On Jul 20, 2011, at 1:45 PM, Andreas L. Delmelle wrote:
>
> On 20 Jul 2011, at 19:02, Lance Goforth wrote:
>
> Hi Lance
>
>> I've seen this message on the groups and online discussed - but never any
>> answers.
>
> Indeed, and from the looks of it, it is already occurring since 2002
> (references to FOP 0.1x?)...
> There are no answers, probably because no one ever succeeded in nailing down
> the set of parameters to reliably reproduce it, and allow us to trace it down
> further.
>
> Let's see if we can get there.
>
> What FOP version are you on exactly?
>
Currently I'm using Fop 1.0
>> I have an embedded system, that generates fo and pdf output from xsl. It
>> opens the output first in the AWT renderer window. I'd say 90-95% of the
>> time that is fine. But recently (and increasingly) it has started throwing
>> the 'No default font defined by OutputConverter' error.
>
> Interesting... If I read you correctly, you seem to mean that it was 'better'
> in the past. Do you know of any relevant variables that have changed over
> time? A Java/FOP upgrade, or some such?
>
The only thing I really can tell is system load - more users and in the
application for much longer times.
>> Normally the user just has to re-run the report. But these are
>> automatically generated for the user, and they have to go back in and find
>> the spot to recreate, so it's quite a pain for them.
>
> Is it correct to infer from 'automatically generated' that the process runs
> in a servlet container? If yes, do you know if the number of concurrently
> spawned sessions has increased by a significant amount (more users)?
>
> One thing is not entirely clear to me:
> Is the error thrown when rendering to PDF, AWT, or both intermittently?
>
I've only seen it rendering to AWT, but I may have missed it going to
PDF, that is used less often. The application is a swing app, not an online or
web app. So the fop generation, rendering, and display are all in one jvm for
each user. That one user will occasionally see the error. Fop is used for
many reports in the app, but the most common is for invoices in a POS app, they
are the ones that generate and open for display automatically after a
transaction is completed.
>
> Regards,
>
> Andreas
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