/*******************************************************************************
*   Copyright 2012 Analog Devices, Inc.
*
*   Licensed under the Apache License, Version 2.0 (the "License");
*   you may not use this file except in compliance with the License.
*   You may obtain a copy of the License at
*
*       http://www.apache.org/licenses/LICENSE-2.0
*
*   Unless required by applicable law or agreed to in writing, software
*   distributed under the License is distributed on an "AS IS" BASIS,
*   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*   See the License for the specific language governing permissions and
*   limitations under the License.
********************************************************************************/

package com.analog.lyric.dimple.schedulers;

import java.util.Map;

import com.analog.lyric.dimple.model.core.FactorGraph;
import com.analog.lyric.dimple.schedulers.schedule.ISchedule;

/**
 * @author jeffb
 * 
 *         If this graph is a tree, or any of it's sub-graphs are trees, this
 *         class generates a tree-schedule. Otherwise it generates a sequential
 *         schedule on the portion of the graph that is not a tree.
 * 
 *         This scheduler respects any schedulers already assigned to
 *         sub-graphs. That is, if a sub-graph already has a scheduler
 *         associated with it, that scheduler will be used for that sub-graph
 *         instead of this one.
 */
public class TreeOrSequentialScheduler extends TreeSchedulerAbstract
{
	private static final long serialVersionUID = 1L;

	public TreeOrSequentialScheduler()
	{
		super();
	}
	
	TreeOrSequentialScheduler(TreeOrSequentialScheduler other)
	{
		super(other);
	}
	
	@Override
	public IScheduler copy(Map<Object, Object> old2NewMap, boolean copyToRoot)
	{
		return new TreeOrSequentialScheduler(this);
	}
	
	@Override
	protected ISchedule createNonTreeSchedule(FactorGraph g)
	{
		SequentialScheduler sequentialScheduler = new SequentialScheduler();
		sequentialScheduler.setSubGraphScheduler(TreeOrSequentialScheduler.class);
		ISchedule schedule = sequentialScheduler.createSchedule(g);
		schedule.setScheduler(this);
		return schedule;
	}


}