Embed image from database, not from file

Markus Ruggiero <[email protected]>
Newsgroups gmane.text.xml.fop.user
Message-ID <[email protected]> 
Folks,

I have image data stored in a database, not as a file. It is JPEG data in Base64 encoding. My understanding is that with fo.external-graphic I can only use a proper file url for the image reference - but there is no file in my case. Is there any other way to embed image data in the PDF output? Can I somehow put the image data into the input xml data file and pull it from there?

Thanks for any help
---markus---
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