com.leavesfly.lia.searching.BasicSearchingTest.java Source code

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Here is the source code for com.leavesfly.lia.searching.BasicSearchingTest.java

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package com.leavesfly.lia.searching;

/**
 * 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.SimpleAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.store.Directory;
import org.apache.lucene.index.Term;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.util.Version;

import com.leavesfly.lia.commom.TestUtil;

// From chapter 3
public class BasicSearchingTest extends TestCase {

    public void testTerm() throws Exception {
        Directory dir = TestUtil.getBookIndexDirectory(); //A
        IndexSearcher searcher = new IndexSearcher(dir); //B

        Term t = new Term("subject", "ant");
        Query query = new TermQuery(t);
        TopDocs docs = searcher.search(query, 10);
        assertEquals("Ant in Action", //C
                1, docs.totalHits); //C

        t = new Term("subject", "junit");
        docs = searcher.search(new TermQuery(t), 10);
        assertEquals("Ant in Action, " + //D
                "JUnit in Action, Second Edition", //D
                2, docs.totalHits); //D

        searcher.close();
        dir.close();
    }

    /*
      #A Obtain directory from TestUtil
      #B Create IndexSearcher
      #C Confirm one hit for "ant"
      #D Confirm two hits for "junit"
    */

    public void testKeyword() throws Exception {
        Directory dir = TestUtil.getBookIndexDirectory();
        IndexSearcher searcher = new IndexSearcher(dir);

        Term t = new Term("isbn", "9781935182023");
        Query query = new TermQuery(t);
        TopDocs docs = searcher.search(query, 10);
        assertEquals("JUnit in Action, Second Edition", 1, docs.totalHits);

        searcher.close();
        dir.close();
    }

    public void testQueryParser() throws Exception {
        Directory dir = TestUtil.getBookIndexDirectory();
        IndexSearcher searcher = new IndexSearcher(dir);

        QueryParser parser = new QueryParser(Version.LUCENE_30, //A
                "contents", //A
                new SimpleAnalyzer()); //A

        Query query = parser.parse("+JUNIT +ANT -MOCK"); //B
        TopDocs docs = searcher.search(query, 10);
        assertEquals(1, docs.totalHits);
        Document d = searcher.doc(docs.scoreDocs[0].doc);
        assertEquals("Ant in Action", d.get("title"));

        query = parser.parse("mock OR junit"); //B
        docs = searcher.search(query, 10);
        assertEquals("Ant in Action, " + "JUnit in Action, Second Edition", 2, docs.totalHits);

        searcher.close();
        dir.close();
    }
    /*
    #A Create QueryParser
    #B Parse user's text
    */
}