CODEWITHSUNDEEP
grailsgrails-orm
David B
David B

Reputation: 33

Is it possible to save a specific id for a grails domain object?

I am in the process of trying to copy the properties of one domain object to another similar domain object (Basically moving retired data from an archive collection to an active one). However, when I try to save with a manually inputed id the save will not actually put anything into the collection.

def item = new Item(style: "631459")
item.id = new ObjectId("537da62d770359c2fb4668e2")
item.save(flush: true, validate: false, failOnError:true)

The failOnError does not throw an exception and it seems like the save works correctly. Also if I println on the item.save it will return the correct id. Am I wrong in thinking that you can put a specific id on a domain object?

Upvotes: 2

Views: 1385

Answers (2)

juandiegoh
juandiegoh

Reputation: 378

You can set the id generator as 'assigned' so then you can put the value that you want and is going to be saved with that value.

class Item {

...

    static mapping = {
        id generator:'assigned'
    }
}

Upvotes: 4

mohsenmadi
mohsenmadi

Reputation: 2377

The identifier id is a somewhat sensitive name to use. If you check your dbconsole, you will find that GORM has provided one for you even without asking. When you use that name for yourself, confusion happens. Grails will respect you with the println stuff, but GORM has the last word on how id gets initialized and stored, and it is not listening to you then.

You can rename the id to something else like you see in this post and maybe then you can use the name id for yourself. Otherwise, I suggest leaving id to GORM, and have your own identifier for your old keys. You won't have problems retrieving data anyway and there won't be performance issues.

Upvotes: 2

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