/**
 * 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.common.InvalidDataException;
import com.c2kernel.events.Event;
import com.c2kernel.events.History;
import com.c2kernel.lookup.AgentPath;
import com.c2kernel.lookup.ItemPath;
import com.c2kernel.persistency.ClusterStorageException;
import com.c2kernel.persistency.TransactionManager;
import com.c2kernel.persistency.outcome.Outcome;
import com.c2kernel.persistency.outcome.Viewpoint;
import com.c2kernel.process.Gateway;
import com.c2kernel.utils.Logger;

/**************************************************************************
 *
 * $Revision: 1.21 $
 * $Date: 2005/06/02 12:17:22 $
 *
 * Params: Schemaname_version:Viewpoint (optional), Outcome, Timestamp (optional
 *
 * Copyright (C) 2003 CERN - European Organization for Nuclear Research
 * All rights reserved.
 **************************************************************************/
public class Import extends PredefinedStep
{
    public Import()
    {
        super();
    }

	//requestdata is xmlstring
    @Override
	protected String runActivityLogic(AgentPath agent, ItemPath item,
			int transitionID, String requestData) throws InvalidDataException {

        String[] params = getDataList(requestData);
        if (Logger.doLog(3)) Logger.msg(3, "Import: called by "+agent+" on "+item+" with parameters "+Arrays.toString(params));
        
        int split1 = params[0].indexOf('_');
        int split2 = params[0].indexOf(':');
        
        if (split1 == -1)
        	throw new InvalidDataException("Import: Invalid parameters "+Arrays.toString(params));
        
        requestData = params[1];

        String schemaName = params[0].substring(0, split1);
        String viewpoint = null;
        int schemaVersion;
        if (split2 > -1) {
            schemaVersion = Integer.parseInt(params[0].substring(split1+1, split2));
            viewpoint = params[0].substring(split2+1);
        }
        else
            schemaVersion = Integer.parseInt(params[0].substring(split1+1));

        String timestamp;
        if (params.length == 3)
        	timestamp = params[2];
        else
        	timestamp = Event.timeToString(Event.getGMT());
        
        // write event, outcome and viewpoints to storage

        TransactionManager storage = Gateway.getStorage();
        Object locker = getWf();
        History hist = getWf().getHistory();
		Event event = hist.addEvent(agent, getCurrentAgentRole(), getName(), getPath(), getType(), schemaName, schemaVersion, getStateMachine().getName(), getStateMachine().getVersion(), getStateMachine().getTransition(transitionID), viewpoint, timestamp);

		try {
			storage.put(item, new Outcome(event.getID(), requestData, schemaName, schemaVersion), locker);
			storage.put(item, new Viewpoint(item, schemaName, viewpoint, schemaVersion, event.getID()), locker);
			if (!"last".equals(viewpoint))
				storage.put(item, new Viewpoint(item, schemaName, "last", schemaVersion, event.getID()), locker);
		} catch (ClusterStorageException e) {
			Logger.error(e);
			storage.abort(locker);
			throw new InvalidDataException("Import: Could not store imported outcome. Rolled back.", "");
		}
		storage.commit(locker);
		return requestData;
    }
}