CODEWITHSUNDEEP
hibernategrailsgrails-orm
k-deux
k-deux

Reputation: 493

Grails update references

How can I add a Object to a relation and persist it ?

if i do something like that

registrationInstance.addToActionType(id:id)

I get an exception 

Unique index or primary key violation: "PRIMARY_KEY_E7 ON PUBLIC.ACTION_TYPE_REGISTRATIONS(ACTION_TYPE_ID, REGISTRATION_ID)"; SQL statement: insert into action_type_registrations (action_type_id, registration_id) values (?, ?) [23001-147]

EDIT:

If I write

registrationInstance.addToActionType(ActionType.get(id))

I get the same Error, but it persists - so how can I get rid of that error?

EDIT2:

If I try to remove an object:

registrationInstance.removeFromActionType(ActionType.get(id))

I receve following error (sometimes, not allways)

Eindeutiger Index oder Primarschlüssel verletzt: "PRIMARY_KEY_E7 ON PUBLIC.ACTION_TYPE_REGISTRATIONS(ACTION_TYPE_ID, REGISTRATION_ID)" Unique index or primary key violation: "PRIMARY_KEY_E7 ON PUBLIC.ACTION_TYPE_REGISTRATIONS(ACTION_TYPE_ID, REGISTRATION_ID)"; SQL statement: update action_type_registrations set action_type_id=? where registration_id=? and action_type_idx=? [23001-147]

Upvotes: 0

Views: 239

Answers (2)

Antoine
Antoine

Reputation: 5198

You must add the object itself to the relationship:

registrationInstance.addToActionType(ActionType.load(id))
registrationInstance.save()

Upvotes: 1

Burt Beckwith
Burt Beckwith

Reputation: 75681

It looks like it's not detecting that the instance is already in the collection. Implement sensible hashCode and equals methods for ActionType so Hibernate can detect that it's already there and not try to create a duplicate record in the ACTION_TYPE_REGISTRATIONS join table.

Upvotes: 1

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