Unique Doesn't Work

[DITAToo]

Hi All,

I have the following XML file (I deleted from this example the reference to the XML schema to keep it clean):

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<command_group>

    <command>

        <command_name>10</command_name> 

        <command_description>My command description</command_description>

    </command>

    <command>

       <command_name>12</command_name>

       <command_description>My another command description</command_description>

    </command>

    <command>

        <command_name>10</command_name>

        <command_description>ewewe</command_description>

    </command>

</command_group>

This is my XML schema:

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<xs:element name="command_group">

	<xs:complexType>

		<xs:sequence>

		      <xs:element name="command" minOccurs="1" maxOccurs="unbounded">

				<xs:complexType>

					<xs:sequence>

						<xs:element name="command_name" type="xs:integer" />

						<xs:element name="command_description" type="xs:string" />						

					</xs:sequence>

				</xs:complexType>		

			</xs:element>

		</xs:sequence>		

	</xs:complexType>				

	<xs:unique name="uniqueCommand">

		<xs:selector xpath="command" />

		<xs:field xpath="command_name" />

	</xs:unique>

</xs:element>

I would expect that the XML file wouldn't pass the validation because "10" appears twice as the value of <command_name>. But Oxygen keeps saying that the file is OK. If I intentionally try to do other invalid things (just to check that the schema is working at all), like entering string values into <command_name>, it does say that I entered an invalid value.

Am I doing anything wrong?

Thanks!
Alex

[adrian]

Hi,

Using just the code snippets that you provided, it doesn't pass validation. Both Xerces and Saxon-EE report the problem:

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E [Xerces] cvc-identity-constraint.4.1: Duplicate unique value [10] declared for identity constraint "uniqueCommand" of element "command_group".

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E [Saxon-EE 9.5.1.2] Non-unique value found for constraint uniqueCommand: 10

Is there a target namespace for the schema?
If that's the case, note that the XPath expressions used in the @xpath attributes need the appropriate namespace to be specified. Have a look at the "personal.xsd" sample file from the Oxygen samples (Oxygen/samples/personal.xsd).

Regards,
Adrian

[DITAToo]

Hi Adrian,

That's it! targetNamespace caused the problem. I got rid of it, and it's working fine now.

Thank you very much,
Alex