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/**************************************************************************
* AssignItemToSlot
*
* $Workfile$
* $Revision: 1.8 $
* $Date: 2004/10/21 08:02:19 $
*
* Copyright (C) 2001 CERN - European Organization for Nuclear Research
* All rights reserved.
**************************************************************************/
package com.c2kernel.lifecycle.instance.predefined;
import java.util.Arrays;
import com.c2kernel.collection.Aggregation;
import com.c2kernel.common.InvalidDataException;
import com.c2kernel.common.ObjectNotFoundException;
import com.c2kernel.entity.C2KLocalObject;
import com.c2kernel.lookup.AgentPath;
import com.c2kernel.lookup.ItemPath;
import com.c2kernel.persistency.ClusterStorage;
import com.c2kernel.persistency.ClusterStorageException;
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>
* </ol>
*/
@Override
protected String runActivityLogic(AgentPath agent, ItemPath item,
int transitionID, String requestData) throws InvalidDataException {
String collName;
ItemPath descKey = null;
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]);
} catch (Exception e) {
throw new InvalidDataException("AddNewSlot: Invalid parameters "+Arrays.toString(params), "");
}
// load collection
C2KLocalObject collObj;
try {
collObj = Gateway.getStorage().get(item, ClusterStorage.COLLECTION+"/"+collName, null);
} catch (ObjectNotFoundException ex) {
throw new InvalidDataException("AddNewSlot: Collection '"+collName+"' not found in this Item", "");
} catch (ClusterStorageException ex) {
Logger.error(ex);
throw new InvalidDataException("AddNewSlot: Error loading collection '\"+collName+\"': "+ex.getMessage(), "");
}
if (!(collObj instanceof Aggregation)) throw new InvalidDataException("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;
try {
propList = PropertyUtility.getPropertyDescriptionOutcome(descKey, "last");
} catch (ObjectNotFoundException e) {
throw new InvalidDataException("AddNewSlot: Item "+descKey+" does not contain a PropertyDescription outcome to define a slot", "");
}
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 (ClusterStorageException e) {
Logger.error(e);
throw new InvalidDataException("AddNewSlot: Error storing collection", "");
}
return requestData;
}
}
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