29 Nov
2014
29 Nov
'14
10 a.m.
I misunderstood what you wanted. I thought you wanted to know what the {{velocity}} or
{{groovy}} macros would display. They automatically catch exceptions. Now it seems your
question is different and you wish to be able to catch exceptions in your own script.
XWiki offers a scripting API for all Java API (for example when you call $services.xxx).
It’s not the same API as the Java API. And our rule is in general to not throw Exceptions
but instead to return null when there are problems. The main reason was because of
Velocity indeed.
That said, we’ve recently introduced a way to catch exceptions in Velocity:
http://www.xwiki.org/xwiki/bin/view/ReleaseNotes/ReleaseNotesXWiki63#HAbili…
Hope it helps
-Vincent
On 28 Nov 2014 at 21:18:56, Bryn Jeffries
(bryn.jeffries@sydney.edu.au(mailto:bryn.jeffries@sydney.edu.au)) wrote:
Said Vincent:
OK, looks like Groovy has explicit try/catch
(http://groovy.codehaus.org/JN3035-Exceptions). I couldn't see anything about Velocity
catching exceptions (only about Velocity throwing exceptions -
http://velocity.apache.org/engine/devel/developer-guide.html#exceptions).
So if I have a component that I call from velocity with $mycomponent.foo() and the method
throws an exception (IOException, for instance), can I control what the Velocity script
does about this?
and can
this be caught within the Velocity or Groovy code that calls it?
errors are automatically caught in the script macros ({{velocity}}, {{groovy}}, etc).