| /* |
| * 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.tinkerpop.gremlin.giraph.process.computer; |
| |
| import org.apache.giraph.graph.BasicComputation; |
| import org.apache.giraph.graph.Vertex; |
| import org.apache.hadoop.io.NullWritable; |
| import org.apache.tinkerpop.gremlin.hadoop.structure.io.ObjectWritable; |
| import org.apache.tinkerpop.gremlin.hadoop.structure.io.VertexWritable; |
| import org.apache.tinkerpop.gremlin.process.computer.VertexProgram; |
| import org.apache.tinkerpop.gremlin.process.computer.util.ComputerGraph; |
| |
| import java.io.IOException; |
| |
| /** |
| * @author Marko A. Rodriguez (http://markorodriguez.com) |
| */ |
| public final class GiraphComputation extends BasicComputation<ObjectWritable, VertexWritable, NullWritable, ObjectWritable> { |
| |
| public GiraphComputation() { |
| } |
| |
| @Override |
| public void compute(final Vertex<ObjectWritable, VertexWritable, NullWritable> vertex, final Iterable<ObjectWritable> messages) throws IOException { |
| final GiraphWorkerContext workerContext = this.getWorkerContext(); |
| final VertexProgram<?> vertexProgram = workerContext.getVertexProgramPool().take(); |
| vertexProgram.execute(ComputerGraph.vertexProgram(vertex.getValue().get(), vertexProgram), workerContext.getMessenger((GiraphVertex) vertex, this, messages.iterator()), workerContext.getMemory()); |
| workerContext.getVertexProgramPool().offer(vertexProgram); |
| } |
| } |