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Re: How to fetch Null objects
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Re: How to fetch Null objects


  • Subject: Re: How to fetch Null objects
  • From: Kieran Kelleher <email@hidden>
  • Date: Tue, 5 Jun 2007 17:49:26 -0400

In code, you can use EOKeyValueQualifier with a value of NSKeyValueCoding.NullValue which is a substitute for null where null cannot be used in Apple's frameworks.

On Jun 5, 2007, at 5:13 PM, Ted Archibald wrote:

Is there a more elegant way of trying to fetch null objects?

Currently I have an object 'Posting' with a fetch spec 'fetchNullPostingForMonth' with the qualifier '(objectIDPostingsForMonth = nil)'

Then in my code I have:

NSArray results = EOUtilities.objectsWithFetchSpecificationAndBindings( ec, "Posting", "fetchNullPostingForMonth", null);

To me this seems crude, but it does work. Is there a better way though?
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References: 
 >How to fetch Null objects (From: "Ted Archibald" <email@hidden>)

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