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;
/** A {@link MergeScheduler} that simply does each merge
* sequentially, using the current thread. */
public class SerialMergeScheduler extends MergeScheduler {
/** Just do the merges in sequence. We do this
* "synchronized" so that even if the application is using
* multiple threads, only one merge may run at a time. */
@Override
synchronized public void merge(IndexWriter writer)
throws CorruptIndexException, IOException {
while(true) {
MergePolicy.OneMerge merge = writer.getNextMerge();
if (merge == null)
break;
writer.merge(merge);
}
}
@Override
public void close() {}
}