Examples of org.apache.lucene.search.WildcardQuery

org.apache.lucene.search.WildcardQuery
Implements the wildcard search query. Supported wildcards are *, which matches any character sequence (including the empty one), and ?, which matches any single character. Note this query can be slow, as it needs to iterate over many terms. In order to prevent extremely slow WildcardQueries, a Wildcard term should not start with one of the wildcards * or ?.
This query uses the {@link MultiTermQuery#CONSTANT_SCORE_AUTO_REWRITE_DEFAULT}rewrite method. @see WildcardTermEnum

    directory.close();
    super.tearDown();
  }
  
  public void testWildcard() throws Exception {
    WildcardQuery wq = new WildcardQuery(new Term("field", "bro?n"));
    SpanQuery swq = new SpanMultiTermQueryWrapper<WildcardQuery>(wq);
    // will only match quick brown fox
    SpanFirstQuery sfq = new SpanFirstQuery(swq, 2);
    assertEquals(1, searcher.search(sfq, 10).totalHits);
  }

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    SpanFirstQuery sfq = new SpanFirstQuery(swq, 2);
    assertEquals(1, searcher.search(sfq, 10).totalHits);
  }
  
  public void testPrefix() throws Exception {
    WildcardQuery wq = new WildcardQuery(new Term("field", "extrem*"));
    SpanQuery swq = new SpanMultiTermQueryWrapper<WildcardQuery>(wq);
    // will only match "jumps over extremely very lazy broxn dog"
    SpanFirstQuery sfq = new SpanFirstQuery(swq, 3);
    assertEquals(1, searcher.search(sfq, 10).totalHits);
  }

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    assertNull( fq.searchPhrase( F, phraseCandidate ) );
  }
  
  public void testHighlightQuery() throws Exception {
    makeIndexStrMV();
    defgMultiTermQueryTest(new WildcardQuery(new Term(F, "d*g")));
  }

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  @Ignore("flexible queryparser shouldn't escape wildcard terms")
  public void testEscapedWildcard() throws Exception {
    StandardQueryParser qp = new StandardQueryParser();
    qp.setAnalyzer(new MockAnalyzer(random(), MockTokenizer.WHITESPACE, false));


    WildcardQuery q = new WildcardQuery(new Term("field", "foo\\?ba?r"));
    assertEquals(q, qp.parse("foo\\?ba?r", "field"));
  }

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  }


  
  public void testWildcard() throws Exception {
    makeIndexLongMV();
    FieldQuery fq = new FieldQuery( new WildcardQuery (new Term(F, "th*e")), reader, true, true );
    FieldTermStack stack = new FieldTermStack( reader, 0, F, fq );
    assertEquals (4, stack.termList.size());
    assertEquals ("the(15,18,2)", stack.pop().toString());
    assertEquals ("these(133,138,20)", stack.pop().toString());
    assertEquals ("the(153,156,23)", stack.pop().toString());

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         final ValueFactoryImpl valueFactory = new ValueFactoryImpl(new LocationFactory(nsReg));
         BooleanQuery.setMaxClauseCount(Integer.MAX_VALUE);
         BooleanQuery query = new BooleanQuery();


         final String prefix = nsReg.getNamespacePrefixByURI(uri);
         query.add(new WildcardQuery(new Term(FieldNames.LABEL, prefix + ":*")), Occur.SHOULD);
         // name of the property
         query.add(new WildcardQuery(new Term(FieldNames.PROPERTIES_SET, prefix + ":*")), Occur.SHOULD);


         result = getNodes(query);


         // value of the property


         try
         {
            final Set<String> props = getFieldNames();


            query = new BooleanQuery();
            for (final String fieldName : props)
            {
               if (!FieldNames.PROPERTIES_SET.equals(fieldName))
               {
                  query.add(new WildcardQuery(new Term(fieldName, "*" + prefix + ":*")), Occur.SHOULD);
               }
            }
         }
         catch (final IndexException e)
         {

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    switch ( termContext.getApproximation() ) {
      case EXACT:
        query = new TermQuery( new Term( fieldName, term ) );
        break;
      case WILDCARD:
        query = new WildcardQuery( new Term( fieldName, term ) );
        break;
      case FUZZY:
        query = new FuzzyQuery(
            new Term( fieldName, term ),
            termContext.getThreshold(),

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    switch ( termContext.getApproximation() ) {
      case EXACT:
        query = new TermQuery( new Term( fieldName, term ) );
        break;
      case WILDCARD:
        query = new WildcardQuery( new Term( fieldName, term ) );
        break;
      case FUZZY:
        query = new FuzzyQuery(
            new Term( fieldName, term ),
            termContext.getThreshold(),

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         final ValueFactoryImpl valueFactory = new ValueFactoryImpl(new LocationFactory(nsReg));
         BooleanQuery.setMaxClauseCount(Integer.MAX_VALUE);
         BooleanQuery query = new BooleanQuery();


         final String prefix = nsReg.getNamespacePrefixByURI(uri);
         query.add(new WildcardQuery(new Term(FieldNames.LABEL, prefix + ":*")), Occur.SHOULD);
         // name of the property
         query.add(new WildcardQuery(new Term(FieldNames.PROPERTIES_SET, prefix + ":*")), Occur.SHOULD);


         result = getNodes(query);


         // value of the property


         try
         {
            final Set<String> props = getFieldNames();


            query = new BooleanQuery();
            for (final String fieldName : props)
            {
               if (!FieldNames.PROPERTIES_SET.equals(fieldName))
               {
                  query.add(new WildcardQuery(new Term(fieldName, "*" + prefix + ":*")), Occur.SHOULD);
               }
            }
         }
         catch (final IndexException e)
         {

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    switch ( termContext.getApproximation() ) {
      case EXACT:
        query = new TermQuery( new Term( fieldName, term ) );
        break;
      case WILDCARD:
        query = new WildcardQuery( new Term( fieldName, term ) );
        break;
      case FUZZY:
        query = new FuzzyQuery(
            new Term( fieldName, term ),
            termContext.getThreshold(),

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