| /* |
| * 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.matrix.data; |
| |
| import org.apache.hadoop.io.LongWritable; |
| import org.apache.hadoop.io.Text; |
| import org.apache.sysds.runtime.util.FastStringTokenizer; |
| |
| |
| public class TextToBinaryCellConverter |
| implements Converter<LongWritable, Text, MatrixIndexes, MatrixCell> |
| { |
| private MatrixIndexes indexes = new MatrixIndexes(); |
| private MatrixCell value = new MatrixCell(); |
| private Pair<MatrixIndexes, MatrixCell> pair = new Pair<>(indexes, value); |
| private FastStringTokenizer st = new FastStringTokenizer(' '); |
| private boolean hasValue = false; |
| private boolean toIgnore = false; |
| |
| @Override |
| public void convert(LongWritable k1, Text v1) |
| { |
| String str = v1.toString(); |
| |
| //handle support for matrix market format |
| if(str.startsWith("%")) { |
| if(str.startsWith("%%")) |
| toIgnore=true; |
| hasValue=false; |
| return; |
| } |
| else if(toIgnore) { |
| toIgnore=false; |
| hasValue=false; |
| return; |
| } |
| |
| //reset the tokenizer |
| st.reset( str ); |
| |
| //convert text to matrix cell |
| indexes.setIndexes( st.nextLong(), st.nextLong() ); |
| if( indexes.getRowIndex() == 0 || indexes.getColumnIndex() == 0 ) { |
| hasValue = false; |
| return; |
| } |
| value.setValue( st.nextDouble() ); |
| hasValue = true; |
| } |
| |
| @Override |
| public boolean hasNext() { |
| return hasValue; |
| } |
| |
| @Override |
| public Pair<MatrixIndexes, MatrixCell> next() { |
| if(!hasValue) |
| return null; |
| hasValue=false; |
| return pair; |
| } |
| |
| @Override |
| public void setBlockSize(int rl, int cl) { |
| //do nothing |
| } |
| } |