com.sxc.lucene.searching.BasicSearchingTest.java Source code

Introduction

Here is the source code for com.sxc.lucene.searching.BasicSearchingTest.java

Source

package com.sxc.lucene.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 java.io.File;

import junit.framework.TestCase;

import org.apache.lucene.analysis.cn.smart.SmartChineseAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.Term;
import org.apache.lucene.queryparser.classic.QueryParser;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.util.Version;

// From chapter 3
public class BasicSearchingTest extends TestCase {

    private Directory directory;

    @Override
    protected void setUp() throws Exception { // 1
        directory = FSDirectory.open(new File("D:/programming/lucene/indexingTest"));
    }

    public void testTerm() throws Exception {
        IndexReader reader = DirectoryReader.open(directory); // A
        IndexSearcher searcher = new IndexSearcher(reader); // B

        Term t = new Term("country", "");
        Query query = new TermQuery(t);
        TopDocs docs = searcher.search(query, 1);
        System.out.println(docs.totalHits);

        reader.close();
        directory.close();
    }

    public void testQueryParser() throws Exception {
        IndexReader reader = DirectoryReader.open(directory); // A
        IndexSearcher searcher = new IndexSearcher(reader); // B

        QueryParser parser = new QueryParser(Version.LUCENE_47, "contents",
                new SmartChineseAnalyzer(Version.LUCENE_47));

        Query query = parser.parse("* OR *");
        TopDocs docs = searcher.search(query, 10);
        assertEquals(2, docs.totalHits);
        Document d = searcher.doc(docs.scoreDocs[0].doc);
        assertEquals("", d.get("country"));

        directory.close();
    }

}