OK.  So on this particular type of EO it always goes through a wizard where I 
use a parent & child editing context. 

Do I need to unlock/lock before I save changes on every step? 

On Feb 20, 2013, at 3:08 PM, Chuck Hill <[email protected]> wrote:

> 
> On 2013-02-20, at 5:05 PM, Johnny Miller wrote:
> 
>> I can't figure out why it's talking to this EO at all.  It should be 
>> creating a new EO not modifying an existing one.
> 
> That is EXACTLY what happens when things are not locked properly.  The EC 
> processes a notification and basically goes insane, losing track of which 
> objects are inserted, updated, etc.
> 
> 
> Chuck
> 
> 
>> 
>> On Feb 20, 2013, at 3:00 PM, Ken Anderson <[email protected]> wrote:
>> 
>>> What is the code doing to the object that's being modified?
>>> 
>>> On Feb 20, 2013, at 5:56 PM, Johnny Miller <[email protected]> wrote:
>>> 
>>>> Hi Ken,
>>>> 
>>>> Sure -  The XXXs represent information that I stripped for customer 
>>>> privacy.
>>>> 
>>>> So the EO that is getting changed exists in the DB and it is not created 
>>>> by the app that is throwing the error.  The DB is using sequences to track 
>>>> the primary keys.  I'm not doing anything other than using the defaults.  
>>>> The error is it cannot set the hub_id to null which should fail validation 
>>>> on both the EO and the DB.  Why it is trying to do that is the mystery to 
>>>> me.
>>>> 
>>>> Thanks a lot,
>>>> 
>>>> Johnny
>>>> 
>>>> com.webobjects.eoaccess.EOGeneralAdaptorException: EvaluateExpression 
>>>> failed: : Next exception:SQL State:23502 -- error code: 0 -- msg: ERROR: 
>>>> null value in column "hub_id" violates not-null constraint Detail: Failing 
>>>> row contains (null, 0, 0, 1111852918, 2013-02-20 06:00:45.343-10, 
>>>> XXXXXXXXX, XXXXXXXXXX, null, null, null, 0, null, 7171, 0, 2013-02-20 
>>>> 06:00:45.343, 2, 2013-04-12 11:05:00-10, 2, 6, 0, null, 149, 9, XXXXXXXXX, 
>>>> 0.00, null, null, 55.00, 11.00, null, 2, 0, 0, 0, 0, XXXXXX, 2013-04-12 
>>>> 11:05:00, 0, 1, null). at 
>>>> com.webobjects.eoaccess.EODatabaseContext._exceptionWithDatabaseContextInformationAdded(EODatabaseContext.java:4504)
>>>>  at 
>>>> com.webobjects.eoaccess.EODatabaseContext.performChanges(EODatabaseContext.java:6216)
>>>>  at 
>>>> com.webobjects.eocontrol.EOObjectStoreCoordinator.saveChangesInEditingContext(EOObjectStoreCoordinator.java:376)
>>>>  at 
>>>> com.webobjects.eocontrol.EOEditingContext.saveChanges(EOEditingContext.java:3192)
>>>>  at er.extensions.eof.ERXEC._saveChanges(ERXEC.java:1176) at 
>>>> er.extensions.eof.ERXEC.saveChanges(ERXEC.java:1099) at 
>>>> com.hawaiiexecutivetransportation.components.pages.ReservationPaymentPage.processPayment(ReservationPaymentPage.java:155)
>>>>  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at 
>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>>>>  at 
>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>>>>  at java.lang.reflect.Method.invoke(Method.java:597) at 
>>>> com.webobjects.foundation.NSKeyValueCoding$ValueAccessor$1.methodValue(NSKeyValueCoding.java:636)
>>>>  at 
>>>> com.webobjects.foundation.NSKeyValueCoding$_MethodBinding.valueInObject(NSKeyValueCoding.java:1134)
>>>>  at 
>>>> com.webobjects.foundation.NSKeyValueCoding$DefaultImplementation.valueForKey(NSKeyValueCoding.java:1324)
>>>>  at 
>>>> com.webobjects.appserver.WOComponent.valueForKey(WOComponent.java:1736) at 
>>>> com.webobjects.foundation.NSKeyValueCoding$Utility.valueForKey(NSKeyValueCoding.java:447)
>>>>  at 
>>>> com.webobjects.foundation.NSKeyValueCodingAdditions$DefaultImplementation.valueForKeyPath(NSKeyValueCodingAdditions.java:212)
>>>>  at 
>>>> com.webobjects.appserver.WOComponent.valueForKeyPath(WOComponent.java:1804)
>>>>  at 
>>>> com.webobjects.appserver._private.WOKeyValueAssociation.valueInComponent(WOKeyValueAssociation.java:50)
>>>>  at 
>>>> com.webobjects.appserver._private.WOSubmitButton.invokeAction(WOSubmitButton.java:70)
>>>>  at 
>>>> er.extensions.foundation.ERXPatcher$DynamicElementsPatches$SubmitButton.invokeAction(ERXPatcher.java:203)
>>>>  at 
>>>> com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
>>>>  at 
>>>> com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
>>>>  at 
>>>> com.webobjects.appserver._private.WOConditional.invokeAction(WOConditional.java:86)
>>>>  at 
>>>> com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
>>>>  at 
>>>> com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
>>>>  at 
>>>> er.extensions.components._private.ERXWOForm.invokeAction(ERXWOForm.java:218)
>>>>  at 
>>>> com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
>>>>  at 
>>>> com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
>>>>  at 
>>>> com.webobjects.appserver._private.WOComponentContent.invokeAction(WOComponentContent.java:38)
>>>>  at 
>>>> com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
>>>>  at 
>>>> com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
>>>>  at 
>>>> com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java:1079) 
>>>> at 
>>>> er.extensions.components.ERXComponent.invokeAction(ERXComponent.java:168) 
>>>> at 
>>>> com.webobjects.appserver._private.WOComponentReference.invokeAction(WOComponentReference.java:127)
>>>>  at 
>>>> com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
>>>>  at 
>>>> com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
>>>>  at 
>>>> com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java:1079) 
>>>> at 
>>>> er.extensions.components.ERXComponent.invokeAction(ERXComponent.java:168) 
>>>> at com.webobjects.appserver.WOSession.invokeAction(WOSession.java:1357) at 
>>>> com.webobjects.appserver.WOApplication.invokeAction(WOApplication.java:1745)
>>>>  at 
>>>> er.extensions.appserver.ajax.ERXAjaxApplication.invokeAction(ERXAjaxApplication.java:117)
>>>>  at 
>>>> er.extensions.appserver.ERXApplication.invokeAction(ERXApplication.java:2029)
>>>>  at 
>>>> er.extensions.appserver.ERXComponentRequestHandler._dispatchWithPreparedPage(ERXComponentRequestHandler.java:157)
>>>>  at 
>>>> er.extensions.appserver.ERXComponentRequestHandler._dispatchWithPreparedSession(ERXComponentRequestHandler.java:235)
>>>>  at 
>>>> er.extensions.appserver.ERXComponentRequestHandler._dispatchWithPreparedApplication(ERXComponentRequestHandler.java:268)
>>>>  at 
>>>> er.extensions.appserver.ERXComponentRequestHandler._handleRequest(ERXComponentRequestHandler.java:302)
>>>>  at 
>>>> er.extensions.appserver.ERXComponentRequestHandler.handleRequest(ERXComponentRequestHandler.java:377)
>>>>  at 
>>>> com.webobjects.appserver.WOApplication.dispatchRequest(WOApplication.java:1687)
>>>>  at 
>>>> er.extensions.appserver.ERXApplication.dispatchRequestImmediately(ERXApplication.java:2150)
>>>>  at 
>>>> er.extensions.appserver.ERXApplication.dispatchRequest(ERXApplication.java:2115)
>>>>  at 
>>>> com.webobjects.appserver._private.WOWorkerThread.runOnce(WOWorkerThread.java:144)
>>>>  at 
>>>> com.webobjects.appserver._private.WOWorkerThread.run(WOWorkerThread.java:226)
>>>>  at java.lang.Thread.run(Thread.java:662)
>>>> 
>>>> 
>>>> 
>>>> On Feb 20, 2013, at 2:46 PM, Ken Anderson <[email protected]> wrote:
>>>> 
>>>>> Johnny,
>>>>> 
>>>>> Could you post the details of the exception?
>>>>> 
>>>>> Also, how are you getting your primary keys?  You really shouldn't have a 
>>>>> problem assuming you're using a table for primary keys.
>>>>> 
>>>>> Ken
>>>>> 
>>>>> On Feb 20, 2013, at 5:43 PM, Johnny Miller <[email protected]> wrote:
>>>>> 
>>>>>> Hi,
>>>>>> 
>>>>>> OK.  This is a hard one to explain.
>>>>>> 
>>>>>> Basically, I have a site that has a back and a front end.  Separate apps 
>>>>>> running on the same host.  I'm using ERJGroupsSynchronizer.  The host is 
>>>>>> AWS with Amazon Linux AMI.  The database is PostgreSQL 9.2.
>>>>>> 
>>>>>> Both ends create objects.  For some reason every few days or so I get an 
>>>>>> EOGeneralAdapterException when the front end goes to insert an object.  
>>>>>> It's trying to change some properties on an EO of the same type created 
>>>>>> at the same time in the back end.  I'm thinking that is happening 
>>>>>> because somehow they are sharing the same primary key.
>>>>>> 
>>>>>> If that is right, is there a way to delay the assigning of the key until 
>>>>>> the object gets inserted?
>>>>>> 
>>>>>> Aloha,
>>>>>> Mr. Johnny Miller
>>>>>> Web Development Manager
>>>>>> Kahalawai Media Company
>>>>>> Lahaina, HI 96761
>>>>>> tel: (808) 661-7962 | mobile: (808) 283-0791
>>>>>> website | e-mail 
>>>>>> 
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>>>>> 
>>>> 
>>> 
>> 
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> 
> -- 
> Chuck Hill             
> Executive Managing Partner, VP Development and Tecnical Services
> 
> Practical WebObjects - for developers who want to increase their overall 
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