• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Re: Null-Pointers from a to Many array
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Null-Pointers from a to Many array


  • Subject: Re: Null-Pointers from a to Many array
  • From: Chuck Hill <email@hidden>
  • Date: Tue, 05 Oct 2004 13:26:16 -0700

Yes, you have done something wrong.  Check:

1. Must call super in awakeFromInsertion
2. Must call super in awakeFromFetch
3. Must insert into EC before accessing relationhip
4. If navigating to this object via a relationship from another object,
check the referential integrity in the DB.  Invalid references are
translated into dummy fault objects with null values
5. If using KVC to get the relationship, did you spell the key correctly?


There are probably more...

Chuck


At 08:45 AM 05/10/2004 +1000, Greg Hulands wrote:
>Hi,
>When I try to access the array of a to many relationship and it
>contains no records, instead of returning an empty array, it returns
>null. I am using wonder if that makes a difference. Is this a normal
>thing? It seems a pain in the ass that each time I want to iterate over
>a to many array I have to check to see if it isn't null.
>
>Am I doing something wrong?
>
>Regards,
>Greg
>
> _______________________________________________
>Do not post admin requests to the list. They will be ignored.
>Webobjects-dev mailing list      (email@hidden)
>Help/Unsubscribe/Update your Subscription:
e.net
>
>This email sent to email@hidden
>

--

Chuck Hill                                 email@hidden
Global Village Consulting Inc.             http://www.global-village.net
 _______________________________________________
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

  • Follow-Ups:
    • Re: Null-Pointers from a to Many array
      • From: Greg Hulands <email@hidden>
  • Prev by Date: Re: CAN Edit/Delete imported DB entries; CAN NO LONGER create new ones!
  • Next by Date: Re: Null-Pointers from a to Many array
  • Previous by thread: Re: Null-Pointers from a to Many array
  • Next by thread: Re: Null-Pointers from a to Many array
  • Index(es):
    • Date
    • Thread