| /* |
| * 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.sysds.runtime.functionobjects; |
| |
| import org.apache.sysds.runtime.matrix.data.MatrixIndexes; |
| import org.apache.sysds.runtime.matrix.data.MatrixValue.CellIndex; |
| import org.apache.sysds.runtime.meta.DataCharacteristics; |
| |
| |
| public class ReduceRow extends IndexFunction |
| { |
| |
| private static final long serialVersionUID = 3611700251686303484L; |
| |
| private static ReduceRow singleObj = null; |
| |
| private ReduceRow() { |
| // nothing to do here |
| } |
| |
| public static ReduceRow getReduceRowFnObject() { |
| if ( singleObj == null ) |
| singleObj = new ReduceRow(); |
| return singleObj; |
| } |
| |
| /* |
| * NOTE: index starts from 1 for cells in a matrix, but index starts from 0 for cells inside a block |
| */ |
| |
| @Override |
| public void execute(MatrixIndexes in, MatrixIndexes out) { |
| out.setIndexes(1, in.getColumnIndex()); |
| } |
| |
| @Override |
| public void execute(CellIndex in, CellIndex out) { |
| out.row=0; |
| out.column=in.column; |
| } |
| |
| @Override |
| public boolean computeDimension(int row, int col, CellIndex retDim) { |
| retDim.set(1, col); |
| return true; |
| } |
| |
| @Override |
| public boolean computeDimension(DataCharacteristics in, DataCharacteristics out) { |
| out.set(1, in.getCols(), in.getBlocksize()); |
| return true; |
| } |
| |
| } |