RE: ClassCastException when parsing using SchemaTypeLoader

[Radu Preotiuc-Pietro]

Heikki,
You seem to have a good understanding of the issue. The problem here is
that XmlBeans tries to load the Java classes from the same classloader
as the Schema types, so if you load the Schema types without a
classloader, then the Java types cannot be loaded, so you get basically
XmlObject with runtime type "D=topLevel".
 
Try replacing
stl = XmlBeans.typeLoaderUnion ( new SchemaTypeLoader [ ] {
XmlBeans.getBuiltinTypeSystem (  ), stl } ) ;

 
with
stl = XmlBeans.typeLoaderUnion( new SchemaTypeLoader [] {
TopLevelElementDocumentPostFix.type.getTypeSystem(),
XmlBeans.getContextTypeLoader()} ) ;
 
Radu
________________________________

From: Heikki Doeleman [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, November 15, 2006 2:49 AM
To: user@xmlbeans.apache.org
Subject: ClassCastException when parsing using SchemaTypeLoader



Hi there,

I have 2 jars generated with scomp. In one of them, all the class names
are postfixed to avoid clashing with class names from the other one
(because their respective schemas have the same names for top level
elements, and no namespace). 

Now, trying to parse in the usual way leads to a ClassCastException, as
is described in earlier threads in this newsgroup :

TopLevelElementDocumentPostFix toplevel = TopLevelElementDocumentPostFix
.Factory.parse ( xml ); 


OK, so to avoid this exception I tried using a SchemaTypeLoader telling
it which jar to use, as follows :

           File[ ] schemaPath = { new File (
"the-path-to-the-jar/xmltypes-postfixed.jar" ) } ; 
            
            SchemaTypeLoader stl = XmlBeans.typeLoaderForResource (
XmlBeans.resourceLoaderForPath ( schemaPath ) ) ;
            stl = XmlBeans.typeLoaderUnion ( new SchemaTypeLoader [ ] {
XmlBeans.getBuiltinTypeSystem (  ), stl } ) ;

            System.out.println (
TopLevelElementDocumentPostFix.type.toString ( ) ) ;
            TopLevelElementDocumentPostFix toplevel = (
TopLevelElementDocumentPostFix )stl.parse ( xml ,
TopLevelElementDocumentPostFix.type , null ) ;

This last line gives a ClassCastException.
The output from the System.out is the string "D=topLevel" (i.e. the name
of the top level element in my xml document).

Does anyone  see what I am doing wrong ? 

thank you very much,
Heikki Doeleman 

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