| /* |
| * 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.block_app.library.algo; |
| |
| import org.apache.giraph.block_app.framework.AbstractBlockFactory; |
| import org.apache.giraph.block_app.framework.block.Block; |
| import org.apache.giraph.conf.GiraphConfiguration; |
| import org.apache.hadoop.io.LongWritable; |
| import org.apache.hadoop.io.NullWritable; |
| |
| /** |
| * Example Application of distributed independent set calculation |
| */ |
| public class DistributedIndependentSetBlockFactory extends AbstractBlockFactory<Object> { |
| @Override |
| public Block createBlock(GiraphConfiguration conf) { |
| return DistributedIndependentSet. |
| <LongWritable, DistributedIndependentSetVertexValue>independentSets( |
| getVertexIDClass(conf), |
| (vertex) -> vertex.getValue().getIndependentSetID(), |
| (vertex, value) -> vertex.getValue().setIndependentSetID(value) |
| ); |
| } |
| |
| @Override |
| public Object createExecutionStage(GiraphConfiguration conf) { |
| return new Object(); |
| } |
| |
| @Override |
| protected Class<LongWritable> getVertexIDClass(GiraphConfiguration conf) { |
| return LongWritable.class; |
| } |
| |
| @Override |
| protected Class<DistributedIndependentSetVertexValue> getVertexValueClass( |
| GiraphConfiguration conf) { |
| return DistributedIndependentSetVertexValue.class; |
| } |
| |
| @Override |
| protected Class<NullWritable> getEdgeValueClass(GiraphConfiguration conf) { |
| return NullWritable.class; |
| } |
| } |