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/**
* This file is part of the CRISTAL-iSE kernel.
* Copyright (c) 2001-2014 The CRISTAL Consortium. All rights reserved.
*
* This library 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 3 of the License, or (at
* your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; with out 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 library; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*
* http://www.fsf.org/licensing/licenses/lgpl.html
*/
package org.cristalise.kernel.lifecycle.instance.predefined;
import java.util.Arrays;
import org.cristalise.kernel.collection.Collection;
import org.cristalise.kernel.common.InvalidDataException;
import org.cristalise.kernel.common.ObjectNotFoundException;
import org.cristalise.kernel.common.PersistencyException;
import org.cristalise.kernel.lookup.AgentPath;
import org.cristalise.kernel.lookup.ItemPath;
import org.cristalise.kernel.persistency.ClusterStorage;
import org.cristalise.kernel.process.Gateway;
import org.cristalise.kernel.utils.Logger;
/**************************************************************************
*
* @author $Author: abranson $ $Date: 2004/10/21 08:02:19 $
* @version $Revision: 1.8 $
**************************************************************************/
public class CreateNewCollectionVersion extends PredefinedStep
{
/**************************************************************************
* Constructor for Castor
**************************************************************************/
public CreateNewCollectionVersion()
{
super();
}
/**
* Generates a new snapshot of a collection from its current state. The
* new version is given the next available number, starting at 0.
*
* Params:
* 0 - Collection name
* @throws InvalidDataException
* @throws PersistencyException
*
* @throws ObjectNotFoundException when there is no collection present with
* that name
*/
@Override
protected String runActivityLogic(AgentPath agent, ItemPath item,
int transitionID, String requestData) throws InvalidDataException, PersistencyException, ObjectNotFoundException
{
String collName;
// extract parameters
String[] params = getDataList(requestData);
if (Logger.doLog(3)) Logger.msg(3, "CreateNewCollectionVersion: called by "+agent+" on "+item+" with parameters "+Arrays.toString(params));
if (params.length != 1)
throw new InvalidDataException("CreateNewCollectionVersion: Invalid parameters "+Arrays.toString(params));
collName = params[0];
Collection<?> coll = (Collection<?>)Gateway.getStorage().get(item, ClusterStorage.COLLECTION+"/"+collName+"/last", null);
// find last numbered version
int lastVer = -1;
String[] versions = Gateway.getStorage().getClusterContents(item, ClusterStorage.COLLECTION+"/"+collName);
for (String thisVerStr : versions) {
try {
int thisVer = Integer.parseInt(thisVerStr);
if (thisVer > lastVer) lastVer = thisVer;
} catch (NumberFormatException ex) { } // ignore non-integer versions
}
// Remove it from the cache before we change it
Gateway.getStorage().clearCache(item, ClusterStorage.COLLECTION+"/"+collName+"/last");
// Set the version
coll.setVersion(lastVer+1);
// store it
try {
Gateway.getStorage().put(item, coll, null);
} catch (PersistencyException e) {
throw new PersistencyException("CreateNewCollectionVersion: Error saving new collection '"+collName+"': "+e.getMessage());
}
return requestData;
}
}
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