/*
* JBoss, a division of Red Hat
* Copyright 2011, Red Hat Middleware, LLC, and individual
* contributors as indicated by the @authors tag. See the
* copyright.txt in the distribution for a full listing of
* individual contributors.
*
* 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.gatein.wsrp.consumer.migration;
import org.chromattic.api.ChromatticSession;
import org.gatein.common.util.ParameterValidation;
import org.gatein.wsrp.api.context.ConsumerStructureProvider;
import org.gatein.wsrp.consumer.migration.mapping.ExportErrorMapping;
import org.gatein.wsrp.consumer.migration.mapping.ExportInfoMapping;
import org.gatein.wsrp.consumer.migration.mapping.ExportInfosMapping;
import org.gatein.wsrp.consumer.migration.mapping.ExportedStateMapping;
import org.gatein.wsrp.jcr.ChromatticPersister;
import org.gatein.wsrp.jcr.StoresByPathManager;
import org.gatein.wsrp.jcr.mapping.mixins.LastModified;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* JCR-backed (via Chromattic) persistent implementation of MigrationService.
*
* @author <a href="mailto:chris.laprun@jboss.com">Chris Laprun</a>
* @version $Revision$
*/
public class JCRMigrationService implements MigrationService, StoresByPathManager<ExportInfo>
{
private ConsumerStructureProvider structureProvider;
private ChromatticPersister persister;
private static final String EXPORT_INFOS_PATH = ExportInfosMapping.NODE_NAME;
private int exportInfosCount = -1;
public static final List<Class> mappingClasses = new ArrayList<Class>(4);
static
{
Collections.addAll(mappingClasses, ExportInfosMapping.class, ExportInfoMapping.class, ExportedStateMapping.class,
ExportErrorMapping.class);
}
public JCRMigrationService(ChromatticPersister persister) throws Exception
{
this.persister = persister;
}
public ConsumerStructureProvider getStructureProvider()
{
return structureProvider;
}
public void setStructureProvider(ConsumerStructureProvider structureProvider)
{
ParameterValidation.throwIllegalArgExceptionIfNull(structureProvider, "PortalStructureProvider");
this.structureProvider = structureProvider;
}
public List<ExportInfo> getAvailableExportInfos()
{
try
{
ChromatticSession session = persister.getSession();
ExportInfosMapping exportInfosMapping = getExportInfosMapping(session);
List<ExportInfoMapping> exportInfoMappings = exportInfosMapping.getExportInfos();
List<ExportInfo> exportInfos = new ArrayList<ExportInfo>(exportInfoMappings.size());
for (ExportInfoMapping eim : exportInfoMappings)
{
exportInfos.add(eim.toModel(null, null));
}
exportInfosCount = exportInfos.size();
return exportInfos;
}
finally
{
persister.closeSession(false);
}
}
private ExportInfosMapping getExportInfosMapping(ChromatticSession session)
{
ExportInfosMapping exportInfosMapping = session.findByPath(ExportInfosMapping.class, ExportInfosMapping.NODE_NAME);
if (exportInfosMapping == null)
{
exportInfosMapping = session.insert(ExportInfosMapping.class, ExportInfosMapping.NODE_NAME);
exportInfosCount = 0;
}
return exportInfosMapping;
}
public ExportInfo getExportInfo(long exportTime)
{
try
{
ChromatticSession session = persister.getSession();
ExportInfoMapping eim = session.findByPath(ExportInfoMapping.class, getPathFor(exportTime));
if (eim != null)
{
return eim.toModel(null, null);
}
else
{
return null;
}
}
finally
{
persister.closeSession(false);
}
}
public void add(ExportInfo info)
{
try
{
ChromatticSession session = persister.getSession();
ExportInfoMapping eim = session.findByPath(ExportInfoMapping.class, getChildPath(info));
long exportTime = info.getExportTime();
if (eim != null)
{
throw new IllegalArgumentException("An ExportInfo with export time "
+ exportTime + " already exists!");
}
else
{
ExportInfosMapping exportInfosMapping = getExportInfosMapping(session);
String exportTimeAsString = "" + exportTime;
ExportInfoMapping exportInfo = exportInfosMapping.createExportInfo(exportTimeAsString);
session.persist(exportInfosMapping, exportInfo, exportTimeAsString);
exportInfo.initFrom(info);
persister.save();
exportInfosCount++;
}
}
finally
{
persister.closeSession(false);
}
}
public ExportInfo remove(ExportInfo info)
{
if (persister.delete(info, this))
{
exportInfosCount--;
return info;
}
else
{
return null;
}
}
public boolean isAvailableExportInfosEmpty()
{
if (exportInfosCount == -1)
{
try
{
ChromatticSession session = persister.getSession();
ExportInfosMapping mappings = getExportInfosMapping(session);
exportInfosCount = mappings.getExportInfos().size();
}
finally
{
persister.closeSession(false);
}
}
return exportInfosCount == 0;
}
public String getParentPath()
{
return EXPORT_INFOS_PATH;
}
public String getChildPath(ExportInfo exportInfo)
{
return getPathFor(exportInfo.getExportTime());
}
public LastModified lastModifiedToUpdateOnDelete(ChromatticSession session)
{
return null;
}
private String getPathFor(final long exportTime)
{
return getParentPath() + "/" + exportTime;
}
}