freeze method

Realm freeze()

Returns a frozen (immutable) snapshot of this Realm.

A frozen Realm is an immutable snapshot view of a particular version of a Realm's data. Unlike normal Realm instances, it does not live-update to reflect writes made to the Realm. Writing to a frozen Realm is not allowed, and attempting to begin a write transaction will throw an exception.

All objects and collections read from a frozen Realm will also be frozen.

Note: Keeping a large number of frozen Realms with different versions alive can have a negative impact on the file size of the underlying database.

Implementation

Realm freeze() {
  if (isFrozen) {
    return this;
  }

  return Realm._(config, handle.freeze());
}