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Migrates from Core Data model v2 to v3

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This commit is contained in:
Riley Testut
2020-01-24 15:25:49 -08:00
parent cd5769b294
commit 269580c127
6 changed files with 749 additions and 85 deletions
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487
AltStore/Model/Migrations/Mapping Models/AltStore2ToAltStore3.xcmappingmodel/xcmapping.xml Normal file
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AltStore/Model/Migrations/Policies/InstalledAppPolicy.swift Normal file
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//
// InstalledAppPolicy.swift
// AltStore
//
// Created by Riley Testut on 1/24/20.
// Copyright © 2020 Riley Testut. All rights reserved.
//
import CoreData
@objc(InstalledAppToInstalledAppMigrationPolicy)
class InstalledAppToInstalledAppMigrationPolicy: NSEntityMigrationPolicy
{
override func createRelationships(forDestination dInstance: NSManagedObject, in mapping: NSEntityMapping, manager: NSMigrationManager) throws
{
try super.createRelationships(forDestination: dInstance, in: mapping, manager: manager)
// Entity must be in manager.destinationContext.
let entity = NSEntityDescription.entity(forEntityName: "Team", in: manager.destinationContext)
let fetchRequest = NSFetchRequest<NSManagedObject>()
fetchRequest.entity = entity
fetchRequest.predicate = NSPredicate(format: "%K == YES", #keyPath(Team.isActiveTeam))
let teams = try manager.destinationContext.fetch(fetchRequest)
// Cannot use NSManagedObject subclasses during migration, so fallback to using KVC instead.
dInstance.setValue(teams.first, forKey: #keyPath(InstalledApp.team))
}
}