how to aggregate values for all columns in a table row

[Frank Fock]

Hi Dave,

I would recommend subclassing MibTable and overwriting
MibTable::update to populate the rows in the table from
your backing storage and at least
MibTable::commit_set_request. In that method you will
first call the super class' commit_set_request and then
you will check if you have processed the last subrequest
(of the SET request)  related to the table. Then you can
encode/send the whole row to the backend server.

Hope this helps.

Best regards,
Frank

Dave Mason wrote:
> Hi,
> If anyone has a lot of experience with tables, I could use a bit of 
> advice.  Our system currently only has scalar data in the MIBs.  The 
> agent exhanges data with the backend server on a per-object basis.  That 
> is, each object is individually linked to another object in the backend. 
> We are now considering the addition of tabular data to a MIB.  To avoid 
> adding a new interface to the backend to index into a table, I would 
> like to aggregate all the object values of a row into one OCTET STRING 
> and pass that to the backend.  Each row could be treated as an 
> individual object, and only the affected routine in the server would 
> need to parse out the columnar values.
> 
> My question - is there a "hook" or place in the agent++ classes where I 
> can grab a whole row at once?  If the manager does a Set, I need to set 
> the columnar objects as before, but before I exit I need to gather all 
> the columnar values, concatenate them into one octet string, and pass 
> that to the backend.  Likewise, for a Get, I need to read the row object 
> from the server, parse and insert the values into the columnar objects, 
> then process as usual.  I implemented our existing scalars with a 
> subclass of MibLeaf that interacts with the server.  Maybe I can 
> subclass MibTableRow?  Even if I can, I'm not sure how I would have the 
> toolkit use that class.
> 
> Thanks in advance for any suggestions,
> Dave
> 
> 
>