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package org.eclipse.net4j.util;


import org.eclipse.net4j.util.eclipse.AbstractPlugin;

import org.eclipse.core.runtime.FileLocator;

import org.apache.log4j.xml.DOMConfigurator;

import org.osgi.framework.BundleContext;

import java.net.URL;


public class Net4jUtilPlugin extends AbstractPlugin
{
  //The shared instance.
  private static Net4jUtilPlugin plugin;

  /**
   * The constructor.
   */
  public Net4jUtilPlugin()
  {
    if (plugin == null) plugin = this;
  }

  public void start(BundleContext context) throws Exception
  {
    super.start(context);
    initializeLogger();
  }

  protected void doStop() throws Exception
  {
    plugin = null;
  }

  /**
   * Returns the shared instance.
   */
  public static Net4jUtilPlugin getDefault()
  {
    return plugin;
  }

  private void initializeLogger()
  {
    //    IOHelper.log("Initializing Log4j...");

    try
    {
      URL pluginURL = getBundle().getEntry("/config/log4j.xml");
      URL absoluteURL = FileLocator.toFileURL(pluginURL);

      DOMConfigurator.configure(absoluteURL);
    }
    catch (Exception ex)
    {
      IOHelper.log("Warning: Initialization of Log4j failed", ex);
    }
  }
}