Title: [xml-dev] Access to elements from schema imported once removed !






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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