public static void CarSnapshotRollback(IObjectContainer db)
{
IObjectSet result = db.QueryByExample(new Car("BMW"));
Car car = (Car)result.Next();
car.Snapshot();
db.Store(car);
db.Rollback();
Console.WriteLine(car);
}
public static void CarSnapshotRollbackRefresh(IObjectContainer db)
{
var result = db.QueryByExample(new Car("BMW"));
Car car = result.Next();
car.Snapshot();
db.Store(car);
db.Rollback();
db.Ext().Refresh(car, int.MaxValue);
Console.WriteLine(car);
}
public static void TakeManySnapshots()
{
IEmbeddedConfiguration config = Db4oEmbedded.NewConfiguration();
config.Common.ObjectClass(typeof(Car)).CascadeOnUpdate(true);
using (IObjectContainer db = Db4oEmbedded.OpenFile(config, YapFileName))
{
IObjectSet result = db.QueryByExample(typeof(Car));
Car car = (Car)result.Next();
for (int i = 0; i < 5; i++)
{
car.Snapshot();
}
db.Store(car);
}
}
