package org.apache.lucene.search;
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.
*/
import org.apache.lucene.util.LuceneTestCase;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.Term;
import org.apache.lucene.analysis.WhitespaceAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
/**
* Tests {@link PrefixQuery} class.
*
*/
public class TestPrefixQuery extends LuceneTestCase {
public void testPrefixQuery() throws Exception {
RAMDirectory directory = new RAMDirectory();
String[] categories = new String[] {"/Computers",
"/Computers/Mac",
"/Computers/Windows"};
IndexWriter writer = new IndexWriter(directory, new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.LIMITED);
for (int i = 0; i < categories.length; i++) {
Document doc = new Document();
doc.add(new Field("category", categories[i], Field.Store.YES, Field.Index.NOT_ANALYZED));
writer.addDocument(doc);
}
writer.close();
PrefixQuery query = new PrefixQuery(new Term("category", "/Computers"));
IndexSearcher searcher = new IndexSearcher(directory);
ScoreDoc[] hits = searcher.search(query, null, 1000).scoreDocs;
assertEquals("All documents in /Computers category and below", 3, hits.length);
query = new PrefixQuery(new Term("category", "/Computers/Mac"));
hits = searcher.search(query, null, 1000).scoreDocs;
assertEquals("One in /Computers/Mac", 1, hits.length);
}
}