| /* |
| * 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.giraph.utils; |
| |
| import org.apache.giraph.conf.ImmutableClassesGiraphConfiguration; |
| import org.apache.giraph.edge.Edge; |
| import org.apache.hadoop.io.Writable; |
| import org.apache.hadoop.io.WritableComparable; |
| |
| import java.io.IOException; |
| |
| /** |
| * Stores vertex id and edge pairs in a single byte array. |
| * |
| * @param <I> Vertex id |
| * @param <E> Edge value |
| */ |
| @SuppressWarnings("unchecked") |
| public class ByteArrayVertexIdEdges<I extends WritableComparable, |
| E extends Writable> extends ByteArrayVertexIdData<I, Edge<I, |
| E>> implements VertexIdEdges<I, E> { |
| /** |
| * Cast the {@link ImmutableClassesGiraphConfiguration} so it can be used |
| * to generate edge objects. |
| * |
| * @return Casted configuration |
| */ |
| @Override |
| public ImmutableClassesGiraphConfiguration<I, ?, E> getConf() { |
| return (ImmutableClassesGiraphConfiguration<I, ?, E>) super.getConf(); |
| } |
| |
| @Override |
| public Edge<I, E> createData() { |
| return getConf().createReusableEdge(); |
| } |
| |
| @Override |
| public void writeData(ExtendedDataOutput out, Edge<I, E> edge) |
| throws IOException { |
| WritableUtils.writeEdge(out, edge); |
| } |
| |
| @Override |
| public void readData(ExtendedDataInput in, Edge<I, E> edge) |
| throws IOException { |
| WritableUtils.readEdge(in, edge); |
| } |
| |
| @Override |
| public ByteStructVertexIdEdgeIterator<I, E> getVertexIdEdgeIterator() { |
| return new ByteStructVertexIdEdgeIterator<>(this); |
| } |
| } |
| |