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 import java.util.Iterator; 25 26 /** 27 * Interface for {@link OutEdges} implementations that have an optimized 28 * mutable edge iterator. 29 * 30 * @param <I> Vertex id 31 * @param <E> Edge value 32 */ 33 public interface MutableOutEdges<I extends WritableComparable, 34 E extends Writable> extends OutEdges<I, E> { 35 /** 36 * Returns an iterator over edges that can be modified in-place, 37 * either by changing the current edge value or by removing the current edge. 38 * 39 * @return A mutable edge iterator 40 */ 41 Iterator<MutableEdge<I, E>> mutableIterator(); 42 }