Re: [thredds] Subsetting thredds catalog changes catalog

• To: thredds@xxxxxxxxxxxxxxxx
• Subject: Re: [thredds] Subsetting thredds catalog changes catalog
• From: Ethan Davis <edavis@xxxxxxxxxxxxxxxx>
• Date: Thu, 08 Jul 2010 17:10:03 -0600

Hi Craig,

No, you aren't doing anything wrong. That is a bug in the TDS.

We have it on our bug list and I'm hoping to get to it before TDS 4.2
becomes the stable release. I don't think it will get ported back to TDS
4.1 as it looks to be a fairly extensive fix.

Ethan

On 6/29/2010 5:08 AM, Craig Jones wrote:
> Hi All,
> 
> I'm trying to use the thredds catalog service to subset a catalog as per
> http://www.unidata.ucar.edu/projects/THREDDS/tech/reference/CatalogService.html
>  .
> 
> In particular I'm using the ?dataset={ID} form to return an xml catalog
> subset.
> 
> This works fine when the dataset I'm trying to subset is generated by a
> datasetScan element, but when the dataset has been manually specified,
> performing this operation appears to change the servers copy of the
> parent catalog to match the subset.  I've tried this in thredds 4.0, 4.1
> and 4.2 (downloaded today).
> 
> I'm using this service to try and resolve the metadata and services that
> are available for a particular dataset so that I can then make use of
> this information.
> 
> I have this problem with the default catalog installed with thredds as
> well as other catalogs.  For example if I use the following access url:
> 
> http://localhost:8081/thredds/catalog.xml?dataset=testDataset2
> 
> When I next use http://localhost:8081/thredds/catalog.xml I get the same
> catalog as that returned by the first url (i.e. the parent catalog
> becomes the subset).  I also can't subset any other target datasets that
> were originally defined in the catalog before doing this operation.
> 
> The catalog is restored when I restart the server.
> 
> Am I doing something wrong here or am I misinterpreting this?
> 
> 
> Thanks,
> 

• References:
  • [thredds] Subsetting thredds catalog changes catalog
    • From: Craig Jones