Examples of PhraseQuery

org.apache.lucene.search.PhraseQuery
A Query that matches documents containing a particular sequence of terms. A PhraseQuery is built by QueryParser for input like "new york".
This query may be combined with other terms or queries with a {@link BooleanQuery}.

Examples of org.apache.lucene.search.PhraseQuery

  protected Query pq( float boost, String field, String... texts ){
    return pq( boost, 0, field, texts );
  }
  
  protected Query pq( float boost, int slop, String field, String... texts ){
    PhraseQuery query = new PhraseQuery();
    for( String text : texts ){
      query.add( new Term( field, text ) );
    }
    query.setBoost( boost );
    query.setSlop( slop );
    return query;
  }

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Examples of org.apache.lucene.search.PhraseQuery

    doc.add(new Field("field", tokens));
    w.addDocument(doc);
    w.commit();


    IndexSearcher s = new IndexSearcher(dir);
    PhraseQuery pq = new PhraseQuery();
    pq.add(new Term("field", "a"));
    pq.add(new Term("field", "b"));
    pq.add(new Term("field", "c"));
    ScoreDoc[] hits = s.search(pq, null, 1000).scoreDocs;
    assertEquals(1, hits.length);


    Query q = new SpanTermQuery(new Term("field", "a"));
    hits = s.search(q, null, 1000).scoreDocs;

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Examples of org.apache.lucene.search.PhraseQuery

      this.searcher = newSearcher(reader);
    }
    
    private ScoreDoc[] search() throws IOException {
        // create PhraseQuery "term1 term2" and search
        PhraseQuery pq = new PhraseQuery();
        pq.add(new Term(this.field, this.term1));
        pq.add(new Term(this.field, this.term2));
        return this.searcher.search(pq, null, 1000).scoreDocs;        
    }

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Examples of org.apache.lucene.search.PhraseQuery

  
  public void testCJKPhrase() throws Exception {
    // individual CJK chars as terms
    StandardAnalyzer analyzer = new StandardAnalyzer(TEST_VERSION_CURRENT);
    
    PhraseQuery expected = new PhraseQuery();
    expected.add(new Term("field", "中"));
    expected.add(new Term("field", "国"));
    
    assertEquals(expected, getQuery("\"中国\"", analyzer));
  }

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Examples of org.apache.lucene.search.PhraseQuery

  
  public void testCJKBoostedPhrase() throws Exception {
    // individual CJK chars as terms
    StandardAnalyzer analyzer = new StandardAnalyzer(TEST_VERSION_CURRENT);
    
    PhraseQuery expected = new PhraseQuery();
    expected.setBoost(0.5f);
    expected.add(new Term("field", "中"));
    expected.add(new Term("field", "国"));
    
    assertEquals(expected, getQuery("\"中国\"^0.5", analyzer));
  }

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Examples of org.apache.lucene.search.PhraseQuery

  
  public void testCJKSloppyPhrase() throws Exception {
    // individual CJK chars as terms
    StandardAnalyzer analyzer = new StandardAnalyzer(TEST_VERSION_CURRENT);
    
    PhraseQuery expected = new PhraseQuery();
    expected.setSlop(3);
    expected.add(new Term("field", "中"));
    expected.add(new Term("field", "国"));
    
    assertEquals(expected, getQuery("\"中国\"~3", analyzer));
  }

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Examples of org.apache.lucene.search.PhraseQuery

  
  public void testAutoGeneratePhraseQueriesOn() throws Exception {
    // individual CJK chars as terms
    StandardAnalyzer analyzer = new StandardAnalyzer(TEST_VERSION_CURRENT);
  
    PhraseQuery expected = new PhraseQuery();
    expected.add(new Term("field", "中"));
    expected.add(new Term("field", "国"));
    QueryParser parser = new QueryParser(TEST_VERSION_CURRENT, "field", analyzer);
    parser.setAutoGeneratePhraseQueries(true);
    assertEquals(expected, parser.parse("中国"));
  }

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Examples of org.apache.lucene.search.PhraseQuery

    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "a", new StopAnalyzer(TEST_VERSION_CURRENT, StopFilter.makeStopSet(TEST_VERSION_CURRENT, "the", "in", "are", "this")));
    qp.setEnablePositionIncrements(true);
    String qtxt = "\"the words in poisitions pos02578 are stopped in this phrasequery\"";
    //               0         2                      5           7  8
    int expectedPositions[] = {1,3,4,6,9};
    PhraseQuery pq = (PhraseQuery) qp.parse(qtxt);
    //System.out.println("Query text: "+qtxt);
    //System.out.println("Result: "+pq);
    Term t[] = pq.getTerms();
    int pos[] = pq.getPositions();
    for (int i = 0; i < t.length; i++) {
      //System.out.println(i+". "+t[i]+"  pos: "+pos[i]);
      assertEquals("term "+i+" = "+t[i]+" has wrong term-position!",expectedPositions[i],pos[i]);
    }
  }

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Examples of org.apache.lucene.search.PhraseQuery

    TestHighlightRunner helper = new TestHighlightRunner() {


      public void run() throws Exception {
        numHighlights = 0;
        TermRangeFilter rf = new TermRangeFilter("contents", "john", "john", true, true);
        PhraseQuery pq = new PhraseQuery();
        pq.add(new Term("contents", "john"));
        pq.add(new Term("contents", "kennedy"));
        FilteredQuery fq = new FilteredQuery(pq, rf);


        doSearching(fq);
        doStandardHighlights(analyzer, hits, query, HighlighterTest.this);
        // Currently highlights "John" and "Kennedy" separately

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Examples of org.apache.lucene.search.PhraseQuery

          }
          return mpq;
        }
      }
      else {
        PhraseQuery pq = newPhraseQuery();
        pq.setSlop(phraseSlop);
        int position = -1;




        for (int i = 0; i < numTokens; i++) {
          String term = null;
          int positionIncrement = 1;


          try {
            boolean hasNext = buffer.incrementToken();
            assert hasNext == true;
            term = termAtt.term();
            if (posIncrAtt != null) {
              positionIncrement = posIncrAtt.getPositionIncrement();
            }
          } catch (IOException e) {
            // safe to ignore, because we know the number of tokens
          }


          if (enablePositionIncrements) {
            position += positionIncrement;
            pq.add(new Term(field, term),position);
          } else {
            pq.add(new Term(field, term));
          }
        }
        return pq;
      }
    }

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