src/main/java/org/apache/sysml/lops/TernaryAggregate.java

/*
 * 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.lops;

import org.apache.sysml.lops.LopProperties.ExecLocation;
import org.apache.sysml.lops.LopProperties.ExecType;
import org.apache.sysml.lops.compile.JobType;
import org.apache.sysml.parser.Expression.*;


/**
 * 
 * 
 */
public class TernaryAggregate extends Lop 
{
	
	private static final String OPCODE = "tak+*";
	
	//NOTE: currently only used for ta+*
	//private Aggregate.OperationTypes _aggOp = null;
	//private Binary.OperationTypes _binOp = null;
	
	//optional attribute for cp
	private int _numThreads = -1;
	
	public TernaryAggregate(Lop input1, Lop input2, Lop input3, Aggregate.OperationTypes aggOp, Binary.OperationTypes binOp, DataType dt, ValueType vt, ExecType et ) {
		this(input1, input2, input3, aggOp, binOp, dt, vt, et, 1);
	}
	
	/**
	 * @param et 
	 * @param input - input lop
	 * @param op - operation type
	 */
	public TernaryAggregate(Lop input1, Lop input2, Lop input3, Aggregate.OperationTypes aggOp, Binary.OperationTypes binOp, DataType dt, ValueType vt, ExecType et, int k ) 
	{
		super(Lop.Type.TernaryAggregate, dt, vt);
		
		//_aggOp = aggOp;	
		//_binOp = binOp;
		
		addInput(input1);
		addInput(input2);
		addInput(input3);
		input1.addOutput(this);
		input2.addOutput(this);
		input3.addOutput(this);
		
		_numThreads = k;
		
		boolean breaksAlignment = false;
		boolean aligner = false;
		boolean definesMRJob = false;
		lps.addCompatibility(JobType.INVALID);
		lps.setProperties( inputs, et, ExecLocation.ControlProgram, breaksAlignment, aligner, definesMRJob );
	}
	
	@Override
	public String toString()
	{
		return "Operation: "+OPCODE;		
	}
	
	@Override
	public String getInstructions(String input1, String input2, String input3, String output) 
		throws LopsException 
	{
		StringBuilder sb = new StringBuilder();
		sb.append( getExecType() );
		sb.append( OPERAND_DELIMITOR );
		sb.append( OPCODE );
		sb.append( OPERAND_DELIMITOR );
		sb.append( getInputs().get(0).prepInputOperand(input1));
		sb.append( OPERAND_DELIMITOR );
		sb.append( getInputs().get(1).prepInputOperand(input2));
		sb.append( OPERAND_DELIMITOR );
		sb.append( getInputs().get(2).prepInputOperand(input3));
		sb.append( OPERAND_DELIMITOR );
		sb.append( prepOutputOperand(output));
		
		if( getExecType() == ExecType.CP ) {
			sb.append( OPERAND_DELIMITOR );
			sb.append( _numThreads );	
		}
		
		return sb.toString();
	}
}