Package com.tinkerpop.pipes

Examples of com.tinkerpop.pipes.Pipe

28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
    }

    public static boolean optimizePipelineForVertexQuery(final GremlinPipeline pipeline, final Pipe pipe) {
        VertexQueryPipe queryPipe = null;
        for (int i = pipeline.size() - 1; i > 0; i--) {
            final Pipe temp = pipeline.get(i);
            if (temp instanceof VertexQueryPipe) {
                queryPipe = (VertexQueryPipe) temp;
                break;
            } else if (!(temp instanceof IdentityPipe))
                break;
        }

        if (null != queryPipe) {
            if (pipe instanceof EdgesVerticesPipe) {
                if (queryPipe.getResultElementClass().equals(Vertex.class))
                    return false;
                queryPipe.setResultingElementClass(Vertex.class);
            } else if (pipe instanceof VerticesVerticesPipe) {
                if (queryPipe.getResultElementClass().equals(Vertex.class))
                    return false;
                queryPipe.setDirection(((VerticesVerticesPipe) pipe).getDirection());
                queryPipe.setLabels(((VerticesVerticesPipe) pipe).getLabels());
                queryPipe.setBranchFactor(((VerticesVerticesPipe) pipe).getBranchFactor());
            } else if (pipe instanceof VerticesEdgesPipe) {
                if (queryPipe.getResultElementClass().equals(Vertex.class))
                    return false;
                queryPipe.setResultingElementClass(Edge.class);
                queryPipe.setDirection(((VerticesEdgesPipe) pipe).getDirection());
                queryPipe.setLabels(((VerticesEdgesPipe) pipe).getLabels());
                queryPipe.setBranchFactor(((VerticesEdgesPipe) pipe).getBranchFactor());
            } else if (pipe instanceof PropertyFilterPipe) {
                if (queryPipe.getResultElementClass().equals(Vertex.class))
                    return false;
                final PropertyFilterPipe temp = (PropertyFilterPipe) pipe;
                queryPipe.addHasContainer(new QueryPipe.HasContainer(temp.getKey(), temp.getPredicate(), temp.getValue()));
            } else if (pipe instanceof IntervalFilterPipe) {
                if (queryPipe.getResultElementClass().equals(Vertex.class))
                    return false;
                final IntervalFilterPipe temp = (IntervalFilterPipe) pipe;
                queryPipe.addIntervalContainer(new QueryPipe.IntervalContainer(temp.getKey(), temp.getStartValue(), temp.getEndValue()));
            } else if (pipe instanceof RangeFilterPipe) {
                queryPipe.setLowRange(((RangeFilterPipe) pipe).getLowRange());
                queryPipe.setHighRange(((RangeFilterPipe) pipe).getHighRange());
            }
            pipeline.addPipe(new IdentityPipe());
View Full Code Here
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
    }

    private static boolean optimizePipelineForGraphQuery(final GremlinPipeline pipeline, final Pipe pipe) {
        GraphQueryPipe queryPipe = null;
        for (int i = pipeline.size() - 1; i > 0; i--) {
            final Pipe temp = pipeline.get(i);
            if (temp instanceof GraphQueryPipe) {
                queryPipe = (GraphQueryPipe) temp;
                break;
            } else if (!(temp instanceof IdentityPipe))
                break;
        }

        if (null != queryPipe) {
            if (pipe instanceof PropertyFilterPipe) {
                final PropertyFilterPipe temp = (PropertyFilterPipe) pipe;
                queryPipe.addHasContainer(new QueryPipe.HasContainer(temp.getKey(), temp.getPredicate(), temp.getValue()));
            } else if (pipe instanceof IntervalFilterPipe) {
                final IntervalFilterPipe temp = (IntervalFilterPipe) pipe;
                queryPipe.addIntervalContainer(new QueryPipe.IntervalContainer(temp.getKey(), temp.getStartValue(), temp.getEndValue()));
            } else if (pipe instanceof RangeFilterPipe) {
                queryPipe.setLowRange(((RangeFilterPipe) pipe).getLowRange());
                queryPipe.setHighRange(((RangeFilterPipe) pipe).getHighRange());
            }
            pipeline.addPipe(new IdentityPipe());
View Full Code Here
217
218
219
220
221
222
223
224
225
        if (key.equals(Tokens.ID)) {
            return this.add(new IdFilterPipe(predicate, value));
        } else if (key.equals(Tokens.LABEL)) {
            return this.add(new LabelFilterPipe(predicate, value));
        } else {
            final Pipe pipe = new PropertyFilterPipe(key, predicate, value);
            return this.doQueryOptimization ? GremlinFluentUtility.optimizePipelineForQuery(this, pipe) : this.add(pipe);
        }
    }
View Full Code Here
256
257
258
259
260
261
262
263
     * @param startValue the start of the interval (inclusive)
     * @param endValue   the end of the interval (exclusive)
     * @return the extended Pipeline
     */
    public GremlinPipeline<S, ? extends Element> interval(final String key, final Comparable startValue, final Comparable endValue) {
        final Pipe pipe = new IntervalFilterPipe<Element>(key, startValue, endValue);
        return this.doQueryOptimization ? GremlinFluentUtility.optimizePipelineForQuery(this, pipe) : this.add(pipe);
    }
View Full Code Here
767
768
769
770
771
772
773
774
775
776
777
     * @param low  the low end of the range
     * @param high the high end of the range
     * @return the extended Pipeline
     */
    public GremlinPipeline<S, E> range(final int low, final int high) {
        final Pipe pipe = new RangeFilterPipe<E>(low, high);
        if (!this.doQueryOptimization)
            return this.add(pipe);
        else {
            return GremlinFluentUtility.optimizePipelineForQuery(this, pipe);
        }
View Full Code Here
12
13
14
15
16
17
18
19
20
21
22
23
24
public class GremlinStartPipeTest extends TestCase {

    public void testNoGraphInPath() {
        Graph graph = TinkerGraphFactory.createTinkerGraph();

        Pipe pipe = new GremlinStartPipe(graph);
        pipe.enablePath(true);
        assertEquals(pipe.getCurrentPath().size(), 0);

        pipe = new StartPipe(graph);
        pipe.enablePath(true);
        assertEquals(pipe.getCurrentPath().size(), 1);
    }
View Full Code Here
24
25
26
27
28
29
30
31
32
33
34
35
36
        this.total = pipes.size();
    }

    public S processNextStart() {
        while (true) {
            final Pipe pipe = this.pipes.get(this.current);
            if (pipe.hasNext()) {
                return (S) pipe.next();
            } else {
                this.current = (this.current + 1) % this.total;
                if (this.current == 0) {
                    throw FastNoSuchElementException.instance();
                }
View Full Code Here
26
27
28
29
30
31
32
33
34
35
36
37
38
    public S processNextStart() {
        int counter = 0;
        while (true) {
            counter++;
            final Pipe currentPipe = this.pipes.get(this.current);
            if (currentPipe.hasNext()) {
                final S s = (S) currentPipe.next();
                this.current = (this.current + 1) % this.total;
                return s;
            } else if (counter == this.total) {
                throw FastNoSuchElementException.instance();
            } else {
View Full Code Here
75
76
77
78
79
80
81
82
83
84
85
     * @return the removed pipes
     */
    public static List<Pipe> removePreviousPipes(final Pipeline pipeline, final String namedStep) {
        final List<Pipe> previousPipes = new ArrayList<Pipe>();
        for (int i = pipeline.size() - 1; i >= 0; i--) {
            final Pipe pipe = pipeline.get(i);
            if (pipe instanceof AsPipe && ((AsPipe) pipe).getName().equals(namedStep)) {
                break;
            } else {
                previousPipes.add(0, pipe);
            }
View Full Code Here
65
66
67
68
69
70
71
72
73
74
    private Iterable<Edge> getOutEdges(String... labels) {
        if (labels.length == 0) {
            return this.outEdges;
        } else {
            Pipe pipe = new LabelFilterPipe(Compare.EQUAL, labels);
            pipe.setStarts(this.outEdges);
            return pipe;
        }
    }
View Full Code Here
TOP

Related Classes of com.tinkerpop.pipes.Pipe

  • com.tinkerpop.gremlin.java.GremlinFluentUtility
  • com.tinkerpop.gremlin.java.GremlinPipeline
  • com.tinkerpop.gremlin.java.GremlinStartPipeTest
  • com.tinkerpop.pipes.branch.ExhaustMergePipe
  • com.tinkerpop.pipes.branch.FairMergePipe
  • com.tinkerpop.pipes.util.FluentUtility
  • com.tinkerpop.rexster.MockVertex
    • Copyright © 2018 www.massapicom. All rights reserved.
    All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.