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Declarative Machine Learning
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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.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.DataType;
import org.apache.sysml.parser.Expression.ValueType;


public class RepMat extends Lop 
{
	
	public static final String OPCODE = "rep";
	
	private boolean _repCols = true;
	
	/**
	 * Constructor to setup a partial Matrix-Vector Multiplication
	 * 
	 * @param input
	 * @param op
	 * @return 
	 * @throws LopsException
	 */	
	public RepMat(Lop input1, Lop input2, boolean repCols, DataType dt, ValueType vt) 
		throws LopsException 
	{
		super(Lop.Type.RepMat, dt, vt);		
		this.addInput(input1);
		this.addInput(input2);
		input1.addOutput(this);
		input2.addOutput(this);
	
		_repCols = repCols;
		
		//setup MR parameters 
		boolean breaksAlignment = true;
		boolean aligner = false;
		boolean definesMRJob = false;
		lps.addCompatibility(JobType.GMR);
		lps.addCompatibility(JobType.DATAGEN);
		lps.setProperties( inputs, ExecType.MR, ExecLocation.Map, breaksAlignment, aligner, definesMRJob );
	}


	public String toString() {
		return "Operation = RepMat";
	}
	
	@Override
	public String getInstructions(int input_index1, int input_index2, int output_index)
	{
		StringBuilder sb = new StringBuilder();
		
		sb.append(getExecType());
		sb.append(Lop.OPERAND_DELIMITOR);
		
		sb.append(OPCODE);
		
		sb.append(Lop.OPERAND_DELIMITOR);
		sb.append( getInputs().get(0).prepInputOperand(input_index1));
		
		sb.append(Lop.OPERAND_DELIMITOR);
		sb.append(_repCols);
		
		sb.append(Lop.OPERAND_DELIMITOR);
		sb.append( getInputs().get(1).prepScalarInputOperand(getExecType()));
		
		sb.append(Lop.OPERAND_DELIMITOR);
		sb.append( this.prepOutputOperand(output_index));
		
		return sb.toString();
	}
}