Improvements suggested by UCDetector: remove dead code, add final keywords,...

Jean-Noël Rouvignac

22.56.2016 83f86f11c27378d650c3bfc7e55397687062edbc

 opendj-server-legacy/src/main/java/org/opends/server/tools/upgrade/UpgradeTask.java

@@ -11,45 +11,15 @@
 * Header, with the fields enclosed by brackets [] replaced by your own identifying
 * information: "Portions Copyright [year] [name of copyright owner]".
 *
 * Copyright 2013-2015 ForgeRock AS.
 * Copyright 2013-2016 ForgeRock AS.
 */

package org.opends.server.tools.upgrade;

import com.forgerock.opendj.cli.ClientException;

/**
 * An upgrade task.
 */
public interface UpgradeTask
/** An upgrade task. */
interface UpgradeTask
{

  /**
   * Defines the different types of upgrade tasks.
   */
  public enum TaskType {
    /**
     * Defines a standard task.
     */
    NORMAL,
    /**
     * Defines a task which require a standard user interaction.
     */
    NEED_USER_INTERACTION,
    /**
     * Defines a critical task which require an imperative user interaction.
     */
    MANDATORY_USER_INTERACTION,
    /**
     * Defines a task which take a long time to complete.
     */
    TAKE_LONG_TIME_TO_COMPLETE,
    /**
     * Defines a task which cannot be reverted once started.
     */
    CANNOT_BE_REVERTED
  }

  /**
   * Performs any preparation work required before performing the upgrade task, including
   * interacting with the user where needed (e.g. in order to ask for confirmation), and throw a