I have created a DTD-based specialized topic type. All the declarations have been validated with a number of tools (Oxygen, Arbortext Editor, the Open Toolkit).
I have created a directory for the specialization in the addon directory. In there is a catalog file that contains this entry: <nextCatalog catalog="file:///c:/DITA-OT1.3.1/catalog-dita_template.xml"/> Which hooks into into my mail DITA catalog, which then points to the catalogs for my specialized DTDs. Using OxygenXML, I set this catalog as my only catalog and verified that my specialized topic instances are valid. So I'm sure that part of things is set up correctly. However, when I go to open a topic that uses my specialization I get this error: "unit.mod:, line 72, column 18: reference to undefined parameter entity "abstract" Abstract happens to be the first parameter entity referenced in the content model for my specialized topic element in "unit.mod". However, the parameter entity in question is declared in a DITA-provided module that is included by the shell DTD (unit.dtd). That is, the document is valid and the DTD is correctly structured, so there must be something else at work. The most likely failure is that XML Mind's resolver is preferring system IDs instead of system IDs when resolving entity references. This could account for the behavior (since I didn't create yet another copy of the DITA-provided declaration components, they are not in the relative locations indicated by the ENTITY declarations in my shell DTD). I didn't see anything in the documentation on XML catalogs on how to control things like preference of SYSTEM or PUBLIC IDs. It's also not clear what the interaction of different catalogs is, since all the add-ons appear to contribute catalogs (or do they?). This could be a big problem since it would be difficult to ensure that a given top-level shell uses the versions of the declarations it needs (e.g., DITA 1.0 vs DITA 1.1) without making local (and redundant) copies of the declarations. Thanks, E. -- W. Eliot Kimber Professional Services Innodata Isogen 8500 N. Mopac, Suite 402 Austin, TX 78759 (214) 954-5198 ekimber at innodata-isogen.com www.innodata-isogen.com
