Martin, On Mon, May 3, 2010 at 7:36 AM, martin t. <mrt...@googlemail.com> wrote:
> Hi, i just wanted to ask if Transfer can handle records which are > accessed not only by itself but also by other systems of which > transfer is unaware. > Transfer has no idea what other systems are up to - so it is up to you to manage its cache. > > A simple example would be one Database which is accessed (CRUD) by a > legacy app and by an app that uses Transfer. Transfer reads records, > that are changed after the read by the other app. The Transfer Cache > and the Database are now out of sync. Does Transfer have some kind of > behavior that checks if a record has changed its state since the read > by Transfer? > No, it doesn't. You would need to clear the cache for that row manually, or have a shorter cache with Transfer. > > Antoher question: > How does Transfer handle changes by different Clients to the same > record? > E.g. two uses read a record from the DB. > The first one updates the record. > The second one updates the record that does not contain the same data > anymore which the second user originally read. > Does Transfer has any locking mechanism for records, e.g. > can't read while in use or > can't update because has changed since last read > It's a case of last one wins (pretty much like anything else). There is no concurrency checking as you would find a'la Hibernate. Mark > > -- > Before posting questions to the group please read: > > http://groups.google.com/group/transfer-dev/web/how-to-ask-support-questions-on-transfer > > Try out the new Transfer ORM Custom Google Search: > http://www.google.com/cse/home?cx=002375903941309441958:2s7wbd5ocb8 > > You received this message because you are subscribed to the Google Groups > "transfer-dev" group. > To post to this group, send email to transfer-dev@googlegroups.com > To unsubscribe from this group, send email to > transfer-dev+unsubscr...@googlegroups.com<transfer-dev%2bunsubscr...@googlegroups.com> > For more options, visit this group at > http://groups.google.com/group/transfer-dev?hl=en > -- E: mark.man...@gmail.com T: http://www.twitter.com/neurotic W: www.compoundtheory.com Hands-on ColdFusion ORM Training www.ColdFusionOrmTraining.com -- Before posting questions to the group please read: http://groups.google.com/group/transfer-dev/web/how-to-ask-support-questions-on-transfer Try out the new Transfer ORM Custom Google Search: http://www.google.com/cse/home?cx=002375903941309441958:2s7wbd5ocb8 You received this message because you are subscribed to the Google Groups "transfer-dev" group. To post to this group, send email to transfer-dev@googlegroups.com To unsubscribe from this group, send email to transfer-dev+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/transfer-dev?hl=en
