org.apache.solr.search.PrefixQParserPlugin Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.solr.search;
import org.apache.lucene.index.Term;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.search.PrefixQuery;
import org.apache.lucene.search.Query;
import org.apache.solr.common.params.SolrParams;
import org.apache.solr.common.util.NamedList;
import org.apache.solr.request.SolrQueryRequest;
/**
* Create a prefix query from the input value. Currently no analysis or
* value transformation is done to create this prefix query (subject to change).
*
Other parameters: f
, the field
*
Example: {!prefix f=myfield}foo
is generally equivalent
* to the Lucene query parser expression myfield:foo*
*/
public class PrefixQParserPlugin extends QParserPlugin {
public static String NAME = "prefix";
public void init(NamedList args) {
}
public QParser createParser(String qstr, SolrParams localParams, SolrParams params, SolrQueryRequest req) {
return new QParser(qstr, localParams, params, req) {
public Query parse() throws ParseException {
return new PrefixQuery(new Term(localParams.get(QueryParsing.F), localParams.get(QueryParsing.V)));
}
};
}
}