Hi Michael, Thanks for your reply. I'll try your code shortly. I am working to construct a Schema (javax.xml.validation.Schema) object for Psychopath interface. As of now, it seems I would need both Schema and XSModel (but it seems I may not need, javax.xml.validation.Schema finally.. please see what I feel, below).
I have observed that following works fine with Psychopath to enable schema awareness: public static final String DOCUMENT_IMPLEMENTATION_PROPERTY = "http://apache.org/xml/properties/dom/document-class-name";; public static final String DOCUMENT_PSVI_IMPLEMENTATION = "org.apache.xerces.dom.PSVIDocumentImpl"; DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); factory.setAttribute(DOCUMENT_IMPLEMENTATION_PROPERTY, DOCUMENT_PSVI_IMPLEMENTATION); factory.setSchema(_schema); // _schema is the Schema object DocumentBuilder builder = factory.newDocumentBuilder(); Document document = builder.parse(in); // 'in' is InputStream for the source XML When Psychopath works with the DOM tree 'document' it is able to perform schema aware XPath evaluations. Now further, we get XSModel as well. Psychopath needs XSModel to construct the dynmaic context as below. DefaultDynamicContext(XSModel xsmodel, Document doc); I observed that only having XSModel doesn't work well with Psychopath. What I would try now is: Construct the PSVI DOM from scratch (using say, createElement calls. this would be a substitute of builder.parse(in)) and then supply that along with XSModel to Psychopath. I have to see if this would work. If this works, then we don't need JAXP Schema object. The thing I would like to see working with much eagerness is constructing XSModel from a sequence of endElement calls (where I pass, ElementPSVI). I think constructing XSModel may not be as tendious as I think, because I just need to construct XSModel from only *one* endElement event (which is for the root node of the DOM tree). I am thinking to use the constructor: XSModelImpl(SchemaGrammar[] grammars) and construct the object, SchemaGrammar using number of addxxx calls (like, addGlobalElementDecl). Let's see how it goes. I'll share what I might achieve here. On Mon, May 18, 2009 at 12:16 PM, Michael Glavassevich <[email protected]> wrote: > Hi Mukul, > > What you're attempting to do is already possible: > > SchemaFactory sf = > SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI); > XMLSchemaFactory xsf = (XMLSchemaFactory) sf; > > XSModel xsmodel = ...; > XSNamespaceItemList nsItemList = model.getNamespaceItems(); > Grammar[] grammars = (Grammar[]) > nsItemList.toArray(new Grammar[nsItemList.getLength()]); > XMLGrammarPool pool = new XMLGrammarPoolImpl(); > pool.cacheGrammars(XMLGrammarDescription.XML_SCHEMA, grammars); > Schema s = xsf.newSchema(pool); > > though I thought that Psychopath took XSModel as input. Or is this necessary > for something else? Saxon perhaps? > > Thanks. > > Michael Glavassevich > XML Parser Development > IBM Toronto Lab > E-mail: [email protected] > E-mail: [email protected] -- Regards, Mukul Gandhi --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
