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From "Hu, Zemin" <Zemin...@adp.com>
Subject RE: Create damaged PDF file
Date Fri, 22 Jan 2010 17:32:33 GMT
The template file is huge, it involves around 30 tables(many complicated tables), and the error
message does not indicate line numbers in the template (could this be improved so we can have
clue?), so it is very hard to guess which table is causing problem, also it may well not be
the cause of the problem since the file could be generated successfully next time using same
template and same data. Another guess I have is that the template and data are out of sync
at that moment for some reason-timing, cache, whatever, just wild imagination.

Thanks.

Zemin

From: Peter Hancock [mailto:peter.hancock@gmail.com]
Sent: Friday, January 22, 2010 12:15 PM
To: fop-users@xmlgraphics.apache.org
Subject: Re: Create damaged PDF file

Hi Zemin,

Are you able to extract a  snippet of the fo that is supposedly missing this child element?
 If you can show that the fo is indeed well formed it would support the argument that the
problem is in FOP.

Thanks,

Pete
On Fri, Jan 22, 2010 at 5:05 PM, Hu, Zemin <Zemin_Hu@adp.com<mailto:Zemin_Hu@adp.com>>
wrote:
I am new here and have a question.

I am creating PDF on the fly for a web application. A PDF file is supposed to open when user
clicks on a link. Occasionally the created PDF file cannot be opened and the error message
says: "File is damaged and could not be repaired".

When I read log file, I can find error message:
SystemErr     R (Location of error unknown)org.apache.fop.fo.ValidationException: Error(Unknown
location): fo:table-row is missing child elements. Required Content Model: (table-cell+)

The weird thing is that this error only happens at first time or first few times, then the
PDF file generation goes fine. Then if user browses other pages and comes back, this can happen
again. This error is not consistent, sometimes everything is just fine. This is really frustrating
and hard to debug.

This never happened in my unit test and local environment. So I am thinking it might be the
cache issue or web server configuration issue. But I have no clue. This is tough one.

Any suggestions or solutions?

Thanks.

Zemin

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