/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
 * or http://forgerock.org/license/CDDLv1.0.html.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at legal-notices/CDDLv1_0.txt.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information:
 *      Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 *
 *
 *      Copyright 2006-2010 Sun Microsystems, Inc.
 *      Portions Copyright 2015 ForgeRock AS.
 */
package org.opends.server.replication.plugin;

/**
 * Enumeration used for storing type of attribute modification
 * in the value of the replication historical information.
 *
 * Example of ds-sync-hist values:
 * ds-sync-hist: attrName1:changeNumber1:repl:newReplacingValue
 * ds-sync-hist: attrName1:changeNumber2:del:deletedValue
 * ds-sync-hist: attrName3:changeNumber3:add:newAddedvalue
 * ds-sync-hist: attrName3:changeNumber4:attrDel
 */
public enum HistAttrModificationKey
{
  /** The key for attribute value deletion. */
  DEL("del"),
  /** The key for attribute deletion. */
  ATTRDEL("attrDel"),
  /** The key for attribute replace. */
  REPL("repl"),
  /** The key for attribute value addition. */
  ADD("add");

  /** The string representation of this key. */
  private String key;

  /**
   * Creates a new HistKey type with the provided key string.
   *
   * @param histkey The key string
   */
  private HistAttrModificationKey(String histkey)
  {
    this.key = histkey;
  }

  /**
   * Get a key from the String representation.
   *
   * @param histkey the String to decode
   * @return the key from the enum type
   */
  public static HistAttrModificationKey decodeKey(String histkey)
  {
    for (HistAttrModificationKey histKey : values())
    {
      if (histKey.toString().equals(histkey))
      {
        return histKey;
      }
    }
    return null;
  }

  /**
   * Retrieves the human-readable name for this HistKey.
   *
   * @return  The human-readable name for this HistKey.
   */
  public String getKey()
  {
    return key;
  }

  /**
   * Retrieves a string representation of this HistKey.
   *
   * @return  A string representation of this HistKey.
   */
  @Override
  public String toString()
  {
    return key;
  }
}