pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / src / test / org / apache / lucene / store / TestWindowsMMap.java

diff --git a/lucene-java-3.5.0/lucene/src/test/org/apache/lucene/store/TestWindowsMMap.java b/lucene-java-3.5.0/lucene/src/test/org/apache/lucene/store/TestWindowsMMap.java
new file mode 100644 (file)
index 0000000..fe6ba0f
--- /dev/null
+++ b/lucene-java-3.5.0/lucene/src/test/org/apache/lucene/store/TestWindowsMMap.java
@@ -0,0 +1,110 @@
+package org.apache.lucene.store;
+
+/**
+ * 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 java.util.Collections;
+import java.io.File;
+
+import org.apache.lucene.util.LuceneTestCase;
+import org.apache.lucene.util._TestUtil;
+
+import org.apache.lucene.analysis.MockAnalyzer;
+import org.apache.lucene.analysis.standard.StandardAnalyzer;
+import org.apache.lucene.document.Document;
+import org.apache.lucene.document.Field;
+import org.apache.lucene.index.IndexReader;
+import org.apache.lucene.index.IndexWriter;
+import org.apache.lucene.index.IndexWriterConfig;
+import org.apache.lucene.index.IndexWriterConfig.OpenMode;
+import org.apache.lucene.search.IndexSearcher;
+
+public class TestWindowsMMap extends LuceneTestCase {
+  
+  private final static String alphabet = "abcdefghijklmnopqrstuvwzyz";
+  
+  @Override
+  public void setUp() throws Exception {
+    super.setUp();
+  }
+  
+  private String randomToken() {
+    int tl = 1 + random.nextInt(7);
+    StringBuilder sb = new StringBuilder();
+    for(int cx = 0; cx < tl; cx ++) {
+      int c = random.nextInt(25);
+      sb.append(alphabet.substring(c, c+1));
+    }
+    return sb.toString();
+  }
+  
+  private String randomField() {
+    int fl = 1 + random.nextInt(3);
+    StringBuilder fb = new StringBuilder();
+    for(int fx = 0; fx < fl; fx ++) {
+      fb.append(randomToken());
+      fb.append(" ");
+    }
+    return fb.toString();
+  }
+  
+  private final static String storePathname = 
+   _TestUtil.getTempDir("testLuceneMmap").getAbsolutePath();
+
+  public void testMmapIndex() throws Exception {
+    // sometimes the directory is not cleaned by rmDir, because on Windows it
+    // may take some time until the files are finally dereferenced. So clean the
+    // directory up front, or otherwise new IndexWriter will fail.
+    File dirPath = new File(storePathname);
+    rmDir(dirPath);
+    MMapDirectory dir = new MMapDirectory(dirPath, null);
+    
+    // plan to add a set of useful stopwords, consider changing some of the
+    // interior filters.
+    MockAnalyzer analyzer = new MockAnalyzer(random);
+    // TODO: something about lock timeouts and leftover locks.
+    IndexWriter writer = new IndexWriter(dir, new IndexWriterConfig(
+        TEST_VERSION_CURRENT, analyzer)
+        .setOpenMode(OpenMode.CREATE));
+    writer.commit();
+    IndexReader reader = IndexReader.open(dir);
+    IndexSearcher searcher = new IndexSearcher(reader);
+    
+    int num = atLeast(1000);
+    for (int dx = 0; dx < num; dx++) {
+      String f = randomField();
+      Document doc = new Document();
+      doc.add(newField("data", f, Field.Store.YES, Field.Index.ANALYZED));     
+      writer.addDocument(doc);
+    }
+    
+    searcher.close();
+    reader.close();
+    writer.close();
+    rmDir(dirPath);
+  }
+
+  private void rmDir(File dir) {
+    if (!dir.exists()) {
+      return;
+    }
+    for (File file : dir.listFiles()) {
+      file.delete();
+    }
+    dir.delete();
+  }
+}