Re: Obtain the number of instances in a table

Thanks,



Finally the max entry is not really needed for validation.  The following
code block (check if table entry exists ) will validate the entry.



    case MODE_SET_RESERVE1:
        for (request=requests; request; request=request->next) {
            table_entry = (struct mpbcRMHOTMTable_entry *)
                              netsnmp_tdata_extract_entry(request);
            table_info  =     netsnmp_extract_table_info( request);

*         /* check if table entry exists */
         if (! table_entry)
           {
           snmp_log(LOG_ERR, "Error table entry not existing\n");
           netsnmp_set_request_error( reqinfo, request,   SNMP_NOSUCHOBJECT
);
             continue;
         } *
          (...)

Francois



One more question,

2012/3/20 Dave Shield <[email protected]>

> On 20 March 2012 16:23, Francois Bouchard <[email protected]>
> wrote:
> > Is there also a way to known the table length (in number of rows) ?
>
> In general, no.
>
> Depending on how the table is represented internally, the agent may
> not have access to this information at all  (e.g. if you're using the
> iterator approach and pulling the data from some external source).
>
> If you've got an internally cached version of the table, then that
> information is clearly available, but how you calculate it will depend
> on how the table is stored.
>
> Probably the simplest approach, particularly if you're using the cache
> helper, would be for the cache load routine to count the number of
> rows as it loads the table, and store this information in a file-scoped
> variable.
>
> Dave
>

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