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 package org.apache.giraph.conf; 19 20 import org.apache.hadoop.io.Writable; 21 import org.apache.hadoop.io.WritableComparable; 22 23 /** 24 * Interface for classes that are parameterized by all of the Giraph types. 25 * These classes can be used to infer the types used by {@link GiraphTypes} 26 * 27 * @param <I> Vertex ID 28 * @param <V> Vertex Value 29 * @param <E> Edge Value 30 * @param <M1> Incoming Message Value 31 * @param <M2> Outgoing Message Value 32 */ 33 public interface TypesHolder<I extends WritableComparable, 34 V extends Writable, E extends Writable, M1 extends Writable, 35 M2 extends Writable> { 36 // Nothing here 37 }