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.utils; 20 21 import org.apache.hadoop.io.WritableComparable; 22 23 import java.io.DataInput; 24 import java.io.DataOutput; 25 import java.io.IOException; 26 27 /** 28 * Stores pairs of vertex id and generic data in a single byte array 29 * 30 * @param <I> Vertex id 31 * @param <T> Data 32 */ 33 public abstract class ByteArrayVertexIdData<I extends WritableComparable, 34 T> extends AbstractVertexIdData<I, T> { 35 36 /** 37 * Get the underlying byte-array. 38 * 39 * @return The underlying byte-array 40 */ 41 public byte[] getByteArray() { 42 return extendedDataOutput.getByteArray(); 43 } 44 45 @Override 46 public void write(DataOutput dataOutput) throws IOException { 47 WritableUtils.writeExtendedDataOutput(extendedDataOutput, dataOutput); 48 } 49 50 @Override 51 public void readFields(DataInput dataInput) throws IOException { 52 extendedDataOutput = 53 WritableUtils.readExtendedDataOutput(dataInput, getConf()); 54 } 55 }