/*
* 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.storage.value.fs;
import org.exoplatform.services.jcr.datamodel.ValueData;
import org.exoplatform.services.jcr.impl.storage.value.ValueDataResourceHolder;
import org.exoplatform.services.jcr.impl.storage.value.cas.RecordNotFoundException;
import org.exoplatform.services.jcr.impl.storage.value.cas.ValueContentAddressStorage;
import org.exoplatform.services.jcr.impl.storage.value.fs.operations.CASableDeleteValues;
import org.exoplatform.services.jcr.impl.storage.value.fs.operations.CASableWriteValue;
import org.exoplatform.services.jcr.impl.util.io.FileCleaner;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;
import java.io.File;
import java.io.IOException;
import java.util.List;
/**
* Created by The eXo Platform SAS Date: 22.07.2008
*
* @author <a href="mailto:peter.nedonosko@exoplatform.com.ua">Peter Nedonosko</a>
* @version $Id: CASableTreeFileIOChannel.java 34801 2009-07-31 15:44:50Z dkatayev $
*/
public class CASableTreeFileIOChannel extends TreeFileIOChannel
{
static private final Log LOG = ExoLogger.getLogger("jcr.CASableTreeFileIOChannel");
private final ValueContentAddressStorage vcas;
private final CASableIOSupport cas;
CASableTreeFileIOChannel(File rootDir, FileCleaner cleaner, String storageId, ValueDataResourceHolder resources,
ValueContentAddressStorage vcas, String digestAlgo)
{
super(rootDir, cleaner, storageId, resources);
this.vcas = vcas;
this.cas = new CASableIOSupport(this, digestAlgo);
}
@Override
protected File getFile(final String propertyId, final int orderNumber) throws IOException
{
return super.getFile(vcas.getIdentifier(propertyId, orderNumber), CASableIOSupport.HASHFILE_ORDERNUMBER);
}
@Override
protected File[] getFiles(final String propertyId) throws IOException
{
List<String> hids = vcas.getIdentifiers(propertyId, true); // return only
// own ids
File[] files = new File[hids.size()];
for (int i = 0; i < hids.size(); i++)
// TODO super.getFile calls mkdirs(tfile.getParentFile())
files[i] = super.getFile(hids.get(i), CASableIOSupport.HASHFILE_ORDERNUMBER);
return files;
}
/**
* Delete given property value.<br/>
* Special logic implemented for Values CAS. As the storage may have one file (same hash) for
* multiple properties/values.<br/>
* The implementation assumes that delete operations based on {@link getFiles()} method result.
*
* @see getFiles()
* @param propertyId
* - property id to be deleted
*/
@Override
public void delete(String propertyId) throws IOException
{
File[] files;
try
{
files = getFiles(propertyId);
}
catch (RecordNotFoundException e)
{
// This is workaround for CAS VS. No records found for this value at the moment.
// CASableDeleteValues saves VCAS record on commit, but it's possible the Property just
// added in this transaction and not commited.
// TODO 08.04.2009 Skip error now
files = new File[0];
}
CASableDeleteValues o = new CASableDeleteValues(files, resources, cleaner, tempDir, propertyId, vcas);
o.execute();
changes.add(o);
}
@Override
public void write(String propertyId, ValueData value) throws IOException
{
CASableWriteValue o = new CASableWriteValue(value, resources, cleaner, tempDir, propertyId, vcas, cas);
o.execute();
changes.add(o);
}
}