/*

  Copyright (C) 2007 Grid Systems, S.A.

  This library is free software; you can redistribute it and/or

  modify it under the terms of the GNU Lesser General Public

  License as published by the Free Software Foundation; either

  version 2.1 of the License, or (at your option) any later version.

  This library 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

  Lesser General Public License for more details.

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

  License along with this library; if not, write to the Free Software

  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA

 */

 package nextgrid.api.pom;

 import org.apache.commons.discovery.tools.DiscoverSingleton;

 /**

  * Type description.

  *

  * @author Rodrigo Ruiz

  */

 public final class ProcessFactoryFinder {

   /**

    * Hidden to prevent instantiation.

    */

   private ProcessFactoryFinder() {

   }

   /**

    * Cleans the cached factory instance. This method can be used to

    * clean up the system before shutting down, or to force a new instance

    * to be created the next time {@link #getFactory()} is invoked.

    *

    */

   public static void release() {

     DiscoverSingleton.release(ProcessFactory.class);

   }

   /**

    * Gets a process factory instance.

    *

    * @return A ProcessFactory instance

    */

   public static ProcessFactory getFactory() {

     Object instance = DiscoverSingleton.find(ProcessFactory.class);

     if (instance == null) {

       throw new InternalError("Could not find a ProcessFactory implementation");

     }

     return (ProcessFactory)instance;

   }

 }