| /* |
| * 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.instructions.InstructionUtils; |
| import org.apache.sysml.runtime.matrix.data.LibMatrixReorg; |
| import org.apache.sysml.runtime.matrix.data.MatrixBlock; |
| import org.apache.sysml.runtime.matrix.data.MatrixIndexes; |
| 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 final long _len; |
| private final boolean _rmRows; |
| private final boolean _emptyRet; |
| |
| private RemoveEmptyMRInstruction(Operator op, byte in1, byte in2, long len, boolean rmRows, boolean emptyRet, byte out, String istr) { |
| super(MRType.RemoveEmpty, op, in1, in2, out, istr); |
| instString = istr; |
| _len = len; |
| _rmRows = rmRows; |
| _emptyRet = emptyRet; |
| } |
| |
| public boolean isRemoveRows() { |
| return _rmRows; |
| } |
| |
| public boolean isEmptyReturn() { |
| return _emptyRet; |
| } |
| |
| public long getOutputLen() { |
| return _len; |
| } |
| |
| public static RemoveEmptyMRInstruction parseInstruction ( String str ) |
| throws DMLRuntimeException |
| { |
| InstructionUtils.checkNumFields (str, 6); |
| |
| 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"); |
| boolean emptyRet = Boolean.parseBoolean(parts[5].toLowerCase()); |
| byte out = Byte.parseByte(parts[6]); |
| |
| return new RemoveEmptyMRInstruction(null, in1, in2, rlen, rmRows, emptyRet, out, str); |
| } |
| |
| @Override |
| public void processInstruction(Class<? extends MatrixValue> valueClass, |
| CachedValueMap cachedValues, IndexedMatrixValue tempValue, |
| IndexedMatrixValue zeroInput, int blockRowFactor, int blockColFactor) |
| throws DMLRuntimeException |
| { |
| //get input and offsets |
| IndexedMatrixValue inData = cachedValues.getFirst(input1); |
| IndexedMatrixValue inOffset = cachedValues.getFirst(input2); |
| MatrixIndexes ix = inData.getIndexes(); |
| MatrixValue mb = inData.getValue(); |
| |
| if( _len > 0 ) { |
| //execute remove empty operations |
| ArrayList<IndexedMatrixValue> 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); |
| } |
| else { |
| int n = _emptyRet ? 1 : 0; |
| cachedValues.add(output, new IndexedMatrixValue( |
| new MatrixIndexes(_rmRows?1:ix.getRowIndex(), _rmRows?ix.getColumnIndex():1), |
| new MatrixBlock(_rmRows?n:mb.getNumRows(), _rmRows?mb.getNumColumns():n, false))); |
| } |
| } |
| } |