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Re: Should ERXEC get sharedEC automagically?
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Re: Should ERXEC get sharedEC automagically?


  • Subject: Re: Should ERXEC get sharedEC automagically?
  • From: "ocs@ocs" <email@hidden>
  • Date: Tue, 21 Aug 2018 20:21:38 +0200

Chuck,

> On 21 Aug 2018, at 7:50 PM, Chuck Hill <email@hidden> wrote:
>
> See er.extensions.ERXEC.useSharedEditingContext at
> https://wiki.wocommunity.org/display/documentation/Explanation+of+the+default+properties+in+a+Wonder+project

Thanks a lot!

(Why on earth don't they mention this on the ERXEC documentation page? Oh,
never mind.)

> Did that fix it?

Well, sort of.

It gets curiouser and curiouser — in other words, I must be doing something far
wrong.

When I set the “ERXEC.useSharedEditingContext” property to true, then

- the newly created ERXEC gets a shared editing context immediately upon
creation, not later upon receiving
DefaultSharedEditingContextWasInitializedNotification;
- and it is a different shared EC instance, not
EOSharedEditingContext.defaultSharedEditingContext()
- but it is EOSharedEditingContext.defaultSharedEditingContext() who reads in
automatically all the shared EOs
- and therefore, when fetching EOs through the ERXEC, I am still getting
non-shared ones in the ERXEC (for its own sharedEC is empty, and thus
EOSharedEditingContext.defaultSharedEditingContext is ignored).

Can you make any sense of that?

Thanks again a very big lot,
OC



> On 2018-08-21, 9:43 AM, "Webobjects-dev on behalf of ocs@ocs"
> <webobjects-dev-bounces+chill=email@hidden on behalf of
> email@hidden> wrote:
>
>    Hi there,
>
>    the EOEditing context doc pretty unequivocally says
>
>    ===
>    By default, an editing context that has no shared editing context listens
> for DefaultSharedEditingContextWasInitializedNotifications. If a notification
> is posted while the context has no registered objects, the editing context
> sets its shared editing context to the newly initialized default shared
> editing context.
>    ===
>
>    Should it apply for an ERXEC, too? I sort of inferred it would, but by my
> testing, it does not seem so: an ERXEC I make (through
> ERXEC.newEditingContext()) seems to adamantly stay without
> sharedEditingContext, although the notification is posted all right (I have
> observed it myself to be sure), and if there's a good ole EOEditingContext,
> it indeed duly sets its sharedEC at the time.
>
>    Have I missed something of importance somewhere? The ERXEC documentation
> does not say essentially anything of the sharedEC, far as I can say:
>
>    http://wonder.sourceforge.net/javadoc/er/extensions/ERXEC.html
>
>    In principle, I could work around the problem by setting the sharedEC to
> all my ERXECs programmatically -- that works all right --, but it would be a
> lot of work, with a danger I overlook something somewhere and got bit in the
> tender parts by that...
>
>    Thanks,
>    OC
>
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  • Follow-Ups:
    • Re: Should ERXEC get sharedEC automagically?
      • From: Chuck Hill <email@hidden>
    • Re: Should ERXEC get sharedEC automagically?
      • From: Tim Worman <email@hidden>
References: 
 >Should ERXEC get sharedEC automagically? (From: "ocs@ocs" <email@hidden>)
 >Re: Should ERXEC get sharedEC automagically? (From: Chuck Hill <email@hidden>)

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