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On 08/10/2010 20:23, Costello, Roger L. wrote:
However, I really need sequences of sequences.
xpath 2.1 draft proposes function items, which makes it easy to have a sequence of references to sequences, but as you say in xpath 2 it isn't supported by the data model.
You can't easily implement functions that use a datatype that doesn't exist. options are 1) wait for 2.1 or 2) use a single sequence, using marker items (or fixed length) to denote where the subsequences stop and finish. or 3 serialise the sequences to an xml structure and then use xml tree nesting to model sequences of sequences. or ... David
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