aos.lucene.search.msc.BasicSearchingTest.java Source code

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package aos.lucene.search.msc;

import java.io.File;

import junit.framework.TestCase;

import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.Document;
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;

import io.aos.lucene.analysis.SimpleAnalyzer;
import io.aos.lucene.util.TestUtil;

/**
 * #A Create QueryParser #B Parse user's text
 */
public class BasicSearchingTest extends TestCase {

    public void testTerm() throws Exception {

        Directory dir = FSDirectory.open(new File("target/index"));
        IndexReader reader = DirectoryReader.open(dir);
        IndexSearcher searcher = new IndexSearcher(reader);

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

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

        reader.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_46, "contents", new SimpleAnalyzer());

        Query query = parser.parse("+JUNIT +ANT -MOCK");
        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");
        docs = searcher.search(query, 10);
        assertEquals("Ant in Action, " + "JUnit in Action, Second Edition", 2, docs.totalHits);

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

}