Re: [Exist-development] Metadata in eXist

[Patrick B. <pat...@jo...>]

I really like the concept of implementing metadata axis.

After reading over MarkLogic's implementation, I think it may be a very good
idea to essentially mimic them. It looks like their system would accomplish
most of the goals expressed here thus far. And I'm always a proponent of
consistency.

Thoughts?

Cheers,

Patrick

On Wed, Jul 28, 2010 at 9:50 AM, Joe Wicentowski <jo...@gm...> wrote:

> Very interesting discussion; I second all that Dan said about his use
> cases.  Just a note on Adam's e-mail:
>
> > The new user customisable metadata becomes a simple key value store
> > and is indexed on document id and unique key name. Each value follows
> > XQuery datatype rules and may be either an atomic value or a sequence.
> >
> > We then establish a metadata axis which is available in XQuery. From
> > here we can use the standard predicates and update facilities of
> > XQuery to maintain the metadata. The context of the metadata axis
> > would always be the document root of the current node as metadata is
> > on a per-document level, not a per-node level.
>
> The metadata:: axis strikes me as similar in notion to the MarkLogic
> property:: axis, although the latter stores metadata as an XML node
> rather than key/value pair.  See:
>
>
> http://docs.marklogic.com/4.1doc/docapp.xqy#display.xqy?fname=http://pubs/4.1doc/xml/dev_guide/properties.xml
>
> I raise this as an existing implementation for comparison.
>
> Joe
>



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Patrick Bosek
Jorsek Software
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