001/**
002 *
003 * Licensed to the Apache Software Foundation (ASF) under one
004 * or more contributor license agreements.  See the NOTICE file
005 * distributed with this work for additional information
006 * regarding copyright ownership.  The ASF licenses this file
007 * to you under the Apache License, Version 2.0 (the
008 * "License"); you may not use this file except in compliance
009 * with the License.  You may obtain a copy of the License at
010 *
011 *     http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 */
019package org.apache.hadoop.hbase;
020
021import org.apache.yetus.audience.InterfaceAudience;
022
023/**
024 * Ways to keep cells marked for delete around.
025 */
026/*
027 * Don't change the TRUE/FALSE labels below, these have to be called
028 * this way for backwards compatibility.
029 */
030@InterfaceAudience.Public
031public enum KeepDeletedCells {
032  /** Deleted Cells are not retained. */
033  FALSE,
034  /**
035   * Deleted Cells are retained until they are removed by other means
036   * such TTL or VERSIONS.
037   * If no TTL is specified or no new versions of delete cells are
038   * written, they are retained forever.
039   */
040  TRUE,
041  /**
042   * Deleted Cells are retained until the delete marker expires due to TTL.
043   * This is useful when TTL is combined with MIN_VERSIONS and one
044   * wants to keep a minimum number of versions around but at the same
045   * time remove deleted cells after the TTL.
046   */
047  TTL;
048  public static KeepDeletedCells getValue(String val) {
049    return valueOf(val.toUpperCase());
050  }
051}