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Declarative Machine Learning
/*
* 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 java.util.ArrayList;
import org.apache.sysml.runtime.DMLRuntimeException;
import org.apache.sysml.runtime.DMLUnsupportedOperationException;
import org.apache.sysml.runtime.instructions.InstructionUtils;
import org.apache.sysml.runtime.matrix.data.LibMatrixReorg;
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;
import org.apache.sysml.runtime.util.UtilFunctions;
/**
* Supported optcodes: rmempty.
*
*/
public class RemoveEmptyMRInstruction extends BinaryInstruction
{
private long _len = -1;
private boolean _rmRows = true;
public RemoveEmptyMRInstruction(Operator op, byte in1, byte in2, long len, boolean rmRows, byte out, String istr)
{
super(op, in1, in2, out, istr);
instString = istr;
_len = len;
_rmRows = rmRows;
}
public boolean isRemoveRows()
{
return _rmRows;
}
public long getOutputLen()
{
return _len;
}
/**
*
* @param str
* @return
* @throws DMLRuntimeException
*/
public static RemoveEmptyMRInstruction parseInstruction ( String str )
throws DMLRuntimeException
{
InstructionUtils.checkNumFields ( str, 5 );
String[] parts = InstructionUtils.getInstructionParts(str);
String opcode = parts[0];
if(!opcode.equalsIgnoreCase("rmempty"))
throw new DMLRuntimeException("Unknown opcode while parsing an RemoveEmptyMRInstruction: " + str);
byte in1 = Byte.parseByte(parts[1]);
byte in2 = Byte.parseByte(parts[2]);
long rlen = UtilFunctions.toLong(Double.parseDouble(parts[3]));
boolean rmRows = parts[4].equals("rows");
byte out = Byte.parseByte(parts[5]);
return new RemoveEmptyMRInstruction(null, in1, in2, rlen, rmRows, out, str);
}
@Override
public void processInstruction(Class valueClass,
CachedValueMap cachedValues, IndexedMatrixValue tempValue,
IndexedMatrixValue zeroInput, int blockRowFactor, int blockColFactor)
throws DMLUnsupportedOperationException, DMLRuntimeException
{
//get input and offsets
IndexedMatrixValue inData = cachedValues.getFirst(input1);
IndexedMatrixValue inOffset = cachedValues.getFirst(input2);
//execute remove empty operations
ArrayList out = new ArrayList();
LibMatrixReorg.rmempty(inData, inOffset, _rmRows, _len, blockRowFactor, blockColFactor, out);
//put results into cache map
for( IndexedMatrixValue imv : out )
cachedValues.add(output, imv);
}
}