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Subject: [regrep-comment] Request: Cataloguing for ExternalLinks
We
have a requirement to build a statistical object portal, somewhat analogous to
"Google". It seems that with some minor
additions, the ebXML registry implementation could
support our use-case. We
will need to locate web-accessible (REST) statistical objects expressed as XML
streams using a classification-based search facility. These statistical objects
could be very large datasets or classifications and so it is not practical to
store them as repository objects local to the registry (there are other reasons
too: ownership, confidentiality etc.). The
cataloguing functionality of the registry is very attractive because it means
that the publisher of the statistical objects will only have to register them
with the registry, and the classification can be done automatically. This would
mean that the cataloguing service would have to read the data stream and
generate the necessary registry objects (slots, classifications etc.). For efficiency, it may be preferable to
have 2 URIs, one for the statistical object and one
for its metadata (if available). The metadata would be used to drive the
cataloguing process more efficiently due to its small size compared to the statistical
object itself. In
the registry, this could be modeled as an externalLink
for the statistical object and either an extrinsicObject
or externalLink for the metatdata
(which is small in volume). There could be an association "metaDataFor" between the statistical object EL and the
metadata. The cataloguing service could look for this link, and if not found
read the statistical object directly. To
support this, cataloguing would need to be available to externalLink
objects in addition to extrinsicObjects. A boolean property of catalog would
be necessary so that not all externalLinks would be
catalogued automatically. Regards Steve Allman |
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