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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 com.c2kernel.lifecycle.instance.predefined;
import java.util.Arrays;
import com.c2kernel.collection.Aggregation;
import com.c2kernel.common.InvalidData;
import com.c2kernel.common.ObjectNotFound;
import com.c2kernel.common.PersistencyException;
import com.c2kernel.entity.C2KLocalObject;
import com.c2kernel.lookup.AgentPath;
import com.c2kernel.lookup.ItemPath;
import com.c2kernel.persistency.ClusterStorage;
import com.c2kernel.process.Gateway;
import com.c2kernel.property.PropertyDescription;
import com.c2kernel.property.PropertyDescriptionList;
import com.c2kernel.property.PropertyUtility;
import com.c2kernel.utils.CastorHashMap;
import com.c2kernel.utils.Logger;
/**************************************************************************
*
* @author $Author: abranson $ $Date: 2004/10/21 08:02:19 $
* @version $Revision: 1.8 $
**************************************************************************/
public class AddNewSlot extends PredefinedStep
{
/**************************************************************************
* Constructor for Castor
**************************************************************************/
public AddNewSlot()
{
super();
}
/**
* Creates a new slot in the given aggregation, that holds instances of the given item description
*
* Params:
* <ol><li>Collection name</li>
* <li>Item Description key (optional)</li>
* <li>Item Description version (optional)</li>
* </ol>
*
* @throws InvalidData Then the parameters were incorrect
* @throws PersistencyException There was a problem loading or saving the collection from persistency
* @throws ObjectNotFound A required object, such as the collection or a PropertyDescription outcome, wasn't found
*/
@Override
protected String runActivityLogic(AgentPath agent, ItemPath item,
int transitionID, String requestData) throws InvalidData, PersistencyException, ObjectNotFound {
String collName;
ItemPath descKey = null;
String descVer = "last";
Aggregation agg;
// extract parameters
String[] params = getDataList(requestData);
if (Logger.doLog(3)) Logger.msg(3, "AddNewSlot: called by "+agent+" on "+item+" with parameters "+Arrays.toString(params));
// resolve desc item path and version
try {
collName = params[0];
if (params.length > 1 && params[1].length() > 0) descKey = new ItemPath(params[1]);
if (params.length > 2 && params[2].length() > 0) descVer = params[2];
} catch (Exception e) {
throw new InvalidData("AddNewSlot: Invalid parameters "+Arrays.toString(params));
}
// load collection
C2KLocalObject collObj;
try {
collObj = Gateway.getStorage().get(item, ClusterStorage.COLLECTION+"/"+collName+"/last", null);
} catch (PersistencyException ex) {
Logger.error(ex);
throw new PersistencyException("AddNewSlot: Error loading collection '\"+collName+\"': "+ex.getMessage());
}
if (!(collObj instanceof Aggregation)) throw new InvalidData("AddNewSlot: AddNewSlot operates on Aggregation collections only.");
agg = (Aggregation)collObj;
// get props
CastorHashMap props = new CastorHashMap();
StringBuffer classProps = new StringBuffer();
if (descKey != null) {
PropertyDescriptionList propList;
propList = PropertyUtility.getPropertyDescriptionOutcome(descKey, descVer);
for (PropertyDescription pd : propList.list) {
props.put(pd.getName(), pd.getDefaultValue());
if (pd.getIsClassIdentifier())
classProps.append((classProps.length()>0?",":"")).append(pd.getName());
}
}
agg.addSlot(props, classProps.toString());
try {
Gateway.getStorage().put(item, agg, null);
} catch (PersistencyException e) {
Logger.error(e);
throw new PersistencyException("AddNewSlot: Error saving collection '"+collName+"': "+e.getMessage());
}
return requestData;
}
}
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