Re: You crossed editing context boundaries...
Re: You crossed editing context boundaries...
- Subject: Re: You crossed editing context boundaries...
- From: David LeBer <email@hidden>
- Date: Tue, 14 Oct 2008 23:32:17 -0400
On 14-Oct-08, at 10:19 PM, WebObjects wrote:
mmm.. weird I tried to add it one by one using the
addObjectToBothSidesOfRelationshipWithKey() method
and it stills giving me the java.lang.nullpointerexception
:S:S:S:
maybe something wrong with my EOModel???
Im attaching it..
<ScheduleControl.eomodeld>
The join table between Employee and Turn looks whacked.
- It has a three way compound primary key. (employeeId, id, turnId)
- It has a 'creationDate' attribute.
- It participates in a flattened relationship between Employee and Turn.
EOF is not going to know how generate that three way compound primary
key.
If EmployeeXTurn is just a join table and is going to be flattened out
of the object graph then it should just have a 2 way compound PK based
on the FKs from Employee and Turn and it should NOT have any other
attributes.
If EmployeeXTurn has attributes you need to gain access to (i.e.
creationDate) then you should treat it like a standard EO.
- Remove the flattened relationships from Employee to Turn
- Expose the relationships from Employee and Turn to EmployeeXTurn
- Use only id as the PK.
- Manage the creation of EmployeeXTurn manually.
apart of the consistency names and other stuff, are the relations
good?
Regards
Gus
On Oct 14, 2008, at 7:43 PM, Ricardo J. Parada wrote:
How about your registerTurns() method? Did you change it to use
myEC instead of ERXEC.newEditingContext()?
On Oct 14, 2008, at 8:17 PM, WebObjects wrote:
aha... you are right, after whole day sitting here, I didn't
realize I had teh emp at login with the
session().defaultEditingContext, and here at PaguinaUsuario I m
using another one.
My mind its kind of distracted...
I made the changes, and still Im getting the nullpointerexception
java.lang.NullPointerException
[2008-10-14 19:13:51 COT] <WorkerThread0>
java.lang.NullPointerException
at
com
.webobjects
.eoaccess
.EODatabaseContext
._objectFaultWithSnapshotRelationshipEditingContext
(EODatabaseContext.java:2356)
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
er
.extensions
.eof.ERXGenericRecord.willReadRelationship(ERXGenericRecord.java:
348)
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:4814)
at
com
.webobjects
.eoaccess.EODatabaseContext.valuesForKeys(EODatabaseContext.java:
6535)
at
com
.webobjects
.eocontrol
.EOObjectStoreCoordinator
.valuesForKeys(EOObjectStoreCoordinator.java:326)
at com.webobjects.eoaccess.EOQualifierSQLGeneration
$
_KeyValueQualifierSupport
.schemaBasedQualifierWithRootEntity(EOQualifierSQLGeneration.java:
439)
at er.extensions.ERXExtensions
$
KeyValueQualifierSQLGenerationSupport
.schemaBasedQualifierWithRootEntity(ERXExtensions.java:304)
at com.webobjects.eoaccess.EOQualifierSQLGeneration
$
Support
._schemaBasedQualifierWithRootEntity(EOQualifierSQLGeneration.java:
179)
at
com
.webobjects
.eoaccess
.EODatabaseChannel
.selectObjectsWithFetchSpecification(EODatabaseChannel.java:227)
and more........ much more.
On Oct 14, 2008, at 7:06 PM, Ricardo J. Parada wrote:
It looks like you got the employee object using the session's
default editing context. And you are saying that your
PaginaUsuario creates its own editing context in the
constructor. So there you have it: two different editing contexts.
I would modify your setEmp() method in the PaginaUsuario that you
make a copy of the emp object passed in to the editing context
used in that page. Something like this:
public void estEmp(Employee anEmp) {
emp = anEmp.localInstanceIn(myEC);
}
Then your registerTurns() method is yet creating another editing
context. Shouldn't that be also myEC??
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;david
--
David LeBer
Codeferous Software
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