| /* |
| * 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.edge; |
| |
| import org.apache.hadoop.io.Writable; |
| import org.apache.hadoop.io.WritableComparable; |
| |
| /** |
| * Interface for {@link OutEdges} implementations that provide efficient |
| * random access to the edges given the target vertex id. |
| * This version is for strict graphs (i.e. assumes no parallel edges). |
| * |
| * @param <I> Vertex id |
| * @param <E> Edge value |
| */ |
| public interface StrictRandomAccessOutEdges<I extends WritableComparable, |
| E extends Writable> extends OutEdges<I, E> { |
| /** |
| * Return the edge value for the given target vertex id (or null if there |
| * is no edge pointing to it). |
| * |
| * @param targetVertexId Target vertex id |
| * @return Edge value |
| */ |
| E getEdgeValue(I targetVertexId); |
| |
| /** |
| * Set the edge value for the given target vertex id (if an edge to that |
| * vertex exists). |
| * |
| * @param targetVertexId Target vertex id |
| * @param edgeValue Edge value |
| */ |
| void setEdgeValue(I targetVertexId, E edgeValue); |
| } |