pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / src / test / org / apache / lucene / index / TestParallelReaderEmptyIndex.java

diff --git a/lucene-java-3.5.0/lucene/src/test/org/apache/lucene/index/TestParallelReaderEmptyIndex.java b/lucene-java-3.5.0/lucene/src/test/org/apache/lucene/index/TestParallelReaderEmptyIndex.java
new file mode 100644 (file)
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+++ b/lucene-java-3.5.0/lucene/src/test/org/apache/lucene/index/TestParallelReaderEmptyIndex.java
@@ -0,0 +1,125 @@
+package org.apache.lucene.index;
+
+/**
+ * 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.io.IOException;
+
+import org.apache.lucene.store.Directory;
+import org.apache.lucene.util.LuceneTestCase;
+
+import org.apache.lucene.analysis.MockAnalyzer;
+import org.apache.lucene.document.Document;
+import org.apache.lucene.document.Field.Index;
+import org.apache.lucene.document.Field.Store;
+import org.apache.lucene.document.Field.TermVector;
+import org.apache.lucene.index.IndexWriterConfig.OpenMode;
+
+/**
+ * Some tests for {@link ParallelReader}s with empty indexes
+ * 
+ * @author Christian Kohlschuetter
+ */
+public class TestParallelReaderEmptyIndex extends LuceneTestCase {
+
+  /**
+   * Creates two empty indexes and wraps a ParallelReader around. Adding this
+   * reader to a new index should not throw any exception.
+   * 
+   * @throws IOException
+   */
+  public void testEmptyIndex() throws IOException {
+    Directory rd1 = newDirectory();
+    IndexWriter iw = new IndexWriter(rd1, newIndexWriterConfig( TEST_VERSION_CURRENT, new MockAnalyzer(random)));
+    iw.close();
+
+    Directory rd2 = newDirectory(rd1);
+
+    Directory rdOut = newDirectory();
+
+    IndexWriter iwOut = new IndexWriter(rdOut, newIndexWriterConfig( TEST_VERSION_CURRENT, new MockAnalyzer(random)));
+    ParallelReader pr = new ParallelReader();
+    pr.add(IndexReader.open(rd1,true));
+    pr.add(IndexReader.open(rd2,true));
+               
+    // When unpatched, Lucene crashes here with a NoSuchElementException (caused by ParallelTermEnum)
+    iwOut.addIndexes(new IndexReader[] { pr });
+               
+    iwOut.forceMerge(1);
+    iwOut.close();
+    rdOut.close();
+    rd1.close();
+    rd2.close();
+  }
+
+  /**
+   * This method creates an empty index (numFields=0, numDocs=0) but is marked
+   * to have TermVectors. Adding this index to another index should not throw
+   * any exception.
+   */
+  public void testEmptyIndexWithVectors() throws IOException {
+    Directory rd1 = newDirectory();
+    {
+      IndexWriter iw = new IndexWriter(rd1, newIndexWriterConfig( TEST_VERSION_CURRENT, new MockAnalyzer(random)));
+      Document doc = new Document();
+      doc.add(newField("test", "", Store.NO, Index.ANALYZED,
+                        TermVector.YES));
+      iw.addDocument(doc);
+      doc.add(newField("test", "", Store.NO, Index.ANALYZED,
+                        TermVector.NO));
+      iw.addDocument(doc);
+      iw.close();
+
+      IndexReader ir = IndexReader.open(rd1,false);
+      ir.deleteDocument(0);
+      ir.close();
+
+      iw = new IndexWriter(rd1, newIndexWriterConfig( TEST_VERSION_CURRENT, new MockAnalyzer(random)).setOpenMode(OpenMode.APPEND));
+      iw.forceMerge(1);
+      iw.close();
+    }
+
+    Directory rd2 = newDirectory();
+    {
+      IndexWriter iw = new IndexWriter(rd2, newIndexWriterConfig( TEST_VERSION_CURRENT, new MockAnalyzer(random)));
+      Document doc = new Document();
+      iw.addDocument(doc);
+      iw.close();
+    }
+
+    Directory rdOut = newDirectory();
+
+    IndexWriter iwOut = new IndexWriter(rdOut, newIndexWriterConfig( TEST_VERSION_CURRENT, new MockAnalyzer(random)));
+    ParallelReader pr = new ParallelReader();
+    pr.add(IndexReader.open(rd1,true));
+    pr.add(IndexReader.open(rd2,true));
+
+    // When unpatched, Lucene crashes here with an ArrayIndexOutOfBoundsException (caused by TermVectorsWriter)
+    iwOut.addIndexes(new IndexReader[] { pr });
+
+    // ParallelReader closes any IndexReader you added to it:
+    pr.close();
+
+    rd1.close();
+    rd2.close();
+               
+    iwOut.forceMerge(1);
+    iwOut.close();
+    
+    rdOut.close();
+  }
+}