protected boolean matches(ITraceEvent a, ITraceEvent b) {
		if (a==null || b==null)
			return false;
		
		if (a.getEventType()==b.getEventType()
				&& a.getClassName().equals(b.getClassName())
				&& a.getMethodName().equals(b.getMethodName())
				) {
					return true;
				}
			return false;
		
	}