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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.collection.CollectionMember;
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.DomainPath;
import org.cristalise.kernel.lookup.InvalidItemPathException;
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 RemoveSlotFromCollection extends PredefinedStep
{
/**************************************************************************
* Constructor for Castor
**************************************************************************/
public RemoveSlotFromCollection()
{
super();
}
/**
* Params:
* 0 - collection name
* 1 - slot number OR if -1:
* 2 - target entity key
* @throws ObjectNotFoundException
* @throws PersistencyException
*/
@Override
protected String runActivityLogic(AgentPath agent, ItemPath item,
int transitionID, String requestData) throws InvalidDataException, ObjectNotFoundException, PersistencyException {
String collName;
int slotNo = -1;
ItemPath currentChild = null;
Collection<? extends CollectionMember> coll;
// extract parameters
String[] params = getDataList(requestData);
if (Logger.doLog(3)) Logger.msg(3, "RemoveSlotFromCollection: called by "+agent+" on "+item+" with parameters "+Arrays.toString(params));
try {
collName = params[0];
if (params.length>1 && params[1].length()>0) slotNo = Integer.parseInt(params[1]);
if (params.length>2 && params[2].length()>0) {
try {
currentChild = new ItemPath(params[2]);
} catch (InvalidItemPathException e) {
currentChild = new DomainPath(params[2]).getItemPath();
}
}
} catch (Exception e) {
throw new InvalidDataException("RemoveSlotFromCollection: Invalid parameters "+Arrays.toString(params));
}
if (slotNo == -1 && currentChild == null)
throw new InvalidDataException("RemoveSlotFromCollection: Must give either slot number or entity key");
// load collection
try {
coll = (Collection<? extends CollectionMember>)Gateway.getStorage().get(item, ClusterStorage.COLLECTION+"/"+collName+"/last", null);
} catch (PersistencyException ex) {
Logger.error(ex);
throw new PersistencyException("RemoveSlotFromCollection: Error loading collection '\"+collName+\"': "+ex.getMessage());
}
// check the slot is there if it's given by id
CollectionMember slot = null;
if (slotNo > -1) {
slot = coll.getMember(slotNo);
}
// if both parameters are supplied, check the given item is actually in that slot
if (slot != null && currentChild != null && !slot.getItemPath().equals(currentChild)) {
throw new ObjectNotFoundException("RemoveSlotFromCollection: Item "+currentChild+" was not in slot "+slotNo);
}
if (slotNo == -1) { // find slot from entity key
for (CollectionMember member : coll.getMembers().list) {
if (member.getItemPath().equals(currentChild)) {
slotNo = member.getID();
break;
}
}
}
if (slotNo == -1) {
throw new ObjectNotFoundException("Could not find "+currentChild+" in collection "+coll.getName());
}
// Remove the slot
coll.removeMember(slotNo);
// Store the collection
try {
Gateway.getStorage().put(item, coll, null);
} catch (PersistencyException e) {
Logger.error(e);
throw new PersistencyException("Error storing collection");
}
return requestData;
}
}
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