I understand understand your concerns concering avalon (and followed myself the thread you noticed in the last weeks).
But it would be great to have any possibility to "plug in" a own source resolving concept in FOP in any case! This could be Excalibur or anything else. Consider something like this (very rough): public interface FopImageResolver { URL resolve(String href) throws MalformedURLException; } And a extension to FopImageFactory: public static void setImageResolver(FopImageResolver resolver) { ... } public static FopImageResolver getImageResolver() { ... } This would allow to "plug in" every image resolving concept that is needed for 3rdpary application integration including avalong-based cocoon from now, whatever-based cocoon in the future and others. And only some additional lines of code in the Fop sourcebase - without dependencies to any "non-base" tool. If you follow some user mailing lists like cocoon and forrest there are dozens of examples of problems with embedded images in PDFs, because fop uses internal a complete different resolving concept than cocoon. This could be solved very easy, i think. Stefan > -----Original Message----- > From: Glen Mazza [mailto:[EMAIL PROTECTED] > Sent: Friday, April 30, 2004 9:45 AM > To: [EMAIL PROTECTED] > Subject: Re: [Patch Proposal] Integrate FOP with > Cocoon/Excalibur Source > Resolving > > > I don't think so. For one, the 0.20.x branch is basically > frozen. But > more fundamentally, we're moved away from Avalon in 1.0. Like Xalan, > Batik, AntennaHouse and RenderX, we're a base tool--we shouldn't be > sitting on frameworks which would then require other users of FOP to > import that framework as well. > > Cocoon is also moving away from Avalon. I refer you to the > "building on > stone" thread: > http://marc.theaimsgroup.com/?t=108004833700001&r=1&w=2 > > The problem here appears not to be FOP's "lack of property Excalibur > source resolving support"--of course, gazillions of PDF > documents that > have been printed without that feature, not just by FOP but by the > commercial implementations--but rather, that you're working with a > framework that can not interface with a base Java tool, a > framework that > requires FOP to be rewritten in order to work with it. So it would > appear to be better for you to keep wrapping and modifying > FOP to suit > your needs. It is not like there are that many releases of > FOP anyway. > > Glen > > > Stefan Seifert schrieb: > > >Recently we integrated for our project Cocoon 2.1.4 with DAY > Communqiué 3.5.4 (a CMS) and use it together with FOP 0.20.5 > for PDF generation. > > > >The problem with the existing FOP integration in cocoon is > the lack of properly Excalibur source resolving support. > Without this (excellent) feature it is not possible to embed > images in PDFs from custom source implementations (i.e. a > communiqué contentbus source implementation in our case). For > some reasons it was not possible for us to use the common > workaround and include the images via a HTTP request. > > > >To solve this problem we patched the FOP Sources (Class > FopImageFactory) and implemented in a simple way a support > for Excalibur Source Resolving in Cocoon (extended file > attached, added sections are clearly marked with comments). > >Because of the existing FOP 0.20.5 implementation we have to > use some static methods to initialize FOP with the current > source resolver from cocoon (this is the only drawback of the > solution). The implementation checks first to resolve a image > URL with the source resolver, and has a fallback to the > default fop implementation if this fails. > > > >To initialize FOP with the current cocoon source resolver it > is possible to write a simple cocoon action and add it to the > pdf generation pipeline (sample attached - 2nd file). > > > >Through not tested in all details yet this solutions works > very well for us (and should offer a better performance than > the workaround with the http requests). > > > >I cross-post this message to fop-dev and cocoon-dev. > >To the FOP developers: Any chance to integrate Excalibur > Source Resolving support in the main FOP codebase? > > > >If this would be the case we could patch the cocoon pdf > serializer too to hand over the source resolver and get lack > of the additional action. > > > >Stefan > > > > > > > > >