Re: Opaque types

On Tue, May 24, 2011 at 10:56 AM, Leo Cacciari <[email protected]> wrote:
> Il 05/24/2011 04:32 PM, Fulko Hew ha scritto:
>> On Tue, May 24, 2011 at 9:55 AM, Leo Cacciari <[email protected]> wrote:
>>> Hi,
>>>  I'm writing a SNMP (sub)agent which would allow access to some
>>> application data. Data types handled by the application, and that should
>>> somehow be exposed to the SNMP world by the agent, includes the
>>> 'standard' SNMP types (e.g. 32 bits integers or [display]strings), some
>>> sub-types of those (e.g. 16 bits integers) and other types that are more
>>> difficult to map directly on SNMP types, although there is (obviously)
>>> no problem in mapping them to ASN.1 (that's the reason to have ASN.1,
>>> after all..).
>>>
>>> [...snip...]
>> Perhaps you should give us descriptions/examples of these 'other' types you have
>> before anyone passes on opinions.
> For instance, using ASN.1 syntax:
>
> Int32Sequence ::= SEQUENCE OF INTEGER
>
> or
>
> MyComposedType ::= SEQUENCE {
>                                                          status INTEGER,
>                                                          address IpAddress,
>                                                          name
> DisplayString
>                                                       }

Disclaimer: I am not an expert.
But, in my opinion I'd be building tables to contain this data with
the appropriate indexes,
or adding columns to existing tables, especially in the case of the
latter, rather than to
'bundle' it into a single item.

As for the 'sequence of integer', it is possible that this could be
replaced by BITS?
Otherwise, again, I'd look to see how these integers relate to one
another, what their
'real' function was, and they relate to other things that might
already be in a table somewhere.

In my history, I've never had to exchange a 'sequence of integers'
that wasn't better
expressed by a different design.

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