On Thu, 2006-01-26 at 14:06 +0200, Michael G wrote: > Suppose i have tables that are related. For instance, one table is a > generic table of programs currently present in a video stream which > contains some common information for each program. The other table > contains a specific information regarding the program which structure > depends on the type of the program.
I would approach this by storing the data as a single (shared) list of per-row entries, containing both the common information and extra (type-specific) fields. Both tables would be registered using the cache helper, and specifying the same cache_load routine (and probably a shared 'netsnmp_cache' data structure). The handlers for each table could then select the appropriate fields from the (shared) per-row data structure. That's certainly possible with the 'table_data' and 'table_tdata' helpers. I'm not as familiar with the MfD framework as Robert is, so I'll leave him to advise you on how to address this requirement using that approach. > Can I register a handler for treating multiple tables? Not really, no. The handlers are best considered as being responsible for processing a single "chunk" of the overall OID tree. But two handlers can certainly work with a shared representation of the underlying table(s), which would give you the linkage you need. > Can I register a handler for handling a range of nodes/tables, > or a whole node tree (including the sub nodes)? Yes. netsnmp_register() will take responsibility for a whole subtree. But in that case, you'd need to do much more of the work yourself. The advantage of 'netsnmp_register_table()' (and the specialised versions of it), is that they take care of most of the generic processing - you can concentrate on the specifics of your table(s). The more general your registration, the less standard processing can be done by the Net-SNMP helpers. Dave ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 _______________________________________________ Net-snmp-coders mailing list Net-snmp-coders@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/net-snmp-coders
