CODEWITHSUNDEEP
xmlxsd
Michael
Michael

Reputation: 285

XSD unlimited list of 2 different elements, at least one of either, any order

This seems to be a limitation of XML Schema 1.0 but I'm giving it one last try.

Say I have

<?xml version="1.0" encoding="UTF-8"?>
<Box>
    <RedToy/>
    <BlueToy/>
</Box>

The box can have {1,unbounded} toys.

There's always at least one of either <RedToy/> or <BlueToy/>.

There can be any combination of red and blue.

Order is arbitrary, and there's therefore arbitrary numbers of boundaries between series of red and series of blue, so for example, this answer does not work:

XSD schema for multiple XML elements with at least one present, in any order

This is impossible to define with XSD 1.0, right?

Related:

XML schema construct for "any one or more of these elements but must be at least one"

Upvotes: 0

Views: 113

Answers (1)

Michael Kay
Michael Kay

Reputation: 163458

I'm not sure I've understood what you mean by "at least one of either". Do you mean (a) at least one Red and at least one Blue, or (b) at least one Toy, which may be either Red or Blue)?

(a) would, I think, be

( R+ B (R|B)* ) | ( B+ R (R|B)* )

(b) would be simply

(R|B)+

Upvotes: 1

Related Questions