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.edge; 20 21 import org.apache.hadoop.io.Writable; 22 import org.apache.hadoop.io.WritableComparable; 23 24 /** 25 * Empty interface to characterize {@link OutEdges} implementations that 26 * don't keep references to the Edge (or id and value) objects they are passed. 27 * The Giraph infrastructure can exploit this characteristic by reusing Edge 28 * objects. 29 * 30 * @param <I> Vertex id 31 * @param <E> Edge value 32 */ 33 public interface ReuseObjectsOutEdges<I extends WritableComparable, 34 E extends Writable> extends OutEdges<I, E> { }