1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19 package org.apache.giraph.aggregators; 20 21 import org.apache.hadoop.io.Text; 22 23 /** 24 * Aggregator with {@link Text} as its value which keeps appending text to it 25 */ 26 public class TextAppendAggregator extends BasicAggregator<Text> { 27 @Override 28 public void aggregate(Text value) { 29 byte[] valueBytes = value.getBytes(); 30 getAggregatedValue().append(valueBytes, 0, valueBytes.length); 31 } 32 33 @Override 34 public Text createInitialValue() { 35 return new Text(); 36 } 37 }