On Jan 4, 2010, at 4:39 PM, Chuck Hill wrote:
> On Jan 4, 2010, at 4:30 PM, Tim Worman wrote:
>> On Jan 4, 2010, at 4:00 PM, David Avendasora wrote:
>>> On Jan 4, 2010, at 6:42 PM, Tim Worman wrote:
>>>> On Jan 4, 2010, at 3:27 PM, Chuck Hill wrote:
>>>>> On Jan 4, 2010, at 3:13 PM, Tim Worman wrote:
>>>>>
>>>>>> Is it pretty much a certainty that the error I'm experiencing is caused
>>>>>> by a problem in my models? This problem is a show stopper for me right
>>>>>> now. Just for refresher, the error is:
>>>>>>
>>>>>> Error: java.lang.IllegalStateException: The object with globalID
>>>>>> _EOIntegralKeyGlobalID[Timesheet (java.lang.Long)10253] could not be
>>>>>> found in the database. This could be result of a referential integrity
>>>>>> problem with the database. An empty fault could not be created because
>>>>>> the object's class could not be determined (e.g. the GID is temporary or
>>>>>> it is for an abstract entity)
>>>>>
>>>>> Does a Timesheet with a 10253 actually exist in the database? Is
>>>>> Timesheet in an inheritance hierarchy? If so, check very, very carefully
>>>>> for a duplicated PK.
>>>>
>>>> Timesheet is in an inheritance hierarchy. From the original post, this is
>>>> how Timesheet is modeled:
>>>>
>>>> Timesheet (abstract parent) <-----------------< TimeEntry (just a time
>>>> entry on a timesheet)
>>>> TimesheetExempt (child)
>>>> TimesheetNonExempt(child)
>>>>
>>>> Yes, there is a Timesheet with timesheet_id=10253. There are no Timesheet
>>>> with duplicate timesheet_id. The error is thrown when
>>>> TimeEntry.timesheet() is called.
>>>
>>> What is the restricting qualifier on each Timesheet entity?
>>>
>>> Dave
>>
>> Timesheet is abstract and does not have a restricting qualifier.
>
> And that, IIRC, is your problem. Add one that matches nothing.
Ya know - I'm feeling some deja vu about this. I probably am just ridiculous
enough to reach a similar problem twice and have a conversation with you about
it. Sorry if that's the case. Anyway, is this what you're suggesting?
TimesheetAbstract (no restricting qual)
TimesheetGeneric (1=0 or some such - I think I may have tried that qual before
and it didn't work)
TimesheetExempt (isExempt=1)
TimesheetNonExempt (isExempt=0)
>> The entity has an attribute 'isExempt' which is boolean and modeled using
>> the toString approach. So, 'true' and 'false' are being stored in the
>> database. My restricting qualifiers for the child entities is as follows:
>>
>> TimesheetExempt: 'isExempt=1'
>> TimesheetNonExempt: 'isExempt=0'
>>
>> Maybe I would be better off not using a boolean attribute and instead have a
>> string flag of with values of 'E' and 'N?' Then I could put a cover method
>> Timesheet.isExempt() to return the boolean.
>
> Can Timesheets ever change from Exempt to Non-Exempt? Where is Kieran to
> tell you to use the Role pattern for this? Kieran? Hello?
No, they can't. A Timesheet is either exempt or non-exempt because it belongs
to a Job that is either exempt or non-exempt. That status can't change for a
job or a timesheet so I'm guaranteed safe to model it if I can get it working.
> I think the best practices for restricting values are:
> 1. Don't try to be clever. Use E and N.
OK, I'm going to try and re-model it like that and see if it makes a difference.
> 2. Don't use the restricting value for anything else. Ever.
> public boolean isExempt() { return
> TimesheetExempt.ENTITY_NAME.equals(entityName()));
> or add another column, or something.
OK, thanks for that - I would not have done that for sure. :-)
Tim
> Chuck
>>
>> Tim
>>
>>>>
>>>> Tim
>>>>
>>>>> Chuck
>>>>>
>>>>>
>>>>>>
>>>>>> I've tested the equality of the connection dictionaries of the models
>>>>>> and they are equal.
>>>>>>
>>>>>> Tim Worman
>>>>>> UCLA GSE&IS
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Dec 31, 2009, at 12:36 AM, Tim Worman wrote:
>>>>>>
>>>>>>> On Dec 30, 2009, at 3:18 AM, David Avendasora wrote:
>>>>>>>
>>>>>>>>
>>>>>>>> On Dec 29, 2009, at 9:46 PM, Tim Worman wrote:
>>>>>>>>
>>>>>>>>> OK, so, I've reviewed all the prototypes in use, data types, etc. I
>>>>>>>>> did find some areas where my prototypes were messed up so it was
>>>>>>>>> worth it to go through it all. The fk and pk both are long values.
>>>>>>>>>
>>>>>>>>> But I'm still getting the same error. This solution also doesn't
>>>>>>>>> cross databases. It does crosses models at this point. But the
>>>>>>>>> TimeEntry and Timesheet entities are in the same model.
>>>>>>>>
>>>>>>>> If TimeEntry and Timesheet are in the same model, what crosses models?
>>>>>>>> The inheritance hierarchy? What type of Inheritance are you using?
>>>>>>>>
>>>>>>>> If you have two models that point to the same database you have to be
>>>>>>>> very careful to make sure that the connection dictionaries of the two
>>>>>>>> models are EXACTLY IDENTICAL (yelling intended). This is very, very
>>>>>>>> important. Otherwise they will likely have different
>>>>>>>> EODatabaseContexts which can cause all manor of EOF confusion when it
>>>>>>>> comes to assigning keys.
>>>>>>>>
>>>>>>>> Read this thread from way back in 2006 where Mike Schrag seemed to
>>>>>>>> have a similar problem (start at the beginning):
>>>>>>>> http://lists.apple.com/archives/webobjects-dev//2006/May/msg00530.html
>>>>>>>
>>>>>>> Thanks Dave. But I still don't have a solution. I tested all the models
>>>>>>> that refer to the same database. I'm testing the equality of the
>>>>>>> connection dictionaries at app launch and they all pass the
>>>>>>> connectionDictionary().equals() test. There is another JNDI model that
>>>>>>> obviously refers to an LDAP data source and necessarily the connection
>>>>>>> dictionary to that is different.
>>>>>>>
>>>>>>> Any other ideas about what is causing the problem or troubleshooting
>>>>>>> techniques you'd employ here? Obviously I'm doing something wrong?
>>>>>>>
>>>>>>> Tim
>>>>>>>
>>>>>>>>
>>>>>>>> Dave
>>>>>>>>
>>>>>>>>
>>>>>>>>>
>>>>>>>>> Tim Worman
>>>>>>>>> UCLA GSE&IS
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Dec 28, 2009, at 4:45 PM, [email protected] wrote:
>>>>>>>>>
>>>>>>>>>> Check cross database issues and also name sure the types on your pk
>>>>>>>>>> and fk match ... I notice that says your fk is a long, make sure
>>>>>>>>>> that matches the pk of the destination entity.
>>>>>>>>>>
>>>>>>>>>> Sent from my iPhone
>>>>>>>>>>
>>>>>>>>>> On Dec 28, 2009, at 7:33 PM, "Tim Worman"<[email protected]> wrote:
>>>>>>>>>>
>>>>>>>>>>> ...or wondering if I've modeled something incorrectly.
>>>>>>>>>>>
>>>>>>>>>>> I've got a model with these Entities:
>>>>>>>>>>>
>>>>>>>>>>> Timesheet (abstract parent) >----------------- TimeEntry (just a
>>>>>>>>>>> time entry on a timesheet)
>>>>>>>>>>> TimesheetExempt (child)
>>>>>>>>>>> TimesheetNonExempt(child)
>>>>>>>>>>>
>>>>>>>>>>> Everything works fine until a given TimeEntry tries to refer back
>>>>>>>>>>> to its timesheet by calling timesheet(). At that point I get this
>>>>>>>>>>> error:
>>>>>>>>>>>
>>>>>>>>>>> Error: java.lang.IllegalStateException: The object with
>>>>>>>>>>> globalID _EOIntegralKeyGlobalID[Timesheet (java.lang.Long)10253]
>>>>>>>>>>> could not be found in the database. This could be result of a
>>>>>>>>>>> referential integrity problem with the database. An empty fault
>>>>>>>>>>> could not be created because the object's class could not be
>>>>>>>>>>> determined (e.g. the GID is temporary or it is for an abstract
>>>>>>>>>>> entity)
>>>>>>>>>>>
>>>>>>>>>>> It is true that the GID would be for an abstract entity -
>>>>>>>>>>> Timesheet. But I assumed that a TimeEntry would not need to know
>>>>>>>>>>> specifically what variety of Timesheet it is dealing with. I guess
>>>>>>>>>>> the question I have is, what is the better way to model this? Will
>>>>>>>>>>> it be necessary for me to model TimeEntryExempt and
>>>>>>>>>>> TimeEntryNonExempt just so the time entries know which type of
>>>>>>>>>>> timesheet they belong to and don't call the abstract parent?
>>>>>>>>>>>
>>>>>>>>>>> Tim
>>>>>>>>>>> UCLA GSE&IS
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
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>>>>>>>>>
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>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>> David Avendasora
>>>>>>>> Senior Software Engineer
>>>>>>>> K12, Inc.
>>>>>>>>
>>>>>>>> *****
>>>>>>>> WebObjects Documentation Wiki :
>>>>>>>> http://wiki.objectstyle.org/confluence/display/WO/
>>>>>>>> *****
>>>>>>>> WebObjects API:
>>>>>>>> http://developer.apple.com/legacy/mac/library/documentation/MacOSXServer/Reference/WO54_Reference/index.html
>>>>>>>> *****
>>>>>>>>
>>>>>>>
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>>>>>>
>>>>>> _______________________________________________
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>>>>>>
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>>>>>
>>>>> --
>>>>> 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/products/practical_webobjects
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
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>>>>
>>>>
>>>
>>> David Avendasora
>>> Senior Software Engineer
>>> K12, Inc.
>>>
>>> *****
>>> WebObjects Documentation Wiki :
>>> http://wiki.objectstyle.org/confluence/display/WO/
>>> *****
>>> WebObjects API:
>>> http://developer.apple.com/legacy/mac/library/documentation/MacOSXServer/Reference/WO54_Reference/index.html
>>> *****
>>>
>>
>
> --
> 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/products/practical_webobjects
>
>
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>
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>
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