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}.

          query.add( value.toArray( new Term[value.size()] ), entry.getKey() );
        }
        perFieldQuery = query;
      }
      else {
        PhraseQuery query = new PhraseQuery();
        query.setSlop(  phraseContext.getSlop() );
        for ( Map.Entry<Integer,List<Term>> entry : termsPerPosition.entrySet() ) {
          final List<Term> value = entry.getValue();
          query.add( value.get(0), entry.getKey() );
        }
        perFieldQuery = query;
      }
    }
    return fieldContext.getFieldCustomizer().setWrappedQuery( perFieldQuery ).createQuery();

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    final IndexReader r = w.getReader();
    w.close();


    final IndexSearcher s = newSearcher(r);
    PhraseQuery pq = new PhraseQuery();
    pq.add(new Term("content", "silly"));
    pq.add(new Term("content", "content"));
    assertEquals(0, s.search(pq, 1).totalHits);


    pq = new PhraseQuery();
    pq.add(new Term("content", "good"));
    pq.add(new Term("content", "content"));
    assertEquals(numDocs1+numDocs2, s.search(pq, 1).totalHits);
    r.close();
    dir.close();
  }

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    final IndexReader r = w.getReader();
    w.close();


    final IndexSearcher s = newSearcher(r);
    PhraseQuery pq = new PhraseQuery();
    pq.add(new Term("content", "silly"));
    pq.add(new Term("content", "content"));
    assertEquals(numDocs2, s.search(pq, 1).totalHits);


    pq = new PhraseQuery();
    pq.add(new Term("content", "good"));
    pq.add(new Term("content", "content"));
    assertEquals(numDocs1+numDocs3+numDocs4, s.search(pq, 1).totalHits);
    r.close();
    dir.close();
  }

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      doc.add(newStringField("id", "" + (i % 10), Field.Store.NO));
      doc.add(newTextField("content", "bbb " + i, Field.Store.NO));
      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.forceMerge(1);
    writer.commit();

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    }
    
    writer.addIndexes(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.forceMerge(1);
    writer.commit();

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      doc.add(newTextField("content", "bbb " + i, Field.Store.NO));
      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(aux);


    writer.forceMerge(1);

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      assertEquals(1, bestFragments.length);
      assertEquals("first browser war it lost virtually all of its share to <b>Internet</b> <b>Explorer</b> Netscape was discontinued and support for all Netscape browsers", bestFragments[0]);
    }
    
    {
      PhraseQuery query = new PhraseQuery();
      query.add(new Term(field, "internet"));
      query.add(new Term(field, "explorer"));
      FieldQuery fieldQuery = highlighter.getFieldQuery(query, reader);
      String[] bestFragments = highlighter.getBestFragments(fieldQuery, reader,
          docId, field, 128, 1);
      // highlighted results are centered
      assertEquals(1, bestFragments.length);

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      assertEquals(1, bestFragments.length);
      assertEquals("<b>foo</b> is <b>highlighed</b> and", bestFragments[0]);
    }
    {
      BooleanQuery query = new BooleanQuery();
      PhraseQuery pq = new PhraseQuery();
      pq.add(new Term(field, "test"));
      pq.add(new Term(field, "foo"));
      pq.add(new Term(field, "highlighed"));
      pq.setSlop(5);
      query.add(new TermQuery(new Term(field, "foo")), Occur.MUST);
      query.add(pq, Occur.MUST);
      query.add(new TermQuery(new Term(field, "highlighed")), Occur.MUST);
      FieldQuery fieldQuery = highlighter.getFieldQuery(query, reader);
      String[] bestFragments = highlighter.getBestFragments(fieldQuery, reader,
          docId, field, 18, 1);
      // highlighted results are centered
      assertEquals(0, bestFragments.length);
      bestFragments = highlighter.getBestFragments(fieldQuery, reader,
          docId, field, 30, 1);
      // highlighted results are centered
      assertEquals(1, bestFragments.length);
      assertEquals("a <b>test</b> where <b>foo</b> is <b>highlighed</b> and", bestFragments[0]);
      
    }
    {
      PhraseQuery query = new PhraseQuery();
      query.add(new Term(field, "test"));
      query.add(new Term(field, "foo"));
      query.add(new Term(field, "highlighed"));
      query.setSlop(3);
      FieldQuery fieldQuery = highlighter.getFieldQuery(query, reader);
      String[] bestFragments = highlighter.getBestFragments(fieldQuery, reader,
          docId, field, 18, 1);
      // highlighted results are centered
      assertEquals(0, bestFragments.length);
      bestFragments = highlighter.getBestFragments(fieldQuery, reader,
          docId, field, 30, 1);
      // highlighted results are centered
      assertEquals(1, bestFragments.length);
      assertEquals("a <b>test</b> where <b>foo</b> is <b>highlighed</b> and", bestFragments[0]);
      
    }
    {
      PhraseQuery query = new PhraseQuery();
      query.add(new Term(field, "test"));
      query.add(new Term(field, "foo"));
      query.add(new Term(field, "highlighted"));
      query.setSlop(30);
      FieldQuery fieldQuery = highlighter.getFieldQuery(query, reader);
      String[] bestFragments = highlighter.getBestFragments(fieldQuery, reader,
          docId, field, 18, 1);
      assertEquals(0, bestFragments.length);
    }
    {
      BooleanQuery query = new BooleanQuery();
      PhraseQuery pq = new PhraseQuery();
      pq.add(new Term(field, "test"));
      pq.add(new Term(field, "foo"));
      pq.add(new Term(field, "highlighed"));
      pq.setSlop(5);
      BooleanQuery inner = new BooleanQuery();
      inner.add(pq, Occur.MUST);
      inner.add(new TermQuery(new Term(field, "foo")), Occur.MUST);
      query.add(inner, Occur.MUST);
      query.add(pq, Occur.MUST);

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    doc.add(new TextField("body", "test of gaps", Field.Store.NO));
    iw.addDocument(doc);
    IndexReader ir = iw.getReader();
    iw.close();
    IndexSearcher is = newSearcher(ir);
    PhraseQuery pq = new PhraseQuery();
    pq.add(new Term("body", "just"), 0);
    pq.add(new Term("body", "test"), 2);
    // body:"just ? test"
    assertEquals(1, is.search(pq, 5).totalHits);
    ir.close();
    dir.close();
  }

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    doc.add(new TextField("body", "test of gaps", Field.Store.NO));
    iw.addDocument(doc);
    IndexReader ir = iw.getReader();
    iw.close();
    IndexSearcher is = newSearcher(ir);
    PhraseQuery pq = new PhraseQuery();
    pq.add(new Term("body", "just"), 0);
    pq.add(new Term("body", "test"), 3);
    // body:"just ? ? test"
    assertEquals(1, is.search(pq, 5).totalHits);
    ir.close();
    dir.close();
  }

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