Got it.
I thought min_column and max_column were indexes for the rows and not
for the columns.
Now it is clear. Thanks
jmf
On Tue, 2007-03-27 at 14:38 +0100, Dave Shield wrote:
> On 07/03/07, Joao Miguel Ferreira <[EMAIL PROTECTED]> wrote:
> > About this piece of code generated by mib2c what is the usage/meaning of
> > min_column and max_column ??
>
> 'min_column' is the column number of the first (accessible) column in the
> table, and 'max_column' is the column number of the last column.
>
> For example, sysORTable (in SNMPv2-MIB) is defined as:
>
> SysOREntry ::= SEQUENCE {
> sysORIndex INTEGER,
> sysORID OBJECT IDENTIFIER,
> sysORDescr DisplayString,
> sysORUpTime TimeStamp
> }
>
> with
> sysORID OBJECT-TYPE.... ::= { sysOREntry 2 }
> &
> sysORUpTime OBJECT-TYPE.... ::= { sysOREntry 4 }
>
> so min_column=2 and max_column=4
>
> (Note that sysORIndex is defined as "not-accessible", which
> is why min_column isn't 1)
>
>
> > This is part of the table initialization code.... Am I compromising the
> > future possible growth of the table or this is only for initialization
> > purposes ?
>
> This doesn't affect the number of *rows* in the table - just the
> number of columns. If the definition of the table changes, then
> you'd have to update these values. But you'd need to add code
> to handle the new columns anyway.
>
>
> > Put it another way: if I simply do not initialize it (ex: max=0, min=0)
> > would the subsequent procedures work ?
>
> No.
> The agent wouldn't know which columns were valid.
>
> Dave
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