Bert, I think the file at https://svn.apache.org/repos/asf/incubator/tuscany/java/sdo/tools/src/test/resources/subgroup.xsddemonstrates what you want. Regards, Kelvin.
On 15/05/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
Hi all, I've a general question concerning polymorphism and SDO. Suppose I have a type A that contains a link "b" of type B. There also exists a subtype "SpecialB" which extends B. I interpret this link to be a polymorphic link, i.e. instances of this link should be of type B or of a subtype of B. This works fine when using the DataObject API (e.g. using the method DataObject.createDataObject(Property property, Type type)). However I don't understand how this is mapped into XML/XSD. If I generate an XSD for type A, how do I express that the link 'b' is polymorph? A straigtforward approach like <xsd:complexType name="A"> <xsd:sequence> <xsd:element name="b" type="B" maxOccurs="1" minOccurs="0"></xsd:element> ... ... states that the type of B should be exactly 'B' (at least according to my incomplete XML knowledge :-). On the instance level, <a><b>...</b></a> is an xml piece for an object of type A with a link to some b. How would this look like in case the link is to a SpecialB instance? So, my question is, how do polymorphic links work in an xml context? I hope this is clear. Bert --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]