pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / src / test / org / apache / lucene / search / TestPrefixFilter.java

diff --git a/lucene-java-3.5.0/lucene/src/test/org/apache/lucene/search/TestPrefixFilter.java b/lucene-java-3.5.0/lucene/src/test/org/apache/lucene/search/TestPrefixFilter.java
new file mode 100644 (file)
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+++ b/lucene-java-3.5.0/lucene/src/test/org/apache/lucene/search/TestPrefixFilter.java
@@ -0,0 +1,109 @@
+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.Directory;
+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 PrefixFilter} class.
+ *
+ */
+public class TestPrefixFilter extends LuceneTestCase {
+  public void testPrefixFilter() throws Exception {
+    Directory directory = newDirectory();
+
+    String[] categories = new String[] {"/Computers/Linux",
+                                        "/Computers/Mac/One",
+                                        "/Computers/Mac/Two",
+                                        "/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();
+
+    // PrefixFilter combined with ConstantScoreQuery
+    PrefixFilter filter = new PrefixFilter(new Term("category", "/Computers"));
+    Query query = new ConstantScoreQuery(filter);
+    IndexSearcher searcher = newSearcher(reader);
+    ScoreDoc[] hits = searcher.search(query, null, 1000).scoreDocs;
+    assertEquals(4, hits.length);
+
+    // test middle of values
+    filter = new PrefixFilter(new Term("category", "/Computers/Mac"));
+    query = new ConstantScoreQuery(filter);
+    hits = searcher.search(query, null, 1000).scoreDocs;
+    assertEquals(2, hits.length);
+
+    // test start of values
+    filter = new PrefixFilter(new Term("category", "/Computers/Linux"));
+    query = new ConstantScoreQuery(filter);
+    hits = searcher.search(query, null, 1000).scoreDocs;
+    assertEquals(1, hits.length);
+
+    // test end of values
+    filter = new PrefixFilter(new Term("category", "/Computers/Windows"));
+    query = new ConstantScoreQuery(filter);
+    hits = searcher.search(query, null, 1000).scoreDocs;
+    assertEquals(1, hits.length);
+
+    // test non-existant
+    filter = new PrefixFilter(new Term("category", "/Computers/ObsoleteOS"));
+    query = new ConstantScoreQuery(filter);
+    hits = searcher.search(query, null, 1000).scoreDocs;
+    assertEquals(0, hits.length);
+
+    // test non-existant, before values
+    filter = new PrefixFilter(new Term("category", "/Computers/AAA"));
+    query = new ConstantScoreQuery(filter);
+    hits = searcher.search(query, null, 1000).scoreDocs;
+    assertEquals(0, hits.length);
+
+    // test non-existant, after values
+    filter = new PrefixFilter(new Term("category", "/Computers/ZZZ"));
+    query = new ConstantScoreQuery(filter);
+    hits = searcher.search(query, null, 1000).scoreDocs;
+    assertEquals(0, hits.length);
+
+    // test zero length prefix
+    filter = new PrefixFilter(new Term("category", ""));
+    query = new ConstantScoreQuery(filter);
+    hits = searcher.search(query, null, 1000).scoreDocs;
+    assertEquals(4, hits.length);
+
+    // test non existent field
+    filter = new PrefixFilter(new Term("nonexistantfield", "/Computers"));
+    query = new ConstantScoreQuery(filter);
+    hits = searcher.search(query, null, 1000).scoreDocs;
+    assertEquals(0, hits.length);
+    
+    writer.close();
+    searcher.close();
+    reader.close();
+    directory.close();
+  }
+}