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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.index.query;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.BoostQuery;
import org.apache.lucene.search.FuzzyQuery;
import org.apache.lucene.search.NumericRangeQuery;
import org.apache.lucene.search.Query;
import org.elasticsearch.common.collect.Tuple;
import org.elasticsearch.common.unit.Fuzziness;
import org.hamcrest.Matchers;
import java.io.IOException;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.instanceOf;
public class FuzzyQueryBuilderTests extends AbstractQueryTestCase<FuzzyQueryBuilder> {
@Override
protected FuzzyQueryBuilder doCreateTestQueryBuilder() {
Tuple<String, Object> fieldAndValue = getRandomFieldNameAndValue();
FuzzyQueryBuilder query = new FuzzyQueryBuilder(fieldAndValue.v1(), fieldAndValue.v2());
if (randomBoolean()) {
query.fuzziness(randomFuzziness(query.fieldName()));
}
if (randomBoolean()) {
query.prefixLength(randomIntBetween(0, 10));
}
if (randomBoolean()) {
query.maxExpansions(randomIntBetween(1, 10));
}
if (randomBoolean()) {
query.transpositions(randomBoolean());
}
if (randomBoolean()) {
query.rewrite(getRandomRewriteMethod());
}
return query;
}
@Override
protected void doAssertLuceneQuery(FuzzyQueryBuilder queryBuilder, Query query, QueryShardContext context) throws IOException {
if (isNumericFieldName(queryBuilder.fieldName()) || queryBuilder.fieldName().equals(DATE_FIELD_NAME)) {
assertThat(query, instanceOf(NumericRangeQuery.class));
} else {
assertThat(query, instanceOf(FuzzyQuery.class));
}
}
public void testIllegalArguments() {
try {
new FuzzyQueryBuilder(null, "text");
fail("must not be null");
} catch (IllegalArgumentException e) {
// expected
}
try {
new FuzzyQueryBuilder("", "text");
fail("must not be empty");
} catch (IllegalArgumentException e) {
// expected
}
try {
new FuzzyQueryBuilder("field", null);
fail("must not be null");
} catch (IllegalArgumentException e) {
// expected
}
}
public void testUnsupportedFuzzinessForStringType() throws IOException {
QueryShardContext context = createShardContext();
context.setAllowUnmappedFields(true);
FuzzyQueryBuilder fuzzyQueryBuilder = new FuzzyQueryBuilder(STRING_FIELD_NAME, "text");
fuzzyQueryBuilder.fuzziness(Fuzziness.build(randomFrom("a string which is not auto", "3h", "200s")));
try {
fuzzyQueryBuilder.toQuery(context);
fail("should have failed with NumberFormatException");
} catch (NumberFormatException e) {
assertThat(e.getMessage(), Matchers.containsString("For input string"));
}
}
public void testToQueryWithStringField() throws IOException {
assumeTrue("test runs only when at least a type is registered", getCurrentTypes().length > 0);
String query = "{\n" +
" \"fuzzy\":{\n" +
" \"" + STRING_FIELD_NAME + "\":{\n" +
" \"value\":\"sh\",\n" +
" \"fuzziness\": \"AUTO\",\n" +
" \"prefix_length\":1,\n" +
" \"boost\":2.0\n" +
" }\n" +
" }\n" +
"}";
Query parsedQuery = parseQuery(query).toQuery(createShardContext());
assertThat(parsedQuery, instanceOf(BoostQuery.class));
BoostQuery boostQuery = (BoostQuery) parsedQuery;
assertThat(boostQuery.getBoost(), equalTo(2.0f));
assertThat(boostQuery.getQuery(), instanceOf(FuzzyQuery.class));
FuzzyQuery fuzzyQuery = (FuzzyQuery) boostQuery.getQuery();
assertThat(fuzzyQuery.getTerm(), equalTo(new Term(STRING_FIELD_NAME, "sh")));
assertThat(fuzzyQuery.getMaxEdits(), equalTo(Fuzziness.AUTO.asDistance("sh")));
assertThat(fuzzyQuery.getPrefixLength(), equalTo(1));
}
public void testToQueryWithNumericField() throws IOException {
assumeTrue("test runs only when at least a type is registered", getCurrentTypes().length > 0);
String query = "{\n" +
" \"fuzzy\":{\n" +
" \"" + INT_FIELD_NAME + "\":{\n" +
" \"value\":12,\n" +
" \"fuzziness\":5\n" +
" }\n" +
" }\n" +
"}\n";
Query parsedQuery = parseQuery(query).toQuery(createShardContext());
assertThat(parsedQuery, instanceOf(NumericRangeQuery.class));
NumericRangeQuery fuzzyQuery = (NumericRangeQuery) parsedQuery;
assertThat(fuzzyQuery.getMin().longValue(), equalTo(7l));
assertThat(fuzzyQuery.getMax().longValue(), equalTo(17l));
}
public void testFromJson() throws IOException {
String json =
"{\n" +
" \"fuzzy\" : {\n" +
" \"user\" : {\n" +
" \"value\" : \"ki\",\n" +
" \"fuzziness\" : \"2\",\n" +
" \"prefix_length\" : 0,\n" +
" \"max_expansions\" : 100,\n" +
" \"transpositions\" : false,\n" +
" \"boost\" : 42.0\n" +
" }\n" +
" }\n" +
"}";
FuzzyQueryBuilder parsed = (FuzzyQueryBuilder) parseQuery(json);
checkGeneratedJson(json, parsed);
assertEquals(json, 42.0, parsed.boost(), 0.00001);
assertEquals(json, 2, parsed.fuzziness().asInt());
}
}
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