Re: [xml-dev] XSD Question: what is the current recommendation regarding large values for maxOccurs?

Michael Kay <[email protected]> wrote on 08/09/2011 08:56:36 AM:

> > Is that still the recommendation? Or, are validators more
> sophisticated now and can handle large values for maxOccurs?
> >
>
> I think you will find that some are, some aren't, and with some - it
> depends, based on where the maxOccurs lives in the content model. Saxon
> these days is fine with a large maxOccurs at the top level of a content
> model, but it can struggle if you have one within a choice especially if
> the choice itself has a maxOccurs.

A similar story for Xerces-J. Counters are used to handle the simpler cases.

> I still find it a little implausible that there are "business
> requirements" not to have more than 500 Foo elements. What are these:
> order lines in a purchase order? Employees in a department? Contact
> names/addresses for a customer? I suspect they are not so much business
> requirements as limits imposed by older IT (or paper) processing systems.
>
> Michael Kay
> Saxonica
>
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Michael Glavassevich
XML Parser Development
IBM Toronto Lab
E-mail: [email protected]
E-mail: [email protected]