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Is-a (was-a Re: Victory has been declared in the schema wa

• From: "Rick Jelliffe" <rjelliffe@a...>
• To: xml-dev@l...
• Date: Mon, 4 Dec 2006 13:42:05 +1100 (EST)

Richard Salz said:
>>   <pattern is-a="RequiredChild">
>
> Why 'is-a'?  Why not something already common, like id or name?  Then I
> could easily expect to use the fragment notation to fetch a pattern, or
> reference it within a namespace URI.

The pattern can have a name attribute to give it an id. I left them out of
the examples for clarity.

The is-a attribute connects the pattern to an abstract pattern declaration
with the same name. So in the example above there would be something like
  <pattern name="RequiredChild" abstract="true">
     <rule context=" $parent ">
        <assert test=" count( $child ) &gt;= 1 ">
        In a <name/> element, the element <name select=" $child "/> is
required.
         </assert>
      </rule>
   </pattern>

Cheers
Rick Jelliffe

• References:
  • Re: Victory has been declared in the schema wars ...
    • From: "Rick Jelliffe" <rjelliffe@a...>
  • Re: Victory has been declared in the schema wars ...
    • From: Richard Salz <rsalz@u...>