mosgi.jmx.rmiconnector/src/main/java/org/apache/felix/mosgi/jmx/rmiconnector/mx4j/remote/ProviderHelper.java

/*
 *   Copyright 2005 The Apache Software Foundation
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 *
 */
package org.apache.felix.mosgi.jmx.rmiconnector.mx4j.remote;

import java.security.AccessController;
import java.security.PrivilegedAction;

import org.osgi.service.log.LogService;

import org.apache.felix.mosgi.jmx.rmiconnector.RmiConnectorActivator;

/**
 *
 * @version $Revision: 1.2 $
 */
public abstract class ProviderHelper
{
   protected static String normalizeProtocol(String protocol)
   {
      // Replace special chars as required by the spec
      String normalized = protocol.replace('+', '.');
      normalized = normalized.replace('-', '_');
      RmiConnectorActivator.log(LogService.LOG_INFO, "Normalizing protocol: " + protocol + " --> " + normalized, null);
      return normalized;
   }

   protected static String findSystemPackageList(final String key)
   {
      String providerPackages = (String)AccessController.doPrivileged(new PrivilegedAction()
      {
         public Object run()
         {
            return System.getProperty(key);
         }
      });
      RmiConnectorActivator.log(LogService.LOG_DEBUG,"Packages in the system property '" + key + "': " + providerPackages,null);
      return providerPackages;
   }

   protected static Class loadClass(String className, ClassLoader loader) throws ClassNotFoundException
   {
      RmiConnectorActivator.log(LogService.LOG_DEBUG,"Loading class: " + className +" From "+loader,null);
      if (loader == null){
         loader= ProviderHelper.class.getClassLoader();
         RmiConnectorActivator.log(LogService.LOG_DEBUG,"a new loader "+loader,null);
         
         	//Thread.currentThread().getContextClassLoader();
      }
      return loader.loadClass(className);
   }

   protected static String constructClassName(String packageName, String protocol, String className)
   {
      return new StringBuffer(packageName).append(".").append(protocol).append(".").append(className).toString();
   }

}