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* 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
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package org.elasticsearch.index.query;
import org.apache.lucene.search.BooleanClause;
import org.apache.lucene.search.BooleanQuery;
import org.apache.lucene.search.ConstantScoreQuery;
import org.apache.lucene.search.MatchNoDocsQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TermQuery;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.search.internal.SearchContext;
import org.elasticsearch.test.AbstractQueryTestCase;
import java.io.IOException;
import java.util.Collection;
import static org.hamcrest.CoreMatchers.containsString;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.instanceOf;
public class ExistsQueryBuilderTests extends AbstractQueryTestCase<ExistsQueryBuilder> {
@Override
protected ExistsQueryBuilder doCreateTestQueryBuilder() {
String fieldPattern;
if (randomBoolean()) {
fieldPattern = randomFrom(MAPPED_FIELD_NAMES);
} else {
fieldPattern = randomAlphaOfLengthBetween(1, 10);
}
// also sometimes test wildcard patterns
if (randomBoolean()) {
if (randomBoolean()) {
fieldPattern = fieldPattern + "*";
} else {
fieldPattern = MetaData.ALL;
}
}
return new ExistsQueryBuilder(fieldPattern);
}
@Override
protected void doAssertLuceneQuery(ExistsQueryBuilder queryBuilder, Query query, SearchContext context) throws IOException {
String fieldPattern = queryBuilder.fieldName();
Collection<String> fields = context.getQueryShardContext().simpleMatchToIndexNames(fieldPattern);
if (getCurrentTypes().length == 0) {
assertThat(query, instanceOf(MatchNoDocsQuery.class));
MatchNoDocsQuery matchNoDocsQuery = (MatchNoDocsQuery) query;
assertThat(matchNoDocsQuery.toString(null), containsString("Missing types in \"exists\" query."));
} else if (fields.size() == 1) {
assertThat(query, instanceOf(ConstantScoreQuery.class));
ConstantScoreQuery constantScoreQuery = (ConstantScoreQuery) query;
assertThat(constantScoreQuery.getQuery(), instanceOf(TermQuery.class));
TermQuery termQuery = (TermQuery) constantScoreQuery.getQuery();
assertEquals(fields.iterator().next(), termQuery.getTerm().text());
} else {
assertThat(query, instanceOf(ConstantScoreQuery.class));
ConstantScoreQuery constantScoreQuery = (ConstantScoreQuery) query;
assertThat(constantScoreQuery.getQuery(), instanceOf(BooleanQuery.class));
BooleanQuery booleanQuery = (BooleanQuery) constantScoreQuery.getQuery();
assertThat(booleanQuery.clauses().size(), equalTo(fields.size()));
for (int i = 0; i < fields.size(); i++) {
BooleanClause booleanClause = booleanQuery.clauses().get(i);
assertThat(booleanClause.getOccur(), equalTo(BooleanClause.Occur.SHOULD));
}
}
}
public void testIllegalArguments() {
expectThrows(IllegalArgumentException.class, () -> new ExistsQueryBuilder((String) null));
expectThrows(IllegalArgumentException.class, () -> new ExistsQueryBuilder(""));
}
public void testFromJson() throws IOException {
String json =
"{\n" +
" \"exists\" : {\n" +
" \"field\" : \"user\",\n" +
" \"boost\" : 42.0\n" +
" }\n" +
"}";
ExistsQueryBuilder parsed = (ExistsQueryBuilder) parseQuery(json);
checkGeneratedJson(json, parsed);
assertEquals(json, 42.0, parsed.boost(), 0.0001);
assertEquals(json, "user", parsed.fieldName());
}
}