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.master; 20 21 import java.io.DataInput; 22 import java.io.DataOutput; 23 import java.io.IOException; 24 25 /** 26 * A dumb implementation of {@link MasterCompute}. This is the default 27 * implementation when no MasterCompute is defined by the user. It does 28 * nothing. 29 */ 30 31 public class DefaultMasterCompute extends MasterCompute { 32 33 @Override 34 public void readFields(DataInput in) throws IOException { 35 } 36 37 @Override 38 public void write(DataOutput out) throws IOException { 39 } 40 41 @Override 42 public void compute() { 43 } 44 45 @Override 46 public void initialize() throws InstantiationException, 47 IllegalAccessException { 48 } 49 50 }