Examples with FuzzyQuery org.apache.lucene.search.FuzzyQuery used on opensource projects

Example 16 with FuzzyQuery

use of org.apache.lucene.search.FuzzyQuery in project lucene-solr by apache.

the class TestSimpleQueryParser method testFuzzy.

/** test a fuzzy query */
public void testFuzzy() throws Exception {
    Query regular = new TermQuery(new Term("field", "foobar"));
    Query expected = new FuzzyQuery(new Term("field", "foobar"), 2);
    assertEquals(expected, parse("foobar~2"));
    assertEquals(expected, parse("foobar~"));
    assertEquals(regular, parse("foobar~a"));
    assertEquals(regular, parse("foobar~1a"));
    BooleanQuery.Builder bool = new BooleanQuery.Builder();
    FuzzyQuery fuzzy = new FuzzyQuery(new Term("field", "foo"), LevenshteinAutomata.MAXIMUM_SUPPORTED_DISTANCE);
    bool.add(fuzzy, Occur.MUST);
    bool.add(new TermQuery(new Term("field", "bar")), Occur.MUST);
    assertEquals(bool.build(), parse("foo~" + LevenshteinAutomata.MAXIMUM_SUPPORTED_DISTANCE + 1 + " bar"));
}

Example 17 with FuzzyQuery

use of org.apache.lucene.search.FuzzyQuery in project lucene-solr by apache.

the class TestSpans method testSpanNotWithMultiterm.

public void testSpanNotWithMultiterm() throws Exception {
    SpanQuery q = spanNotQuery(spanTermQuery(field, "r1"), new SpanMultiTermQueryWrapper<>(new PrefixQuery(new Term(field, "s1"))), 3, 3);
    checkHits(q, new int[] { 14 });
    q = spanNotQuery(spanTermQuery(field, "r1"), new SpanMultiTermQueryWrapper<>(new FuzzyQuery(new Term(field, "s12"), 1, 2)), 3, 3);
    checkHits(q, new int[] { 14 });
    q = spanNotQuery(new SpanMultiTermQueryWrapper<>(new PrefixQuery(new Term(field, "r"))), spanTermQuery(field, "s21"), 3, 3);
    checkHits(q, new int[] { 13 });
}

Example 18 with FuzzyQuery

use of org.apache.lucene.search.FuzzyQuery in project elasticsearch by elastic.

the class QueryStringQueryBuilderTests method testToQueryFuzzyQueryAutoFuziness.

public void testToQueryFuzzyQueryAutoFuziness() throws Exception {
    assumeTrue("test runs only when at least a type is registered", getCurrentTypes().length > 0);
    int length = randomIntBetween(1, 10);
    StringBuilder queryString = new StringBuilder();
    for (int i = 0; i < length; i++) {
        queryString.append("a");
    }
    queryString.append("~");
    int expectedEdits;
    if (length <= 2) {
        expectedEdits = 0;
    } else if (3 <= length && length <= 5) {
        expectedEdits = 1;
    } else {
        expectedEdits = 2;
    }
    Query query = queryStringQuery(queryString.toString()).defaultField(STRING_FIELD_NAME).fuzziness(Fuzziness.AUTO).toQuery(createShardContext());
    assertThat(query, instanceOf(FuzzyQuery.class));
    FuzzyQuery fuzzyQuery = (FuzzyQuery) query;
    assertEquals(expectedEdits, fuzzyQuery.getMaxEdits());
}

Example 19 with FuzzyQuery

use of org.apache.lucene.search.FuzzyQuery in project elasticsearch by elastic.

the class QueryStringQueryBuilderTests method testExpandedTerms.

public void testExpandedTerms() throws Exception {
    // Prefix
    Query query = new QueryStringQueryBuilder("aBc*").field(STRING_FIELD_NAME).analyzer("whitespace").toQuery(createShardContext());
    assertEquals(new PrefixQuery(new Term(STRING_FIELD_NAME, "aBc")), query);
    query = new QueryStringQueryBuilder("aBc*").field(STRING_FIELD_NAME).analyzer("standard").toQuery(createShardContext());
    assertEquals(new PrefixQuery(new Term(STRING_FIELD_NAME, "abc")), query);
    // Wildcard
    query = new QueryStringQueryBuilder("aBc*D").field(STRING_FIELD_NAME).analyzer("whitespace").toQuery(createShardContext());
    assertEquals(new WildcardQuery(new Term(STRING_FIELD_NAME, "aBc*D")), query);
    query = new QueryStringQueryBuilder("aBc*D").field(STRING_FIELD_NAME).analyzer("standard").toQuery(createShardContext());
    assertEquals(new WildcardQuery(new Term(STRING_FIELD_NAME, "abc*d")), query);
    // Fuzzy
    query = new QueryStringQueryBuilder("aBc~1").field(STRING_FIELD_NAME).analyzer("whitespace").toQuery(createShardContext());
    FuzzyQuery fuzzyQuery = (FuzzyQuery) query;
    assertEquals(new Term(STRING_FIELD_NAME, "aBc"), fuzzyQuery.getTerm());
    query = new QueryStringQueryBuilder("aBc~1").field(STRING_FIELD_NAME).analyzer("standard").toQuery(createShardContext());
    fuzzyQuery = (FuzzyQuery) query;
    assertEquals(new Term(STRING_FIELD_NAME, "abc"), fuzzyQuery.getTerm());
    // Range
    query = new QueryStringQueryBuilder("[aBc TO BcD]").field(STRING_FIELD_NAME).analyzer("whitespace").toQuery(createShardContext());
    assertEquals(new TermRangeQuery(STRING_FIELD_NAME, new BytesRef("aBc"), new BytesRef("BcD"), true, true), query);
    query = new QueryStringQueryBuilder("[aBc TO BcD]").field(STRING_FIELD_NAME).analyzer("standard").toQuery(createShardContext());
    assertEquals(new TermRangeQuery(STRING_FIELD_NAME, new BytesRef("abc"), new BytesRef("bcd"), true, true), query);
}

Example 20 with FuzzyQuery

use of org.apache.lucene.search.FuzzyQuery in project elasticsearch by elastic.

the class SimpleQueryStringBuilderTests method testExpandedTerms.

public void testExpandedTerms() throws Exception {
    // Prefix
    Query query = new SimpleQueryStringBuilder("aBc*").field(STRING_FIELD_NAME).analyzer("whitespace").toQuery(createShardContext());
    assertEquals(new PrefixQuery(new Term(STRING_FIELD_NAME, "aBc")), query);
    query = new SimpleQueryStringBuilder("aBc*").field(STRING_FIELD_NAME).analyzer("standard").toQuery(createShardContext());
    assertEquals(new PrefixQuery(new Term(STRING_FIELD_NAME, "abc")), query);
    // Fuzzy
    query = new SimpleQueryStringBuilder("aBc~1").field(STRING_FIELD_NAME).analyzer("whitespace").toQuery(createShardContext());
    FuzzyQuery expected = new FuzzyQuery(new Term(STRING_FIELD_NAME, "aBc"), 1);
    assertEquals(expected, query);
    query = new SimpleQueryStringBuilder("aBc~1").field(STRING_FIELD_NAME).analyzer("standard").toQuery(createShardContext());
    expected = new FuzzyQuery(new Term(STRING_FIELD_NAME, "abc"), 1);
    assertEquals(expected, query);
}