Package org.apache.lucene.search

Examples of org.apache.lucene.search.FuzzyQuery

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  }
 
  public void testNoSuchMultiTermsInNotNear() throws Exception {
    //test to make sure non existent multiterms aren't throwing non-matching field exceptions 
    FuzzyQuery fuzzyNoSuch = new FuzzyQuery(new Term("field", "noSuch"), 1, 0, 1, false);
    SpanQuery spanNoSuch = new SpanMultiTermQueryWrapper<FuzzyQuery>(fuzzyNoSuch);
    SpanQuery term = new SpanTermQuery(new Term("field", "brown"));
    SpanNotQuery notNear = new SpanNotQuery(term, spanNoSuch, 0,0);
    assertEquals(1, searcher.search(notNear, 10).totalHits);
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  }
 
  public void testNoSuchMultiTermsInOr() throws Exception {
    //test to make sure non existent multiterms aren't throwing null pointer exceptions 
    FuzzyQuery fuzzyNoSuch = new FuzzyQuery(new Term("field", "noSuch"), 1, 0, 1, false);
    SpanQuery spanNoSuch = new SpanMultiTermQueryWrapper<FuzzyQuery>(fuzzyNoSuch);
    SpanQuery term = new SpanTermQuery(new Term("field", "brown"));
    SpanOrQuery near = new SpanOrQuery(new SpanQuery[]{term, spanNoSuch});
    assertEquals(1, searcher.search(near, 10).totalHits);
   
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  }
 
 
  public void testNoSuchMultiTermsInSpanFirst() throws Exception {
    //this hasn't been a problem 
    FuzzyQuery fuzzyNoSuch = new FuzzyQuery(new Term("field", "noSuch"), 1, 0, 1, false);
    SpanQuery spanNoSuch = new SpanMultiTermQueryWrapper<FuzzyQuery>(fuzzyNoSuch);
    SpanQuery spanFirst = new SpanFirstQuery(spanNoSuch, 10);
    assertEquals(0, searcher.search(spanFirst, 10).totalHits);
   
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    assertTrue(getQuery("term*", null) instanceof PrefixQuery);
    assertTrue(getQuery("term*^2", null) instanceof PrefixQuery);
    assertTrue(getQuery("term~", null) instanceof FuzzyQuery);
    assertTrue(getQuery("term~0.7", null) instanceof FuzzyQuery);
    FuzzyQuery fq = (FuzzyQuery) getQuery("term~0.7", null);
    assertEquals(0.7f, fq.getMinSimilarity(), 0.1f);
    assertEquals(FuzzyQuery.defaultPrefixLength, fq.getPrefixLength());
    fq = (FuzzyQuery) getQuery("term~", null);
    assertEquals(0.5f, fq.getMinSimilarity(), 0.1f);
    assertEquals(FuzzyQuery.defaultPrefixLength, fq.getPrefixLength());

    assertParseException("term~1.1"); // value > 1, throws exception

    assertTrue(getQuery("term*germ", null) instanceof WildcardQuery);

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    assertTrue(getQuery("term*", null) instanceof PrefixQuery);
    assertTrue(getQuery("term*^2", null) instanceof PrefixQuery);
    assertTrue(getQuery("term~", null) instanceof FuzzyQuery);
    assertTrue(getQuery("term~0.7", null) instanceof FuzzyQuery);
    FuzzyQuery fq = (FuzzyQuery)getQuery("term~0.7", null);
    assertEquals(0.7f, fq.getMinSimilarity(), 0.1f);
    assertEquals(FuzzyQuery.defaultPrefixLength, fq.getPrefixLength());
    fq = (FuzzyQuery)getQuery("term~", null);
    assertEquals(0.5f, fq.getMinSimilarity(), 0.1f);
    assertEquals(FuzzyQuery.defaultPrefixLength, fq.getPrefixLength());
    try {
      getQuery("term~1.1", null);   // value > 1, throws exception
      fail();
    } catch(ParseException pe) {
      // expected exception
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    assertTrue(getQuery("term*", null) instanceof PrefixQuery);
    assertTrue(getQuery("term*^2", null) instanceof PrefixQuery);
    assertTrue(getQuery("term~", null) instanceof FuzzyQuery);
    assertTrue(getQuery("term~0.7", null) instanceof FuzzyQuery);
    FuzzyQuery fq = (FuzzyQuery) getQuery("term~0.7", null);
    assertEquals(0.7f, fq.getMinSimilarity(), 0.1f);
    assertEquals(FuzzyQuery.defaultPrefixLength, fq.getPrefixLength());
    fq = (FuzzyQuery) getQuery("term~", null);
    assertEquals(0.5f, fq.getMinSimilarity(), 0.1f);
    assertEquals(FuzzyQuery.defaultPrefixLength, fq.getPrefixLength());

    assertQueryNodeException("term~1.1"); // value > 1, throws exception

    assertTrue(getQuery("term*germ", null) instanceof WildcardQuery);

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  {
    if (lowercaseExpandedTerms) {
      termStr = termStr.toLowerCase();
    }
    Term t = new Term(field, termStr);
    return new FuzzyQuery(t, minSimilarity, fuzzyPrefixLength);
  }
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                iValue + iSim,
                true, true);
    }

    @Override public Query fuzzyQuery(String value, double minSim, int prefixLength, int maxExpansions) {
        return new FuzzyQuery(termFactory.createTerm(value), (float) minSim, prefixLength, maxExpansions);
    }
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            if (smartNameFieldMappers.hasMapper()) {
                query = smartNameFieldMappers.mapper().fuzzyQuery(value, minSimilarity, prefixLength, maxExpansions);
            }
        }
        if (query == null) {
            query = new FuzzyQuery(new Term(fieldName, value), Float.parseFloat(minSimilarity), prefixLength, maxExpansions);
        }
        query.setBoost(boost);

        return wrapSmartNameQuery(query, smartNameFieldMappers, parseContext);
    }
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    private Query newTermQuery(@Nullable FieldMapper mapper, Term term) {
        if (fuzziness != null) {
            if (mapper != null) {
                return mapper.fuzzyQuery(term.text(), fuzziness, fuzzyPrefixLength, maxExpansions);
            }
            return new FuzzyQuery(term, Float.parseFloat(fuzziness), fuzzyPrefixLength, maxExpansions);
        }
        if (mapper != null) {
            Query termQuery = mapper.queryStringTermQuery(term);
            if (termQuery != null) {
                return termQuery;
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