Examples of org.apache.lucene.search.spans.Spans

org.apache.lucene.search.spans.Spans
Expert: an enumeration of span matches. Used to implement span searching. Each span represents a range of term positions within a document. Matches are enumerated in order, by increasing document number, within that by increasing start position and finally by increasing end position.

    for (int i = 0; i < hits.scoreDocs.length; i++) {
      ScoreDoc doc = hits.scoreDocs[i];
      assertTrue(doc.score + " does not equal: " + 1, doc.score == 1);
    }
    CheckHits.checkExplanations(query, PayloadHelper.FIELD, searcher, true);
    Spans spans = query.getSpans(searcher.getIndexReader());
    assertTrue("spans is null and it shouldn't be", spans != null);
    assertTrue("spans is not an instanceof " + TermSpans.class, spans instanceof TermSpans);
    /*float score = hits.score(0);
    for (int i =1; i < hits.length(); i++)
    {

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        assertTrue(doc.score + " does not equal: " + 2, doc.score == 2);
      }
    }
    assertTrue(numTens + " does not equal: " + 10, numTens == 10);
    CheckHits.checkExplanations(query, "field", searcher, true);
    Spans spans = query.getSpans(searcher.getIndexReader());
    assertTrue("spans is null and it shouldn't be", spans != null);
    assertTrue("spans is not an instanceof " + TermSpans.class, spans instanceof TermSpans);
    //should be two matches per document
    int count = 0;
    //100 hits times 2 matches per hit, we should have 200 in count
    while (spans.next()) {
      count++;
    }
    assertTrue(count + " does not equal: " + 200, count == 200);
  }

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        assertTrue(doc.score + " does not equal: " + 2, doc.score == 2);
      }
    }
    assertTrue(numTens + " does not equal: " + 10, numTens == 10);
    CheckHits.checkExplanations(query, "field", searcher, true);
    Spans spans = query.getSpans(searcher.getIndexReader());
    assertTrue("spans is null and it shouldn't be", spans != null);
    assertTrue("spans is not an instanceof " + TermSpans.class, spans instanceof TermSpans);
    //should be two matches per document
    int count = 0;
    //100 hits times 2 matches per hit, we should have 200 in count
    while (spans.next()) {
      count++;
    }
  }

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    for (int i = 0; i < hits.scoreDocs.length; i++) {
      ScoreDoc doc = hits.scoreDocs[i];
      assertTrue(doc.score + " does not equal: " + 1, doc.score == 1);
    }
    CheckHits.checkExplanations(query, PayloadHelper.FIELD, searcher, true);
    Spans spans = query.getSpans(searcher.getIndexReader());
    assertTrue("spans is null and it shouldn't be", spans != null);
    assertTrue("spans is not an instanceof " + TermSpans.class, spans instanceof TermSpans);
    /*float score = hits.score(0);
    for (int i =1; i < hits.length(); i++)
    {

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        assertTrue(doc.score + " does not equal: " + 2, doc.score == 2);
      }
    }
    assertTrue(numTens + " does not equal: " + 10, numTens == 10);
    CheckHits.checkExplanations(query, "field", searcher, true);
    Spans spans = query.getSpans(searcher.getIndexReader());
    assertTrue("spans is null and it shouldn't be", spans != null);
    assertTrue("spans is not an instanceof " + TermSpans.class, spans instanceof TermSpans);
    //should be two matches per document
    int count = 0;
    //100 hits times 2 matches per hit, we should have 200 in count
    while (spans.next()) {
      count++;
    }
    assertTrue(count + " does not equal: " + 200, count == 200);
  }

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    while (it.hasNext()) {
      String field = (String) it.next();


      IndexReader reader = getReaderForField(field);
      final Spans spans;
      if (mustRewriteQuery) {
        spans = ((SpanQuery) queries.get(field)).getSpans(reader);
      } else {
        spans = spanQuery.getSpans(reader);
      }


      // collect span positions
      while (spans.next()) {
        spanPositions.add(new PositionSpan(spans.start(), spans.end() - 1));
      }
      
    }


    if (spanPositions.size() == 0) {

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    SpanNearQuery snq = new SpanNearQuery(sqs, 30, false);


    count = 0;
    boolean sawZero = false;
    //System.out.println("\ngetPayloadSpans test");
    Spans pspans = snq.getSpans(is.getIndexReader());
    while (pspans.next()) {
      //System.out.println(pspans.doc() + " - " + pspans.start() + " - "+ pspans.end());
      Collection payloads = pspans.getPayload();
      sawZero |= pspans.start() == 0;
      for (Iterator it = payloads.iterator(); it.hasNext();) {
        count++;
        it.next();
        //System.out.println(new String((byte[]) it.next()));
      }
    }
    assertEquals(5, count);
    assertTrue(sawZero);


    //System.out.println("\ngetSpans test");
    Spans spans = snq.getSpans(is.getIndexReader());
    count = 0;
    sawZero = false;
    while (spans.next()) {
      count++;
      sawZero |= spans.start() == 0;
      //System.out.println(spans.doc() + " - " + spans.start() + " - " + spans.end());
    }
    assertEquals(4, count);
    assertTrue(sawZero);

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    SpanNearQuery snq = new SpanNearQuery(sqs, 30, false);


    count = 0;
    boolean sawZero = false;
    //System.out.println("\ngetPayloadSpans test");
    Spans pspans = snq.getSpans(is.getIndexReader());
    while (pspans.next()) {
      //System.out.println(pspans.doc() + " - " + pspans.start() + " - "+ pspans.end());
      Collection<byte[]> payloads = pspans.getPayload();
      sawZero |= pspans.start() == 0;
      count += payloads.size();
    }
    assertEquals(5, count);
    assertTrue(sawZero);


    //System.out.println("\ngetSpans test");
    Spans spans = snq.getSpans(is.getIndexReader());
    count = 0;
    sawZero = false;
    while (spans.next()) {
      count++;
      sawZero |= spans.start() == 0;
      //System.out.println(spans.doc() + " - " + spans.start() + " - " + spans.end());
    }
    assertEquals(4, count);
    assertTrue(sawZero);

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    }
  }


  private void getPayloads(Collection<byte []> payloads, SpanQuery query)
      throws IOException {
    Spans spans = query.getSpans(reader);


    while (spans.next() == true) {
      if (spans.isPayloadAvailable()) {
        Collection<byte[]> payload = spans.getPayload();
        for (byte [] bytes : payload) {
          payloads.add(bytes);
        }


      }

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    List<PositionSpan> spanPositions = new ArrayList<PositionSpan>();


    for (final String field : fieldNames) {


      IndexReader reader = getReaderForField(field);
      final Spans spans;
      if (mustRewriteQuery) {
        spans = queries.get(field).getSpans(reader);
      } else {
        spans = spanQuery.getSpans(reader);
      }




      // collect span positions
      while (spans.next()) {
        spanPositions.add(new PositionSpan(spans.start(), spans.end() - 1));
      }
      
    }


    if (spanPositions.size() == 0) {

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