// since you have Cayenne running, you already have an instance of ServerRuntime somewhere.. // if you are using CayenneFilter, obtaining it might look like this:
ServletContext sc = ... CayenneRuntime r = WebUtil.getCayenneRuntime(sc); // this creates a new context on every call ObjectContext c = r.getContext(); Andrus On Apr 19, 2013, at 5:08 PM, Markus Reich <[email protected]> wrote: > I tried this too, but DataContext.createDataContext() isn't available in > 3.1? how can I create a context > > > 2013/4/19 Mike Kienenberger <[email protected]> > >> If you create a second non-child data context, then it should work >> just as you desire. >> Both contexts commit to the database independent of each other. >> >> On Fri, Apr 19, 2013 at 4:14 PM, Markus Reich >> <[email protected]> wrote: >>> I tried, but it is not possible to commit data locally in a child >> context! >>> I just can commitToParent :-( >>> >>> >>> 2013/4/19 Marc A. Donis <[email protected]> >>> >>>> I think what you need is a child context. See >> CayenneRuntime.getContext(* >>>> *DataChannel <http://cayenne.apache.org/**docs/3.1/api/org/apache/** >>>> cayenne/DataChannel.html< >> http://cayenne.apache.org/docs/3.1/api/org/apache/cayenne/DataChannel.html >>>> >>>> parentChannel) >>>> >>>> >>>> >>>> On 19/4/2013 21:49, Markus Reich wrote: >>>> >>>>> Hi, >>>>> >>>>> is it possible to create a second context to make an atomic update to >> an >>>>> object not disturbing the main context? >>>>> >>>>> e.g. >>>>> in the application you can change data in a fom, there are two buttons >>>>> "save" and "revert" >>>>> by the way the user can add comments to the form, when he clicks add >>>>> comment a popup opens he can enter a text and this text should be >> saved, >>>>> but when I do a commit, the data changes in the form are also commited >> :-( >>>>> >>>>> regards >>>>> Meex >>>>> >>>>> >>>> >>> >>> >>> -- >>> *Markus Reich* >>> Moosbach 28/2 >>> 6392 St. Jakob i.H. >>> www.markusreich.at / www.meeximum.at >>> [email protected] >> > > > > -- > *Markus Reich* > Moosbach 28/2 > 6392 St. Jakob i.H. > www.markusreich.at / www.meeximum.at > [email protected]
