Check if a row with the values contained in the array referenced by pvbs and of size sz can be set active (in service). This member function of a table with snmpRowStatus object is called whenever someone tries to set the table´s row status to rowActive using a SNMP SET request. MibTable´s ready_for_service member function checks only if all required columns of a row are set. Overload this function if your MibTable object needs a more clever check.
If the table has a fixed index length of one return the next free index value, that can be used to create an new row. This can be used to support (following the SMIv2 row status textual convention) managed objects that give a manager a hint for the next index value which can be used for a new row in a particular SNMP table.