Am Mittwoch, 4. April 2007 14:42 schrieb Nikolay Samokhvalov:
> Maybe it's worth to start keeping additional information in xml datum (i.e.
> bit IS_DOCUMENT and, what is more important for xpath() function, a bit
> indicating that XML value has only one root and can be considered as a tree
> => there is no need to wrap with <x> .. </x>).  But this change requires
> additional time to design xml datum structure and to rework the code
> (macros, I/O functions...).

To determine if an XML datum is a document, call xml_is_document().  The 
implementation of that function is probably not the best possible one, but 
what the xpath() code does it totally wrong nevertheless.

Peter Eisentraut

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