/*
 * 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.runtime.instructions.mr;

import org.apache.sysml.parser.DataExpression;
import org.apache.sysml.runtime.DMLRuntimeException;
import org.apache.sysml.runtime.instructions.Instruction;
import org.apache.sysml.runtime.matrix.data.MatrixValue;
import org.apache.sysml.runtime.matrix.mapred.CachedValueMap;
import org.apache.sysml.runtime.matrix.mapred.IndexedMatrixValue;
import org.apache.sysml.runtime.matrix.operators.Operator;

public class CSVWriteInstruction extends UnaryMRInstructionBase{

	
	public String delim= DataExpression.DEFAULT_DELIM_DELIMITER;
	public String header=null;//if null or empty string, then no header
	public boolean sparse=DataExpression.DEFAULT_DELIM_SPARSE;
	
	public CSVWriteInstruction(Operator op, byte in, byte out, String del, String hdr, boolean sps, String istr) {
		super(op, in, out);
		mrtype = MRINSTRUCTION_TYPE.CSVWrite;
		delim=del;
		header=hdr;
		sparse=sps;
		instString = istr;
	}
	
	public static CSVWriteInstruction parseInstruction(String str) {
		Operator op = null;
		byte input, output;
		String[] s=str.split(Instruction.OPERAND_DELIM);
		
		String[] in1f = s[2].split(Instruction.DATATYPE_PREFIX);
		input=Byte.parseByte(in1f[0]);
		
		String[] outf = s[3].split(Instruction.DATATYPE_PREFIX);
		output=Byte.parseByte(outf[0]);
		
		String header=s[4];
		String delim=s[5];
		boolean sparse=Boolean.parseBoolean(s[6]);
		return new CSVWriteInstruction(op, input, output, delim, header, sparse, str);
	}
	
	@Override
	public void processInstruction(Class<? extends MatrixValue> valueClass,
			CachedValueMap cachedValues, IndexedMatrixValue tempValue,
			IndexedMatrixValue zeroInput, int blockRowFactor, int blockColFactor)
			throws DMLRuntimeException {
		throw new DMLRuntimeException("CSVWriteInstruction.processInstruction should never be called");		
	}
}