Re: Repeating IriTemplate parameters

Am 10.11.2015 13:49 schrieb Ruben Verborgh <ruben.verborgh@ugent.be>:
>
> Hi Maik, 
>
> > If I have a URL structure with repeating parameters like 
> > 
> > http://example.com/coveragecollection?include=domain&include=range 
> > 
> > how would that look like in an IriTemplate? 
>
> I think that would be 
>     http://example.com/coveragecollection?include={includes} 
> where the variable includes is multi-valued. 
>
> We would then need a variable serialization for multiple values, 
> that for instance expands the template to 
>     http://example.com/coveragecollection?include=abc,def 
>
> > Is that possible at all? 
>
> I don't see multi-valued parameters in the spec right now. 
> Others, do we have something for that? 
>

We do, since we refer to RFC 6570 for the IriTemplate syntax. 

The UriTemplates RFC 6570 has a * modifier for this:
http://tools.ietf.org/html/rfc6570#page-16

It is used for list and object expansion. 

List expansion examples:

Given the variable assignments
year := ("1965", "2000", "2012") 
dom := ("example", "com") 

Example         Template Expansion 

find{?year*}    find?year=1965&year=2000&year=2012 www{.dom*}  www.example.com

There is also an object expansion example which resolves an address object into keyvalue pairs for the address attributes. 

HTH
Dietrich