FacesContext facesContext = FacesContext.getCurrentInstance();
Application application = facesContext.getApplication();
UIComponent component = actionEvent.getComponent();
MethodExpression methodExpression = null;
MethodBinding methodBinding = null;
String fromAction = null;
String outcome = null;
if (component instanceof ActionSource2)
{
// Must be an instance of ActionSource2, so don't look on action if the actionExpression is set
methodExpression = ((ActionSource2) component).getActionExpression();
}
if (methodExpression == null && component instanceof ActionSource)
{
// Backwards compatibility for pre-1.2.
methodBinding = ((ActionSource) component).getAction();
}
if (methodExpression != null)
{
fromAction = methodExpression.getExpressionString();
try
{
Object objOutcome = methodExpression.invoke(facesContext.getELContext(), null);
if (objOutcome != null)
{
outcome = objOutcome.toString();
}
}
catch (ELException e)
{
// "... If that fails for any reason, throw an AbortProcessingException,
// including the cause of the failure ..."
// -= Leonardo Uribe =- after discussing this topic on MYFACES-3199,
// the conclusion is the part is an advice
// for the developer implementing a listener in a method expressions
// that could be wrapped by this class.
// The spec wording is poor but, to keep this coherently with
// ExceptionHandler API, the spec and code on UIViewRoot we need:
// 2a) "exception is instance of APE or any of the causes of
// the exception are an APE,
// DON'T publish ExceptionQueuedEvent and terminate processing for current event".
// 2b) for any other exception publish ExceptionQueuedEvent and continue broadcast processing.
Throwable cause = e.getCause();
AbortProcessingException ape = null;
if (cause != null)
{
do
{
if (cause != null && cause instanceof AbortProcessingException)
{
ape = (AbortProcessingException) cause;
break;
}
cause = cause.getCause();
}
while (cause != null);
}
if (ape != null)
{
// 2a) "exception is instance of APE or any of the causes of the exception are an APE,
// DON'T publish ExceptionQueuedEvent and terminate processing for current event".
// To do this throw an AbortProcessingException here, later on UIViewRoot.broadcastAll,
// this exception will be received and stored to handle later.
throw ape;
}
// Since this ActionListener is the one who handles navigation, if we have another different exception
// here we can't queue it on ExceptionHandler stack, instead throw it as a FacesException.
throw new FacesException("Error calling action method of component with id "
+ actionEvent.getComponent().getClientId(facesContext), e);
}
catch (RuntimeException e)
{
throw new FacesException("Error calling action method of component with id "
+ actionEvent.getComponent().getClientId(facesContext), e);
}
}
else if (methodBinding != null)
{
fromAction = methodBinding.getExpressionString();
try
{
Object objOutcome = methodBinding.invoke(facesContext, null);
if (objOutcome != null)
{
outcome = objOutcome.toString();
}