Unable to generate PDF file from EJB using FOP

[Amit Rangari <ra...@ascent-inc.com>]

I have written a simple class which takes XML and XSL and translate it
into PDF using FOP (this works fine when run it as a standalone
application) but when I embed this program/logic in a stateless EJB it
doesn't render the content to the output stream. 

I have checked out the class path also, I am using the same setEnv.bat
file to set the environment for running both standalone program as well
as weblogic application server.

Please help me 

Thanks
Amit

-----Original Message-----
From: RamanaJV [mailto:ramanajv@esntechnologies.co.in] 
Sent: Tuesday, July 09, 2002 9:39 AM
To: fop-dev@xml.apache.org
Subject: RE: Page details support?

I understand that messing around with FOP is not a good idea. But what
to
do, I doesn't get any solution till. I'll put the problem in greater
detail
again.

   I will be having FO templates, that specify the style of the report. 
		Let's say the template is like:

			<?xml version="1.0" encoding="utf-8"?>
			  <fo:root
xmlns:fo="http://www.w3.org/1999/XSL/Format>
				<!-- defines the layout master -->
				   <fo:layout-master-set>
			                  <fo:simple-page-master
master-name="first"
					page-height="11in"
				            page-width="8.5in"
					margin-top="25pt"
					margin-bottom="25pt"
					margin-left="20pt"
					margin-right="10pt">
				   <fo:region-body margin-top="50pt">
				  <fo:region-before extent="50pt">
				 <fo:region-after extent="25pt">
			         </fo:simple-page-master>
			      </fo:layout-master-set>

			   <!-- starts actual layout -->
			   <fo:page-sequence master-reference="first">
				<fo:static-content
flow-name="xsl-region-before">
				   <!-- Static content goes here -->
				</fo:static-content>
				<fo:flow flow-name="xsl-region-body">
				<fo:block white-space-collapse="false"
space-after="12pt">
				   <fo:inline
font-weight="bold">##########</fo:inline>" +
				</fo:block>
				</fo:flow>
			  </fo:page-sequence>
			</fo:root>


	There will be templates like above where the hashpart(#######)
is
the hole area where the programs fill the data. The data will be got
from
the database and the client program supplies the server with the data
and
the sever program takes the data and for every write call the client
program
says, the server creates a new "fo:block" element and places the data
supplied in the hash portion. The client proceeds in this fashion. 
           The client program may supply large amount of records, can be
around 15,000 records also. So, it is not advisable to make the user
wait
till all the data is supplied and the entire FO constructed. There is an
assumption made now, say we can show 40 records per page. The client
supplies 40 records to the sever, which renders the page using FOP API.
But,
the problem comes if the data supplied will not fit in the single line.
If
the data spans more than 1 line, then the assumption becomes incorrect
and
the remnant portion of the data ( a small chunk, could be one or two
lines)
comes in the second page. This is not good. 
	There actually will be number of templates and client filling
out
the templates. So, I'm trying to find a solution where in which at any
point
of time client should be able to know that
		 "Still how many lines of display remain?". With that
the
client can hold until the server gives it a ready signal again.

	I hope I'm clear now... I'm not finding how to solve the above
problem... I think this type of viewing is common in business
applications...
            For now, it is assumed that the page size is 8.5in * 11in
and
portrait mode. Is it possible?

	I'll be waiting to hear for a solution...

-----Original Message-----
From: Jeremias Maerki [mailto:jeremias.maerki@outline.ch]
Sent: Monday, July 08, 2002 8:54 PM
To: fop-dev@xml.apache.org
Subject: Re: Page details support?


The font classes could help you here, too. But I wonder if that helps
you a lot. Questions like that often indicate that someone is trying to
work around a problem that is actually supposed to be worked out in a
different way. If you experience a deficiency with FOP, first try to
find out, if it's XSL:FO that doesn't provide what you need or if it's
FOP. If it's FOP, tell us what you want to accomplish. We may (!) be
able to help you find another solution that doesn't involve messing
around with FOP. And if you really decide to hack into FOP, be aware
that your solution will lose portability because you're restricting
yourself to a particular software and that may be as bad as buying
proprietary software. :-) I hope this helps.

> 	Is it possible to through FOP API to find the number of lines (
for
> a defined font and page) that can be rendered?

Cheers,
Jeremias Märki


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