com.mathworks.xzheng.tools.FlexibleQueryParserTest.java Source code

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Here is the source code for com.mathworks.xzheng.tools.FlexibleQueryParserTest.java

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package com.mathworks.xzheng.tools;

/**
 * Copyright Manning Publications Co.
 *
 * Licensed 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 lan      
*/

import junit.framework.TestCase;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.queryparser.flexible.core.QueryNodeException;
import org.apache.lucene.queryparser.flexible.standard.StandardQueryParser;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.search.spans.SpanNearQuery;
import org.apache.lucene.util.Version;

// From chapter 9
public class FlexibleQueryParserTest extends TestCase {

    public void testSimple() throws Exception {
        Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_46);
        StandardQueryParser parser = new StandardQueryParser(analyzer);
        Query q = null;
        try {
            q = parser.parse("(agile OR extreme) AND methodology", "subject");
        } catch (QueryNodeException exc) {
            // TODO: handle exc
        }
        System.out.println("parsed " + q);
    }

    public void testNoFuzzyOrWildcard() throws Exception {
        Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_46);
        StandardQueryParser parser = new CustomFlexibleQueryParser(analyzer);
        try {
            parser.parse("agil*", "subject");
            fail("didn't hit expected exception");
        } catch (QueryNodeException exc) {
            // expected
        }

        try {
            parser.parse("agil~0.8", "subject");
            fail("didn't hit expected exception");
        } catch (QueryNodeException exc) {
            // expected
        }
    }

    public void testPhraseQuery() throws Exception {
        Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_46);
        StandardQueryParser parser = new CustomFlexibleQueryParser(analyzer);

        Query query = parser.parse("singleTerm", "subject");
        assertTrue("TermQuery", query instanceof TermQuery);

        query = parser.parse("\"a phrase test\"", "subject");
        System.out.println("got query=" + query);
        assertTrue("SpanNearQuery", query instanceof SpanNearQuery);
    }

}