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Code Issues 95 Packages Projects Releases 10 Wiki Activity

improved migrationchain validation

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This commit is contained in:
John Rommel Estropia
2015-07-13 07:47:43 +09:00
parent a64bcc474e
commit f99349f99d
9 changed files with 89 additions and 41 deletions
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27
CoreStore/Internal/NSManagedObjectModel+Setup.swift
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@@ -33,7 +33,7 @@ internal extension NSManagedObjectModel {
// MARK: Internal
@nonobjc internal class func fromBundle(bundle: NSBundle, modelName: String, modelVersion: String? = nil) -> NSManagedObjectModel {
@nonobjc internal class func fromBundle(bundle: NSBundle, modelName: String, modelVersionHints: Set<String> = []) -> NSManagedObjectModel {
guard let modelFilePath = bundle.pathForResource(modelName, ofType: "momd") else {
@@ -46,19 +46,34 @@ internal extension NSManagedObjectModel {
guard let versionInfo = NSDictionary(contentsOfURL: versionInfoPlistURL),
let versionHashes = versionInfo["NSManagedObjectModel_VersionHashes"] as? [String: AnyObject] else {
fatalError("Could not load \(typeName(NSManagedObjectModel)) metadata from path \"\(versionInfoPlistURL)\"."
)
fatalError("Could not load \(typeName(NSManagedObjectModel)) metadata from path \"\(versionInfoPlistURL)\".")
}
let modelVersions = Set(versionHashes.keys)
let currentModelVersion: String
if let modelVersion = modelVersion {
if let plistModelVersion = versionInfo["NSManagedObjectModel_CurrentVersionName"] as? String where modelVersionHints.isEmpty || modelVersionHints.contains(plistModelVersion) {
currentModelVersion = modelVersion
currentModelVersion = plistModelVersion
}
else if let resolvedVersion = modelVersions.intersect(modelVersionHints).first {
CoreStore.log(
.Warning,
message: "The MigrationChain leaf versions do not include the model file's current version. Resolving to version \"\(resolvedVersion)\"."
)
currentModelVersion = resolvedVersion
}
else if let resolvedVersion = modelVersions.first ?? modelVersionHints.first {
CoreStore.log(
.Warning,
message: "The MigrationChain leaf versions do not include any of the model file's embedded versions. Resolving to version \"\(resolvedVersion)\"."
)
currentModelVersion = resolvedVersion
}
else {
currentModelVersion = versionInfo["NSManagedObjectModel_CurrentVersionName"] as? String ?? modelVersions.first!
fatalError("No model files were found in URL \"\(modelFileURL)\".")
}
var modelVersionFileURL: NSURL?