Re^3: Import constants?

Try something like

use DBIx::Log4perl qw(:masks);

$DBIx::Log4perl::LogMask = DBIX_L4P_LOG_OUTPUT | DBIX_L4P_LOG_INPUT;
[download]

The values of the constants represent individual bits being set, i.e.

                            (binary)
DBIX_L4P_LOG_INPUT     1    00000001
DBIX_L4P_LOG_OUTPUT    2    00000010
[download]

Each bit activates a certain functionality. You can combine them using bitwise or (|), e.g.

    00000001
    00000010
    --------
    00000011
[download]

The resulting value has all bits set which were set in any of the or'ed input values.