/*
* Licensed to ElasticSearch and Shay Banon 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.Filter;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.lucene.search.TermFilter;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.index.mapper.DocumentMapper;
import org.elasticsearch.index.mapper.internal.TypeFieldMapper;
import java.io.IOException;
public class TypeFilterParser implements FilterParser {
public static final String NAME = "type";
@Inject
public TypeFilterParser() {
}
@Override
public String[] names() {
return new String[]{NAME};
}
@Override
public Filter 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(), "[type] filter should have a value field, and the type name");
}
String fieldName = parser.currentName();
if (!fieldName.equals("value")) {
throw new QueryParsingException(parseContext.index(), "[type] filter should have a value field, and the type name");
}
token = parser.nextToken();
if (token != XContentParser.Token.VALUE_STRING) {
throw new QueryParsingException(parseContext.index(), "[type] filter should have a value field, and the type name");
}
String type = parser.text();
// move to the next token
parser.nextToken();
Filter filter;
DocumentMapper documentMapper = parseContext.mapperService().documentMapper(type);
if (documentMapper == null) {
filter = new TermFilter(TypeFieldMapper.TERM_FACTORY.createTerm(type));
} else {
filter = documentMapper.typeFilter();
}
return parseContext.cacheFilter(filter, null);
}
}