Description:
------------
When I read XML (via the XML DAS) that validates against an XSD with a GED
with a complex type and then write it out again (via the XML DAS) the output
matches the input, for example,

IN XSD:
<schema xmlns="..."
 <complexType name="ComplexTypeContentType">
   <sequence>
     <element name="SimpleTypeWithName" type="string"/>
   </sequence>
 </complexType>
 <element name="RootElement7" type="tns:ComplexTypeContentType"/>
</schema>

IN XML:
<tns:RootElement7 xmlns:tns="...">
   <SimpleTypeWithName>SimpleTypeWithName</SimpleTypeWithName>
</tns:RootElement7>

OUT XML:
<RootElement7 xmlns="...">
   <SimpleTypeWithName>SimpleTypeWithName</SimpleTypeWithName>
</RootElement7>


So all is well. When I repeat this execise with a GED with a simple type
rather than a complex type then the output doesn't match the input.

IN XSD:
<schema xmlns="...">
 <simpleType name="SimpleTypeWithNameType">
   <restriction base="string"/>
 </simpleType>
 <element name="RootElement6" type="tns:SimpleTypeWithNameType"/>
</schema>

IN XML:
<tns:RootElement6 xmlns:tns="... ">
   tns:RootElement1
</tns:RootElement6>

OUT XML:
<RootElement6 xmlns="...">
   <RootElement6>tns:RootElement1</RootElement6>
</RootElement6>

SDO has problems problems working out how to hold onto the value of the simple type at the top level of the data object tree because, with a
simple type, there is no data object to holds the property that is the simple type.

GEDs of simple type don't occur that often in the real world but it is a likely candidate for the first simple test of a new user. Hence it gives a bad impression if it doesn't work as expected. 

This bug is has duplicate posting as Tuscany JIRA488 (http://issues.apache.org/jira/browse/TUSCANY-488) as both code bases exhibit the same problem 

Reproduce code:
---------------
IN XSD:
<schema xmlns="...">
 <simpleType name="SimpleTypeWithNameType">
   <restriction base="string"/>
 </simpleType>
 <element name="RootElement6" type="tns:SimpleTypeWithNameType"/>
</schema>

IN XML:
<tns:RootElement6 xmlns:tns="... ">
   tns:RootElement1
</tns:RootElement6>

Expected result:
----------------
OUT XML:
<RootElement6 xmlns="...">
   RootElement1
</RootElement6>

Actual result:
--------------
OUT XML:
<RootElement6 xmlns="...">
   <RootElement6>tns:RootElement1</RootElement6>
</RootElement6>