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Code Issues 95 Packages Projects Releases 10 Wiki Activity

WIP: make fetching methods throwable

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John Estropia
2019-01-11 19:52:12 +09:00
parent 42d1f41939
commit 5777831565
16 changed files with 326 additions and 226 deletions
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35
Sources/From.swift
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@@ -139,29 +139,40 @@ public struct From<D: DynamicObject> {
self.findPersistentStores = findPersistentStores
}
internal func applyToFetchRequest<ResultType>(_ fetchRequest: NSFetchRequest<ResultType>, context: NSManagedObjectContext, applyAffectedStores: Bool = true) -> Bool {
internal func applyToFetchRequest<U>(_ fetchRequest: NSFetchRequest<U>, context: NSManagedObjectContext, applyAffectedStores: Bool = true) throws {
fetchRequest.entity = context.parentStack!.entityDescription(for: EntityIdentifier(self.entityClass))!
guard applyAffectedStores else {
return true
return
}
if self.applyAffectedStoresForFetchedRequest(fetchRequest, context: context) {
return true
do {
try self.applyAffectedStoresForFetchedRequest(fetchRequest, context: context)
}
catch let error as CoreStoreError {
CoreStore.log(
error,
"Attempted to perform a fetch but could not find any persistent store for the entity \(cs_typeName(fetchRequest.entityName))"
)
throw error
}
catch {
throw error
}
CoreStore.log(
.warning,
message: "Attempted to perform a fetch but could not find any persistent store for the entity \(cs_typeName(fetchRequest.entityName))"
)
return false
}
internal func applyAffectedStoresForFetchedRequest<U>(_ fetchRequest: NSFetchRequest<U>, context: NSManagedObjectContext) -> Bool {
internal func applyAffectedStoresForFetchedRequest<U>(_ fetchRequest: NSFetchRequest<U>, context: NSManagedObjectContext) throws {
let stores = self.findPersistentStores(context)
fetchRequest.affectedStores = stores
return stores?.isEmpty == false
if stores?.isEmpty == false {
return
}
throw CoreStoreError.persistentStoreNotFound(entity: self.entityClass)
}