Re: TDS datasetScan and Service

Hi Benoit,

I'm afraid there isn't a way for the datasetScan to produce different 
paths for the same dataset depending on the nested service. The 
datasetScan was not designed with this in mind. Actually, nested 
services weren't designed with this in mind either. When a nested 
service is referenced by a dataset, the same urlPath is always used on 
all the nested services.

This can be represented in a THREDDS catalog by using multiple <access> 
elements in each dataset. Each <access> element references a service and 
provides a urlPath so each one can be controlled however you like. 
However, datasetScan doesn't generate <access> elements and we don't 
have any other ways to automatically generate this kind of dataset

More detail on the <access> element is available at

http://www.unidata.ucar.edu/projects/THREDDS/tech/catalog/InvCatalogSpec.html#access

Hope this helps,

Ethan

Benoit GORDET wrote:

> Hello there,
>
>   I'm new in working with TDS, and i need your help.
> I use a datasetScan element, and i try to have many different services 
> access. I use nested service:
>
> <service name="multiple" serviceType="Compound" base="" >
>        <service name="thisDODS" serviceType="OPENDAP" 
> base="/thredds/dodsC/" />
>        <service name="CORftp" serviceType="FTP"         
> base="ftp://address@hidden/coriolis/data/CORT-GLOBAL-01/oa/field/"; 
>         suffix=".bz2"/>
>        <service name="CORlas" serviceType="LAS"         
> base="http://www.ifremer.fr/las/"; />
>     <service name="CORweb" serviceType="WebForm"         
> base="http://www.ifremer.fr/co/"; />
> </service>
>
> then
>
> <datasetScan  location="/global/salinity/weekly/CORT-GLOBAL-01/" 
> path="PSAL" name="Salinity" serviceName="multiple" />
>
> The access results  for the  data OA_20051102.nc (exemple of a founded 
> data in the directory scanned) is logically:
>
>   1. OPENDAP: http://rhsism11:8080/thredds/dodsC/PSAL/OA_20051102.nc
>   2. FTP: 
> ftp://address@hidden/coriolis/data/CORT-GLOBAL-01/oa/field/PSAL/OA_20051102.nc.bz2 
>
>   3. LAS: http://www.ifremer.fr/las/PSAL/OA_20051102.nc
>   4. WebForm: http://www.ifremer.fr/co/PSAL/OA_20051102.nc
>
>
> The problem is that LAS server and WebForm (Web image displaying) 
> havent the wanted URL. I want: 
>   1. OPENDAP: http://rhsism11:8080/thredds/dodsC/PSAL/OA_20051102.nc
>   2. FTP: 
> ftp://address@hidden/coriolis/data/CORT-GLOBAL-01/oa/field/PSAL/OA_20051102.nc.bz2 
>
>   3. LAS:http://www.ifremer.fr/las/servlets/dataset
>   4. WebForm: http://www.ifremer.fr/co/co0525/en/global/
>
>
> So typically the datasetScan path (here PSAL) is not good for all the 
> services. Is there a
> way to have differents paths value for each nested service?
> Thanks
>
> Benoit

--
Ethan R. Davis                                Telephone: (303) 497-8155
Software Engineer                             Fax:       (303) 497-8690
UCAR Unidata Program Center                   E-mail:    address@hidden
P.O. Box 3000
Boulder, CO  80307-3000                       http://www.unidata.ucar.edu/
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