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Misleading exception message for missing managed object subclasses #115

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opened 2025-12-29 18:23:10 +01:00 by adam · 4 comments
adam commented 2025-12-29 18:23:10 +01:00
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Originally created by @deanWombourne on GitHub (Dec 23, 2016).

If corestore can't find the managed object subclass, an exception is thrown:

❗ [CoreStore: Assertion Failure] DataStack.swift:478 createPersistentStoreFromStorage(_:finalURL:finalStoreOptions:)
  ↪︎ The class 'Swift.String' for the entity <ClientEntity> does not exist. Check if the subclass type and module name are properly configured.

This should really be:

❗ [CoreStore: Assertion Failure] DataStack.swift:478 createPersistentStoreFromStorage(_:finalURL:finalStoreOptions:)
  ↪︎ The class 'TaskTimer.ClientEntity' for the entity <ClientEntity> does not exist. Check if the subclass type and module name are properly configured.

Swift.String is the class of the name of the missing class - the missing class is really TaskTimer.ClientEntity

Originally created by @deanWombourne on GitHub (Dec 23, 2016). If corestore can't find the managed object subclass, an exception is thrown: ``` ❗ [CoreStore: Assertion Failure] DataStack.swift:478 createPersistentStoreFromStorage(_:finalURL:finalStoreOptions:) ↪︎ The class 'Swift.String' for the entity <ClientEntity> does not exist. Check if the subclass type and module name are properly configured. ``` This should really be: ``` ❗ [CoreStore: Assertion Failure] DataStack.swift:478 createPersistentStoreFromStorage(_:finalURL:finalStoreOptions:) ↪︎ The class 'TaskTimer.ClientEntity' for the entity <ClientEntity> does not exist. Check if the subclass type and module name are properly configured. ``` `Swift.String` is the class of the _name_ of the missing class - the missing class is really `TaskTimer.ClientEntity`
adam closed this issue 2025-12-29 18:23:10 +01:00
adam commented 2025-12-29 18:23:11 +01:00
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@JohnEstropia commented on GitHub (Dec 26, 2016):

Thanks. That is weird. Must be a Swift 3 side effect.

@JohnEstropia commented on GitHub (Dec 26, 2016): Thanks. That is weird. Must be a Swift 3 side effect.
adam commented 2025-12-29 18:23:12 +01:00
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@deanWombourne commented on GitHub (Dec 29, 2016):

Yes, I've had odd things like this moving to swift 3 as well :/ I think it's using the generic version of cs_typeName instead of the String? one when you pass in a String, but I can't say why, or predict when it happens yet. I guess practice makes perfect :)

@deanWombourne commented on GitHub (Dec 29, 2016): Yes, I've had odd things like this moving to swift 3 as well :/ I _think_ it's using the generic version of `cs_typeName` instead of the `String?` one when you pass in a `String`, but I can't say why, or predict when it happens yet. I guess practice makes perfect :)
adam commented 2025-12-29 18:23:12 +01:00
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@JohnEstropia commented on GitHub (Dec 31, 2016):

@deanWombourne I think your PR should resolve this. I see you reopened the issue, have you found cases where the wrong overload still gets called?

@JohnEstropia commented on GitHub (Dec 31, 2016): @deanWombourne I think your PR should resolve this. I see you reopened the issue, have you found cases where the wrong overload still gets called?
adam commented 2025-12-29 18:23:12 +01:00
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@deanWombourne commented on GitHub (Jan 2, 2017):

Nope - I pressed the wrong button submitting my last comment and closed it by mistake, so I reopened it. I wasn't sure when yo closed issues - fixed in master vs. released so I left it open for you to close when you want :) It's definitely fixed for me.

@deanWombourne commented on GitHub (Jan 2, 2017): Nope - I pressed the wrong button submitting my last comment and closed it by mistake, so I reopened it. I wasn't sure when yo closed issues - fixed in master vs. released so I left it open for you to close when you want :) It's definitely fixed for me.
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Reference: starred/CoreStore-JohnEstropia#115