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http://issues.apache.org/bugzilla/show_bug.cgi?id=38452

           Summary: Generating one Pdf document from several xml sources.
           Product: Fop
           Version: 0.91
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P3
         Component: page-master/layout
        AssignedTo: [email protected]
        ReportedBy: [EMAIL PROTECTED]


Now it is a problem to generate a big pdf document with many data. For example,
report based on a lot of different data. Usually "OutOfMemory" exception 
throws. 

My idea to generate pdf step by step,to create a lot of xml sources and one or
more xslfo source files. At first it is necessary to point FOP-builder that
specific transformation has been started and send the first xml,xslfo source and
pdf target to process. After the first transformation, send the next xml sources
to process and so on. When the last xml source remains, it needs to indicate
that it will be the last process. And Fop will complete generating pdf.

I released this logic in fop-0.20.5. I used old classes: Driver, FoTreeBuilder,
StreamRenderer. But some of this clasess have been changed or absented in new
version of Fop. Have you opportunity to realize generating only one pdf-document
based on a plenty of data?

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