[news.eclipse.modeling.m2m] QVT XSD

[min.kong@xxxxxxxxxxxxxxxxx (Min)]

Hi,

1. QVT -

Executing the following .qvto :

   modeltype INTEROP uses "http://ms.com/interop";;
   modeltype XSD uses "http://www.eclipse.org/xsd/2002/XSD";;

   transformation interop2xsd(in interop: INTEROP , out XSD);
	
   main(in interopModel: INTEROP::InteropSchema, out xsd: XSD::XSDSchema) 
{
	xsd:= interopModel.map interop2Xsd();
   }

   mapping INTEROP::InteropSchema::interop2Xsd() : XSD::XSDSchema {
	targetNamespace := 'DUMMY';
   }

with OUT target file specifies as <something>.xsd, produces:

   <?xml version="1.0" encoding="UTF-8"?>
   <schema targetNamespace="DUMMY"/>

which does not look like a valid xsd schema root element.

2. Java- 

On the other hand, running the following Java code:

   class Schema {

	private XSDFactory _xsdFactory;
	private XSDSchema _schema;
	private ByteArrayOutputStream _outputStream = new ByteArrayOutputStream();
	
	private Schema() {
		_xsdFactory = XSDFactory.eINSTANCE;
		initSchema();	
	}
	private void initSchema() {
		_schema = _xsdFactory.createXSDSchema();
		_schema.setTargetNamespace("DUMMY");
		
		_schema.setSchemaForSchemaQNamePrefix("xsd");
		Map<String, String> qNamePrefixToNamespaceMap 
=_schema.getQNamePrefixToNamespaceMap();
   	qNamePrefixToNamespaceMap.put("tns", _schema.getTargetNamespace());
   
	qNamePrefixToNamespaceMap.put(_schema.getSchemaForSchemaQNamePrefix(), 
XSDConstants.SCHEMA_FOR_SCHEMA_URI_2001);
   	
   		_schema.updateElement();
 		
	}
	private String serialize() {
		XSDResourceImpl.serialize(_outputStream, _schema.getDocument());
		return _outputStream.toString();
	}
	
	public static void main(String [ ] args) {
		Schema schema = new Schema();
		System.out.println(schema.serialize());
	}
   }

produces, in stdout:

  <?xml version="1.0" encoding="UTF-8"?>
  <xsd:schema xmlns:tns="DUMMY" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema";  targetNamespace="DUMMY"/>

which looks like a valid xsd schema document root.


3. Question: how would one achieve the equivalence of 2. above,
with a QVT transform? I.e., how would one re-write the .qvto in 1. to get 
the output produced in 2. ?


Thanks.

-Min