code: /***************************************************************************
   *   Copyright (C) by Fabrizio Montesi                                     *
   *                                                                         *
   *   This program is free software; you can redistribute it and/or modify  *
   *   it under the terms of the GNU Library 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 Library General Public     *
   *   License along with this program; if not, write to the                 *
   *   Free Software Foundation, Inc.,                                       *
   *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
   *                                                                         *
   *   For details about the authors of this software, see the AUTHORS file. *
   ***************************************************************************/
  
  
  package jolie.runtime.embedding;
  
  import jolie.Interpreter;
  import jolie.JolieClassLoader;
  import jolie.runtime.JavaService;
  import jolie.runtime.expression.Expression;
  import jolie.tracer.EmbeddingTraceAction;
  
  
  public class JavaServiceLoader extends EmbeddedServiceLoader
  {
  	private final String servicePath;
  	private final Interpreter interpreter;
  	
  	public JavaServiceLoader( Expression channelDest, String servicePath, Interpreter interpreter )
  	{
  		super( channelDest );
  		this.interpreter = interpreter;
  		this.servicePath = servicePath;
  	}
  
  	public void load()
  		throws EmbeddedServiceLoadingException
  	{
  		try {
  			final JolieClassLoader cl = interpreter.getClassLoader();
  			final Class<?> c = cl.loadClass( servicePath );
  			final Object obj = c.newInstance();
  			if ( !(obj instanceof JavaService) ) {
  				throw new EmbeddedServiceLoadingException( servicePath + " is not a valid JavaService" );
  			}
  			final JavaService service = (JavaService)obj;
  			service.setInterpreter( interpreter );
  			setChannel(	new JavaCommChannel( service ) );
  			
  			interpreter.tracer().trace(	() -> new EmbeddingTraceAction(
  				EmbeddingTraceAction.Type.SERVICE_LOAD,
  				"Java Service Loader",
  				c.getCanonicalName()
  			) );
  		} catch( InstantiationException | IllegalAccessException | ClassNotFoundException e ) {
  			throw new EmbeddedServiceLoadingException( e );
  		}
  	}
  }