AppendCPInstruction.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
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 * 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
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package org.apache.sysml.runtime.instructions.cp;

import org.apache.sysml.parser.Expression.DataType;
import org.apache.sysml.runtime.DMLRuntimeException;
import org.apache.sysml.runtime.functionobjects.OffsetColumnIndex;
import org.apache.sysml.runtime.instructions.InstructionUtils;
import org.apache.sysml.runtime.matrix.operators.Operator;
import org.apache.sysml.runtime.matrix.operators.ReorgOperator;


public abstract class AppendCPInstruction extends BinaryCPInstruction
{	
	public enum AppendType{
		CBIND,
		RBIND,
		STRING,
	}

	//type (matrix cbind / scalar string concatenation)
	protected AppendType _type;
	
	public AppendCPInstruction(Operator op, CPOperand in1, CPOperand in2, CPOperand in3, CPOperand out, AppendType type, String opcode, String istr)
	{
		super(op, in1, in2, out, opcode, istr);
		_cptype = CPINSTRUCTION_TYPE.Append;
		
		_type = type;
	}

	public static AppendCPInstruction parseInstruction ( String str ) 
		throws DMLRuntimeException 
	{
		String[] parts = InstructionUtils.getInstructionPartsWithValueType(str);
		InstructionUtils.checkNumFields (parts, 5);
		
		String opcode = parts[0];
		CPOperand in1 = new CPOperand(parts[1]);
		CPOperand in2 = new CPOperand(parts[2]);
		CPOperand in3 = new CPOperand(parts[3]);
		CPOperand out = new CPOperand(parts[4]);
		boolean cbind = Boolean.parseBoolean(parts[5]);
		
		AppendType type = (in1.getDataType()!=DataType.MATRIX && in1.getDataType()!=DataType.FRAME) ? 
				AppendType.STRING : cbind ? AppendType.CBIND : AppendType.RBIND;
		
		if(!opcode.equalsIgnoreCase("append"))
			throw new DMLRuntimeException("Unknown opcode while parsing a AppendCPInstruction: " + str);

		Operator op = new ReorgOperator(OffsetColumnIndex.getOffsetColumnIndexFnObject(-1));
		if( type == AppendType.STRING )
			return new ScalarAppendCPInstruction(op, in1, in2, in3, out, type, opcode, str);
		else if( in1.getDataType()==DataType.MATRIX )
			return new MatrixAppendCPInstruction(op, in1, in2, in3, out, type, opcode, str);	
		else //DataType.FRAME
			return new FrameAppendCPInstruction(op, in1, in2, in3, out, type, opcode, str);		
	}
}