xml-dev - XML Schema: Import and namespace question

[Didier Perhirin <dperhirin@smtp2.cosmosbay.com>]

Hi,

I'm currently working on the W3C XML Schema Working Draft 7 April 2000.
I have a question concerning the <import> element.
When I use such an element inside a schema, do the imported elements have
the same target namespace than the main schema, or do they keep their originating targetNamespace.
Concretely, if I have a schema imp_schema.xsd:

<xsd:schema targetNamespace="imported_schema_ns">
	<xsd:element name="tag1"/>
</xsd:schema>

and a main schema main_schema.xsd, which imports it:

<xsd:schema targetNamespace="main_schema_ns"
	xmlns:imp="imported_schema_ns">
	<xsd:import namespace="imported_schema_ns" schemaLocation="imp_schema.xsd"/>
	<xsd:element name="MainTag">
		<xsd:complexType>
			<xsd:element ref="imp:tag1"/>
		</xsd:complexType>
	</xsd:element>
</xsd:schema>

Is the following instance of the main schema valid :

<x:MainTag xmlns:x="main_schema_ns"
	xsi:schemaLocation="main_schema_ns main_schema.xsd">
	<x:tag1/>
</x:MainTag>

or this next one is better:

<x:MainTag xmlns:x="main_schema_ns"
	xmlns:y="imported_schema_ns"
	xsi:schemaLocation="main_schema_ns main_schema.xsd">
	<y:tag1/>
</x:MainTag>

I think the second one is right, but I still have some doubt ...


Thanks in advance for your answers,

Regards

Didier Perhirin
CosmosBay
mailto:dperhirin@cosmosbay.com



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