derivation by restriction and to - definition

["Usorov, Evgeny" <EU...@kbv.de>]

Hi,

Our company defines some XML-Intefaces for exchange eHealth-data. So our global-schema-Standart 
for all interfaces can be only restricted by the specific XML-Schema-Interface. 
But i get all the time problems when somebody wants to restrict the global-schema. 

Situation:
Our standart provider_typ, only short-cut
	<xs:complexType name="provider_typ">
		<xs:sequence>
			<!-- here some other elements like provider.type_cd, that are not relevant for this example-->
			<xs:choice maxOccurs="unbounded">
				<xs:element ref="person"/>
				<xs:element ref="organization"/>
			</xs:choice>
		</xs:sequence>
	</xs:complexType>

So with that type I can have 3 persons, who belongs to 1 organization. Now somebody 
wants to define specific schema for doctors, like one group practice can have 
many doctors. So here the specific_provider_typ

	<xs:complexType name="specific_provider_typ">
		<xs:complexContent>
			<xs:restriction base="provider_typ">
				<xs:sequence>
					<!-- here other specific elements, that are not relevant for this example-->
					<xs:element ref="person" minOccurs="0" maxOccurs="unbounded"/>
					<xs:element ref="organization"/>
				</xs:sequence>
			</xs:restriction>
		</xs:complexContent>
</xs:complexType>

So now in this specific_provider_typ I changed <choice> to <sequence>, now there have 
to be one organization and may be some persons. I think from the XML-view this is a 
valid restriction. 
But Xerces (2.6.2) reports an error:
[Error] test.xsd:129:47: rcase-Recurse.2: There is not a complete functional mapping between the particles.
[Error] test.xsd:129:47: derivation-ok-restriction.5.4.2: Error for type 'specific_provider_typ'.  The particle of the type is not a valid restriction of the particle of the base.

Is it not allowed to change from <choice> to <sequence> or this is Xerces bug ? 
I tryed other ways to define global-schema, but without success. Only thing that works is to define in the global-schema normal <sequence> without <choice>.

Can somebody help ?
Thanks in advance
Evgeny Usorov
www.kbv.de

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scope of import

[Jeehong Min <je...@parasoft.com>]

All,

Just wanted to verify correct behavior in Xerces.

Suppose I have 3 schemas, with namespaces A, B, and C.
Schema A imports only schema B.  Schema B imports schema C.
Is it legal for schema A to use a type from schema C?

Xerces says no, saying that types from schema C are not referenceable from
schema A.  I agree with Xerces.  However, I have a customer who is using
XMLSpy which does not complain about this.

So, what is the correct interpretation?

Thanks,

Jeehong


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