> I've got a XSL stylesheet which was preparsed by Xerces as part of the > initialization of my application. I need to be able to pass that DOM > tree to the transformer to run the transformation. > > So far I've been unable to figure out how to get it to work. What I > want is something like this: > > Xercesc_2_5::DOMElement *stylesheet; // This was parsed earlier by > Xerces duing my program initialization > Xercesc_2_5::DOMDocument *sourceDoc; // The DOM document I want to > transform > Xercesc_2_5::DOMDocument *outputDoc; // The DOM document I want the > results placed in. > > XalanTransformer transformer; > > // transform the sourceDoc. In reality if I can only get a string > back as the output of the transform, > // I'm not as concerned but I really need to pass the DOMDocument > (or element) as the stylesheet. > Transformer.transform (sourceDoc, stylesheet, outputDoc); > > Is anything like this possible? Or do I have to convert my xerces-parsed > DOM tree back to a string and let Xalan re-parse it?
Yes, it's certainly possible. You need to wrap the Xerces-C stylesheet DOM tree in the same way you wrap the Xerces-C source DOM tree. Then, you can construct the stylesheet's XSLTInputSource with that wrapped tree. If your stylesheet has imports and/or includes, you should also set the system ID on the stylesheet XSLTInputSource so the parser can resolve any relative URI references correctly. There are two ways to do this. The first is to create an instance of XercesDOMWrapperParsedSource and use the getDocument() accessor function to get the underlying XalanDocument instance. Another way, which can be more efficient, is to create your own instances of XercesParserLiaison and XercesDOM support and do what the constructor of XercesDOMWrapperParsedSource does. That's better if you plan to do multiple transformations, because you can re-use the XercesParserLiaison and XercesDOM instances. For more information about using XercesDOMWrapperParsedSource, see the sample "ParsedSourceWrappers." You can also transform to an instance of the Xerces-C DOM provided your stylesheet produces a well-formed XML document. See the sample "TransformToXercesDOM" for more information. Dave
