Java Code Examples for org.apache.flink.graph.Edge#getTarget()

The following examples show how to use org.apache.flink.graph.Edge#getTarget() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: Summarization.java From Flink-CEPplus with Apache License 2.0

6 votes

@Override
public void reduce(Iterable<Edge<K, EV>> values, Collector<Edge<K, EdgeValue<EV>>> out) throws Exception {
	K sourceVertexId = null;
	K targetVertexId = null;
	EV edgeGroupValue = null;
	Long edgeGroupCount = 0L;
	boolean isFirstElement = true;

	for (Edge<K, EV> edge : values) {
		if (isFirstElement) {
			sourceVertexId = edge.getSource();
			targetVertexId = edge.getTarget();
			edgeGroupValue = edge.getValue();
			isFirstElement = false;
		}
		edgeGroupCount++;
	}
	reuseEdgeValue.setEdgeGroupValue(edgeGroupValue);
	reuseEdgeValue.setEdgeGroupCount(edgeGroupCount);
	reuseEdge.setSource(sourceVertexId);
	reuseEdge.setTarget(targetVertexId);
	reuseEdge.setValue(reuseEdgeValue);
	out.collect(reuseEdge);
}

Example 2

Source File: Summarization.java From flink with Apache License 2.0

6 votes

@Override
public void reduce(Iterable<Edge<K, EV>> values, Collector<Edge<K, EdgeValue<EV>>> out) throws Exception {
	K sourceVertexId = null;
	K targetVertexId = null;
	EV edgeGroupValue = null;
	Long edgeGroupCount = 0L;
	boolean isFirstElement = true;

	for (Edge<K, EV> edge : values) {
		if (isFirstElement) {
			sourceVertexId = edge.getSource();
			targetVertexId = edge.getTarget();
			edgeGroupValue = edge.getValue();
			isFirstElement = false;
		}
		edgeGroupCount++;
	}
	reuseEdgeValue.setEdgeGroupValue(edgeGroupValue);
	reuseEdgeValue.setEdgeGroupCount(edgeGroupCount);
	reuseEdge.setSource(sourceVertexId);
	reuseEdge.setTarget(targetVertexId);
	reuseEdge.setValue(reuseEdgeValue);
	out.collect(reuseEdge);
}

Example 3

Source File: Summarization.java From flink with Apache License 2.0

6 votes

@Override
public void reduce(Iterable<Edge<K, EV>> values, Collector<Edge<K, EdgeValue<EV>>> out) throws Exception {
	K sourceVertexId = null;
	K targetVertexId = null;
	EV edgeGroupValue = null;
	Long edgeGroupCount = 0L;
	boolean isFirstElement = true;

	for (Edge<K, EV> edge : values) {
		if (isFirstElement) {
			sourceVertexId = edge.getSource();
			targetVertexId = edge.getTarget();
			edgeGroupValue = edge.getValue();
			isFirstElement = false;
		}
		edgeGroupCount++;
	}
	reuseEdgeValue.setEdgeGroupValue(edgeGroupValue);
	reuseEdgeValue.setEdgeGroupCount(edgeGroupCount);
	reuseEdge.setSource(sourceVertexId);
	reuseEdge.setTarget(targetVertexId);
	reuseEdge.setValue(reuseEdgeValue);
	out.collect(reuseEdge);
}

Example 4

Source File: MusicProfiles.java From Flink-CEPplus with Apache License 2.0

5 votes

public void iterateEdges(Vertex<String, NullValue> vertex,
		Iterable<Edge<String, Integer>> edges, Collector<Tuple2<String, String>> out) throws Exception {

	int maxPlaycount = 0;
	String topSong = "";
	for (Edge<String, Integer> edge : edges) {
		if (edge.getValue() > maxPlaycount) {
			maxPlaycount = edge.getValue();
			topSong = edge.getTarget();
		}
	}
	out.collect(new Tuple2<>(vertex.getId(), topSong));
}

Example 5

Source File: ReduceOnEdgesMethodsITCase.java From Flink-CEPplus with Apache License 2.0

5 votes

@Override
public void iterateEdges(Vertex<Long, Long> v,
		Iterable<Edge<Long, Long>> edges, Collector<Tuple2<Long, Long>> out) throws Exception {

	long weight = Long.MAX_VALUE;
	long minNeighborId = 0;

	for (Edge<Long, Long> edge : edges) {
		if (edge.getValue() < weight) {
			weight = edge.getValue();
			minNeighborId = edge.getTarget();
		}
	}
	out.collect(new Tuple2<>(v.getId(), minNeighborId));
}

Example 6

Source File: MusicProfiles.java From flink with Apache License 2.0

5 votes

public void iterateEdges(Vertex<String, NullValue> vertex,
		Iterable<Edge<String, Integer>> edges, Collector<Tuple2<String, String>> out) throws Exception {

	int maxPlaycount = 0;
	String topSong = "";
	for (Edge<String, Integer> edge : edges) {
		if (edge.getValue() > maxPlaycount) {
			maxPlaycount = edge.getValue();
			topSong = edge.getTarget();
		}
	}
	out.collect(new Tuple2<>(vertex.getId(), topSong));
}

Example 7

Source File: MusicProfiles.java From flink with Apache License 2.0

5 votes

public void iterateEdges(Vertex<String, NullValue> vertex,
		Iterable<Edge<String, Integer>> edges, Collector<Tuple2<String, String>> out) throws Exception {

	int maxPlaycount = 0;
	String topSong = "";
	for (Edge<String, Integer> edge : edges) {
		if (edge.getValue() > maxPlaycount) {
			maxPlaycount = edge.getValue();
			topSong = edge.getTarget();
		}
	}
	out.collect(new Tuple2<>(vertex.getId(), topSong));
}

Example 8

Source File: ReduceOnEdgesMethodsITCase.java From flink with Apache License 2.0

5 votes

@Override
public void iterateEdges(Vertex<Long, Long> v,
		Iterable<Edge<Long, Long>> edges, Collector<Tuple2<Long, Long>> out) throws Exception {

	long weight = Long.MAX_VALUE;
	long minNeighborId = 0;

	for (Edge<Long, Long> edge : edges) {
		if (edge.getValue() < weight) {
			weight = edge.getValue();
			minNeighborId = edge.getTarget();
		}
	}
	out.collect(new Tuple2<>(v.getId(), minNeighborId));
}

Example 9

Source File: ReduceOnEdgesMethodsITCase.java From flink with Apache License 2.0

5 votes

@Override
public void iterateEdges(Vertex<Long, Long> v,
		Iterable<Edge<Long, Long>> edges, Collector<Tuple2<Long, Long>> out) throws Exception {

	long weight = Long.MAX_VALUE;
	long minNeighborId = 0;

	for (Edge<Long, Long> edge : edges) {
		if (edge.getValue() < weight) {
			weight = edge.getValue();
			minNeighborId = edge.getTarget();
		}
	}
	out.collect(new Tuple2<>(v.getId(), minNeighborId));
}

Example 10

Source File: JoinWithEdgesITCase.java From flink with Apache License 2.0

4 votes

public Tuple2<Long, Boolean> map(Edge<Long, Long> edge) throws Exception {
	return new Tuple2<>(edge.getTarget(), true);
}

Example 11

Source File: JoinWithEdgesITCase.java From flink with Apache License 2.0

4 votes

public Tuple2<Long, Long> map(Edge<Long, Long> edge) throws Exception {
	return new Tuple2<>(edge.getTarget(), edge.getValue());
}

Example 12

Source File: JoinWithEdgesITCase.java From flink with Apache License 2.0

4 votes

public Tuple3<Long, Long, Boolean> map(Edge<Long, Long> edge) throws Exception {
	return new Tuple3<>(edge.getSource(), edge.getTarget(), true);
}

Example 13

Source File: SimpleEdgeStream.java From gelly-streaming with Apache License 2.0

4 votes

public Edge<K, NV> map(Edge<K, EV> edge) throws Exception {
	return new Edge<>(edge.getSource(), edge.getTarget(), innerMapper.map(edge));
}

Example 14

Source File: BroadcastTriangleCount.java From gelly-streaming with Apache License 2.0

4 votes

@Override
public void flatMap(Edge<Long, NullValue> edge, Collector<TriangleEstimate> out) throws Exception {
	// Update edge count
	edgeCount++;

	int localBetaSum = 0;

	// Process the edge for all instances
	for (SampleTriangleState state : states) {

		// Flip a coin and with probability 1/i sample a candidate
		if (Coin.flip(state)) {
			state.srcVertex = edge.getSource();
			state.trgVertex = edge.getTarget();

			// Randomly sample the third vertex from V \ {src, trg}
			while (true) {
				state.thirdVertex = (int) Math.floor(Math.random() * vertices);

				if (state.thirdVertex != state.srcVertex && state.thirdVertex != state.trgVertex) {
					break;
				}
			}

			state.srcEdgeFound = false;
			state.trgEdgeFound = false;
			state.beta = 0;
		}

		if (state.beta == 0) {
			// Check if any of the two remaining edges in the candidate has been found
			if ((edge.getSource() == state.srcVertex && edge.getTarget() == state.thirdVertex)
					|| (edge.getSource() == state.thirdVertex && edge.getTarget() == state.srcVertex)) {
				state.srcEdgeFound = true;
			}

			if ((edge.getSource() == state.trgVertex && edge.getTarget() == state.thirdVertex)
					|| (edge.getSource() == state.thirdVertex && edge.getTarget() == state.trgVertex)) {
				state.trgEdgeFound = true;
			}

			state.beta = (state.srcEdgeFound && state.trgEdgeFound) ? 1 : 0;
		}

		if (state.beta == 1) {
			localBetaSum++;
		}
	}

	if (localBetaSum != previousResult) {
		previousResult = localBetaSum;

		int source = getRuntimeContext().getIndexOfThisSubtask();
		out.collect(new TriangleEstimate(source, edgeCount, localBetaSum));
	}
}

Example 15

Source File: JoinWithEdgesITCase.java From flink with Apache License 2.0

4 votes

public Tuple2<Long, Boolean> map(Edge<Long, Long> edge) throws Exception {
	return new Tuple2<>(edge.getTarget(), true);
}

Example 16

Source File: JoinWithEdgesITCase.java From flink with Apache License 2.0

4 votes

public Tuple2<Long, Long> map(Edge<Long, Long> edge) throws Exception {
	return new Tuple2<>(edge.getTarget(), edge.getValue());
}

Example 17

Source File: JoinWithEdgesITCase.java From flink with Apache License 2.0

4 votes

public Tuple3<Long, Long, Boolean> map(Edge<Long, Long> edge) throws Exception {
	return new Tuple3<>(edge.getSource(), edge.getTarget(), true);
}

Example 18

Source File: JoinWithEdgesITCase.java From Flink-CEPplus with Apache License 2.0

4 votes

public Tuple2<Long, Boolean> map(Edge<Long, Long> edge) throws Exception {
	return new Tuple2<>(edge.getTarget(), true);
}

Example 19

Source File: JoinWithEdgesITCase.java From Flink-CEPplus with Apache License 2.0

4 votes

public Tuple2<Long, Long> map(Edge<Long, Long> edge) throws Exception {
	return new Tuple2<>(edge.getTarget(), edge.getValue());
}

Example 20

Source File: JoinWithEdgesITCase.java From Flink-CEPplus with Apache License 2.0

4 votes

public Tuple3<Long, Long, Boolean> map(Edge<Long, Long> edge) throws Exception {
	return new Tuple3<>(edge.getSource(), edge.getTarget(), true);
}