Re: ERXModelGroup(EOModelGroup).fetchSpecificationNamed(String, String)

Yes,

I had EO classes containing this:

private static SystemCommunicator COMMUNICATOR = new SystemCommunicator();

The SystemCommunicator accessed the database, using other EO classes, to 
resolve parameters it needed to configure itself (it does not in anyway 
contain/store EOs).

...and I forgot to tell that I also updated WO from 5.2.4 to 5.3.x. I'd 
say that's when my luck changed.

Thanks, /Anders

Anjo Krank wrote:
> Code would have been better but anyway: it's a very bad idea to have 
> model-accessing code in static inits (or code that is called from 
> static inits). My guess is that previously, your prototype model was 
> loaded before the main model and now isn't. If they are both in the 
> same framework then this was pur luck on your part.
>
> You should move the code from the static init to a 
> appDidFinishLaunching notification listener.
>
> Cheers, Anjo
>
> Am 25.10.2006 um 19:49 schrieb Anders Peterson:
>
>> Thanks for trying to help,
>>
>> Setting an exception breakpoint with ExceptionInInitializerError does 
>> not work. I get a NullPointerException and then the program 
>> terminates. If I set the breakpoint with a NullPointerException I get 
>> the stack trace below (copied from the eclipse debugger).
>>
>> The stack trace that is written to the console looks slightly 
>> different (what I posted before). That's where you see the 
>> ExceptionInInitializerError.
>>
>> Actually I don't understand this. I have already concluded that the 
>> real problem must occur before this point. As I said earlier 
>> something goes wrong when I call "new EOMOdel(url)" with the url to 
>> the QsdCoreData eomodel. I get the NullPointerException later when I 
>> try to access a fetch specification in an entity that's in the 
>> eomodel that failed to initialize (and therefore is not in the 
>> EOModelGroup).
>>
>> I've attached the launch configuration classpath as an tiff-file 
>> (hope that's ok).
>>
>> /Anders
>>
>> Thread [main] (Suspended (exception NullPointerException))   
>>     ERXModelGroup(EOModelGroup).fetchSpecificationNamed(String, 
>> String) line: 597   
>>     EOUtilities.objectsWithFetchSpecificationAndBindings(EOEditingContext, 
>> String, String, NSDictionary) line: 113   
>>     QCDRemoteServer.fetchInstance(EOEditingContext, NSDictionary) 
>> line: 319   
>>     SystemCommunicator(SuperCommunicator).<init>(EOEditingContext) 
>> line: 27   
>>     SystemCommunicator(SuperCommunicator).<init>() line: 23   
>>     SystemCommunicator.<init>() line: 37   
>>     QCDProfile.<clinit>() line: 678   
>>     Class<T>.forName0(String, boolean, ClassLoader) line: not 
>> available [native method]   
>>     Class<T>.forName(String) line: 164   
>>     _NSUtilities._classWithPartialName(String, boolean) line: 307   
>>     _NSUtilities.classWithName(String) line: 291   
>>     EOModel._setEntityForEntityNameClassName(Object, String, String) 
>> line: 1242   
>>     EOModel._addFakeEntityWithPropertyList(NSDictionary) line: 1280   
>>     EOModel._initWithTableOfContentsPropertyListPathURL(NSDictionary, 
>> URL) line: 1092   
>>     EOModel.<init>(URL) line: 802   
>>     ERXModelGroup.addModelWithPathURL(URL) line: 305   
>>     ERXModelGroup.loadModelsFromLoadedBundles() line: 108   
>>     ERXExtensions.defaultModelGroup() line: 82   
>>     NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: 
>> not available [native method]   
>>     NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39   
>>     DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25   
>>     Method.invoke(Object, Object...) line: 585   
>>     NSSelector._safeInvokeMethod(Method, Object, Object[]) line: 120   
>>     _NSDelegate._perform(String, Object[]) line: 225   
>>     _NSDelegate.perform(String) line: 158   
>>     EOModelGroup.defaultGroup() line: 365   
>>     EOModelGroup.modelGroupForObjectStoreCoordinator(EOObjectStoreCoordinator) 
>> line: 887   
>>     EOUtilities.modelGroup(EOEditingContext) line: 1007   
>>     EOUtilities.objectsWithFetchSpecificationAndBindings(EOEditingContext, 
>> String, String, NSDictionary) line: 112   
>>     QCDRemoteServer.fetchInstance(EOEditingContext, NSDictionary) 
>> line: 319   
>>     SystemCommunicator(SuperCommunicator).<init>(EOEditingContext) 
>> line: 27   
>>     SystemCommunicator(SuperCommunicator).<init>() line: 23   
>>     SystemCommunicator.<init>() line: 37   
>>     Application.<init>() line: 43   
>>     NativeConstructorAccessorImpl.newInstance0(Constructor, Object[]) 
>> line: not available [native method]   
>>     NativeConstructorAccessorImpl.newInstance(Object[]) line: 39   
>>     DelegatingConstructorAccessorImpl.newInstance(Object[]) line: 27   
>>     Constructor<T>.newInstance(Object...) line: 494   
>>     Class<T>.newInstance0() line: 350   
>>     Class<T>.newInstance() line: 303   
>>     WOApplication.main(String[], Class) line: 323   
>>     ERXApplication.main(String[], Class) line: 98   
>>     Application.main(String[]) line: 24   
>>
>> --http://ojalgo.org/
>>
>> Mathematics, Linear Algebra and Optimisation with Java
>> <classpath.tiff>
>


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Mathematics, Linear Algebra and Optimisation with Java