Proposed changes to the THREDDS catalog format are at:
http://www.unidata.ucar.edu/projects/THREDDS/tech/InvCatalog6.html
The current format is documented at:
http://www.unidata.ucar.edu/projects/THREDDS/tech/InvCatalog5.html
Summary of changes:
a.. add <attribute> elements to collection, dataset, service
b.. rename "server" element to "service".
c.. add new service types: (DODS | ADDE | NetCDF | Catalog | FTP | OpenGIS
| WSDL | Other) .
d.. allow multiple services per dataset: add <access> child element of
dataset, where you list any number of services for that dataset, and add
<serviceList> element so you can define a list of services. "serviceId" now
refers to either a service or a serviceList. Use a serviceList when the same
dataset urlPath can be appended onto all service bases.
e.. generalize <datasetDescRef> element to <metadataRef>, where
"DatasetDesc" is one of several metadata types. proposed types: (DatasetDesc
| DublinCore | DIF | ADN | FGDC | LAS | Other)
f.. add "ID" and "alias" attributes to dataset, so that a dataset can be
an alias to another dataset.
Please send comments to me or to this list.
