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Re: pulling top level of relationships
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Re: pulling top level of relationships


  • Subject: Re: pulling top level of relationships
  • From: Lachlan Deck <email@hidden>
  • Date: Fri, 6 Feb 2009 04:04:06 +1100

On 06/02/2009, at 3:03 AM, Don Lindsay wrote:

When I use objectsWithFetchSpecification to retrieve an Array of User objects. (I setEntity("Users") and setIsDeep(true)).

@see EOFetchSpecification#setIsDeep.
This is not doing what you're looking for. i.e., you're not using inheritance from your description - but a relationship.


The Relationships in the Users object are not fetched. I believe this is due to faulting by EO.

Lazy faulting is default behaviour, correct.

I would like to retrieve the top level relationships in the object without the EO having to make a round trip to the database, at a later time. Is there a way to pull the top level relationships in an Entity, or specify if I want to go deeper into the relationship model?

to use the example of users.

User Entity:
  Username attribute: String
  Password attribute: String
  Person attribute: Person EO Object

What I want to do is fetch all users and ensure that the Person object is fetched when I receive the Array of EOs back from objectsWithFetchSpecification.

fetchSpec.setPrefetchingRelationshipKeyPaths(new NSArray<String>("person"));


with regards,
--

Lachlan Deck

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  • Follow-Ups:
    • Re: pulling top level of relationships
      • From: Don Lindsay <email@hidden>
    • Re: pulling top level of relationships
      • From: Mike Schrag <email@hidden>
References: 
 >pulling top level of relationships (From: Don Lindsay <email@hidden>)

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