I do not see any problem in the schemas, Xerces 2.7.1 validates the 
instance document without problems.
Note that xs:element/@name value is a non qualified name so it does not 
require a default namespace and it is not allowed to specify a prefix; 
the global elements belong to the schema target namespace.

Best Regards,
George
---------------------------------------------------------------------
George Cristian Bina
<oXygen/> XML Editor, Schema Editor and XSLT Editor/Debugger
www.---.com


Chiusano Joseph wrote:
>  From a quick glance, in your "imported schema", element "globalElement 
> is not in the "urn:foo" namespace because it does not have a namespace 
> prefix, and you have not specified a default namespace for that schema. 
> If you add a default namespace declaration to the imported schema that 
> makes the "urn:foo" namespace your default namespace, it should work.
> 
> Joe Chiusano
> 
> ------------------------------------------------------------------------
> 
> *From:* Fraser Goffin [mailto:goffinf@h...]
> *Sent:* Mon 9/5/2005 10:03 AM
> *To:* xml-dev@l...
> *Subject:* [xml-dev] Access to elements from schema imported once removed !
> 
> I have a main transcation schema which INCLUDEs a schema containing a number
> of type definitions. That schema IMPORTs another schema which contains some
> global element declarations which are used to extend one of the types in the
> import'ing schema.
> 
> Transaction schema
>   --> includes base types
>        --> imports global elements
> 
> When an XML instance based on the transaction schema is created that
> contains a reference to one of the global elements of the imported schema,
> XMLSpy">XMLSpy outputs the message :-
> 
> 'Could not validate element <<globalElement>>. No type definition was found'
> 
> If I view the transaction schema, the imported types and elements are
> clearly visible. Can anyone tell me why the XML is invalid ??
> 
> I have attached a simplified example below :-
> 
> XML Instance Doc
> ===========
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <tns:includedRoot xmlns:tns="urn:bar"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xsi:schemaLocation="urn:bar includingSchema.xsd" xmlns:imp="urn:foo">
>   <fromImported>
>     <root>blah</root>
>     <imp:globalElement>blah</imp:globalElement>
>   </fromImported>
> </tns:includedRoot>
> 
> transaction schema
> ============
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="urn:bar"
>   targetNamespace="urn:bar"
>   elementFormDefault="unqualified" attributeFormDefault="unqualified">
>   <xs:include schemaLocation="importingSchema.xsd"/>
>     <xs:element name="includedRoot">
>       <xs:complexType>
>         <xs:sequence>
>           <xs:element name="fromImported" type="Extended"/>
>         </xs:sequence>
>       </xs:complexType>
>     </xs:element>
> </xs:schema>
> 
> 
> importing schema
> ===========
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
> elementFormDefault="unqualified"
>    attributeFormDefault="unqualified" xmlns:imp="urn:foo">
>   <xs:import namespace="urn:foo" schemaLocation="importedSchema.xsd"/>
>   <xs:complexType name="myBaseType">
>     <xs:sequence>
>       <xs:element name="root" type="xs:string"/>
>     </xs:sequence>
>   </xs:complexType>
>   <xs:complexType name="Extended">
>     <xs:complexContent>
>       <xs:extension base="myBaseType">
>          <xs:sequence>
>            <xs:element ref="imp:globalElement" minOccurs="0"/>
>          </xs:sequence>
>       </xs:extension>
>     </xs:complexContent>
>   </xs:complexType>
> </xs:schema>
> 
> imported schema
> ==========
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
> elementFormDefault="qualified"
>   attributeFormDefault="qualified" targetNamespace="urn:foo"
> xmlns="urn:foo">
>   <xs:element name="globalElement" type="xs:string"/>
> </xs:schema>
> 
> 
> 
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