org.apache.lucene.index.NoDeletionPolicy Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of aem-sdk-api Show documentation

The Adobe Experience Manager SDK

There is a newer version: 2024.11.18598.20241113T125352Z-241000

/*
 * COPIED FROM APACHE LUCENE 4.7.2
 *
 * Git URL: [email protected]:apache/lucene.git, tag: releases/lucene-solr/4.7.2, path: lucene/core/src/java
 *
 * (see https://issues.apache.org/jira/browse/OAK-10786 for details)
 */

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.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 extends IndexDeletionPolicy {

  /** The single instance of this class. */
  public static final IndexDeletionPolicy INSTANCE = new NoDeletionPolicy();
  
  private NoDeletionPolicy() {
    // keep private to avoid instantiation
  }
  
  @Override
  public void onCommit(List commits) {}

  @Override
  public void onInit(List commits) {}

  @Override
  public IndexDeletionPolicy clone() {
    return this;
  }

}