本文整理汇总了Java中org.apache.flink.examples.java.graph.ConnectedComponents.DuplicateValue类的典型用法代码示例。如果您正苦于以下问题：Java DuplicateValue类的具体用法？Java DuplicateValue怎么用？Java DuplicateValue使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
DuplicateValue类属于org.apache.flink.examples.java.graph.ConnectedComponents包，在下文中一共展示了DuplicateValue类的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: testProgram
import org.apache.flink.examples.java.graph.ConnectedComponents.DuplicateValue; //导入依赖的package包/类
@Override
protected void testProgram() throws Exception {
// set up execution environment
ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
// read vertex and edge data
DataSet<Long> vertices = env.fromElements(ConnectedComponentsData.getEnumeratingVertices(NUM_VERTICES).split("\n"))
.map(new VertexParser());
DataSet<Tuple2<Long, Long>> edges = env.fromElements(ConnectedComponentsData.getRandomOddEvenEdges(NUM_EDGES, NUM_VERTICES, SEED).split("\n"))
.flatMap(new EdgeParser());
// assign the initial components (equal to the vertex id)
DataSet<Tuple2<Long, Long>> verticesWithInitialId = vertices.map(new DuplicateValue<Long>());
// open a delta iteration
DeltaIteration<Tuple2<Long, Long>, Tuple2<Long, Long>> iteration =
verticesWithInitialId.iterateDelta(verticesWithInitialId, 100, 0);
// apply the step logic: join with the edges, select the minimum neighbor, update if the component of the candidate is smaller
DataSet<Tuple2<Long, Long>> changes = iteration
.getWorkset().join(edges).where(0).equalTo(0).with(new NeighborWithComponentIDJoin())
.coGroup(iteration.getSolutionSet()).where(0).equalTo(0)
.with(new MinIdAndUpdate());
// close the delta iteration (delta and new workset are identical)
DataSet<Tuple2<Long, Long>> result = iteration.closeWith(changes, changes);
// emit result
List<Tuple2<Long, Long>> resutTuples = new ArrayList<>();
result.output(new LocalCollectionOutputFormat<>(resutTuples));
env.execute();
}
示例2: testProgram
import org.apache.flink.examples.java.graph.ConnectedComponents.DuplicateValue; //导入依赖的package包/类
@Override
protected void testProgram() throws Exception {
// set up execution environment
ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
// read vertex and edge data
DataSet<Long> vertices = env.fromElements(ConnectedComponentsData.getEnumeratingVertices(NUM_VERTICES).split("\n"))
.map(new VertexParser());
DataSet<Tuple2<Long, Long>> edges = env.fromElements(ConnectedComponentsData.getRandomOddEvenEdges(NUM_EDGES, NUM_VERTICES, SEED).split("\n"))
.flatMap(new EdgeParser());
// assign the initial components (equal to the vertex id)
DataSet<Tuple2<Long, Long>> verticesWithInitialId = vertices.map(new DuplicateValue<Long>());
// open a delta iteration
DeltaIteration<Tuple2<Long, Long>, Tuple2<Long, Long>> iteration =
verticesWithInitialId.iterateDelta(verticesWithInitialId, 100, 0);
// apply the step logic: join with the edges, select the minimum neighbor, update if the component of the candidate is smaller
DataSet<Tuple2<Long, Long>> changes = iteration
.getWorkset().join(edges).where(0).equalTo(0).with(new NeighborWithComponentIDJoin())
.coGroup(iteration.getSolutionSet()).where(0).equalTo(0)
.with(new MinIdAndUpdate());
// close the delta iteration (delta and new workset are identical)
DataSet<Tuple2<Long, Long>> result = iteration.closeWith(changes, changes);
// emit result
List<Tuple2<Long,Long>> resutTuples = new ArrayList<Tuple2<Long,Long>>();
result.output(new LocalCollectionOutputFormat<Tuple2<Long,Long>>(resutTuples));
env.execute();
}