db_driverkey (public)

 db_driverkey [ -handle_p handle_p ] dbn

Defined in packages/acs-tcl/tcl/01-database-procs.tcl

Normally, a dbn is passed to this proc. Unfortunately, there are one or two cases where a proc that needs to call this one has only a db handle, not the dbn that handle came from. Therefore, they instead use -handle_p 1 and pass the db handle. Hmm, as of 2018, it seems that in most cases, db_driverkey is called with a handle.

Switches:

-handle_p (optional, defaults to "0")

Parameters:

dbn (required)

Returns:

The driverkey for use in db_* API switch statements.

Author:

Andrew Piskorski <atp@piskorski.com>

Created:

2003/04/08

Partial Call Graph (max 5 caller/called nodes):

Testcases:

create_form_with_form_instance

Source code:

    if { $handle_p } {
        #
        # Input is a handle, not a database name. Determine from the
        # handle the db-name (via the pool information)
        #
        set handle $dbn
        set pool [ns_db poolname $handle]
        set dbn $::acs::db_pool_to_dbn($pool)
    }

    if { ![nsv_get db_driverkey $dbn driverkey] } {
        #
        # This ASSUMES that any overriding of this default value via
        # "ns_param driverkey_dbn" has already been done:
        #
        if { $handle_p } {
            set driver [ns_db driver $handle]
        } else {
            db_with_handle -dbn $dbn handle {
                set driver [ns_db driver $handle]
            }
        }

        # These are the default driverkey values, if they are not set
        # in the config file:

        if { [string match "Oracle*" $driver] } {
            set driverkey {oracle}
        } elseif { $driver eq "PostgreSQL" } {
            set driverkey "postgresql"
        } elseif { $driver eq "ODBC" } {
            set driverkey "nsodbc"
        } else {
            set driverkey {}
            ns_log Error "db_driverkey: Unknown driver '$driver'."
        }

        nsv_set db_driverkey $dbn $driverkey
    }
    return $driverkey

XQL Not present:

Generic, PostgreSQL, Oracle