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/* MBeanTrustPermission.java -- Represents a trusted bean source.

   Copyright (C) 2006 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2, or (at your option)

any later version.

GNU Classpath is distributed in the hope that it will be useful, but

WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

General Public License for more details.

You should have received a copy of the GNU General Public License

along with GNU Classpath; see the file COPYING.  If not, write to the

Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

02110-1301 USA.

Linking this library statically or dynamically with other modules is

making a combined work based on this library.  Thus, the terms and

conditions of the GNU General Public License cover the whole

combination.

As a special exception, the copyright holders of this library give you

permission to link this library with independent modules to produce an

executable, regardless of the license terms of these independent

modules, and to copy and distribute the resulting executable under

terms of your choice, provided that you also meet, for each linked

independent module, the terms and conditions of the license of that

module.  An independent module is a module which is not derived from

or based on this library.  If you modify this library, you may extend

this exception to your version of the library, but you are not

obligated to do so.  If you do not wish to do so, delete this

exception statement from your version. */

package javax.management;

import java.security.BasicPermission;

/**

 * Represents the permission held by a trusted source of

 * management beans.  For a bean to be added to a management

 * server, the source of that bean must hold this permission.

 * It has a target, but no actions. Valid values for the target

 * are <code>"register"</code> and <code>"*"</code>, the latter

 * representing both the existing <code>"register"</code> target

 * and any future targets.

 *

 * @author Andrew John Hughes (gnu_andrew@member.fsf.org)

 * @since 1.5

 */

public class MBeanTrustPermission

  extends BasicPermission

{

  /**

   * Compatible with JDK 1.5

   */

  private static final long serialVersionUID = -2952178077029018140L;

  /**

   * Constructs a {@link MBeanTrustPermission} with the given target.

   * The target must be either <code>"register"</code> or <code>"*"</code>.

   * The actions of the permission default to <code>null</code>,

   * so this is equivalent to calling

   * <code>MBeanTrustPermission(target, null)</code>.

   *

   * @param target the target of this permission.

   * @throws NullPointerException if <code>target</code> is null.

   * @throws IllegalArgumentException if the target is other than

   *                                  <code>"register"</code> or <code>"*"</code>.

   * @see #MBeanTrustPermission(String, String)

   */

  public MBeanTrustPermission(String target)

  {

    this(target, null);

  }

  /**

   * Constructs a {@link MBeanTrustPermission} with the given target

   * and actions.  The target must be either <code>"register"</code>

   * or <code>"*"</code>.  The actions must be either <code>null</code>

   * or the empty string, <code>""</code>.

   *

   * @param target the target of this permission.

   * @param actions the actions for this permission.

   * @throws NullPointerException if <code>target</code> is null.

   * @throws IllegalArgumentException if the target is other than

   *                                  <code>"register"</code> or <code>"*"</code>

   *                                  or actions is other than

   *                                  <code>null</code> or <code>""</code>.

   */

  public MBeanTrustPermission(String target, String actions)

  {

    super(target, actions);

    if ((!(target.equals("register"))) &&

        (!(target.equals("*"))))

      throw new IllegalArgumentException("The target must be 'register' or '*'");

    if (actions != null && !(actions.length() == 0))

      throw new IllegalArgumentException("The actions must be null or ''");

  }

}