changesLog.add(ItemState.createAddedState(successorsProp));
}
else
{
// add successor in existed one
TransientPropertyData newSuccessorsProp = successorsProp.clone();
newSuccessorsProp.getValues().add(successorRef);
changesLog.add(ItemState.createUpdatedState(newSuccessorsProp));
}
}
public void addPredecessor(String predeccessorIdentifier, PlainChangesLog changesLog) throws RepositoryException
{
ValueData predeccessorRef = new TransientValueData(new Identifier(predeccessorIdentifier));
TransientPropertyData predeccessorsProp =
(TransientPropertyData)dataManager.getItemData(nodeData(), new QPathEntry(Constants.JCR_PREDECESSORS, 0));
if (predeccessorsProp == null)
{
List<ValueData> predeccessors = new ArrayList<ValueData>();
predeccessors.add(predeccessorRef);
predeccessorsProp =
TransientPropertyData.createPropertyData(nodeData(), Constants.JCR_PREDECESSORS, PropertyType.REFERENCE,
true, predeccessors);
changesLog.add(ItemState.createAddedState(predeccessorsProp));
}
else
{
// add successor in existed one
TransientPropertyData newPredeccessorsProp = predeccessorsProp.clone();
newPredeccessorsProp.getValues().add(predeccessorRef);
changesLog.add(ItemState.createUpdatedState(newPredeccessorsProp));
}
}
void removeSuccessor(String successorIdentifier, PlainChangesLog changesLog) throws RepositoryException
{
TransientPropertyData successorsProp =
(TransientPropertyData)dataManager.getItemData(nodeData(), new QPathEntry(Constants.JCR_SUCCESSORS, 0));
if (successorsProp != null)
{
List<ValueData> newSuccessors = new ArrayList<ValueData>();
try
{
for (ValueData sdata : successorsProp.getValues())
{
if (!successorIdentifier.equals(new String(sdata.getAsByteArray())))
newSuccessors.add(sdata);
}
}
catch (IOException e)
{
throw new RepositoryException("A jcr:successors property read error " + e, e);
}
TransientPropertyData newSuccessorsProp =
new TransientPropertyData(QPath.makeChildPath(nodeData().getQPath(), Constants.JCR_SUCCESSORS,
successorsProp.getQPath().getIndex()), successorsProp.getIdentifier(), successorsProp
.getPersistedVersion(), PropertyType.REFERENCE, nodeData().getIdentifier(), true);
newSuccessorsProp.setValues(newSuccessors);
changesLog.add(ItemState.createUpdatedState(newSuccessorsProp));
}
else
{
throw new RepositoryException("A jcr:successors property is not found, version " + getPath());
}
}
void removeAddSuccessor(String removedSuccessorIdentifier, String addedSuccessorIdentifier,
PlainChangesLog changesLog) throws RepositoryException
{
TransientPropertyData successorsProp =
(TransientPropertyData)dataManager.getItemData(nodeData(), new QPathEntry(Constants.JCR_SUCCESSORS, 0));
if (successorsProp != null)
{
List<ValueData> newSuccessors = new ArrayList<ValueData>();
try
{
for (ValueData sdata : successorsProp.getValues())
{
if (!removedSuccessorIdentifier.equals(new String(sdata.getAsByteArray())))
newSuccessors.add(sdata);
}
}
catch (IOException e)
{
throw new RepositoryException("A jcr:successors property read error " + e, e);
}
newSuccessors.add(new TransientValueData(new Identifier(addedSuccessorIdentifier)));
TransientPropertyData newSuccessorsProp =
new TransientPropertyData(QPath.makeChildPath(nodeData().getQPath(), Constants.JCR_SUCCESSORS,
successorsProp.getQPath().getIndex()), successorsProp.getIdentifier(), successorsProp
.getPersistedVersion(), PropertyType.REFERENCE, nodeData().getIdentifier(), true);
newSuccessorsProp.setValues(newSuccessors);
changesLog.add(ItemState.createUpdatedState(newSuccessorsProp));
}
else
{
throw new RepositoryException("A jcr:successors property is not found, version " + getPath());
}
}
void removePredecessor(String predecessorIdentifier, PlainChangesLog changesLog) throws RepositoryException
{
TransientPropertyData predeccessorsProp =
(TransientPropertyData)dataManager.getItemData(nodeData(), new QPathEntry(Constants.JCR_PREDECESSORS, 0));
if (predeccessorsProp != null)
{
List<ValueData> newPredeccessors = new ArrayList<ValueData>();
try
{
for (ValueData sdata : predeccessorsProp.getValues())
{
if (!predecessorIdentifier.equals(new String(sdata.getAsByteArray())))
newPredeccessors.add(sdata);
}
}
catch (IOException e)
{
throw new RepositoryException("A jcr:predecessors property read error " + e, e);
}
TransientPropertyData newPredecessorsProp =
new TransientPropertyData(QPath.makeChildPath(nodeData().getQPath(), Constants.JCR_PREDECESSORS,
predeccessorsProp.getQPath().getIndex()), predeccessorsProp.getIdentifier(), predeccessorsProp
.getPersistedVersion(), PropertyType.REFERENCE, nodeData().getIdentifier(), true);
newPredecessorsProp.setValues(newPredeccessors);
changesLog.add(ItemState.createUpdatedState(newPredecessorsProp));
}
else
{
throw new RepositoryException("A jcr:predecessors property is not found, version " + getPath());
}
}
void removeAddPredecessor(String removedPredecessorIdentifier, String addedPredecessorIdentifier,
PlainChangesLog changesLog) throws RepositoryException
{
TransientPropertyData predeccessorsProp =
(TransientPropertyData)dataManager.getItemData(nodeData(), new QPathEntry(Constants.JCR_PREDECESSORS, 0));
if (predeccessorsProp != null)
{
List<ValueData> newPredeccessors = new ArrayList<ValueData>();
try
{
for (ValueData sdata : predeccessorsProp.getValues())
{
if (!removedPredecessorIdentifier.equals(new String(sdata.getAsByteArray())))
newPredeccessors.add(sdata);
}
}
catch (IOException e)
{
throw new RepositoryException("A jcr:predecessors property read error " + e, e);
}
newPredeccessors.add(new TransientValueData(new Identifier(addedPredecessorIdentifier)));
TransientPropertyData newPredecessorsProp =
new TransientPropertyData(QPath.makeChildPath(nodeData().getQPath(), Constants.JCR_PREDECESSORS,
predeccessorsProp.getQPath().getIndex()), predeccessorsProp.getIdentifier(), predeccessorsProp
.getPersistedVersion(), PropertyType.REFERENCE, nodeData().getIdentifier(), true);
newPredecessorsProp.setValues(newPredeccessors);
changesLog.add(ItemState.createUpdatedState(newPredecessorsProp));
}
else
{
throw new RepositoryException("A jcr:predecessors property is not found, version " + getPath());
}
}
/**
* {@inheritDoc}
*/
public VersionHistoryImpl getContainingHistory() throws RepositoryException
{
checkValid();
VersionHistoryImpl vhistory =
(VersionHistoryImpl)dataManager.getItemByIdentifier(nodeData().getParentIdentifier(), true);
if (vhistory == null)
throw new VersionException("Version history item is not found for version " + getPath());
return vhistory;
}
public SessionChangesLog restoreLog(NodeData destParent, InternalQName name, VersionHistoryDataHelper historyData,
SessionImpl restoreSession, boolean removeExisting, SessionChangesLog delegatedLog) throws RepositoryException
{
if (LOG.isDebugEnabled())
LOG.debug("Restore on parent " + destParent.getQPath().getAsString() + " as " + name.getAsString()
+ ", removeExisting=" + removeExisting);
DataManager dmanager = restoreSession.getTransientNodesManager().getTransactManager();
NodeData frozenData = (NodeData)dmanager.getItemData(nodeData(), new QPathEntry(Constants.JCR_FROZENNODE, 1));
ItemDataRestoreVisitor restoreVisitor =
new ItemDataRestoreVisitor(destParent, name, historyData, restoreSession, removeExisting, delegatedLog);
frozenData.accept(restoreVisitor);
return restoreVisitor.getRestoreChanges();
}
public void restore(SessionImpl restoreSession, NodeData destParent, InternalQName name, boolean removeExisting)
throws RepositoryException
{
DataManager dmanager = restoreSession.getTransientNodesManager().getTransactManager();
NodeData vh = (NodeData)dmanager.getItemData(nodeData().getParentIdentifier()); // version
// parent it's a VH
VersionHistoryDataHelper historyHelper =
new VersionHistoryDataHelper(vh, dmanager, session.getWorkspace().getNodeTypesHolder());
SessionChangesLog changesLog = restoreLog(destParent, name, historyHelper, restoreSession, removeExisting, null);
dmanager.save(changesLog);
}
public boolean isSuccessorOrSameOf(VersionImpl anotherVersion) throws RepositoryException
{
Version[] prds = getPredecessors();
for (int i = 0; i < prds.length; i++)
{
if (prds[i].getUUID().equals(anotherVersion.getUUID())
|| ((VersionImpl)prds[i]).isSuccessorOrSameOf(anotherVersion))
return true;
}
return false;
}
}