blob: ad200d4407d0736d4cf3e9bcd209b0d78ab0690f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
/*
* 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.apache.lucene.queryparser.classic;
import org.apache.lucene.search.Query;
import org.elasticsearch.common.lucene.search.XConstantScoreQuery;
import org.elasticsearch.index.query.MissingFilterParser;
import org.elasticsearch.index.query.QueryParseContext;
/**
*
*/
public class MissingFieldQueryExtension implements FieldQueryExtension {
public static final String NAME = "_missing_";
@Override
public Query query(QueryParseContext parseContext, String queryText) {
return new XConstantScoreQuery(MissingFilterParser.newFilter(parseContext, queryText,
MissingFilterParser.DEFAULT_EXISTENCE_VALUE, MissingFilterParser.DEFAULT_NULL_VALUE, null));
}
}
|
