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- From: Peter Murray-Rust <email@example.com>
- To: firstname.lastname@example.org
- Date: Tue, 10 Nov 1998 19:51:01
I have spent the last week or so hacking XSchema into JUMBO and testing it
Firstly to say many thanks to those who have contributed and especially to
Ron Bourret, Simon StL and John Cowan [I hope I haven't missed anyone] for
driving this through.
It is exactly what is wanted at present. The mapping onto the DTD is
precise and essential for me. Without it I suspect that it would be more
difficult to implement correctly.
I have fitted it to JUMBO with the functions:
- offering a list of potential child elements for a given element. [This
doesn't yet do on-the-fly content validation and I doubt it will. It gives
a JComboBox of the possible children. If someone has a Model validation
routine I can fit it.] This allows XSchema-drive editing of element names
- offering a table of attributes with the various options (Required,
Value, etc.) driving the editability of various fields.
By implication, of course, the editor can be used to edit XSchemas.
I have used RonB's DTD2XSchema translator - works fine, but I think Ron
said it needed slight tweaks.
** Is there a way of capturing the external DTD subset in SAX, or AElfred,
or any other parser? It really only needs to capture the URL? Do I have to
subclass an Entity handler? In this way it would be possible to read in the
DTD automatically, transform to XSchema and display.] **
** Is there any way to extract the complete "DTD" - i.e. external and
internal subsets (but without parameter/general entities) from
I hope to release the XSchema-aware JUMBO (i.e. a structure/attribute-aware
XML editor) very shortly so people can verify if I have got the mechanics
right and whether this is something useful.
Peter Murray-Rust, Director Virtual School of Molecular Sciences, domestic
VSMS http://www.nottingham.ac.uk/vsms, Virtual Hyperglossary
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