RE: Help validating XML against an XSD?
>> I seem to recall finding no reliable way to prevent it from following >> imports in dependent schemas in the past without registering my own >> resolver and playing some games, so my strategy has been to register >> the namespace -> entity mappings in various ways, rather than >> registering and loading schemas directly like your sample does. > > fgXercesLoadSchema won't prevent loading imported/included schemas that > are referenced from schemas that you explicitly load with the > loadGrammar() calls. Only schemas that are specified in the XML > documents. At least with imports, I suppose that in the absence of circular references, one could strip the import statements of their paths and preload in the order needed to resolve the imports, but that won't help with includes. Oh well. Thanks for the clarification, -- Scott - To unsubscribe, e-mail: c-dev-unsubscr...@xerces.apache.org For additional commands, e-mail: c-dev-h...@xerces.apache.org
Re: Help validating XML against an XSD?
Hi Scott, Scott Cantor writes: > I think I know the answer, but is the fgXercesLoadSchema feature new in 3.x? Yes, it is available since 3.0.0. > I seem to recall finding no reliable way to prevent it from following > imports in dependent schemas in the past without registering my own > resolver and playing some games, so my strategy has been to register > the namespace -> entity mappings in various ways, rather than > registering and loading schemas directly like your sample does. fgXercesLoadSchema won't prevent loading imported/included schemas that are referenced from schemas that you explicitly load with the loadGrammar() calls. Only schemas that are specified in the XML documents. Boris -- Boris Kolpackov, Code Synthesishttp://codesynthesis.com/~boris/blog Open-source XML data binding for C++ http://codesynthesis.com/products/xsd XML data binding for embedded systems http://codesynthesis.com/products/xsde Command line interface to C++ compiler http://codesynthesis.com/projects/cli - To unsubscribe, e-mail: c-dev-unsubscr...@xerces.apache.org For additional commands, e-mail: c-dev-h...@xerces.apache.org
Re: Help validating XML against an XSD?
Hi, Scott Cantor writes: > > Another simple way to achieve the same is setting the > > fgXercesSchemaExternalSchemaLocation and > > fgXercesSchemaExternalNoNameSpaceSchemaLocation parameters (or using > > setExternalSchemaLocation and setExternalNoNamespaceSchemaLocation > > methods if available). > > [...] > > But it's also important to note that naively using those options won't work > either, because (in what I've always considered a buggy "feature", though > it's probably to spec) those overrides only apply to the schema lookup > *within* the XML instance being validated, and NOT to any lookup of imported > schemas in the schemas you pull in. They only go one layer deep, in other > words. The other problem with this approach is that the resolution of the paths is relative to the document path unless they are absolute URI qualified with 'file://' or similar. > So a complete solution (in code) really has to register an EntityResolver > and fully hijack the whole mechanism in some brittle ways, unfortunately. If you are using a fairly-recent version of Xerces-C++ (i.e., 3.0.0 or later) then a much simpler and more robust solution is as described in the blog mentioned above. Boris -- Boris Kolpackov, Code Synthesishttp://codesynthesis.com/~boris/blog Open-source XML data binding for C++ http://codesynthesis.com/products/xsd XML data binding for embedded systems http://codesynthesis.com/products/xsde Command line interface to C++ compiler http://codesynthesis.com/projects/cli - To unsubscribe, e-mail: c-dev-unsubscr...@xerces.apache.org For additional commands, e-mail: c-dev-h...@xerces.apache.org
RE: Help validating XML against an XSD?
> Seeing that this is becoming sort of a FAQ (though without a good answer), > I have written a little post plus included a couple of examples that you > may find useful: > > http://www.codesynthesis.com/~boris/blog/2010/03/15/validating-external- > schemas-xerces-cxx/ I think I know the answer, but is the fgXercesLoadSchema feature new in 3.x? I seem to recall finding no reliable way to prevent it from following imports in dependent schemas in the past without registering my own resolver and playing some games, so my strategy has been to register the namespace -> entity mappings in various ways, rather than registering and loading schemas directly like your sample does. I suspect that still has to be done if compatibility with 2.x is required. -- Scott - To unsubscribe, e-mail: c-dev-unsubscr...@xerces.apache.org For additional commands, e-mail: c-dev-h...@xerces.apache.org
RE: Help validating XML against an XSD?
> Another simple way to achieve the same is setting the > fgXercesSchemaExternalSchemaLocation and > fgXercesSchemaExternalNoNameSpaceSchemaLocation parameters (or using > setExternalSchemaLocation and setExternalNoNamespaceSchemaLocation > methods if available). If you're writing code, yes, in contrast to just trying to use the utilities as written, because they don't expose options for those settings (not that they couldn't). But it's also important to note that naively using those options won't work either, because (in what I've always considered a buggy "feature", though it's probably to spec) those overrides only apply to the schema lookup *within* the XML instance being validated, and NOT to any lookup of imported schemas in the schemas you pull in. They only go one layer deep, in other words. So a complete solution (in code) really has to register an EntityResolver and fully hijack the whole mechanism in some brittle ways, unfortunately. -- Scott - To unsubscribe, e-mail: c-dev-unsubscr...@xerces.apache.org For additional commands, e-mail: c-dev-h...@xerces.apache.org
Re: Help validating XML against an XSD?
Boris Kolpackov wrote: Hi Timothy, Stone, Timothy M writes: Hm, I've given it some offort, but cannot seem to get it going. I have a .xsd and a .xml file, and I just want to test if the XML is compliant with the XSD. Seeing that this is becoming sort of a FAQ (though without a good answer), I have written a little post plus included a couple of examples that you may find useful: http://www.codesynthesis.com/~boris/blog/2010/03/15/validating-external-schemas-xerces-cxx/ Boris Another simple way to achieve the same is setting the fgXercesSchemaExternalSchemaLocation and fgXercesSchemaExternalNoNameSpaceSchemaLocation parameters (or using setExternalSchemaLocation and setExternalNoNamespaceSchemaLocation methods if available). Good luck! Vitaly - To unsubscribe, e-mail: c-dev-unsubscr...@xerces.apache.org For additional commands, e-mail: c-dev-h...@xerces.apache.org
Re: Help validating XML against an XSD?
Hi Timothy, Stone, Timothy M writes: > Hm, I've given it some offort, but cannot seem to get it going. I have a > .xsd and a .xml file, and I just want to test if the XML is compliant with > the XSD. Seeing that this is becoming sort of a FAQ (though without a good answer), I have written a little post plus included a couple of examples that you may find useful: http://www.codesynthesis.com/~boris/blog/2010/03/15/validating-external-schemas-xerces-cxx/ Boris -- Boris Kolpackov, Code Synthesishttp://codesynthesis.com/~boris/blog Open-source XML data binding for C++ http://codesynthesis.com/products/xsd XML data binding for embedded systems http://codesynthesis.com/products/xsde Command line interface to C++ compiler http://codesynthesis.com/projects/cli - To unsubscribe, e-mail: c-dev-unsubscr...@xerces.apache.org For additional commands, e-mail: c-dev-h...@xerces.apache.org
