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 java.util.List;
/**
* An {@link IndexDeletionPolicy} which keeps all index commits around, never
* deleting them. This class is a singleton and can be accessed by referencing
* {@link #INSTANCE}.
*/
public final class NoDeletionPolicy implements IndexDeletionPolicy {
/** The single instance of this class. */
public static final IndexDeletionPolicy INSTANCE = new NoDeletionPolicy();
private NoDeletionPolicy() {
// keep private to avoid instantiation
}
public void onCommit(List<? extends IndexCommit> commits) throws IOException {}
public void onInit(List<? extends IndexCommit> commits) throws IOException {}
}