[jbossseam-issues] [JBoss JIRA] Commented: (JBSEAM-633) remoting extension in handling exceptions on client side
Nico Gau (JIRA)
jira-events at jboss.com
Fri Jan 12 09:05:52 EST 2007
[ http://jira.jboss.com/jira/browse/JBSEAM-633?page=comments#action_12350674 ]
Nico Gau commented on JBSEAM-633:
---------------------------------
Hi,
I needed the exception stuff for handling self thrown exceptions. E.g. if you have a backend function
@WebRemote
void dummy() throws MyException1, MyException2
{
if(...)
throw new MyException1(...);
if(...)
throw new MyException2(...);
...
}
then you can throw Exceptions in there and these Exceptions are transmitted to the client which can handle it. Currently you need to have a return value which represents the error so you can handle it.
> remoting extension in handling exceptions on client side
> --------------------------------------------------------
>
> Key: JBSEAM-633
> URL: http://jira.jboss.com/jira/browse/JBSEAM-633
> Project: JBoss Seam
> Issue Type: Patch
> Components: Remoting
> Affects Versions: 1.1.0.GA
> Reporter: Nico Gau
> Assigned To: Shane Bryzak
> Priority: Optional
>
> Hi all,
> I don't really know what JIRA is by the way, so hopefully nobody is upset by this post. I first mailed Gavin but he told me I should put it in JIRA.
> I currently work on a project which uses Seam Remoting directly and I didn't find a neat way in handling errors on the client side as Exceptions are not propagated to it. Therefore I changed Seam to transmit all exceptions which can be handled in the javascript part via another callback. E.g.:
> Seam.Component.getInstance('userManager').currentUser(function(user) {
> alert("user: " + user);
> },
> function(ex) {
> alert("exception occured: " + ex.getMessage());
> });
> As the exception handler is optional, the change would not brake any client code. If you are interested in the change, you can reach me at heinzbeinz AT googlemail.com
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