How to create criteria in groovy/grails for nested object?

Question

I need help on creating hibernate criteria for nested object. For example :

class office{
    Integer id;
    OfficeDetails cmdData ;
}

class OfficeDetails {
           


        

Answer 1

See "querying associations" under the criteria section of the user guide:

def criteria = {
  cmdData {
    region {
      eq('regionNum', regionNumber)
    }
  }
}