pylucene 3.5.0-3

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

diff --git a/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/index/ReadOnlySegmentReader.java b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/index/ReadOnlySegmentReader.java
new file mode 100644 (file)
index 0000000..53e3d2a
--- /dev/null
+++ b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/index/ReadOnlySegmentReader.java
@@ -0,0 +1,36 @@
+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.
+ */
+
+class ReadOnlySegmentReader extends SegmentReader {
+
+  static void noWrite() {
+    throw new UnsupportedOperationException("This IndexReader cannot make any changes to the index (it was opened with readOnly = true)");
+  }
+  
+  @Override
+  protected void acquireWriteLock() {
+    noWrite();
+  }
+
+  // Not synchronized
+  @Override
+  public boolean isDeleted(int n) {
+    return deletedDocs != null && deletedDocs.get(n);
+  }
+}