Question

In my application i need a unique value for a specific field in the database. This field has to be of type Integer. So i was wondering if it is possible to use a sequence for the field? And how to i implement that in my GORM domain class?

Answer 1

See the grails doc on how to use sequences. Depending on the source of the sequence ( (oracle/postgres) sequence number generator type / database table)

static mapping = {
    intField1 generator:'sequence', params:[sequence:'sequence_name']
    intField2 generator:'sequence', params:[table: 'hi_value', column: 'next_value', max_lo: 100]
}