thx hmm, where can I find it, is it part of Spring?
> -------- Original-Nachricht -------- > Datum: Tue, 30 May 2006 18:36:06 +0800 > Von: Lixin Chu <[EMAIL PROTECTED]> > An: Struts Users Mailing List <user@struts.apache.org> > Betreff: Re: Re: How to lock the access of methods within an action? > 
> i think transaction manager will take care of this. > > On 5/30/06, Julian Tillmann <[EMAIL PROTECTED]> wrote: > > > > Thanks a lot for your answer! > > > > My thinking behind is the application level! > > > > I'm not sure but the goal is (my hope..)to solve > > > > this problem using aspect oriented programming or Spring > > > > although I'm not very aware of it. > > > > For example it would be nice to have one central configuration there you > > > > can say: > > > > this method -max-users 1- > > > > rule: throw error …. > > > > Should be done then a second users wants access to the method. > > > > Can you help me? > > > > Thanks a lot! > > > >> >-------- Original-Nachricht -------- > > >Datum: Tue, 30 May 2006 10:55:17 +0200 > > >Von: The Jasper <[EMAIL PROTECTED]> > > >An: Struts Users Mailing List <user@struts.apache.org> > > >Betreff: Re: How to lock the access of methods within an action? > > >
> Hi, > > > > > > this sounds like a common database problem. You might want to consider > > > some kind of pessimistic locking. Basically you lock the object when > > > you start editing and prevent all access to it for the duration of the > > > lock. You could also do an optimistic lock which means that when you > > > change an object it will only be committed if the object hasn't > > > changed between the time you got your lock and the time you want to > > > commit it. This doens't prevent you from having done unnecessary work > > > however. Most db's support optimistic locking, but not pessimistic > > > locking. > > > > > > If you want to use this at the application level you will have to do > > > it yourself. You could put a variable somewhere to track wether an > > > object is being edited and base access restrictions off of that. > > > However you have to be very carefull about making sure you don't get > > > any deadlock or race conditions. > > > > > > I suggest you delve into database world and read about how other > > > people have solved this problem. > > > > > > mvg, > > > Jasper > > > > > > On 5/30/06, Julian Tillmann <[EMAIL PROTECTED]> wrote: > > > > Hello everyone, > > > > > > > >>> Within our struts web application in which we have edit-actions > > within > > > a user can be busy editing data in the form for several minutes. > > > > > > > > The problem is, if another user is also editing the data at the same > > > time, one of the is eventually going to overwrite the changes of the > > other and > > > the other will have worked completely in vain. So my question would be > > > whether there's some way to prevent this from happening, some kind of > > "lock > > > down" method for edit-actions? I think this problem is not uncommon, > can > > > someone give me a tip? > > > > > > > >>> thanks in advance > > > > Julian > > > > > > > > -- > > > > > > > >> Bis zu 70% Ihrer Onlinekosten sparen: GMX SmartSurfer! > > > > Kostenlos downloaden: http://www.gmx.net/de/go/smartsurfer > > > > > > > >> > --------------------------------------------------------------------- > > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > >--------------------------------------------------------------------- > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > -- > > > >> Bis zu 70% Ihrer Onlinekosten sparen: GMX SmartSurfer! > > Kostenlos downloaden: http://www.gmx.net/de/go/smartsurfer > > > >> --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > -- Bis zu 70% Ihrer Onlinekosten sparen: GMX SmartSurfer! Kostenlos downloaden: http://www.gmx.net/de/go/smartsurfer --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
