Question about setting an element's value

[Chris Mildebrandt]

Hi,

I have the following schema:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:ext="urn:Extension"
  xmlns:xs="http://www.w3.org/2001/XMLSchema";
  targetNamespace="urn:Extension"
  elementFormDefault="unqualified" attributeFormDefault="unqualified"
version="1.0">
  <xs:element name="Extension">
     <xs:complexType>
        <xs:sequence>
           <xs:element ref="ext:SubCategory" minOccurs="0"
maxOccurs="unbounded" />
        </xs:sequence>
     </xs:complexType>
  </xs:element>

  <xs:element name="SubCategory">
     <xs:complexType>
        <xs:simpleContent>
           <xs:extension base="xs:string">
              <xs:attribute name="displayable" type="xs:boolean"
use="optional" />
           </xs:extension>
        </xs:simpleContent>
     </xs:complexType>
  </xs:element>
</xs:schema>


And I'd like to create this xml:

<?xml version="1.0" encoding="ASCII"?>
<ext:Extension xmlns:ext="urn:Extension">
 <ext:SubCategory displayable="true">myCategory</SubCategory>
</ext:Extension>


I'm having problems setting the value "myCategory". In examples I've
seen where the element does not contain an attribute, a simple
set("SubCategory", "myCategory") would work. It seems that I can't use
that in this case. Here's my current code:

       HelperContext context = SDOUtil.createHelperContext();

       InputStream in = new File("Extension.xsd").toURL().openStream();
       context.getXSDHelper().define(in, null);

       DataObject extension =
context.getDataFactory().create("urn:Extension", "Extension");

       DataObject subCategory = extension.createDataObject("SubCategory");
       subCategory.setBoolean("displayable", true);

       extension.set("SubCategory", "myCategory");

       context.getXMLHelper().save(extension, "urn:Extension",
"Extension", System.out);


When the set() method is called, i get the following exception:

Exception in thread "main" java.lang.ClassCastException: java.lang.String
        at org.eclipse.emf.ecore.util.EcoreEList.set(EcoreEList.java:448)
        at 
org.eclipse.emf.ecore.impl.EStructuralFeatureImpl$InternalSettingDelegateMany.dynamicSet(EStructuralFeatureImpl.java:1647)
        at 
org.eclipse.emf.ecore.impl.BasicEObjectImpl.eDynamicSet(BasicEObjectImpl.java:709)
        at 
org.apache.tuscany.sdo.impl.DynamicDataObjectImpl.eDynamicSet(DynamicDataObjectImpl.java:159)
        at 
org.apache.tuscany.sdo.impl.DataObjectImpl.eSet(DataObjectImpl.java:1459)
        at 
org.eclipse.emf.ecore.impl.BasicEObjectImpl.eSet(BasicEObjectImpl.java:654)
        at 
org.apache.tuscany.sdo.impl.DataObjectImpl.set(DataObjectImpl.java:142)
        at 
org.apache.tuscany.sdo.util.DataObjectUtil.set(DataObjectUtil.java:730)
        at 
org.apache.tuscany.sdo.impl.DataObjectImpl.set(DataObjectImpl.java:225)
        at Test.valueTest(Test.java:186)
        at Test.main(Test.java:197)


I've tried looking through the samples and test cases, but couldn't
find a similar example. Any help in pointing me to the correct API
would be appreciated.

Thanks,
-Chris

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