JdbcJobInstanceDao

[KristanM]

Is there any particular reason why the JdbcJobInstanceDao doesn't write nulls to the parameter columns not in use in the insertParameter method when writing them to the BATCH_JOB_PARAMS database table?

I've had to write a customised version for our DB setup and I'm using the same table structure, just wondering if I can write nulls rather than default values or if there's a gotcha waiting for me further down the line.

Thanks!