pylucene 3.5.0-3

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

diff --git a/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/index/MergeScheduler.java b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/index/MergeScheduler.java
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+++ b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/index/MergeScheduler.java
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+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;
+
+/** <p>Expert: {@link IndexWriter} uses an instance
+ *  implementing this interface to execute the merges
+ *  selected by a {@link MergePolicy}.  The default
+ *  MergeScheduler is {@link ConcurrentMergeScheduler}.</p>
+ *
+ * @lucene.experimental
+*/
+public abstract class MergeScheduler {
+
+  /** Run the merges provided by {@link IndexWriter#getNextMerge()}. */
+  public abstract void merge(IndexWriter writer)
+    throws CorruptIndexException, IOException;
+
+  /** Close this MergeScheduler. */
+  public abstract void close()
+    throws CorruptIndexException, IOException;
+}