--- /dev/null
+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.store.Directory;
+import org.apache.lucene.util.LuceneTestCase;
+import org.apache.lucene.index.IndexReader;
+import org.apache.lucene.index.RandomIndexWriter;
+import org.apache.lucene.index.Term;
+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 {
+ Directory directory = newDirectory();
+
+ String[] categories = new String[] {"/Computers",
+ "/Computers/Mac",
+ "/Computers/Windows"};
+ RandomIndexWriter writer = new RandomIndexWriter(random, directory);
+ for (int i = 0; i < categories.length; i++) {
+ Document doc = new Document();
+ doc.add(newField("category", categories[i], Field.Store.YES, Field.Index.NOT_ANALYZED));
+ writer.addDocument(doc);
+ }
+ IndexReader reader = writer.getReader();
+
+ PrefixQuery query = new PrefixQuery(new Term("category", "/Computers"));
+ IndexSearcher searcher = newSearcher(reader);
+ 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);
+ writer.close();
+ searcher.close();
+ reader.close();
+ directory.close();
+ }
+}