On Wed, 27 Jun 2001, Heike Franosch wrote: > works fine: > <xsd:element name="foo" type="FooType"> > <xsd:unique name="blubSelector"> <------------- > unique here with xpath="bar" > <xsd:selector xpath="bar"/> > <xsd:field xpath="@id"/> > </xsd:unique> > </xsd:element>
> does not work: > <xsd:element name="foo" type="FooType"/> > > <xsd:complexType name="FooType"> > <xsd:sequence> > <xsd:element name="bar" type="BarType" maxOccurs="unbounded"/> > <xsd:unique name="blubSelector"> > <------------------- unique here with xpath "." > <xsd:selector xpath="."/> > <xsd:field xpath="@id"/> > </xsd:unique> In the first instance, the XPath expression "bar" represents the node set containing all the bar children of the current element, so the unique constraint says that the id attributes must be unique among among all the bars. In the second case, the XPath expression "." represents a single node (the current bar), so the uniqueness constraint says that the id attribute of this single bar element must be unique, which it will always be. Ian -- Ian Roberts, Software Engineer DecisionSoft Ltd. Telephone: +44-1865-203192 http://www.decisionsoft.com --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
