Re: Tapestry and PDF

Yes, this is a good idea, thanks. I guess I am still thinking mostly in 
WebObjects terms, so I overlooked this quiet obvious solution. This 
produced much cleaner code!!

Andrus



At 09:10 AM 1/29/2003 +0000, Simon Robins wrote:
>Would a service be better for this sort of thing?
>
>I have a application which requires an invoice to be displayed, using a 
>service I use iText to return a PDF document or a HTML document.
>
>Simon
>
>On Wednesday, January 29, 2003, at 04:15  am, Andrus wrote:
>
>>At 09:26 PM 1/28/2003 -0500, Andrus wrote:
>>>I was wondering if anyone used Tapestry with PDF generation frameworks? 
>>>SourceForge mailing lists are really "searchable", so I can't tell if 
>>>this was discussed in the past.
>>>
>>>Anyway, just checking what potential problems I might have.
>>>
>>>PDF generation is a part of a bigger Cayenne/Tapestry application. We 
>>>are using iText as PDF generation framework. It seems to be more solid 
>>>than things like FOP.
>>>
>>>Tapestry PDF pages override "beginResponse" to set the right HTTP 
>>>headers and push the PDF content directly to HttpServletResponse. 
>>>Unfortunately this brings Tapestry down to simple servlet API. And using 
>>>iText XML options (with XML generated by Tapestry, and then fed to PDF 
>>>generator) seem like big performance overhead. Anyone has any experience 
>>>with such setup?
>>
>>
>>I figured I'd still try the XML thing... As expected, only the XML -> PDF 
>>part now takes twice as much time as before (without XML), and I haven't 
>>included the actual XML rendering in the timing. Also it has to be 
>>double-buffered now (one bugger for XML, another for PDF to set 
>>"Content-Length" correctly), so I expect memory issues.
>>
>>Now I need to make a decision whether the component-based design this 
>>gives me is worth the trouble. On the positive side, I wrote a cool 
>>PDFMarkupWriter, working with nested XML writer :-).
>>
>>Andrus



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