Grails Map domain class column name problems - grails

Question

I have a MS SQL DB (which I can't change) with 3 tables :
contact
id, name, number
c_group
id,name,email
contact_group
id, contact_id, group_id
In Grails I have 3 domain classes :
class Cgroup {
String name
String email
static constraints = {
}
static mapping = {
table name: "c_group"
version false
}
}
class Contact {
String name
String number
static constraints = {
name nullable:false
}
static mapping = {
version false
}
}
class Contact_group {
Cgroup cgroup
Contact contact
static constraints = {
}
static mapping = {
version false
cgroup_id column: "c_group_id", sqlType: "int"
}
}
I'm trying to create a list using :-
def contactInstance = Contact.get(id) //I have previously got the id
List userGroupList = Contact_group.createCriteria().list(params) {
eq("contact", contactInstance)
}
And it is throwing an error
Invalid column name 'cgroup_id'.. Stacktrace follows:
As you can see, I'm trying to map the correct column name (in the Contact_group domain class) as the table has been renamed from group to c_group in the DB, and just to complicate matters for some reason I decided to call the domain class Cgroup in my Grails app. (I can change this if needs be)
So, I'm now in a bit of a muddle about how best to create the list. Any suggestions or pointers?

Answer 1

In your mapping you should point to the class property (cgroup_id should be cgroup, since that is what you named it in your domain.)
Also, your column name in your table is id not c_group_id so you should set the column as id.
static mapping = {
version false
table name: "contact_group"
cgroup column: "id", sqlType: "int"
}