RE: ClassCastException when parsing using SchemaTypeLoader

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:hdoeleman@xxxxxxxxxxx]
Sent: Wednesday, November 15, 2006 2:49 AM
To: user@xxxxxxxxxxxxxxxxxxx
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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