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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.server;

import java.util.Arrays;

import com.c2kernel.common.CannotManage;
import com.c2kernel.common.InvalidData;
import com.c2kernel.common.ObjectCannotBeUpdated;
import com.c2kernel.common.ObjectNotFound;
import com.c2kernel.lifecycle.instance.predefined.PredefinedStep;
import com.c2kernel.lookup.AgentPath;
import com.c2kernel.lookup.DomainPath;
import com.c2kernel.lookup.ItemPath;
import com.c2kernel.process.Gateway;
import com.c2kernel.utils.Logger;

public class RemoveDomainContext extends PredefinedStep {
	public RemoveDomainContext() {
        super();
	}
	
	@Override
	protected String runActivityLogic(AgentPath agent, ItemPath item,
			int transitionID, String requestData) throws InvalidData, ObjectNotFound, ObjectCannotBeUpdated, CannotManage {
	
		String[] params = getDataList(requestData);
        if (Logger.doLog(3)) Logger.msg(3, "RemoveDomainContext: called by "+agent+" on "+item+" with parameters "+Arrays.toString(params));
        if (params.length != 1) throw new InvalidData("RemoveDomainContext: Invalid parameters "+Arrays.toString(params));
        
		DomainPath pathToDelete = new DomainPath(params[0]);
		if (!pathToDelete.exists())
			throw new ObjectNotFound("Context "+pathToDelete+" does not exist");
		
		try {
			pathToDelete.getItemPath();
			throw new InvalidData("Path "+pathToDelete+" is an Entity. Use its own Erase step instead, or RemoveAgent.");
		} catch (ObjectNotFound ex) { }
		
		if (Gateway.getLookup().getChildren(pathToDelete).hasNext())
			throw new ObjectCannotBeUpdated("Context "+pathToDelete+" is not empty. Cannot delete.");
		
		Gateway.getLookupManager().delete(pathToDelete);
		return requestData;
	}
}