Question

Is it possible to explicitly set the id of a domain object in Grails’ Bootstrap.groovy (or anywhere, for that matter)?

I’ve tried the following:

new Foo(id: 1234, name: 'My Foo').save() 

and:

def foo = new Foo() foo.id = 1234 foo.name = 'My Foo' foo.save() 

But in both cases, when I print out the results of Foo.list() at runtime, I see that my object has been given an id of 1, or whatever the next id in the sequence is.

Edit: This is in Grails 1.0.3, and when I’m running my application in ‘dev’ with the built-in HSQL database.

Edit: chanwit has provided one good solution below. However, I was actually looking for a way to set the id without changing my domain’s id generation method. This is primarily for testing: I’d like to be able to set certain things to known id values either in my test bootstrap or setUp(), but still be able to use auto_increment or a sequence in production.

Answer 1

Yes, with manually GORM mapping:

class Foo {   String name   static mapping = {     id generator:'assigned'   } } 

and your second snippet (not the first one) will do the job (Id won’t be assigned when passing it through constructor).