/*
* 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.io.gora;
import java.io.IOException;
import java.util.Iterator;
import java.util.Map;
import org.apache.giraph.edge.Edge;
import org.apache.giraph.graph.Vertex;
import org.apache.giraph.io.VertexWriter;
import org.apache.giraph.io.gora.generated.GVertex;
import org.apache.giraph.io.gora.generated.GVertexResult;
import org.apache.gora.persistency.Persistent;
import org.apache.hadoop.io.DoubleWritable;
import org.apache.hadoop.io.FloatWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.mapreduce.TaskAttemptContext;
import org.junit.Assert;
/**
* Implementation of a specific reader for a generated data bean.
*/
public class GoraTestVertexOutputFormat
extends GoraVertexOutputFormat<LongWritable, DoubleWritable,
FloatWritable> {
/**
* DEfault constructor
*/
public GoraTestVertexOutputFormat() {
}
@Override
public VertexWriter<LongWritable, DoubleWritable, FloatWritable>
createVertexWriter(TaskAttemptContext context)
throws IOException, InterruptedException {
return new GoraGVertexVertexWriter();
}
/**
* Gora vertex writer.
*/
protected class GoraGVertexVertexWriter extends GoraVertexWriter {
@Override
protected Persistent getGoraVertex(
Vertex<LongWritable, DoubleWritable, FloatWritable> vertex) {
GVertexResult tmpGVertex = new GVertexResult();
tmpGVertex.setVertexId(vertex.getId().toString());
tmpGVertex.setVertexValue(Float.parseFloat(vertex.getValue().toString()));
Iterator<Edge<LongWritable, FloatWritable>> it =
vertex.getEdges().iterator();
while (it.hasNext()) {
Edge<LongWritable, FloatWritable> edge = it.next();
tmpGVertex.getEdges().put(
edge.getTargetVertexId().toString(),
edge.getValue().toString());
}
getLogger().debug("GoraObject created: " + tmpGVertex.toString());
return tmpGVertex;
}
@SuppressWarnings("unchecked")
@Override
public void writeVertex(
Vertex<LongWritable, DoubleWritable, FloatWritable> vertex)
throws IOException, InterruptedException {
super.writeVertex(vertex);
// Asserting
Assert.assertEquals(createVertex(vertex.getId().toString(), null),
getDataStore().get(vertex.getId().toString()));
}
/**
* Creates a vertex using an id and a set of edges.
* @param id Vertex id.
* @param edges Set of edges.
* @return GVertex created.
*/
public GVertexResult createVertex(String id, Map<String, String> edges) {
GVertexResult newVrtx = new GVertexResult();
newVrtx.setVertexId(id);
if (edges != null) {
for (String edgeId : edges.keySet())
newVrtx.getEdges().put(edgeId, edges.get(edgeId));
}
return newVrtx;
}
@Override
protected Object getGoraKey(
Vertex<LongWritable, DoubleWritable, FloatWritable> vertex) {
String goraKey = String.valueOf(vertex.getId());
return goraKey;
}
}
}