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Re: WO5.4: Generics for objectsWithFetchSpecification ???
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Re: WO5.4: Generics for objectsWithFetchSpecification ???


  • Subject: Re: WO5.4: Generics for objectsWithFetchSpecification ???
  • From: Mike Schrag <email@hidden>
  • Date: Mon, 7 Jan 2008 23:03:16 -0500

.... pretend .... you ... never mentioned that?

I suppose your fetch spec would then be EOFetchSpecification<NSDictionary> and maybe it would just work out?

ms

On Jan 7, 2008, at 10:04 PM, Mr. Pierre Frisch wrote:

And what do you do with raw rows?

Pierre
--
Pierre Frisch
email@hidden


On Jan 7, 2008, at 7:36, Mike Schrag wrote:

NSArray<MyEO> = ec.objectsWithFetchSpecification(spec, MyEO.class)
I think generic EOFS would be better ... Passing in Class objects to fulfill generics always feels a bit like hackery. It's really cheating -- you're basically casting without using cast syntax, because you can't enforce that the class you put in is actually  related to the objects of the fetch spec in any way, so it's as unsafe as an arbitrary cast.

public <T> NSArray<T> objectsWithFetchSpecification(EOFetchSpecification<T> fetchSpec) { ... }

then

EOFetchSpecification<Person> fetchSpec = ...;
NSArray<Person> people = ec.objectsWithFetchSpecification(fetchSpec);


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  • Follow-Ups:
    • Re: WO5.4: Generics for objectsWithFetchSpecification ???
      • From: "Mr. Pierre Frisch" <email@hidden>
References: 
 >WO5.4: Generics for objectsWithFetchSpecification ??? (From: Gaastra Dennis - WO Lists <email@hidden>)
 >Re: WO5.4: Generics for objectsWithFetchSpecification ??? (From: Mike Schrag <email@hidden>)
 >Re: WO5.4: Generics for objectsWithFetchSpecification ??? (From: Anjo Krank <email@hidden>)
 >Re: WO5.4: Generics for objectsWithFetchSpecification ??? (From: Mike Schrag <email@hidden>)
 >Re: WO5.4: Generics for objectsWithFetchSpecification ??? (From: "Mr. Pierre Frisch" <email@hidden>)

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