/*
* 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.MultiTermQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.spans.SpanMultiTermQueryWrapper;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.common.xcontent.XContentParser.Token;
import java.io.IOException;
/**
*
*/
public class SpanMultiTermQueryParser implements QueryParser {
public static final String NAME = "span_multi";
public static final String MATCH_NAME = "match";
@Inject
public SpanMultiTermQueryParser() {
}
@Override
public String[] names() {
return new String[]{NAME, Strings.toCamelCase(NAME)};
}
@Override
public Query parse(QueryParseContext parseContext) throws IOException, QueryParsingException {
XContentParser parser = parseContext.parser();
Token token = parser.nextToken();
if (!MATCH_NAME.equals(parser.currentName()) || token != XContentParser.Token.FIELD_NAME) {
throw new QueryParsingException(parseContext.index(), "spanMultiTerm must have [" + MATCH_NAME + "] multi term query clause");
}
token = parser.nextToken();
if (token != XContentParser.Token.START_OBJECT) {
throw new QueryParsingException(parseContext.index(), "spanMultiTerm must have [" + MATCH_NAME + "] multi term query clause");
}
Query subQuery = parseContext.parseInnerQuery();
if (!(subQuery instanceof MultiTermQuery)) {
throw new QueryParsingException(parseContext.index(), "spanMultiTerm [" + MATCH_NAME + "] must be of type multi term query");
}
parser.nextToken();
return new SpanMultiTermQueryWrapper<>((MultiTermQuery) subQuery);
}
}