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DefaultMasterCompute xref
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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  }