Examples of org.apache.lucene.search.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}.

  
  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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  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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    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, "a");
    // 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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  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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    checkHits(query, new int[] {});
  }


  @Test
  public void testPhrase() throws Exception {
    PhraseQuery query = new PhraseQuery();
    query.add(new Term("field", "seventy"));
    query.add(new Term("field", "seven"));
    checkHits(query, new int[]
      {77, 177, 277, 377, 477, 577, 677, 777, 877,
              977, 1077, 1177, 1277, 1377, 1477, 1577, 1677, 1777, 1877, 1977});
  }

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              977, 1077, 1177, 1277, 1377, 1477, 1577, 1677, 1777, 1877, 1977});
  }


  @Test
  public void testPhrase2() throws Exception {
    PhraseQuery query = new PhraseQuery();
    query.add(new Term("field", "seventish"));
    query.add(new Term("field", "sevenon"));
    checkHits(query, new int[] {});
  }

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  }


  private void smokeTestSearcher(IndexSearcher s) throws Exception {
    runQuery(s, new TermQuery(new Term("body", "united")));
    runQuery(s, new TermQuery(new Term("titleTokenized", "states")));
    PhraseQuery pq = new PhraseQuery();
    pq.add(new Term("body", "united"));
    pq.add(new Term("body", "states"));
    runQuery(s, pq);
  }

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      doc.add(newField("content", "bbb " + i, Field.Store.NO,
                        Field.Index.ANALYZED));
      writer.updateDocument(new Term("id", "" + (i%10)), doc);
    }
    // Deletes one of the 10 added docs, leaving 9:
    PhraseQuery q = new PhraseQuery();
    q.add(new Term("content", "bbb"));
    q.add(new Term("content", "14"));
    writer.deleteDocuments(q);


    writer.optimize();
    writer.commit();

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    }
    
    writer.addIndexes(new Directory[] {aux});
    
    // Deletes one of the 10 added docs, leaving 9:
    PhraseQuery q = new PhraseQuery();
    q.add(new Term("content", "bbb"));
    q.add(new Term("content", "14"));
    writer.deleteDocuments(q);


    writer.optimize();
    writer.commit();

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                        Field.Index.ANALYZED));
      writer.updateDocument(new Term("id", "" + (i%10)), doc);
    }


    // Deletes one of the 10 added docs, leaving 9:
    PhraseQuery q = new PhraseQuery();
    q.add(new Term("content", "bbb"));
    q.add(new Term("content", "14"));
    writer.deleteDocuments(q);


    writer.addIndexes(new Directory[] {aux});


    writer.optimize();

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