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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.queries.ExtendedCommonTermsQuery;
import org.apache.lucene.search.Query;
import org.elasticsearch.common.ParsingException;
import org.elasticsearch.search.internal.SearchContext;
import org.elasticsearch.test.AbstractQueryTestCase;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import static org.elasticsearch.index.query.QueryBuilders.commonTermsQuery;
import static org.elasticsearch.test.StreamsUtils.copyToStringFromClasspath;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.instanceOf;
import static org.hamcrest.Matchers.nullValue;
public class CommonTermsQueryBuilderTests extends AbstractQueryTestCase<CommonTermsQueryBuilder> {
@Override
protected CommonTermsQueryBuilder doCreateTestQueryBuilder() {
CommonTermsQueryBuilder query;
int numberOfTerms = randomIntBetween(0, 10);
StringBuilder text = new StringBuilder("");
for (int i = 0; i < numberOfTerms; i++) {
text.append(randomAlphaOfLengthBetween(1, 10)).append(" ");
}
// mapped or unmapped field
if (randomBoolean()) {
query = new CommonTermsQueryBuilder(STRING_FIELD_NAME, text.toString());
} else {
query = new CommonTermsQueryBuilder(randomAlphaOfLengthBetween(1, 10), text.toString());
}
if (randomBoolean()) {
query.cutoffFrequency(randomIntBetween(1, 10));
}
if (randomBoolean()) {
query.lowFreqOperator(randomFrom(Operator.values()));
}
// number of low frequency terms that must match
if (randomBoolean()) {
query.lowFreqMinimumShouldMatch("" + randomIntBetween(1, 5));
}
if (randomBoolean()) {
query.highFreqOperator(randomFrom(Operator.values()));
}
// number of high frequency terms that must match
if (randomBoolean()) {
query.highFreqMinimumShouldMatch("" + randomIntBetween(1, 5));
}
if (randomBoolean()) {
query.analyzer(randomAnalyzer());
}
return query;
}
@Override
protected Map<String, CommonTermsQueryBuilder> getAlternateVersions() {
Map<String, CommonTermsQueryBuilder> alternateVersions = new HashMap<>();
CommonTermsQueryBuilder commonTermsQuery = new CommonTermsQueryBuilder(randomAlphaOfLengthBetween(1, 10),
randomAlphaOfLengthBetween(1, 10));
String contentString = "{\n" +
" \"common\" : {\n" +
" \"" + commonTermsQuery.fieldName() + "\" : \"" + commonTermsQuery.value() + "\"\n" +
" }\n" +
"}";
alternateVersions.put(contentString, commonTermsQuery);
return alternateVersions;
}
@Override
protected void doAssertLuceneQuery(CommonTermsQueryBuilder queryBuilder, Query query, SearchContext context) throws IOException {
assertThat(query, instanceOf(ExtendedCommonTermsQuery.class));
ExtendedCommonTermsQuery extendedCommonTermsQuery = (ExtendedCommonTermsQuery) query;
assertThat(extendedCommonTermsQuery.getHighFreqMinimumNumberShouldMatchSpec(), equalTo(queryBuilder.highFreqMinimumShouldMatch()));
assertThat(extendedCommonTermsQuery.getLowFreqMinimumNumberShouldMatchSpec(), equalTo(queryBuilder.lowFreqMinimumShouldMatch()));
}
public void testIllegalArguments() {
IllegalArgumentException e = expectThrows(IllegalArgumentException.class, () -> new CommonTermsQueryBuilder(null, "text"));
assertEquals("field name is null or empty", e.getMessage());
e = expectThrows(IllegalArgumentException.class, () -> new CommonTermsQueryBuilder("", "text"));
assertEquals("field name is null or empty", e.getMessage());
e = expectThrows(IllegalArgumentException.class, () -> new CommonTermsQueryBuilder("fieldName", null));
assertEquals("text cannot be null", e.getMessage());
}
public void testFromJson() throws IOException {
String query =
"{\n" +
" \"common\" : {\n" +
" \"body\" : {\n" +
" \"query\" : \"nelly the elephant not as a cartoon\",\n" +
" \"high_freq_operator\" : \"AND\",\n" +
" \"low_freq_operator\" : \"OR\",\n" +
" \"cutoff_frequency\" : 0.001,\n" +
" \"minimum_should_match\" : {\n" +
" \"low_freq\" : \"2\",\n" +
" \"high_freq\" : \"3\"\n" +
" },\n" +
" \"boost\" : 42.0\n" +
" }\n" +
" }\n" +
"}";
CommonTermsQueryBuilder queryBuilder = (CommonTermsQueryBuilder) parseQuery(query);
checkGeneratedJson(query, queryBuilder);
assertEquals(query, 42, queryBuilder.boost, 0.00001);
assertEquals(query, 0.001, queryBuilder.cutoffFrequency(), 0.0001);
assertEquals(query, Operator.OR, queryBuilder.lowFreqOperator());
assertEquals(query, Operator.AND, queryBuilder.highFreqOperator());
assertEquals(query, "nelly the elephant not as a cartoon", queryBuilder.value());
}
public void testCommonTermsQuery1() throws IOException {
String query = copyToStringFromClasspath("/org/elasticsearch/index/query/commonTerms-query1.json");
Query parsedQuery = parseQuery(query).toQuery(createShardContext());
assertThat(parsedQuery, instanceOf(ExtendedCommonTermsQuery.class));
ExtendedCommonTermsQuery ectQuery = (ExtendedCommonTermsQuery) parsedQuery;
assertThat(ectQuery.getHighFreqMinimumNumberShouldMatchSpec(), nullValue());
assertThat(ectQuery.getLowFreqMinimumNumberShouldMatchSpec(), equalTo("2"));
}
public void testCommonTermsQuery2() throws IOException {
String query = copyToStringFromClasspath("/org/elasticsearch/index/query/commonTerms-query2.json");
Query parsedQuery = parseQuery(query).toQuery(createShardContext());
assertThat(parsedQuery, instanceOf(ExtendedCommonTermsQuery.class));
ExtendedCommonTermsQuery ectQuery = (ExtendedCommonTermsQuery) parsedQuery;
assertThat(ectQuery.getHighFreqMinimumNumberShouldMatchSpec(), equalTo("50%"));
assertThat(ectQuery.getLowFreqMinimumNumberShouldMatchSpec(), equalTo("5<20%"));
}
public void testCommonTermsQuery3() throws IOException {
String query = copyToStringFromClasspath("/org/elasticsearch/index/query/commonTerms-query3.json");
Query parsedQuery = parseQuery(query).toQuery(createShardContext());
assertThat(parsedQuery, instanceOf(ExtendedCommonTermsQuery.class));
ExtendedCommonTermsQuery ectQuery = (ExtendedCommonTermsQuery) parsedQuery;
assertThat(ectQuery.getHighFreqMinimumNumberShouldMatchSpec(), nullValue());
assertThat(ectQuery.getLowFreqMinimumNumberShouldMatchSpec(), equalTo("2"));
}
// see #11730
public void testCommonTermsQuery4() throws IOException {
Query parsedQuery = parseQuery(commonTermsQuery("field", "text")).toQuery(createShardContext());
assertThat(parsedQuery, instanceOf(ExtendedCommonTermsQuery.class));
ExtendedCommonTermsQuery ectQuery = (ExtendedCommonTermsQuery) parsedQuery;
}
public void testParseFailsWithMultipleFields() throws IOException {
String json = "{\n" +
" \"common\" : {\n" +
" \"message1\" : {\n" +
" \"query\" : \"nelly the elephant not as a cartoon\"\n" +
" },\n" +
" \"message2\" : {\n" +
" \"query\" : \"nelly the elephant not as a cartoon\"\n" +
" }\n" +
" }\n" +
"}";
ParsingException e = expectThrows(ParsingException.class, () -> parseQuery(json));
assertEquals("[common] query doesn't support multiple fields, found [message1] and [message2]", e.getMessage());
String shortJson = "{\n" +
" \"common\" : {\n" +
" \"message1\" : \"nelly the elephant not as a cartoon\",\n" +
" \"message2\" : \"nelly the elephant not as a cartoon\"\n" +
" }\n" +
"}";
e = expectThrows(ParsingException.class, () -> parseQuery(shortJson));
assertEquals("[common] query doesn't support multiple fields, found [message1] and [message2]", e.getMessage());
}
}
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