[SR-Users] Selects vs PVs

[Alex Balashov]

This is a distinction arising from the integration of SER and Kamailio into sip-router.  Selects come from the SER side, while PVs come from the Kamailio side.  

You can use either one depending on your needs; there is no methodological prescription here, want one though you may. :-) Beware that the @... syntax for accessing selects is not recognised/evaluated inline to a string literal by most functions that take PVs in their arguments, though, so you'd have to wrap the select inside the PV container for accessing them: $sel(...)

Obviously, there are things selects provide that lack corresponding PVs, such as much more granular SIP message attributes, access to global cfg_get variables, etc.  But in terms of it being better to use one or the other, or the theory that one is somehow deprecated at the expense of the other -- that is not the case.

--
This message was painstakingly thumbed out on my mobile, so apologies for brevity, errors, and general sloppiness.

Alex Balashov - Principal
Evariste Systems LLC
260 Peachtree Street NW
Suite 2200
Atlanta, GA 30303
Tel: +1-678-954-0670
Fax: +1-404-961-1892
Web: http://www.evaristesys.com/

On Jan 28, 2012, at 3:16 AM, Spencer Thomason <spencer at 5ninesolutions.com> wrote:

> Hello all,
> I'm currently reworking our routing scripts in preparation for an upgrade to 3.2.2 from 3.1.5.  I'm taking this time to perform a general cleanup an optimization.  In regard to selects vs PVs, is there any reason to choose one or the other select over a PV when both exist for the needed data?
> 
> Thanks,
> Spencer
> 
> 
> 
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