Examples of org.apache.lucene.search.Collector.collect()

Class org.apache.lucene.search.Collector

Examples of org.apache.lucene.search.Collector.collect()

org.apache.lucene.search.Collector.collect()
Called once for every document matching a query, with the unbased document number.
Note: This is called in an inner search loop. For good search performance, implementations of this method should not call {@link Searcher#doc(int)} or{@link org.apache.lucene.index.IndexReader#document(int)} on every hit.Doing so can slow searches by an order of magnitude or more.

    // Tests that the collector handles some null collectors well. If it
    // doesn't, an NPE would be thrown.
    Collector c = MultiCollector.wrap(new DummyCollector(), null, new DummyCollector());
    assertTrue(c instanceof MultiCollector);
    assertTrue(c.acceptsDocsOutOfOrder());
    c.collect(1);
    c.setNextReader(null);
    c.setScorer(null);
  }


  @Test

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    // Tests that the collector handles some null collectors well. If it
    // doesn't, an NPE would be thrown.
    DummyCollector[] dcs = new DummyCollector[] { new DummyCollector(), new DummyCollector() };
    Collector c = MultiCollector.wrap(dcs);
    assertTrue(c.acceptsDocsOutOfOrder());
    c.collect(1);
    c.setNextReader(null);
    c.setScorer(null);


    for (DummyCollector dc : dcs) {
      assertTrue(dc.acceptsDocsOutOfOrderCalled);

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    // Tests that the collector handles some null collectors well. If it
    // doesn't, an NPE would be thrown.
    Collector c = MultiCollector.wrap(new DummyCollector(), null, new DummyCollector());
    assertTrue(c instanceof MultiCollector);
    assertTrue(c.acceptsDocsOutOfOrder());
    c.collect(1);
    c.setNextReader(null, 0);
    c.setScorer(null);
  }


  @Test

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    // Tests that the collector handles some null collectors well. If it
    // doesn't, an NPE would be thrown.
    DummyCollector[] dcs = new DummyCollector[] { new DummyCollector(), new DummyCollector() };
    Collector c = MultiCollector.wrap(dcs);
    assertTrue(c.acceptsDocsOutOfOrder());
    c.collect(1);
    c.setNextReader(null, 0);
    c.setScorer(null);


    for (DummyCollector dc : dcs) {
      assertTrue(dc.acceptsDocsOutOfOrderCalled);

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