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Editorial Team
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Asked: 2026-05-24T09:17:54+00:00

I am creating multiple persistent store in my application, but I am using only

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I am creating multiple persistent store in my application, but I am using only one persistent store coordinator and managed object model. Now my question is when I call save method on managed object context, which persistent store it will use to save the object. So I want to specify the persistent store to be used to save the object. Same while fetching the objects from database, I want to ensure that my fetch query should be executed on a particular store so that I get objects from that store only. Any help?

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  1. Editorial Team

    Fetching should not be an issue. The fetch request can be modified to search particular stores using the setAffectedStores: method on an NSFetchRequest.

    When you’re creating an object, you can assign the entity to a particular store using the assignObject:toPersisentStore: method on NSManagedObjectContext.

    As to your question, there isn’t really a default mechanism that I am aware of, and it may be that you simply need to set the affected stores to all of your stores:

    [request setAffectedStores:[NSArray arrayWithObjects:firstStore,secondStore,thirdStore, nil]];

    To be sure that you’re looking in all the right places.

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