Package org.apache.lucene.search.spans

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

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  public SpanQuery makeSpanClause() {
    SpanQuery [] spanQueries = new SpanQuery[size()];
    Iterator<SpanQuery> sqi = weightBySpanQuery.keySet().iterator();
    int i = 0;
    while (sqi.hasNext()) {
      SpanQuery sq = sqi.next();
      sq.setBoost(weightBySpanQuery.get(sq).floatValue());
      spanQueries[i++] = sq;
    }
   
    if (spanQueries.length == 1)
      return spanQueries[0];
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      }

      SpanQuery[] includeClauses = positiveClauses
          .toArray(new SpanQuery[positiveClauses.size()]);

      SpanQuery include = null;
      if (includeClauses.length == 1) {
        include = includeClauses[0]; // only one positive clause
      } else {
        // need to increase slop factor based on gaps introduced by
        // negatives
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  public String toString(String field) {
    StringBuilder buffer = new StringBuilder();
    buffer.append("payloadNear([");
    Iterator<SpanQuery> i = clauses.iterator();
    while (i.hasNext()) {
      SpanQuery clause = i.next();
      buffer.append(clause.toString(field));
      if (i.hasNext()) {
        buffer.append(", ");
      }
    }
    buffer.append("], ");
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    return searcher.search(query, null, 1000).totalHits;
  }

  private int  spanRegexQueryNrHits(String regex1, String regex2, int slop, boolean ordered) throws Exception {
    SpanQuery srq1 = new SpanMultiTermQueryWrapper<RegexQuery>(new RegexQuery(newTerm(regex1)));
    SpanQuery srq2 = new SpanMultiTermQueryWrapper<RegexQuery>(new RegexQuery(newTerm(regex2)));
    SpanNearQuery query = new SpanNearQuery( new SpanQuery[]{srq1, srq2}, slop, ordered);

    return searcher.search(query, null, 1000).totalHits;
  }
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    writer.forceMerge(1);
    writer.close();

    IndexReader reader = DirectoryReader.open(directory);
    IndexSearcher searcher = newSearcher(reader);
    SpanQuery srq = new SpanMultiTermQueryWrapper<RegexQuery>(new RegexQuery(new Term("field", "aut.*")));
    SpanFirstQuery sfq = new SpanFirstQuery(srq, 1);
    // SpanNearQuery query = new SpanNearQuery(new SpanQuery[] {srq, stq}, 6,
    // true);
    int numHits = searcher.search(sfq, null, 1000).totalHits;
    assertEquals(1, numHits);
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  }

  // LUCENE-3831
  public void testNullPointerException() throws IOException {
    RegexpQuery regex = new RegexpQuery(new Term("field", "worl."));
    SpanQuery wrappedquery = new SpanMultiTermQueryWrapper<RegexpQuery>(regex);
       
    MemoryIndex mindex = new MemoryIndex(random().nextBoolean(),  random().nextInt(50) * 1024 * 1024);
    mindex.addField("field", new MockAnalyzer(random()).tokenStream("field", "hello there"));

    // This throws an NPE
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  }
   
  // LUCENE-3831
  public void testPassesIfWrapped() throws IOException {
    RegexpQuery regex = new RegexpQuery(new Term("field", "worl."));
    SpanQuery wrappedquery = new SpanOrQuery(new SpanMultiTermQueryWrapper<RegexpQuery>(regex));

    MemoryIndex mindex = new MemoryIndex(random().nextBoolean(),  random().nextInt(50) * 1024 * 1024);
    mindex.addField("field", new MockAnalyzer(random()).tokenStream("field", "hello there"));

    // This passes though
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      @Override
      protected Analyzer getIndexAnalyzer(String field) {
        return analyzer;
      }
    };
    SpanQuery childQuery = new SpanMultiTermQueryWrapper<WildcardQuery>(new WildcardQuery(new Term("body", "te*")));
    Query query = new SpanOrQuery(new SpanQuery[] { childQuery });
    TopDocs topDocs = searcher.search(query, null, 10, Sort.INDEXORDER);
    assertEquals(2, topDocs.totalHits);
    String snippets[] = highlighter.highlight("body", query, searcher, topDocs);
    assertEquals(2, snippets.length);
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      @Override
      protected Analyzer getIndexAnalyzer(String field) {
        return analyzer;
      }
    };
    SpanQuery childQuery = new SpanMultiTermQueryWrapper<WildcardQuery>(new WildcardQuery(new Term("body", "te*")));
    Query query = new SpanNearQuery(new SpanQuery[] { childQuery }, 0, true);
    TopDocs topDocs = searcher.search(query, null, 10, Sort.INDEXORDER);
    assertEquals(2, topDocs.totalHits);
    String snippets[] = highlighter.highlight("body", query, searcher, topDocs);
    assertEquals(2, snippets.length);
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      @Override
      protected Analyzer getIndexAnalyzer(String field) {
        return analyzer;
      }
    };
    SpanQuery include = new SpanMultiTermQueryWrapper<WildcardQuery>(new WildcardQuery(new Term("body", "te*")));
    SpanQuery exclude = new SpanTermQuery(new Term("body", "bogus"));
    Query query = new SpanNotQuery(include, exclude);
    TopDocs topDocs = searcher.search(query, null, 10, Sort.INDEXORDER);
    assertEquals(2, topDocs.totalHits);
    String snippets[] = highlighter.highlight("body", query, searcher, topDocs);
    assertEquals(2, snippets.length);
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Related Classes of org.apache.lucene.search.spans.SpanQuery

  • com.senseidb.search.query.SpanFirstQueryConstructor
  • com.senseidb.search.query.SpanNotQueryConstructor
  • com.tamingtext.qa.PassageRankingComponent
  • org.apache.lucene.index.memory.MemoryIndexTest
  • org.apache.lucene.queryparser.complexPhrase.ComplexPhraseQueryParser$ComplexPhraseQuery
  • org.apache.lucene.queryParser.complexPhrase.ComplexPhraseQueryParser$ComplexPhraseQuery
  • org.apache.lucene.queryparser.flexible.spans.TestSpanQueryParserSimpleSample
  • org.apache.lucene.queryParser.spans.TestSpanQueryParserSimpleSample
  • org.apache.lucene.queryParser.surround.query.SpanNearClauseFactory
  • org.apache.lucene.queryparser.surround.query.SpanNearClauseFactory
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