Re: inheritance problem...
Re: inheritance problem...
- Subject: Re: inheritance problem...
- From: Chuck Hill <email@hidden>
- Date: Mon, 4 Jan 2010 15:27:20 -0800
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.
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@hidden 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@hidden>
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
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden
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
*****
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden
--
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
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden