i have a question fin the same topic i'm doing session per request in a web app and noticed that when i re-attach my model to the new session for a new request the dirty checking isn't working properly (it updates everything) and also noticed that in the interceptor, in the find dirty method, the "previousState" comes empty
so is the change tracking is infact only within an existing session or am i missing something? and how can this be resolved? On Tue, Jun 22, 2010 at 7:35 PM, Oskar Berggren <[email protected]>wrote: > This is the way I understand it: NH keeps an in-memory-table of the > property values as fetched from the database. Dirty tracking compares > the current property values of tracked objects with the "fetched > state" as found in the "in-memory-table". This does not require > proxies. > > The proxies are there to represent objects that may not yet be loaded > from the DB, but referenced by objects that _are_ loaded. The proxy > will detect an attempt to access it, and then go fetch the true object > from the database. > > Since Get()'s single purpose is to load an object, no proxy is > necessary. Load() will, however, create a proxy. > > /Oskar > > > > 2010/6/22 Joe <[email protected]>: > > Hi All, > > > > I am a bit confused on what session.Get is doing. I always thought > > that Get would return a proxy and that along with the session is how > > change tracking is done. > > > > When I get an object I don't see that a proxy returned, however I do > > see it on Session.Load and on Lazy Loaded associations. > > > > I set dynamic-update = true on the object and still did not get a > > proxy. > > > > So I assume my understanding of session.Get is wrong. > > > > Can anyone provide a bit more insight on how change tracking works? Is > > change tracking only done on the session? How is it tracking changes > > without a proxy? > > > > Thanks in advance, > > > > Joe > > > > -- > > You received this message because you are subscribed to the Google Groups > "nhusers" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > [email protected]<nhusers%[email protected]> > . > > For more options, visit this group at > http://groups.google.com/group/nhusers?hl=en. > > > > > > -- > You received this message because you are subscribed to the Google Groups > "nhusers" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<nhusers%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/nhusers?hl=en. > > -- You received this message because you are subscribed to the Google Groups "nhusers" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nhusers?hl=en.
