1 package org.apache.lucene.queryParser.precedence;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
5 * contributor license agreements. See the NOTICE file distributed with
6 * this work for additional information regarding copyright ownership.
7 * The ASF licenses this file to You under the Apache License, Version 2.0
8 * (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
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20 import org.apache.lucene.analysis.Analyzer;
21 import org.apache.lucene.queryParser.precedence.processors.PrecedenceQueryNodeProcessorPipeline;
22 import org.apache.lucene.queryParser.standard.StandardQueryParser;
23 import org.apache.lucene.queryParser.standard.processors.StandardQueryNodeProcessorPipeline;
27 * This query parser works exactly as the standard query parser ( {@link StandardQueryParser} ),
28 * except that it respect the boolean precedence, so <a AND b OR c AND d> is parsed to <(+a +b) (+c +d)>
29 * instead of <+a +b +c +d>.
32 * EXPERT: This class extends {@link StandardQueryParser}, but uses {@link PrecedenceQueryNodeProcessorPipeline}
33 * instead of {@link StandardQueryNodeProcessorPipeline} to process the query tree.
36 * @see StandardQueryParser
38 public class PrecedenceQueryParser extends StandardQueryParser {
41 * @see StandardQueryParser#StandardQueryParser()
43 public PrecedenceQueryParser() {
44 setQueryNodeProcessor(new PrecedenceQueryNodeProcessorPipeline(getQueryConfigHandler()));
48 * @see StandardQueryParser#StandardQueryParser(Analyzer)
50 public PrecedenceQueryParser(Analyzer analyer) {
53 setQueryNodeProcessor(new PrecedenceQueryNodeProcessorPipeline(getQueryConfigHandler()));