That sure looks  like a model problem.  It  could be that one of the plist 
files is damaged.  Open up the plist files for the two related entities and see 
if they contain what Entity Modeler is showing.

Have you renamed any entities or attributes?



Chuck

On Jun 26, 2011, at 5:21 PM, Fred Opims wrote:

> Hi Chuck!
> Thank you for the quick response! .
> 
> I made sure that Responsable primary Key is the Vehicule foreign Key and i 
> have validated the model. 
> 
> Here is the stack trace
> 
> Jun 26 20:17:15 TicketManagmentServer[54345] WARN  
> er.extensions.eof.ERXModelGroup  - Clearing previous class descriptions
> Jun 26 20:17:15 TicketManagmentServer[54345] WARN  
> er.extensions.eof.ERXModelGroup  - The EOModel 'erprototypes' has an empty 
> connection dictionary.
> Jun 26 20:17:15 TicketManagmentServer[54345] WARN  
> er.extensions.eof.ERXModelGroup  - The EOModel 'erprototypes' has an empty 
> connection dictionary.
> Jun 26 20:17:16 TicketManagmentServer[54345] DEBUG NSLog  - Using JDBCPlugIn 
> 'com.webobjects.jdbcadaptor.PostgresqlPlugIn' for JDBCAdaptor@2019733318
> Jun 26 20:17:16 TicketManagmentServer[54345] DEBUG NSLog  - Using JDBCPlugIn 
> 'com.webobjects.jdbcadaptor.PostgresqlPlugIn' for JDBCAdaptor@1901677475
> Jun 26 20:17:16 TicketManagmentServer[54345] DEBUG NSLog  -  connecting with 
> dictionary: {plugin = "Postgresql"; username = "postgres"; driver = 
> "org.postgresql.Driver"; password = "<password deleted for log>"; URL = 
> "jdbc:postgresql://localhost/TicketManagment"; }
> Jun 26 20:17:16 TicketManagmentServer[54345] DEBUG NSLog  - fetching JDBC 
> Info with JDBCContext@1433183189
> Jun 26 20:17:16 TicketManagmentServer[54345] DEBUG NSLog  -  connecting with 
> dictionary: {plugin = "Postgresql"; username = "postgres"; driver = 
> "org.postgresql.Driver"; password = "<password deleted for log>"; URL = 
> "jdbc:postgresql://localhost/TicketManagment"; }
> Jun 26 20:17:16 TicketManagmentServer[54345] DEBUG NSLog  -  === Begin 
> Internal Transaction
> Jun 26 20:17:16 TicketManagmentServer[54345] DEBUG NSLog  -  
> evaluateExpression: <com.webobjects.jdbcadaptor.PostgresqlExpression: "SELECT 
> t0.annee, t0.couleur, t0.immatriculation, t0.marque, t0.modele, 
> t0.numero_serie, t0.responsable_id, t0.statut_id, t0.sujet_id, t0.type FROM 
> Vehicule t0 WHERE t0.immatriculation like ?::text ESCAPE '|' ORDER BY 
> t0.immatriculation ASC" withBindings: 1:"667PTS"(immatriculation)>
> Jun 26 20:17:16 TicketManagmentServer[54345] DEBUG NSLog  - 1 row(s) processed
> Jun 26 20:17:16 TicketManagmentServer[54345] DEBUG NSLog  -  === Commit 
> Internal Transaction
> Jun 26 20:17:16 TicketManagmentServer[54345] WARN  NSLog  - 
> <com.opsoft.tms.app.DirectAction>: Exception in performActionNamed() on the 
> action "HandleNewCreatedTicket" with the message: 
> java.lang.NullPointerException
> Jun 26 20:17:16 TicketManagmentServer[54345] ERROR 
> er.directtoweb.ERD2WDirectAction  - Error with action 
> HandleNewCreatedTicket:java.lang.NullPointerException, 
> formValues:{createTicket = (""); imageData.mimetype = 
> ("application/octet-stream"); imageData = (<class 
> com.webobjects.appserver._private.WOInputStreamData (offset=0, length=768, 
> data=[60]'<', [63]'?', [120]'x', [109]'m', [108]'l', [32]' ', [118]'v', 
> [101]'e', [114]'r', [115]'s', [105]'i', [111]'o', [110]'n', [61]'=', [34]'"', 
> [49]'1', [46]'.', [48]'0', [34]'"', [32]' ', [101]'e', [110]'n', [99]'c', 
> [111]'o', [100]'d', [105]'i', [110]'n', [103]'g', [61]'=', [34]'"'...)>); 
> imageData.filename = ("ticket.plist"); }
> NullPointerException
>   at 
> com.webobjects.eoaccess.EODatabaseContext._objectFaultWithSnapshotRelationshipEditingContext(EODatabaseContext.java:2356)
>      ... skipped 1 stack elements
>   at 
> com.webobjects.eoaccess.EOAccessDeferredFaultHandler.createFaultForDeferredFault(EOAccessDeferredFaultHandler.java:49)
>   at 
> com.webobjects.eocontrol.EOCustomObject.willReadRelationship(EOCustomObject.java:1279)
>   at 
> er.extensions.eof.ERXGenericRecord.willReadRelationship(ERXGenericRecord.java:409)
>   at 
> com.webobjects.eocontrol._EOMutableKnownKeyDictionary$Initializer$_LazyGenericRecordBinding.valueInObject(_EOMutableKnownKeyDictionary.java:614)
>   at 
> er.extensions.eof.ERXGenericRecord$TouchingBinding.valueInObject(ERXGenericRecord.java:205)
>   at 
> com.webobjects.eocontrol.EOCustomObject.storedValueForKey(EOCustomObject.java:1634)
>   at com.opsoft.tms._Vehicule.responsable(_Vehicule.java:93)
>   at com.opsoft.tms.Vehicule.responsable(Vehicule.java:11)
>   at 
> com.opsoft.tms.app.DirectAction.getDictionaryFromVehicule(DirectAction.java:400)
>   at 
> com.opsoft.tms.app.DirectAction.vehiculesFromImmatriculation(DirectAction.java:380)
>   at 
> com.opsoft.tms.app.DirectAction.HandleNewCreatedTicketAction(DirectAction.java:183)
>      ... skipped 4 stack elements
>   at 
> com.webobjects.appserver.WODirectAction.performActionNamed(WODirectAction.java:144)
>   at 
> er.extensions.appserver.ERXDirectAction.performActionNamed(ERXDirectAction.java:401)
>   at 
> er.directtoweb.ERD2WDirectAction.performActionNamed(ERD2WDirectAction.java:449)
>   ... skipped 9 stack elements
> 
> 
> On Sun, Jun 26, 2011 at 8:12 PM, Chuck Hill <[email protected]> wrote:
> Hi Fred,
> 
> 
> On Jun 26, 2011, at 5:01 PM, Fred Opims wrote:
> 
> > Hi!
> > I have some problem to a to-one relationship.
> > I have an Entity with 3 properties ( color, brand, model) and one 
> > relationship Responsable,
> >
> > When i make a fetch, i'm able to access to all propeties, but i can't 
> > access to relation responsable.
> > Here is the code
> >
> >         String imm = vehicule.immatriculation();  //Access OK
> >         String marque = vehicule.marque(); //Access OK
> >         String modele = vehicule.modele(); //Access OK
> >
> > When i do
> >     Responsable resp = vehicule.responsable(); i have a 
> > _objectFaultWithSnapshotRelationshipEditingContext exception.
> 
> That sounds like you have a problem with data consistency in your database.  
> Turn on SQL logging (launch with -DEOAdaptorDebugEnabled=true).
> 
> Or your model is wrong.  Can you post the entire exception message and stack 
> trace?
> 
> You should very, very rarely need to use willRead and willReadRelationship 
> for anything. You should not be using it here.
> 
> 
> Chuck
> 
> 
> 
> >
> > In the WebObject Entreprise Objects Programming Guide, it is written that 
> > the fault is fired when the relationship's data is needed.
> >
> > But when i do the following, i still have the same 
> > _objectFaultWithSnapshotRelationshipEditingContext exception.
> >
> >         String name= vehicule.responsable().name();
> >         String firstname= vehicule.responsable().firstname();
> >
> > It is also written to call willRead() before accessing to the 
> > relationship's data.
> >
> > So i did:
> >           vehicule.willRead();
> >             String name= vehicule.responsable().name();
> >         String firstname= vehicule.responsable().firstname();
> >
> > But it doesn't work. Same exception
> >
> > After that, in Vehicule.java i did the following as suggested in the doc:
> >
> > public class Vehicule extends _Vehicule {
> >     @SuppressWarnings("unused")
> >     private static Logger log = Logger.getLogger(Vehicule.class);
> >
> >      public com.package.Responsable responsable() {
> >          willRead();
> >             return super.responsable();
> >      }
> >
> >         public static boolean usesDeferredFaultCreation() {
> >
> >             return true;
> >
> >         }
> > }
> >
> > I made sure the my model is valid and that data in the database are well 
> > set.
> >
> > Can you tell me please if i'm using willRead the right way? How can i 
> > access to this relationship?
> >
> > Thank you very much!
> >
> > Fred
> > _______________________________________________
> > Do not post admin requests to the list. They will be ignored.
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> >
> > This email sent to [email protected]
> 
> --
> Chuck Hill             Senior Consultant / VP Development
> 
> Come to WOWODC this July for unparalleled WO learning opportunities and real 
> peer to peer problem solving!  Network, socialize, and enjoy a great 
> cosmopolitan city.  See you there!  http://www.wocommunity.org/wowodc11/
> 
> 

-- 
Chuck Hill             Senior Consultant / VP Development

Come to WOWODC this July for unparalleled WO learning opportunities and real 
peer to peer problem solving!  Network, socialize, and enjoy a great 
cosmopolitan city.  See you there!  http://www.wocommunity.org/wowodc11/

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