[thredds] <dataSize> embedded within <metadata> within <dataset> not picked up by NetCDF-Java Library.

[Hannah Wilcox]

Hello!

I am using the NetCDF-Java Library to parse TDS configuration THREDDS  
catalogs and I've run into a sticky point that I'm hoping you can  
help sort out.  I have an example TDS configuration file which I can  
read in and validate using the NetCDF-Java Library, but a certain  
piece of information I'm expecting to see is either NOT there, or in  
a place I'm not looking.  The piece of information is a dataSize for  
a dataset.   The twist here is that the dataSize is embedded within a  
metadata tag thusly:

                         <dataset name="Atmosphere"  
ID="cgcm3.1_t47_atmos" serviceName="gridded">
                                 <metadata inherited="false">
                                         <dataSize  
units="Kbytes">439.78</dataSize>
                                 </metadata>
			</dataset>

The specification says that a <dataset> can contain an element of the  
threddsMetadataGroup which contains <metadata> and <metadata> can  
contain elements of the threddsMetadataGroup which includes  
<dataSize>.  However when I look at the InvDatasetImpl that this  
example produces, getDataSize() returns 0.0 and I cannot see the size  
in any of the metadata structures.


My questions are:

-  Is this a valid structure?

-  If it is a valid structure, is there a reason the size element of  
an InvDatasetImpl is not populated with the dataSize from this  
structure?

-  If it isn't a valid structure, can that somehow be noted or  
changed in the specification?


Thanks for your time,


Hannah Wilcox

Software Engineer in the VETS group
hannah at ucar.edu