Thanks again Dan, Just making good use of the 'poly' module/addon for my notes functionality, via a wee bit of 'editor inheritance' :)
On Wed, Sep 16, 2015 at 4:04 PM, Dan Haywood <[email protected]> wrote: > As a follow-up, here's a very similar service that's in our Neo4J demo app: > > > https://github.com/isisaddons/isis-app-neoapp/blob/master/dom/src/main/java/neoapp/dom/services/titling/TitlingService.java > > > On 16 September 2015 at 07:02, Dan Haywood <[email protected]> > 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 < > [email protected] > > > 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 > >> > > > > >
