/*
* 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.spark.structure.io;
import org.apache.commons.configuration.Configuration;
import org.apache.spark.api.java.JavaPairRDD;
import org.apache.spark.api.java.JavaSparkContext;
import org.apache.tinkerpop.gremlin.hadoop.structure.io.VertexWritable;
import org.apache.tinkerpop.gremlin.structure.T;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.apache.tinkerpop.gremlin.structure.util.star.StarGraph;
import scala.Tuple2;
import java.util.ArrayList;
import java.util.List;
/**
* @author Marko A. Rodriguez (http://markorodriguez.com)
*/
public final class ExampleInputRDD implements InputRDD {
static {
InputOutputHelper.registerInputOutputPair(ExampleInputRDD.class, ExampleOutputRDD.class);
}
@Override
public JavaPairRDD<Object, VertexWritable> readGraphRDD(final Configuration configuration, final JavaSparkContext sparkContext) {
final List<Vertex> list = new ArrayList<>();
list.add(StarGraph.open().addVertex(T.id, 1l, T.label, "person", "age", 29));
list.add(StarGraph.open().addVertex(T.id, 2l, T.label, "person", "age", 27));
list.add(StarGraph.open().addVertex(T.id, 4l, T.label, "person", "age", 32));
list.add(StarGraph.open().addVertex(T.id, 6l, T.label, "person", "age", 35));
return sparkContext.parallelize(list).mapToPair(vertex -> new Tuple2<>(vertex.id(), new VertexWritable(vertex)));
}
}