As Chuck mentioned, EOs are re-faulted based upon the fetchTimestampLag. But I believe that snapshots are always weak references and therefore subject to being garbage collected at any time.
Presumably setRetainsRegisteredObjects(true) changes this to a regular reference. Karl On 2012-09-06, at 12:46 AM, John Pollard <j...@pollardweb.com> wrote: > This problem goes away if I call setRetainsRegisteredObjects(true) on the EC > in question. > So presumably garbage collection was somehow resulting in the relationships > turning into faults. > Perhaps I should have said that the call manifests itself between separate > requests coming in and that I am looking to cache EOs beyond a single request. > I know that retaining all registered objects in the EC can lead to > memory-hungry apps, so I'll monitor to see if that is a problem, but at lease > I finally know where the root of the problem lies. > > On 5 Sep 2012, at 19:37, Chuck Hill wrote: > >> Something is not what you think it is. >> >> This trace: >> >>>>>> at mp.eo.StockItem.turnIntoFault(StockItem.java:1714) >>>>>> at >>>>>> com.webobjects.eocontrol.EOFaultHandler.makeObjectIntoFault(EOFaultHandler.java:161) >>>>>> at >>>>>> com.webobjects.eoaccess.EODatabaseContext._turnToFaultGidEditingContextIsComplete(EODatabaseContext.java:3363) >>>>>> at >>>>>> com.webobjects.eoaccess.EODatabaseContext.faultForGlobalID(EODatabaseContext.java:3397) >>>>>> at >>>>>> com.webobjects.eocontrol.EOObjectStoreCoordinator.faultForGlobalID(EOObjectStoreCoordinator.java:537) >>>>>> at >>>>>> com.webobjects.eocontrol.EOEditingContext.faultForGlobalID(EOEditingContext.java:3608) >> >> Means that EOEditingContext.faultForGlobalID did NOT find an EO for that >> global ID in that editing context. A few possibilities: >> >> - this StockItem is not one of the ones you have pre-loaded >> - you pre-loaded them in a different editing context >> - something told the EC to forgetObject() after you pre-loaded them >> >> >> Chuck >> >> >> >> On 2012-09-05, at 10:30 AM, John Pollard wrote: >> >>> There is a to-one from WebPage to StockItem and no other direct >>> relationship to StockItem. >>> >>> On 5 Sep 2012, at 18:20, Chuck Hill wrote: >>> >>>> Is there a to-one from WebPage to StockItem? Or is it a to-many? >>>> >>>> Chuck >>>> >>>> >>>> On 2012-09-05, at 10:01 AM, John Pollard wrote: >>>> >>>>> Hi Chuck, >>>>> The count is actually of the WebPage.childWebPages() array not on >>>>> stockItems at all which is why I was puzzled that a >>>>> StockItem.turnIntoFault() was being triggered. >>>>> I confirmed that they are all in the same EC by logging the hashCode() of >>>>> the EC (I assume that is valid) >>>>> Thanks for your reply >>>>> John >>>>> >>>>> On 5 Sep 2012, at 17:48, Chuck Hill wrote: >>>>> >>>>>> Hi John, >>>>>> >>>>>> Are StockItems "carefully pre-loaded" into the same EC as WebPages? If >>>>>> not, you are likely running into the EC's fetch timestamp lag. It looks >>>>>> like you are doing a count of StockItem at at >>>>>> mp.eo.WebPage.getDescendantWebPages(WebPage.java:1410) and this is >>>>>> causing the to-many to be faulted. >>>>>> >>>>>> >>>>>> Chuck >>>>>> >>>>>> >>>>>> >>>>>> On 2012-09-05, at 9:21 AM, John Pollard wrote: >>>>>> >>>>>>> Hi WO list, >>>>>>> >>>>>>> The firing of a fault on EOs of one type is causing EOs of another type >>>>>>> be turned into faults... is that expected? >>>>>>> >>>>>>> I have a WebPage eo with a to-many relationship called childWebPages >>>>>>> (returns an array of WebPage objects) >>>>>>> >>>>>>> When I access this array recursively in getDescendantWebPages()...see >>>>>>> stack trace below, a totally different class of object is turned into a >>>>>>> fault StockItem, see top line of stack trace. >>>>>>> >>>>>>> I don't want EOF to turn my carefully pre-loaded StockItems back into >>>>>>> faults! >>>>>>> >>>>>>> The two EOs are related via a join table. >>>>>>> >>>>>>> This is causing performance headaches. >>>>>>> >>>>>>> at mp.eo.StockItem.turnIntoFault(StockItem.java:1714) >>>>>>> at >>>>>>> com.webobjects.eocontrol.EOFaultHandler.makeObjectIntoFault(EOFaultHandler.java:161) >>>>>>> at >>>>>>> com.webobjects.eoaccess.EODatabaseContext._turnToFaultGidEditingContextIsComplete(EODatabaseContext.java:3363) >>>>>>> at >>>>>>> com.webobjects.eoaccess.EODatabaseContext.faultForGlobalID(EODatabaseContext.java:3397) >>>>>>> at >>>>>>> com.webobjects.eocontrol.EOObjectStoreCoordinator.faultForGlobalID(EOObjectStoreCoordinator.java:537) >>>>>>> at >>>>>>> com.webobjects.eocontrol.EOEditingContext.faultForGlobalID(EOEditingContext.java:3608) >>>>>>> at >>>>>>> com.webobjects.eoaccess.EODatabaseContext._objectFaultWithSnapshotRelationshipEditingContext(EODatabaseContext.java:2361) >>>>>>> at >>>>>>> com.webobjects.eoaccess.EODatabaseContext._fireDeferredFaultWithSourceObject(EODatabaseContext.java:2401) >>>>>>> at >>>>>>> com.webobjects.eoaccess.EOAccessDeferredFaultHandler.createFaultForDeferredFault(EOAccessDeferredFaultHandler.java:49) >>>>>>> at >>>>>>> com.webobjects.eocontrol.EOCustomObject.willReadRelationship(EOCustomObject.java:1279) >>>>>>> at >>>>>>> com.webobjects.eocontrol._EOMutableKnownKeyDictionary$Initializer$_LazyGenericRecordBinding.valueInObject(_EOMutableKnownKeyDictionary.java:614) >>>>>>> at >>>>>>> com.webobjects.eocontrol.EOCustomObject.storedValueForKey(EOCustomObject.java:1634) >>>>>>> at >>>>>>> com.webobjects.eoaccess.EODatabaseContext.databaseOperationForObject(EODatabaseContext.java:4810) >>>>>>> at >>>>>>> com.webobjects.eoaccess.EODatabaseContext.valuesForKeys(EODatabaseContext.java:6531) >>>>>>> at >>>>>>> com.webobjects.eocontrol.EOObjectStoreCoordinator.valuesForKeys(EOObjectStoreCoordinator.java:321) >>>>>>> at >>>>>>> com.webobjects.eoaccess.EOQualifierSQLGeneration$_KeyValueQualifierSupport.schemaBasedQualifierWithRootEntity(EOQualifierSQLGeneration.java:439) >>>>>>> at >>>>>>> com.webobjects.eoaccess.EOQualifierSQLGeneration$Support._schemaBasedQualifierWithRootEntity(EOQualifierSQLGeneration.java:179) >>>>>>> at >>>>>>> com.webobjects.eoaccess.EODatabaseChannel.selectObjectsWithFetchSpecification(EODatabaseChannel.java:227) >>>>>>> at >>>>>>> com.webobjects.eoaccess.EODatabaseContext._objectsWithFetchSpecificationEditingContext(EODatabaseContext.java:3055) >>>>>>> at >>>>>>> com.webobjects.eoaccess.EODatabaseContext.objectsWithFetchSpecification(EODatabaseContext.java:3195) >>>>>>> at >>>>>>> com.webobjects.eocontrol.EOObjectStoreCoordinator.objectsWithFetchSpecification(EOObjectStoreCoordinator.java:483) >>>>>>> at >>>>>>> com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4053) >>>>>>> at >>>>>>> com.webobjects.eoaccess.EODatabaseContext.objectsForSourceGlobalID(EODatabaseContext.java:4084) >>>>>>> at >>>>>>> com.webobjects.eocontrol.EOObjectStoreCoordinator.objectsForSourceGlobalID(EOObjectStoreCoordinator.java:629) >>>>>>> at >>>>>>> com.webobjects.eocontrol.EOEditingContext.objectsForSourceGlobalID(EOEditingContext.java:3907) >>>>>>> at >>>>>>> com.webobjects.eoaccess.EODatabaseContext._fireArrayFault(EODatabaseContext.java:4245) >>>>>>> at >>>>>>> com.webobjects.eoaccess.EOAccessArrayFaultHandler.completeInitializationOfObject(EOAccessArrayFaultHandler.java:77) >>>>>>> at >>>>>>> com.webobjects.eocontrol._EOCheapCopyMutableArray.willRead(_EOCheapCopyMutableArray.java:45) >>>>>>> at >>>>>>> com.webobjects.eocontrol._EOCheapCopyMutableArray.count(_EOCheapCopyMutableArray.java:103) >>>>>>> at mp.eo.WebPage.getDescendantWebPages(WebPage.java:1410) >>>>>>> at mp.eo.WebPage.getDescendantWebPages(WebPage.java:1393) >>>>>>> at mp.eo.WebPage.getDescendantWebPages(WebPage.java:1414) >>>>>>> at mp.eo.WebPage.getDescendantWebPages(WebPage.java:1393) >>>>>>> at mp.eo.WebPage.getDescendantWebPages(WebPage.java:1414) >>>>>>> at mp.eo.WebPage.getDescendantWebPages(WebPage.java:1393) >>>>>>> at mp.eo.WebPage.getDescendantWebPages(WebPage.java:1414) >>>>>>> at mp.eo.WebSite.getAllWebPages(WebSite.java:842) >>>>>>> at mpMall.DirectAction.getWebPageById(DirectAction.java:1982) >>>>>>> at mpMall.DirectAction.viewPageAction(DirectAction.java:537) >>>>>>> >>>>>>> Many thanks, >>>>>>> John >>>>>>> _______________________________________________ >>>>>>> Do not post admin requests to the list. They will be ignored. >>>>>>> Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) >>>>>>> Help/Unsubscribe/Update your Subscription: >>>>>>> https://lists.apple.com/mailman/options/webobjects-dev/chill%40global-village.net >>>>>>> >>>>>>> This email sent to ch...@global-village.net >>>>>> >>>>>> -- >>>>>> Chuck Hill Senior Consultant / VP Development >>>>>> >>>>>> Practical WebObjects - for developers who want to increase their overall >>>>>> knowledge of WebObjects or who are trying to solve specific problems. >>>>>> http://www.global-village.net/gvc/practical_webobjects >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> Do not post admin requests to the list. They will be ignored. >>>>> Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) >>>>> Help/Unsubscribe/Update your Subscription: >>>>> https://lists.apple.com/mailman/options/webobjects-dev/chill%40global-village.net >>>>> >>>>> This email sent to ch...@global-village.net >>>> >>>> -- >>>> Chuck Hill Senior Consultant / VP Development >>>> >>>> Practical WebObjects - for developers who want to increase their overall >>>> knowledge of WebObjects or who are trying to solve specific problems. >>>> http://www.global-village.net/gvc/practical_webobjects >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>> >>> >>> _______________________________________________ >>> Do not post admin requests to the list. They will be ignored. >>> Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) >>> Help/Unsubscribe/Update your Subscription: >>> https://lists.apple.com/mailman/options/webobjects-dev/chill%40global-village.net >>> >>> This email sent to ch...@global-village.net >> >> -- >> Chuck Hill Senior Consultant / VP Development >> >> Practical WebObjects - for developers who want to increase their overall >> knowledge of WebObjects or who are trying to solve specific problems. >> http://www.global-village.net/gvc/practical_webobjects >> >> >> >> >> >> >> >> > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/webobjects-dev/kgretton%40mac.com > > This email sent to kgret...@mac.com _______________________________________________ Do not post admin requests to the list. 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