Re: how to retrieve psvi information from a parser

[Alberto Massari]

At 10.37 09/12/2004 -0500, Lin Guo wrote:
In xerces-java, it is as simple as:
----------------------------------------------------------------------
dbf.setNamespaceAware(true);
dbf.setValidating(true);
dbf.setAttribute("http://apache.org/xml/features/validation/schema";,
    Boolean.TRUE);
dbf.setAttribute("http://apache.org/xml/properties/dom/document-class-name";,
   "org.apache.xerces.dom.PSVIDocumentImpl");
Document doc = db.parse("person.xml");
Element documentElement = doc.getDocumentElement() ;
if (documentElement.isSupported("psvi", "1.0")){
    ElementPSVI psviElem = (ElementPSVI)doc.getDocumentElement();
    XSModel model = psviElement.getSchemaInformation();
    XSElementDeclaration decl = psviElem.getElementDeclaration();
----------------------------------------------------------------------------------------
And in xerces-c, how can I do this to get an XSModel object(ptr)?
In Xerces 2.6 you have two choices:
1) plug in your PSVIHandler object using setPSVIHandler(), and process the 
handleElementPSVI/handleAttributesPSVI callbacks
2) call setFeature(XMLUni::fgXercesDOMHasPSVIInfo) on the parser; in the 
generated DOM tree you can do

  DOMPSVITypeInfo* 
psviType=(DOMPSVITypeInfo*)elem->getInterface(XMLUni::fgXercescInterfacePSVITypeInfo);
  if(psviType)
  {
    PSVIItem::VALIDITY_STATE 
state=psviType->getNumericProperty(DOMPSVITypeInfo::PSVI_Validity);
    bool isNil=(psviType->getNumericProperty(DOMPSVITypeInfo::PSVI_Nil)!=0);
    const XMLCh* 
typeNS=psviType->getStringProperty(DOMPSVITypeInfo::PSVI_Type_Definition_Namespace);
    const XMLCh* 
typeName=psviType->getStringProperty(DOMPSVITypeInfo::PSVI_Type_Definition_Name);
    const XMLCh* 
memberTypeNS=psviType->getStringProperty(DOMPSVITypeInfo::PSVI_Member_Type_Definition_Namespace);
    const XMLCh* 
memberTypeName=psviType->getStringProperty(DOMPSVITypeInfo::PSVI_Member_Type_Definition_Name);
  }

Similarly for attributes (minus the isNil property).
Hope this helps,
Alberto 


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