Re: 20050922:DODS/THREDDS confusion

[James Gallagher <jhrg@xxxxxxx>]

On Mar 9, 2006, at 9:00 AM, John Caron wrote:

> Hi David:
>
> This looks great, a few comments aboyut what i did in the netcdf- 
> java library which reads opendap:
>
> David Wojtowicz wrote:
> > OK,
> > Here's what I have come up with concerning the discussion in this  
> > thread.   Thanks for considering these potential changes.  A  
> > pointer to the patch is at the end of this message.
> > ***** Summary of Modified Functionality:
> > 1) All containerized attributes are now "flattened" into the flat  
> > namespace.  A colon seperates the container name from the  
> > contained attribute name.  Since all container attributes are  
> > removed by this process, the netCDF API no longer chokes from  
> > encountering one, and the former contents of the containers are  
> > now available to access in flat namespace if the user cares to do so.
>
> I did the same in netcdf-java library, but it uses a "." instead of  
> a ":" to seperate the container name(s)

David, Would you mind if I changed your code to match the behavior of  
John's library?
James
> > 2) Because containerized attributes containing strings, are not  
> > quoted, the code that removes the quotes is modified to ignore the  
> > case where there is no quotes.
> > 3) In the case of arrays of strings, the array is translated to an  
> > array of characters of  the next higher rank, with the extra  
> > dimension's size and name being determine as follows:
> > a) If DODS:strlen attribute exists  (or varname:DODS:strlen in the  
> > case of translated structures)  it supplies the size and  
> > DODS:dimName supplies the name
> > or
> > b) otherwise, the STRING_ARRAY_SIZE constant is used as the size  
> > and varname-chars is used as the dim name.
> > The extra dimension  is added to the global dimension list (if not  
> > already existing).   If the name already exists for some reason,  
> > but with a different size, an alternate name is used.
> > 4) Single scalar strings are treated in a similar manner.
>
> I believe I prefetch all scalar Strings, and determine their  
> correct length, then cache the data values.

--
James Gallagher                jgallagher at opendap.org
OPeNDAP, Inc                   406.723.8663