Getting mapping from domain class in Grails

get-domain-mapping-in-grails.groovy

class Person {
  Long id
  String name
  static mapping = {
    table name: 'PERSON'
    id column: 'PRS_ID'
    name column: 'PRS_NAME'
  }
}

/* 
* You can manipulate and collect mapping entries as you wish.
* Here, i reversed mapping entries of Person class.
* Output:
*   ['PRS_ID': 'id', 'PRS_NAME': 'name']
*/
def collectedMap = new GrailsDomainBinder().getMapping(Person).columns.collectEntries { key, value ->
  [value.columns.get(0).name, key]
}