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* 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.search.Query;
import org.apache.lucene.search.RegexpQuery;
import org.elasticsearch.common.ParsingException;
import org.elasticsearch.search.internal.SearchContext;
import org.elasticsearch.test.AbstractQueryTestCase;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.instanceOf;
public class RegexpQueryBuilderTests extends AbstractQueryTestCase<RegexpQueryBuilder> {
@Override
protected RegexpQueryBuilder doCreateTestQueryBuilder() {
RegexpQueryBuilder query = randomRegexpQuery();
if (randomBoolean()) {
List<RegexpFlag> flags = new ArrayList<>();
int iter = randomInt(5);
for (int i = 0; i < iter; i++) {
flags.add(randomFrom(RegexpFlag.values()));
}
query.flags(flags.toArray(new RegexpFlag[flags.size()]));
}
if (randomBoolean()) {
query.maxDeterminizedStates(randomInt(50000));
}
if (randomBoolean()) {
query.rewrite(randomFrom(getRandomRewriteMethod()));
}
return query;
}
@Override
protected Map<String, RegexpQueryBuilder> getAlternateVersions() {
Map<String, RegexpQueryBuilder> alternateVersions = new HashMap<>();
RegexpQueryBuilder regexpQuery = randomRegexpQuery();
String contentString = "{\n" +
" \"regexp\" : {\n" +
" \"" + regexpQuery.fieldName() + "\" : \"" + regexpQuery.value() + "\"\n" +
" }\n" +
"}";
alternateVersions.put(contentString, regexpQuery);
return alternateVersions;
}
private static RegexpQueryBuilder randomRegexpQuery() {
// mapped or unmapped fields
String fieldName = randomBoolean() ? STRING_FIELD_NAME : randomAlphaOfLengthBetween(1, 10);
String value = randomAlphaOfLengthBetween(1, 10);
return new RegexpQueryBuilder(fieldName, value);
}
@Override
protected void doAssertLuceneQuery(RegexpQueryBuilder queryBuilder, Query query, SearchContext context) throws IOException {
assertThat(query, instanceOf(RegexpQuery.class));
RegexpQuery regexpQuery = (RegexpQuery) query;
assertThat(regexpQuery.getField(), equalTo(queryBuilder.fieldName()));
}
public void testIllegalArguments() {
IllegalArgumentException e = expectThrows(IllegalArgumentException.class, () -> new RegexpQueryBuilder(null, "text"));
assertEquals("field name is null or empty", e.getMessage());
e = expectThrows(IllegalArgumentException.class, () -> new RegexpQueryBuilder("", "text"));
assertEquals("field name is null or empty", e.getMessage());
e = expectThrows(IllegalArgumentException.class, () -> new RegexpQueryBuilder("field", null));
assertEquals("value cannot be null", e.getMessage());
}
public void testFromJson() throws IOException {
String json =
"{\n" +
" \"regexp\" : {\n" +
" \"name.first\" : {\n" +
" \"value\" : \"s.*y\",\n" +
" \"flags_value\" : 7,\n" +
" \"max_determinized_states\" : 20000,\n" +
" \"boost\" : 1.0\n" +
" }\n" +
" }\n" +
"}";
RegexpQueryBuilder parsed = (RegexpQueryBuilder) parseQuery(json);
checkGeneratedJson(json, parsed);
assertEquals(json, "s.*y", parsed.value());
assertEquals(json, 20000, parsed.maxDeterminizedStates());
}
public void testNumeric() throws Exception {
assumeTrue("test runs only when at least a type is registered", getCurrentTypes().length > 0);
RegexpQueryBuilder query = new RegexpQueryBuilder(INT_FIELD_NAME, "12");
QueryShardContext context = createShardContext();
QueryShardException e = expectThrows(QueryShardException.class, () -> query.toQuery(context));
assertEquals("Can only use regexp queries on keyword and text fields - not on [mapped_int] which is of type [integer]",
e.getMessage());
}
public void testParseFailsWithMultipleFields() throws IOException {
String json =
"{\n" +
" \"regexp\": {\n" +
" \"user1\": {\n" +
" \"value\": \"k.*y\"\n" +
" },\n" +
" \"user2\": {\n" +
" \"value\": \"k.*y\"\n" +
" }\n" +
" }\n" +
"}";
ParsingException e = expectThrows(ParsingException.class, () -> parseQuery(json));
assertEquals("[regexp] query doesn't support multiple fields, found [user1] and [user2]", e.getMessage());
String shortJson =
"{\n" +
" \"regexp\": {\n" +
" \"user1\": \"k.*y\",\n" +
" \"user2\": \"k.*y\"\n" +
" }\n" +
"}";
e = expectThrows(ParsingException.class, () -> parseQuery(shortJson));
assertEquals("[regexp] query doesn't support multiple fields, found [user1] and [user2]", e.getMessage());
}
}