Re: THREDDS and lightly restricted datasets

John Caron wrote:

> thats an interesting issue. i suppose we can add an optional attribute 
> to the documentation element, like mustNotify="true" which means to 
> clients that they should pop up the contents of the documentation 
> element and have the user press "Accept".  Do you think that would 
> suffice?


I want to say yes, something like that would work, but that supposes,

1) all THREDDS clients would do the right thing, and
2) all DODS/OPenDAP/WCS/ADDE clients would display the restrictions in 
the THREDDS catalog.


1) is possible at this stage of THREDDS, I think, but 2) seems pretty 
unlikely.   It would really take a communal commitment to this sort of 
thing to make it work, and I am not sure the interest is really there.   
The alternative is for me to set up user names and passwords so that I 
(as the original server) can take care of challenging the user using 
HTTP and then allowing the user to use the data.   Not my favorite 
solution, but at least it works.


Benno


> I realize THREDDS is mostly about freely exchanged data, and 
> restricted data is OK too because the underlying data server is 
> responsible for restricting access to the data.   But there is another 
> class of data which required display of some agreement as a condition 
> for use.
>
> The classic example is WMO40, the key phrase being "must provide this 
> same notification" ,e.g.
>
> *The following data and products may have conditions placed on their 
> international commercial use. They can be used within the U.S. or for 
> non-commercial international activities without restriction. 
> Re-distribution of these data by others must provide this same 
> notification. A log of IP addresses accessing these data and products 
> will be maintained and may be made available to data providers. *
>
> *For details, please consult: *
>
> *http://www.wmo.ch/web/ddbs/jen/AdditionalData&Products/AdditionalData&Products.html 
> <http://www.wmo.ch/web/ddbs/jen/AdditionalData&Products/AdditionalData&Products.html> 
>
> *