I've been discussing with my colleage about how to map 2 classes in GORM. It's a bit complicated, where we need to use the foreign key from one, Process, class to be the primary key for another class, State.
Code listing as follows:
Don't forget to use obj.save(insert:true), when you have a GORM mapping with version=false and generation='assigned'.
You see, life is much more easier with GORM.
Code listing as follows:
class Process implements Serializable {
String name
static hasMany = [states: State]
}
class State {
String stateId
Process process
static mapping = {
version false
id composite:['stateId','process'], generator:'assigned'
}
}
Don't forget to use obj.save(insert:true), when you have a GORM mapping with version=false and generation='assigned'.
You see, life is much more easier with GORM.
1 comment:
Thank you. It helped a lot.
I have a situation where I need to part of the composite id is itself a composite id. How do I handle that. For ex:
class Process implements Serializable {
String/long processId
String name
ParentOfProcess parentOfProcess
static hasMany = [states: State]}
id composite:['processId','parentOfProcess'], generator:'assigned'
}
How will I define the composite id for the state here?
Post a Comment