/*
* 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.search.Query;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.common.xcontent.XContentParser;
import java.io.IOException;
/**
* Query parser for JSON Queries.
*/
public class WrapperQueryParser implements QueryParser {
public static final String NAME = "wrapper";
@Inject
public WrapperQueryParser() {
}
@Override
public String[] names() {
return new String[]{NAME};
}
@Override
public Query parse(QueryParseContext parseContext) throws IOException, QueryParsingException {
XContentParser parser = parseContext.parser();
XContentParser.Token token = parser.nextToken();
if (token != XContentParser.Token.FIELD_NAME) {
throw new QueryParsingException(parseContext.index(), "[wrapper] query malformed");
}
String fieldName = parser.currentName();
if (!fieldName.equals("query")) {
throw new QueryParsingException(parseContext.index(), "[wrapper] query malformed");
}
parser.nextToken();
byte[] querySource = parser.binaryValue();
try (XContentParser qSourceParser = XContentFactory.xContent(querySource).createParser(querySource)) {
final QueryParseContext context = new QueryParseContext(parseContext.index(), parseContext.indexQueryParserService());
context.reset(qSourceParser);
Query result = context.parseInnerQuery();
parser.nextToken();
return result;
}
}
}