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

Introduction

Here is the source code for aos.lucene.search.msc.PrefixQueryTest.java

Source

/****************************************************************
 * Licensed to the AOS Community (AOS) under one or more        *
 * contributor license agreements.  See the NOTICE file         *
 * distributed with this work for additional information        *
 * regarding copyright ownership.  The AOS licenses this file   *
 * to you 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 language governing permissions and limitations      *
 * under the License.                                           *
 ****************************************************************/
package aos.lucene.search.msc;

import junit.framework.TestCase;

import org.apache.lucene.index.Term;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.PrefixQuery;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.store.Directory;

import io.aos.lucene.util.TestUtil;

// From chapter 3
public class PrefixQueryTest extends TestCase {
    public void testPrefix() throws Exception {
        Directory dir = TestUtil.getBookIndexDirectory();
        IndexSearcher searcher = new IndexSearcher(dir);

        Term term = new Term("category", //#A
                "/technology/computers/programming"); //#A
        PrefixQuery query = new PrefixQuery(term); //#A

        TopDocs matches = searcher.search(query, 10); //#A
        int programmingAndBelow = matches.totalHits;

        matches = searcher.search(new TermQuery(term), 10); //#B
        int justProgramming = matches.totalHits;

        assertTrue(programmingAndBelow > justProgramming);
        searcher.close();
        dir.close();
    }
}

/*
  #A Search, including subcategories
  #B Search, without subcategories
*/