AbstractElementHandler.java 文件源码

/** Evaluates the attributes and creates a Context instance.
  * If the creation of the Context instance fails the ElementHandler
  * is marked as failed which may affect the parent handler other.
  *
  * @param attributes Attributes of the XML tag.
  */
 public final void start(Attributes attributes,
                         ExceptionListener exceptionListener)
 {
   try
     {
// lets the subclass create the appropriate Context instance
context = startElement(attributes, exceptionListener);
     }
   catch (AssemblyException pe)
     {
Throwable t = pe.getCause();

if (t instanceof Exception)
  exceptionListener.exceptionThrown((Exception) t);
else
  throw new InternalError("Unexpected Throwable type in AssemblerException. Please file a bug report.");

notifyContextFailed();

return;
     }
 }