On 5/08/14 4:20 am, Peter Dietz wrote: > Hi Patrick, > > DSpace has events for certain actions, but I don't believe there is > anything that you can chain ahead of a download, that will allow you to > alter the contents. I have built a cover-page generator for DSpace, that > is custom code that on-the-fly generates an altered version of the PDF. > This doesn't affect the Archival/stored version of the PDF, just the > Disseminated/downloaded version of the PDF that the end user receives. > The admin user gets the Archival version, when they're logged in. > > The place where we altered the code to make this happen was in XMLUI's > BitstreamReader, where we added some logic to determine if this object > was eligible for watermarking (i.e. is PDF?, is enabled for this > collection?, is user non-admin?). > You can read a wiki page about that at: > https://github.com/osulibraries/DSpace/wiki/Citation-Cover-Page > > For this feature to be considered more complete, it would be wise to > also clean it up so that all bitstream-serving endpoints (JSPUI, XMLUI, > OAI, REST, ...) also had the same logic. >
Peter, Thank you very much - this is exactly our use case, i.e. we would like to generate coversheets on the fly. (FWIW - I would think this feature is something that should be in DSpace core.) Thanks very much for writing it up and putting it on github - I'll setup a dev environment to look into this. With Thanks, Patrick Rynhart > ________________ > Peter Dietz > Longsight > www.longsight.com <http://www.longsight.com> > [email protected] > <mailto:[email protected]> > p: 740-599-5005 x809 > > > On Sun, Aug 3, 2014 at 8:30 PM, Patrick Rynhart > <[email protected] > <mailto:[email protected]>> wrote: > > We would like to add a watermark and/or annotations to PDFs that are > downloaded on the fly. As an example, any paper that you download from > the Physics Archive (arxiv.org <http://arxiv.org>) has some > annotations - e.g.: > > http://arxiv.org/pdf/1407.8441.pdf > > (In particular, note the download date and arXiv reference number > printed vertically in the left-hand margin.) > > I'd like to be able to do this using ghostscript etc., but first DSpace > would need to support some kind of prehook when an asset is downloaded > on demand. I had a look around the documentation but couldn't find > anything useful. > > (Note: This is not a question about the preview thumbnails that are > displayed in DSpace - but the actual underlying asset served up by > DSpace.) > > With Thanks, > > Patrick > > > > ------------------------------------------------------------------------------ > Infragistics Professional > Build stunning WinForms apps today! > Reboot your WinForms applications with our WinForms controls. > Build a bridge from your legacy apps to the future. > > http://pubads.g.doubleclick.net/gampad/clk?id=153845071&iu=/4140/ostg.clktrk > _______________________________________________ > DSpace-tech mailing list > [email protected] > <mailto:[email protected]> > https://lists.sourceforge.net/lists/listinfo/dspace-tech > List Etiquette: > https://wiki.duraspace.org/display/DSPACE/Mailing+List+Etiquette > > > > > ------------------------------------------------------------------------------ > Infragistics Professional > Build stunning WinForms apps today! > Reboot your WinForms applications with our WinForms controls. > Build a bridge from your legacy apps to the future. > http://pubads.g.doubleclick.net/gampad/clk?id=153845071&iu=/4140/ostg.clktrk > > > ------------------------------------------------------------------------------ Infragistics Professional Build stunning WinForms apps today! Reboot your WinForms applications with our WinForms controls. Build a bridge from your legacy apps to the future. http://pubads.g.doubleclick.net/gampad/clk?id=153845071&iu=/4140/ostg.clktrk _______________________________________________ DSpace-tech mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dspace-tech List Etiquette: https://wiki.duraspace.org/display/DSPACE/Mailing+List+Etiquette
