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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.sysml.hops.globalopt;

import org.apache.sysml.hops.Hop.FileFormatTypes;
import org.apache.sysml.hops.globalopt.InterestingProperties.Location;
import org.apache.sysml.lops.LopProperties.ExecType;



/**
 * This RewriteConfig represents an instance configuration of a particular rewrite.
 * 
 */
public class RewriteConfig 
{
	
	/*
	public enum RewriteConfigType {
		BLOCK_SIZE,
		FORMAT_CHANGE,
		EXEC_TYPE,
		DATA_PARTITIONING,
		VECTORIZATION,
		REPLICATION_FACTOR
	}
	*/
	
	private ExecType _rewriteSetExecType  = null;
	private int      _rewriteSetBlockSize = -1;
	private FileFormatTypes _rewriteFormat = null;
	
	public RewriteConfig( ExecType et, int bs, FileFormatTypes format )
	{
		_rewriteSetExecType = et;
		_rewriteSetBlockSize = bs;
		_rewriteFormat = format;
	}
	
	public RewriteConfig( RewriteConfig rc )
	{
		_rewriteSetExecType = rc._rewriteSetExecType;
		_rewriteSetBlockSize = rc._rewriteSetBlockSize;
		_rewriteFormat = rc._rewriteFormat;
	}
	
	public ExecType getExecType()
	{
		return _rewriteSetExecType;
	}
	
	public int getBlockSize()
	{
		return _rewriteSetBlockSize;
	}
	
	public FileFormatTypes getFormat()
	{
		return _rewriteFormat;
	}
	
	/**
	 * 
	 * @return
	 */
	public InterestingProperties deriveInterestingProperties()
	{
		int bs = _rewriteSetBlockSize; 
		Location loc = (_rewriteSetExecType==ExecType.CP) ? Location.MEM : Location.HDFS;
		
		return new InterestingProperties(bs, null, loc, null, -1, true);
	}

	
	@Override
	public String toString() 
	{
		return "RC["+_rewriteSetExecType+","+_rewriteSetBlockSize+"]";//+_type+"="+_value + "]";
	}

}