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Apache Lucene (module: benchmark)
/**
* 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.lucene.benchmark.quality.utils;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.benchmark.quality.QualityQuery;
import org.apache.lucene.benchmark.quality.QualityQueryParser;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.Query;
/**
* Simplistic quality query parser. A Lucene query is created by passing
* the value of the specified QualityQuery name-value pair into
* a Lucene's QueryParser using StandardAnalyzer. */
public class SimpleQQParser implements QualityQueryParser {
private String qqName;
private String indexField;
ThreadLocal queryParser = new ThreadLocal();
/**
* Constructor of a simple qq parser.
* @param qqName name-value pair of quality query to use for creating the query
* @param indexField corresponding index field
*/
public SimpleQQParser(String qqName, String indexField) {
this.qqName = qqName;
this.indexField = indexField;
}
/* (non-Javadoc)
* @see org.apache.lucene.benchmark.quality.QualityQueryParser#parse(org.apache.lucene.benchmark.quality.QualityQuery)
*/
public Query parse(QualityQuery qq) throws ParseException {
QueryParser qp = (QueryParser) queryParser.get();
if (qp==null) {
qp = new QueryParser(indexField, new StandardAnalyzer());
queryParser.set(qp);
}
return qp.parse(qq.getValue(qqName));
}
}