content: /*
   * This file is part of "JTA - Telnet/SSH for the JAVA(tm) platform".
   *
   * (c) Matthias L. Jugel, Marcus Meißner 1996-2005. All Rights Reserved.
   *
   * Please visit http://javatelnet.org/ for updates and contact.
   *
   * --LICENSE NOTICE--
   * This program 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
   * of the License, or (at your option) any later version.
   *
   * This program 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 this program; if not, write to the Free Software
   * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   * --LICENSE NOTICE--
   *
   */
  package de.mud.jta;
  
  
  /**
   * Plugin base class for the JTA. A plugin is a component
   * for the PluginBus and may occur several times. If we have more than one
   * plugin of the same type the protected value id contains the unique plugin
   * id as configured in the configuration.
   * <P>
   * <B>Maintainer:</B> Matthias L. Jugel
   *
   * @version $Id: Plugin.java 499 2005-09-29 08:24:54Z leo $
   * @author Matthias L. Jugel, Marcus Mei�ner
   */
  public class Plugin {
    /** holds the plugin bus used for communication between plugins */
    protected PluginBus bus;
    /**
     * in case we have several plugins of the same type this contains their
     * unique id
     */
    protected String id;
  
    /**
     * Create a new plugin and set the plugin bus used by this plugin and
     * the unique id. The unique id may be null if there is only one plugin
     * used by the system.
     * @param bus the plugin bus
     * @param id the unique plugin id
     */
    public Plugin(PluginBus bus, String id) {
      this.bus = bus;
      this.id = id;
    }
  
    /**
     * Return identifier for this plugin.
     * @return id string
     */
    public String getId() {
      return id;
    }
  
    /**
     * Print an error message to stderr prepending the plugin name. This method
     * is public due to compatibility with Java 1.1
     * @param msg the error message
     */
    public void error(String msg) {
      String name = getClass().toString();
      name = name.substring(name.lastIndexOf('.') + 1);
      System.err.println(name + (id != null ? "(" + id + ")" : "") + ": " + msg);
    }
  }
  