Question

In my table definition, there is a column with int data type. If a value is “0”, I want jdbcTemplate update method to update this field with “NULL” instead of “0” by default.

this.jdbcTemplate.update("UPDATE GCUR_OBSERVATION "
                + "SET ObserverId = ?," + "ObservationDate = ?,"
                + "PointCuring = ?"
                + " WHERE locationId = ? AND ObservationStatus = 0",
                new Object[] { new Integer(newObservation.getObserverId()),
                        newObservation.getObservationDate(),
                        new Integer(newObservation.getLocationId()) });

The code snippet above runs well when the Point Curing is not NULL. However, how can it be stored as NULL in the database table?

Answer 1

I hope you are getting NUll Pointer Exception.

Try this

Integer locId = null;

if(newObservation.getLocationId() != null) {
 locId = new Integer(newObservation.getLocationId());
 if(locId == 0) {
   locId = null;
 }
}

And now pass locId here.

this.jdbcTemplate.update("UPDATE GCUR_OBSERVATION "
                + "SET ObserverId = ?," + "ObservationDate = ?,"
                + "PointCuring = ?"
                + " WHERE locationId = ? AND ObservationStatus = 0",
                new Object[] { new Integer(newObservation.getObserverId()),
                        newObservation.getObservationDate(),
                        locId) });