From Jonathan.Ball at domino-uk.com  Tue Oct 18 06:22:12 2016
From: Jonathan.Ball at domino-uk.com (Jonathan Ball)
Date: Tue Oct 18 06:22:26 2016
Subject: [xsde-users] Adding unique constraint to an xsd
Message-ID: <HE1PR05MB1417DF32FD2B815C698D8000BCD30@HE1PR05MB1417.eurprd05.prod.outlook.com>

Hi,

We have added a constraint such that the ID of polymorphic elements is unique across all instances of those elements.  When encountering duplicated IDs, XSD/e does not raise an error - is this supported on XSD/e?

Code snippet:
    <xs:element name="root" type="FOO:Root">
       ...
        <xs:unique name="uniqueContentIdentifier">
            <xs:selector xpath=".//FOO:Type1 | .//FOO:Type2 | .//FOO:Type3" />
            <xs:field xpath="@id"/>
        </xs:unique>
        ...
    </xs:element>

Kind Regards,
Jon

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From boris at codesynthesis.com  Tue Oct 18 11:43:17 2016
From: boris at codesynthesis.com (Boris Kolpackov)
Date: Tue Oct 18 11:43:28 2016
Subject: [xsde-users] Adding unique constraint to an xsd
In-Reply-To: <HE1PR05MB1417DF32FD2B815C698D8000BCD30@HE1PR05MB1417.eurprd05.prod.outlook.com>
References: <HE1PR05MB1417DF32FD2B815C698D8000BCD30@HE1PR05MB1417.eurprd05.prod.outlook.com>
Message-ID: <boris.20161018174124@codesynthesis.com>

Hi Jonathan,

Jonathan Ball <Jonathan.Ball@domino-uk.com> writes:

> We have added a constraint such that the ID of polymorphic elements
> is unique across all instances of those elements.  When encountering
> duplicated IDs, XSD/e does not raise an error - is this supported on
> XSD/e?
> 
> Code snippet:
>     <xs:element name="root" type="FOO:Root">
>        ...
>         <xs:unique name="uniqueContentIdentifier">
>             <xs:selector xpath=".//FOO:Type1 | .//FOO:Type2 | .//FOO:Type3" />
>             <xs:field xpath="@id"/>
>         </xs:unique>
>         ...
>     </xs:element>

No, such constraints are not checked. That would require too much
memory/object code for XSD/e.

Boris