Why is xs:complexContent not supported?

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1

Hallo,

a customer asks why xs:complexContent is not supported? Can someone tell me why and if it might be supported in future?

Thanks,
Pascal Sch

2

Hi Pascal

Up to version 4.2 Tamino’s subset of XML Schema does not support
derivation from user-defined types.
Hence, only complex types derived from xs:anyType are supported.
In this special case, the xs:complexContent element is not required
in the schema as there is a more compact description for the scenario:

<xs:complexType name=“A”>
xs:complexContent
<xs:restriction base=“xs:anyType”>
xs:sequence
<xs:element name=“B”/>
</xs:sequence>
</xs:restriction>
</xs:complexContent>
</xs:complexType>

is equivalent to

<xs:complexType name=“A”>
xs:sequence
<xs:element name=“B”/>
</xs:sequence>
</xs:complexType>

However, the next version of Tamino will probably support derivation
from user-defined types and, thus, also xs:complexContent.

Best regards
Uli

PS: there is a separate “Schema [Editor]” topic in the forum
dedicated to schema issues like this :slight_smile: