Just to close off this thread... in 1.10.0-SNAPSHOT there is built-in support for this feature... just implement Timetstampable [1]
Cheers Dan [1] http://isis.apache.org/guides/rg.html#_rg_classes_roles On 28 September 2015 at 04:01, Stephen Cameron <steve.cameron...@gmail.com> wrote: > Hi Dan, > > I tried this and its not correct, I get the open and close methods being > called over and over whenever I open and close an object in the UI. but the > jdo listener method preStore (InstanceLifecycleEvent event) never gets > called. > > I pictured open() and close() being called just once as the DOMAIN service > singleton is created by Isis and then it listens on the JDO events as each > entity goes through its lifecycle. > > I will put this aside as its not the main priority. I'll read up and > understand the jdo events to find an answer, this must be close to correct. > > > On Wed, Sep 16, 2015 at 4:02 PM, Dan Haywood <d...@haywood-associates.co.uk > > > wrote: > > > Hi Steve, > > > > Although there isn't any direct support for this, it's should be > relatively > > easy to do by using the underlying JDO API. > > > > As a quick code sketch: > > > > public interface CreateTrackingEntity { > > void setCreatedBy(String createdBy); > > void setCreatedOn(DateTime createdOn); > > } > > > > public interface ModifyTrackingEntity { > > void setModifiedBy(String username); > > void setModifiedOn(DateTime modifiedOn); > > } > > > > > > Your entity should implement one or both of the above. > > > > Then, define a service such as: > > > > @RequestScoped > > @DomainService(nature=NatureOfService.DOMAIN) > > public class UpdateableEntityServices implements > > javax.jdo.listener.StoreLifecycleListener { > > > > @PostConstruct > > public void open() { > > > > > > > isisJdoSupport.getJdoPersistenceManager().addInstanceLifecycleListener(this); > > } > > > > @PreDestroy > > public void close() { > > > > > > > isisJdoSupport.getJdoPersistenceManager().removeInstanceLifecycleListener(this); > > } > > > > @Programmatic > > public void preStore (InstanceLifecycleEvent event) { > > > > final Object pi = event.getPersistentInstance(); > > > > if(pi instanceof org.datanucleus.enhancement.Persistable) { > > boolean isPersistent = > > ((org.datanucleus.enhancement.Persistable)pi).dnIsPersistent(); > > > > if(!isPersistent) { > > if(pi instanceof CreateTrackingEntity) { > > > > ((CreateTrackingEntity)pi).setCreatedBy(container.getUserName()); > > > > ((CreateTrackingEntity)pi).setCreatedOn(clockService.nowAsDateTime()); > > } > > } else { > > if(pi instanceof ModifyTrackingEntity) { > > > > ((ModifyTrackingEntity)pi).setModifiedBy(container.getUserName()); > > > > ((ModifyTrackingEntity)pi).setModifedOn(clockService.nowAsDateTime()); > > } > > } > > } > > } > > > > @Programmatic > > public void postStore (InstanceLifecycleEvent event) { > > // no-op > > } > > > > @Inject > > private DomainObjectContainer container; > > > > @Inject > > private ClockService clockService; > > > > @Inject > > private IsisJdoSupport isisJdoSupport; > > } > > > > > > > > ~~~~~~~~~~~~ > > There is actually a ticket in JIRA for this [1], so I'll formalize this > as > > a service in Isis 1.10.0. > > > > HTH > > Dan > > > > [1] https://issues.apache.org/jira/browse/ISIS-867 > > > > > > On 16 September 2015 at 05:18, Stephen Cameron < > steve.cameron...@gmail.com > > > > > wrote: > > > > > Hi, > > > > > > Could someone please assist me in adding this capability, to automate > the > > > creation and update of values in these standard fields > > > > > > created_by > > > created_on > > > modified_by > > > modified_on > > > > > > That is I need to set the first two on creating a new object, and the > > last > > > two on modifying an object. > > > > > > Thanks > > > Steve Cameron > > > > > >
