Apple

Anyway my app does contain

setPageRefreshOnBacktrackEnabled(YES);

but still there are occassional problems (especially with Safari some time ago I've encountered at least one case when my server simply was not informed at all that user did backtrack -- it was all right in other browsers --, and then I got a completely nonsense action from the page).

I’ve seen this sort of thing caused by backtracking. It is usually unexpected code paths, rather than obviously incorrect code

thanks a lot!

On 2015-01-21, 12:20 PM, "OC" wrote:

I believe you both, but my problem is

(a) far as I remember, I create my EOs using EOUtilities.createAndInsertInstance, exclusively;

(b) since my memory is not reliable, I've used grep, and there's not one "new DBRecord" nor "new DBAuction" in my whole project

(c) I happen to override toString for my EOs and log the EC there, and in my logs, there's not one null EC.

Actually the (very probably, can't be entirely sure from the log) offending DBRecord has been logged out shortly before the NPE, with null PK (for it was newly created, which makes sense), and... a non-null EC.

That all said, of course it is still possible I've got either a DBRecord or its related DBAuction with null EC due to some strange bug, but darn, it's weird :-O

Thanks a lot,

OC

On 21. 1. 2015, at 18:26, Chuck Hill <email@hidden> wrote:

I am pretty sure that Hugi is right here.

On 2015-01-21, 6:04 AM, "Hugi Thordarson" wrote:

Are you sure your object is in an editing context?

Cheers,

- hugi

// Hugi Thordarson

// http://www.loftfar.is/

// s. 895-6688

On 21. jan. 2015, at 14:01, OC <email@hidden> wrote:

Hello there,

how on earth can this happen?!?

===

Caused by: java.lang.NullPointerException

at com.webobjects.eocontrol.EOCustomObject.willReadRelationship(EOCustomObject.java:1270)

at er.extensions.eof.ERXGenericRecord.willReadRelationship(ERXGenericRecord.java:380)

at com.webobjects.eocontrol._EOMutableKnownKeyDictionary$Initializer$_LazyGenericRecordBinding.valueInObject(_EOMutableKnownKeyDictionary.java:614)

at er.extensions.eof.ERXGenericRecord$TouchingBinding.valueInObject(ERXGenericRecord.java:209)

at com.webobjects.eocontrol.EOCustomObject.storedValueForKey(EOCustomObject.java:1634)

at com.webobjects.eocontrol.EOCustomObject$storedValueForKey$0.callCurrent(Unknown Source)

at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:49)

at com.webobjects.eocontrol.EOCustomObject$storedValueForKey$0.callCurrent(Unknown Source)

at model._DBRecord.auction(_DBRecord.groovy:61)

===

The _DBRecord thing is one of the pretty old legacy parts, standard EO code as generated in an Eclipse project by its eogenerator, as it used to work a couple of years ago when I used Eclipse the last time:

===

   public static final ERXKey<model.DBAuction> AUCTION = new ERXKey<model.DBAuction>("auction");

...

   public static final String AUCTION_KEY = AUCTION.key();

...

   public model.DBAuction auction() {

     (model.DBAuction)storedValueForKey(_DBRecord.AUCTION_KEY) // <== line 61

   }

===

The relationship should be nonempty, but even if it was empty, it should simply return null from storedValueForKey, and not NPE?!? :-O

Thanks for any insight,

OC

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References:
	>NPE in storedValueForKey?!? (From: OC <email@hidden>)
	>Re: NPE in storedValueForKey?!? (From: Hugi Thordarson <email@hidden>)
	>Re: NPE in storedValueForKey?!? (From: Chuck Hill <email@hidden>)
	>Re: NPE in storedValueForKey?!? (From: OC <email@hidden>)
	>Re: NPE in storedValueForKey?!? (From: Chuck Hill <email@hidden>)
	>Re: NPE in storedValueForKey?!? (From: OC <email@hidden>)