public  void addAppender(Appender newAppender) 
{
    // Null values for newAppender parameter are strictly forbidden.
    if(newAppender == null)
      return;
    if(appenderList == null) {
      appenderList = new Vector(1);
    }
    if(!appenderList.contains(newAppender))
      appenderList.addElement(newAppender);
}

Attach an appender. If the appender is already in the list in won't be added again.

 public int appendLoopOnAppenders(LoggingEvent event) 
{
    int size = 0;
    Appender appender;
    if(appenderList != null) {
      size = appenderList.size();
      for(int i = 0; i <  size; i++) {
	appender = (Appender) appenderList.elementAt(i);
	appender.doAppend(event);
      }
    }    
    return size;
}

Call the doAppend method on all attached appenders.

 public Enumeration getAllAppenders() 
{
    if(appenderList == null)
      return null;
    else 
      return appenderList.elements();
}

Get all attached appenders as an Enumeration. If there are no attached appenders null is returned.

 public Appender getAppender(String name) 
{
     if(appenderList == null || name == null)
      return null;
     int size = appenderList.size();
     Appender appender;
     for(int i = 0; i <  size; i++) {
       appender = (Appender) appenderList.elementAt(i);
       if(name.equals(appender.getName()))
	  return appender;
     }
     return null;
}

Look for an attached appender named as name.

Return the appender with that name if in the list. Return null otherwise.

 public boolean isAttached(Appender appender) 
{
    if(appenderList == null || appender == null)
      return false;
     int size = appenderList.size();
     Appender a;
     for(int i = 0; i <  size; i++) {
       a  = (Appender) appenderList.elementAt(i);
       if(a == appender)
	  return true;
     }
     return false;
}

Returns true if the specified appender is in the list of attached appenders, false otherwise.

 public  void removeAllAppenders() 
{
    if(appenderList != null) {
      int len = appenderList.size();      
      for(int i = 0; i <  len; i++) {
	Appender a = (Appender) appenderList.elementAt(i);
	a.close();
      }
      appenderList.removeAllElements();
      appenderList = null;      
    }
}

Remove and close all previously attached appenders.

 public  void removeAppender(Appender appender) 
{
    if(appender == null || appenderList == null) 
      return;
    appenderList.removeElement(appender);
}

Remove the appender passed as parameter form the list of attached appenders.

 public  void removeAppender(String name) 
{
    if(name == null || appenderList == null) return;
    int size = appenderList.size();
    for(int i = 0; i <  size; i++) {
      if(name.equals(((Appender)appenderList.elementAt(i)).getName())) {
	 appenderList.removeElementAt(i);
	 break;
      }
    }
}

Remove the appender with the name passed as parameter form the list of appenders.