Re: [Bug 12127] "Root element" in assertion testing

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In trying to work through my understanding of the issues involved, I
encountered the mini-worked-through-example in the Note in clause
3.1.2 of Schema Representation Constraint: Override Constraints and
Semantics [1]:

  3.1.2.1 First, the override of B by C is handled. The resulting
  schema document still contains an <override> element referring to C,
  but the declaration for E contained in it has been replaced by that
  specified in C.

This can't be right.  There _is_ no "<override> element referring to
C" in the example framing, so it can't "still [be contained]". . .

I note furthermore that a one-time name is defined in the constraint
but, as far as I can see, never used, namely *S2*.

Back to the example -- is this what is meant:

Note:  Suppose
  A defines E
  B has override(E',A)
  C has override(E'',B)
Then to determine the schema corresponding to C:

  1) The override of B by C is handled.  The result is
     A defines E
     B' has override(E'',A)
     C "has" include(B')

  2) The override of A by B' is handled.  The result is
     A' defines E''
     B' "has" include(A')
     C "has" include(B')

  3) The final result is
     C defines E''

Right?

[1] http://www.w3.org/XML/Group/2004/06/xmlschema-1/structures.html#src-override
- -- 
       Henry S. Thompson, School of Informatics, University of Edinburgh
      10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- (44) 131 650-4440
                Fax: (44) 131 651-1426, e-mail: ht@inf.ed.ac.uk
                       URL: http://www.ltg.ed.ac.uk/~ht/
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Received on Monday, 7 March 2011 16:50:11 UTC