org.apache.lucene.index.MergeTrigger Maven / Gradle / Ivy
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.
*/
/**
* MergeTrigger is passed to
* {@link org.apache.lucene.index.MergePolicy#findMerges(MergeTrigger, org.apache.lucene.index.SegmentInfos, IndexWriter)} to indicate the
* event that triggered the merge.
*/
public enum MergeTrigger {
/**
* Merge was triggered by a segment flush.
*/
SEGMENT_FLUSH,
/**
* Merge was triggered by a full flush. Full flushes
* can be caused by a commit, NRT reader reopen or a close call on the index writer.
*/
FULL_FLUSH,
/**
* Merge has been triggered explicitly by the user.
*/
EXPLICIT,
/**
* Merge was triggered by a successfully finished merge.
*/
MERGE_FINISHED,
/**
* Merge was triggered by a closing IndexWriter.
*/
CLOSING
}