| /* |
| * 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 DiagIndex extends IndexFunction |
| { |
| private static final long serialVersionUID = -5294771266108903886L; |
| private final boolean diagV2M; |
| |
| private DiagIndex(boolean v2m) { |
| diagV2M = v2m; |
| } |
| |
| public static DiagIndex getDiagIndexFnObject() { |
| return getDiagIndexFnObject(true); |
| } |
| |
| public static DiagIndex getDiagIndexFnObject(boolean v2m) { |
| return new DiagIndex(v2m); |
| } |
| |
| @Override |
| public void execute(MatrixIndexes in, MatrixIndexes out) { |
| out.setIndexes(in.getRowIndex(), diagV2M ? in.getRowIndex() : 1); |
| } |
| |
| @Override |
| public void execute(CellIndex in, CellIndex out) { |
| //only used for V2M |
| out.set(in.row, in.row); |
| } |
| |
| @Override |
| public boolean computeDimension(int row, int col, CellIndex retDim) { |
| if( col == 1 ) //diagV2M |
| retDim.set(row, row); |
| else //diagM2V |
| retDim.set(row, 1); |
| return false; |
| } |
| |
| @Override |
| public boolean computeDimension(DataCharacteristics in, DataCharacteristics out) { |
| if( in.getCols() == 1 ) //diagV2M |
| out.set(in.getRows(), in.getRows(), in.getBlocksize(), in.getBlocksize()); |
| else //diagM2V |
| out.set(in.getRows(), 1, in.getBlocksize(), in.getBlocksize()); |
| return false; |
| } |
| } |