Hi all, This probably does not have any direct bearing on this discussion, but I have converted all Isis date / time variables to (at their core) use Joda time instead of Java time classes... the core Joda time property might not be exposed, though.
Regards, Kevin On 18 Sep 2012 at 15:38, Jeroen van der Wal wrote: > Hi Minto, > > 1. UUID is not persisted by default but will be if you mark it with > @Persistent. Don't know from the top of my head if that's also the case for > the applib.DateTime. As an alternative you can use org.joda.time.DateTime > (which also must be annotated with @Persistent). See the Datanucleus > documentation on Java types[1] for more information. > > 2. Collections should be marked with > @Persistent(mappedBy="<parent class>") for a 1-N relationship. Add an > additional @Join to create a separate join table. Again, Datanucleus > provides loads of documentation on this topic [2]. > > Hope this helps. > > Jeroen > > [1] http://www.datanucleus.org/products/datanucleus/jdo/types.html > [2] > http://www.datanucleus.org/products/datanucleus/jdo/orm/one_to_many_set.html > > > > > > -- > Jeroen van der Wal > Stromboli b.v. > +31 655 874050 > > > On Tue, Sep 18, 2012 at 2:35 PM, <[email protected]> wrote: > > > Hi folks, > > > > I am sort of stuck when using the JDO object store. I basically have 2 > > issues that I need to resolve. > > > > Issue 1: UUID and DateTime are not stored > > ------------------------------**------------ > > When creating a new Report (without any statuses) the timestamp and uuid > > are automatically generated. So on initial create there are no edit fields > > for these 2 properties as expected. Pressing 'Ok' stores the information in > > the database and shows the details view where both fields are shown with > > proper data. > > However when retrieving the same record from the database both these > > fields are shown empty. > > > > What could have caused this behaviour (where do I have to look)? > > Do I have to do something special to get these values to be stored as well? > > > > Issue 2: Statusses are not attached to report > > ------------------------------**--------------- > > I have troubles adding a status to the report. When looking in the > > database I find tables for both Report and Status. But I can not find any > > relation between both tables. > > > > I am probably overlooking something but I can't figure out what? > > > > Model: > > ------ > > class Report { > > UUID uuid; > > DateTime timestamp // Isis DateTime > > String reporter; > > String reason; > > List<Status> statuses; > > } > > > > class Status { > > DateTime timestamp // Isis DateTime > > String remark; > > Integer statusValue; > > } > > > > - For UUID I created a ValueSemanticsProvider. The value is shown properly > > on screen. > > - The ReportRepository contains methods for creating a new Report and > > searching for reports. > > - Statuses are created through Report.addStatus() looking something like > > this: > > > > public void addStatus( @Named("Partij") Integer partij, > > @Named("Duider") String duider, > > @Named("Status") Integer status, > > @Named("Toelichting") String toelichting) { > > final Status statusObject = newTransientInstance(Status.**class); > > statusObject.set... > > statuses.add(statusObject); // Shouldn't 'this' be saved as well? > > persist(statusObject); > > } > > > > > > Environment: > > ------------ > > 0.3.1-SNAPSHOT > > JDO objectstore on postgresql > > Html viewer > > > > Any help is greatly appreciated. > > > > Regards, > > > > Minto
