Handling invalid album feeds

[Luciano Resende <lu...@gmail.com>]

On Fri, Apr 10, 2009 at 3:40 AM, Angela Cymbalak <a....@nechtan.org> wrote:
>
>> >> Can you remind me again about the issue that you are having ?
>> >
>> > If you do not have an Internet connection then the feeds throws an
>> > exception.
>> >
>>
>> Ok, I can't promise anything for this week, but I can try taking a look at
>> this.
>
> Do you know where there is good documentation on the error handling for
> annotations?  I can handle the exception but I haven't been able to find
> good documentation on how error handling with annotations works.
>

I can't understand the annotation thing here, but for the case you mentioned.
Here is what I think it' s happening :

- We try to process the album references in AlbumImpl
- SCA runtime can't find the feed service, and throw an exception

I quickly reproduced this by modifying one of the feed uri in the
photo-gallery.composite and it seems that we can treat this issue by
surrounding the code that process each album with a try/catch like :

if (albumFeed != null) {
 try {
   for(org.apache.abdera.model.Entry feedPicture :
albumFeed.getFeed().getEntries()) {
     String feedImageLink =
feedPicture.getEnclosureLinkResolvedHref().toString();
     pictures.add(feedImageLink);
    }
  }catch (Exception e) {
     //log exception, warn user that album xxx was not processed (not found)
  }
}



Please let me know if this is the same issue you were seeing, and if
this solve your problem... I';; commit these changes in a few minutes


-- 
Luciano Resende
Apache Tuscany, Apache PhotArk
http://people.apache.org/~lresende
http://lresende.blogspot.com/

Re: Handling invalid album feeds

[Angela Cymbalak <a....@nechtan.org>]

I'll check this out.  I was thinking annotations needed a different 
type of try/catch statement that I was unaware of because when I 
tried what you have below, I keep getting compile time issues.

Angie

At 05:37 PM 4/10/2009, you wrote:
>On Fri, Apr 10, 2009 at 3:40 AM, Angela Cymbalak 
><a....@nechtan.org> wrote:
> >
> >> >> Can you remind me again about the issue that you are having ?
> >> >
> >> > If you do not have an Internet connection then the feeds throws an
> >> > exception.
> >> >
> >>
> >> Ok, I can't promise anything for this week, but I can try taking a look at
> >> this.
> >
> > Do you know where there is good documentation on the error handling for
> > annotations?  I can handle the exception but I haven't been able to find
> > good documentation on how error handling with annotations works.
> >
>
>I can't understand the annotation thing here, but for the case you mentioned.
>Here is what I think it' s happening :
>
>- We try to process the album references in AlbumImpl
>- SCA runtime can't find the feed service, and throw an exception
>
>I quickly reproduced this by modifying one of the feed uri in the
>photo-gallery.composite and it seems that we can treat this issue by
>surrounding the code that process each album with a try/catch like :
>
>if (albumFeed != null) {
>  try {
>    for(org.apache.abdera.model.Entry feedPicture :
>albumFeed.getFeed().getEntries()) {
>      String feedImageLink =
>feedPicture.getEnclosureLinkResolvedHref().toString();
>      pictures.add(feedImageLink);
>     }
>   }catch (Exception e) {
>      //log exception, warn user that album xxx was not processed (not found)
>   }
>}
>
>
>
>Please let me know if this is the same issue you were seeing, and if
>this solve your problem... I';; commit these changes in a few minutes
>
>
>--
>Luciano Resende
>Apache Tuscany, Apache PhotArk
>http://people.apache.org/~lresende
>http://lresende.blogspot.com/