import org.pentaho.di.core.ObjectUsageCount; //导入依赖的package包/类
protected synchronized void init() {
	properties = new Properties();
       pluginHistory = new ArrayList<ObjectUsageCount>();

       setDefault();
       loadProps();
       addDefaultEntries();
       
       loadPluginHistory();

	loadScreens();
       loadLastUsedFiles();
       loadOpenTabFiles();
       
       //load the editables
       ResolverUtil<GUIOption<Object>> res = new ResolverUtil<GUIOption<Object>>();
       res.find(new ResolverUtil.IsA(GUIOption.class),"org.pentaho.di.core");
       List<GUIOption<Object>> leditables = new ArrayList<GUIOption<Object>>();
       for (Class<? extends GUIOption<Object>>c:res.getClasses())
       {
       	try
       	{
       		if (c.isInterface())
       			continue;
       		
       		leditables.add(c.newInstance());
       	}
       	catch(Exception e)
       	{
       		e.printStackTrace(); //TODO: either handle it or ignore it stack trace is good for now
       	}
       }
       
       editables = Collections.unmodifiableList(leditables);

}
 

import org.pentaho.di.core.ObjectUsageCount; //导入依赖的package包/类
@SuppressWarnings("unchecked")
protected synchronized void init() {
	super.createLogChannel();
	properties = new Properties();
       pluginHistory = new ArrayList<ObjectUsageCount>();

       setDefault();
       loadProps();
       addDefaultEntries();
       
       loadPluginHistory();

	loadScreens();
       loadLastUsedFiles();
       loadOpenTabFiles();

       PluginRegistry registry = PluginRegistry.getInstance();
       List<PluginInterface> plugins = registry.getPlugins(LifecyclePluginType.class);
       List<GUIOption<Object>> leditables = new ArrayList<GUIOption<Object>>();
       for (PluginInterface plugin : plugins) {
       	try {
       		leditables.add( registry.loadClass(plugin, GUIOption.class) );
       	} catch(Exception e) {
       		LogChannel.GENERAL.logError("Unexpected error loading class for plugin "+plugin.getName(), e);
       	}
       }
       
       editables = Collections.unmodifiableList(leditables);

}
 

import org.pentaho.di.core.ObjectUsageCount; //导入依赖的package包/类
@SuppressWarnings( "unchecked" )
protected synchronized void init() {
  super.createLogChannel();
  properties = new Properties();
  pluginHistory = new ArrayList<ObjectUsageCount>();

  setDefault();
  loadProps();
  addDefaultEntries();

  loadPluginHistory();

  loadScreens();
  loadLastUsedFiles();
  loadLastUsedRepoFiles();
  loadOpenTabFiles();
  resetRecentSearches();

  PluginRegistry registry = PluginRegistry.getInstance();
  List<PluginInterface> plugins = registry.getPlugins( LifecyclePluginType.class );
  List<GUIOption<Object>> leditables = new ArrayList<GUIOption<Object>>();
  for ( PluginInterface plugin : plugins ) {
    if ( !plugin.getClassMap().keySet().contains( GUIOption.class ) ) {
      continue;
    }

    try {
      GUIOption<Object> loaded = registry.loadClass( plugin, GUIOption.class );
      if ( loaded != null ) {
        leditables.add( loaded );
      }
    } catch ( ClassCastException cce ) {
      // Not all Lifecycle plugins implement GUIOption, keep calm and carry on
      LogChannel.GENERAL.logDebug( "Plugin " + plugin.getIds()[0]
          + " does not implement GUIOption, it will not be editable" );
    } catch ( Exception e ) {
      LogChannel.GENERAL.logError( "Unexpected error loading class for plugin " + plugin.getName(), e );
    }
  }

  editables = Collections.unmodifiableList( leditables );

}