[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Selective restriction for attributes based on elementvalue
Hi Dennis, No, I am able to define restrictions in other cases. However, my requirement is to apply restrictions on the attribute based on the value of the element. Consider the example I have pasted here. When the value of the <startTag> is op1 the attribute value must be alphabetic. When the value of the <startTag> is op2 it must be numeric. How do I this ? I am thinking of a "less-heroic" option now. That is, designing my xsd such that, the tags are created by what is currently the values of <startTag> (the list of values is known and finite) and then use attributes (currently) as the values of the tags. Like so, <op1>x</op1> and <op2>0</op2> Regards, Nags. Dennis Sterzenbach wrote: > Hello Nagesh, > > Nagesh Subrahmanyam wrote: > >> I have an element <startTag> with attribute as type. The value of the >> attribute type can be numeric or alphabetic (with or without limits >> and/or patterns) depending on what was the value of the element. The >> value of the element would be string always. How do I apply such a >> restriction for the attribute ? >> >> Examples : >> <startTag type="x">op1</startTag> >> <startTag type="0">op2</startTag> >> >> Regards, >> Nags. >> > > I suggest you want to know, how to define the restriction for some XSD > Schema? As far as I know for that case you have to define your own type, > which might look like this (untested): > > <xs:simpleType name="myRestrictedType"> > <xs:restriction base="xs:string"> > <xs:pattern value="([a-zA-Z]|[0-9])"/> > </xs:restriction> > </xs:simpleType> > > and reference from your attribute declaration: > > <xs:attribute name="type" type="myRestrictedType" use="required" /> > > Hope that helps! > -- Dennis Sterzenbach > >
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