It can be useful in some cases—one example is if you want to be able to pass objects around in an API without triggering a DB fetch unless they are actually used.
Cheers, - hugi > On 15. feb. 2017, at 15:28, Amedeo Mantica <amedeomant...@me.com> wrote: > > no worries, but I cannot understand your goal, why do you want to get the > fault ? > >> On 15 Feb 2017, at 16:25, Hugi Thordarson <h...@karlmenn.is> wrote: >> >> Thanks Ken, but the immediate fetch performed by Cayenne.objectForPk is >> precisely what I’d like to avoid. >> >> Cheers, >> - hugi >> >> S: Amedeo, sorry about calling you “Amadeo” in my last post. I have been >> properly lambasted. >> >> >>> On 15. feb. 2017, at 15:20, Ken Anderson <ken.ander...@amphorainc.com> >>> wrote: >>> >>> I do this: >>> >>> dataObject = (DataObject) Cayenne.objectForPK(getObjectContext(), >>> MyEntity.class, oid); >>> >>> But it will do the fetch if it’s not already in cache. >>> >>> Ken >>> >>> Ken Anderson >>> CTO Amphora, Inc. >>> Mobile: +1 914 262 8540 >>> >>> >>> >>> www.amphorainc.com <http://www.amphorainc.com/> >>> >>> >>> >>> >>> On 2/15/17, 9:59 AM, "Hugi Thordarson" <h...@karlmenn.is> wrote: >>> >>> Thanks Amadeo, but I ended up creating a method that looks like this. It >>> would be nice to get some feedback on it, if I’m violating any Cayenne >>> Commandments. >>> >>> /** >>> * @return An existing object or fault if registered with the OC, >>> otherwise creates a new hollow object based on the given ObjectId. >>> */ >>> public static Persistent faultForObjectId( ObjectContext oc, ObjectId >>> objectId ) { >>> Persistent object = (Persistent) oc.getGraphManager().getNode( objectId ); >>> >>> if( object == null ) { >>> ClassDescriptor descriptor = >>> oc.getEntityResolver().getClassDescriptor(objectId.getEntityName()); >>> >>> object = (Persistent) descriptor.createObject(); >>> >>> object.setPersistenceState(PersistenceState.HOLLOW); >>> object.setObjectContext(oc); >>> object.setObjectId(objectId); >>> >>> oc.getGraphManager().registerNode(objectId, object); >>> } >>> >>> return object; >>> } >>> >>> Cheers, >>> - hugi >>> >>> >>>> On 15. feb. 2017, at 14:41, Amedeo Mantica <amedeomant...@me.com> wrote: >>>> >>>> may be you want invalidateObject ? >>>> >>>>> On 15 Feb 2017, at 14:15, Hugi Thordarson <h...@karlmenn.is> wrote: >>>>> >>>>> Hi all, >>>>> I need to get a fault for an ObjectId from an ObjectContext. How would I >>>>> do this? >>>>> >>>>> I don’t see any public API for this—the implementation of createFault in >>>>> CayenneContext seems to get me halfway there, but it will not return an >>>>> existing fault, only create new ones. >>>>> >>>>> Cheers, >>>>> - hugi >>>> >>> >>> >>> >>> Confidentiality Notice: This e-mail and accompanying documents contain >>> confidential information intended for a specific individual and purpose. >>> This e-mailed information is private and protected by law. If you are not >>> the intended recipient, you are hereby notified that any disclosure, >>> copying, or distribution, or the taking of any action based on the contents >>> of this information, is strictly prohibited. >> >
