[netcdf-java] Groups and inheritance of variable, dimension and attribute definitions

Hi Guys,

I am learning the netcdf-java API. My reference point is the following diagram and related resources:


I understand that variable, dimension and attribute may be defined within a parent group and be inherited by child groups and referenced within the definition of data and variables in that group or a child group. Do I have this right? Whats a good reference to understand the inheritance semantics of variable, dimension and attribute definitions within groups?

To provide some context, I am working on a specification to catalog NetCDF data files into an ebXML RegRep server and a Context Query Language (CQL) context set for querying such a NetCDF using CQL.

The cataloging process needs to harvest metadata about the NetCDF file and its groups, variable, dimension and attribute. This requires having some way to reference groups, variable, dimension and attribute using a unique id. There does not seem to be anything resembling a UUID in NetCDF. Would the FullName be the unique id within the scope of the NetCDF file? Is there a need for a globally unique id for groups, variable, dimension and attribute (perhaps generated using file url as scope)?

Please let me know if my questions are not clear. Thank you.

Farrukh Najmi

Web: http://www.wellfleetsoftware.com

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