WIP: Migrations

This commit is contained in:
John Estropia
2017-04-20 20:26:11 +09:00
parent a543a4c94a
commit 02a660e4a6
11 changed files with 205 additions and 77 deletions

View File

@@ -214,14 +214,14 @@
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B563218C1BD65216006C9394 /* DataStack+Transaction.swift in Sources */,
@@ -2269,7 +2286,7 @@
B56321931BD65216006C9394 /* DataStack+Querying.swift in Sources */,
B56321A71BD65216006C9394 /* MigrationResult.swift in Sources */,
B598514A1C90289E00C99590 /* NSPersistentStoreCoordinator+Setup.swift in Sources */,
B52F74471E9B8724005F3DAC /* XcodeDataModel.swift in Sources */,
B52F74471E9B8724005F3DAC /* XcodeDataModelSchema.swift in Sources */,
B5FEC1901C9166E700532541 /* NSPersistentStore+Setup.swift in Sources */,
B56321A11BD65216006C9394 /* ListMonitor.swift in Sources */,
B5E1B5A51CAA4365007FD580 /* CSCoreStore+Observing.swift in Sources */,
@@ -2287,7 +2304,7 @@
B52F74311E9B50D0005F3DAC /* SchemaHistory.swift in Sources */,
B563218F1BD65216006C9394 /* ImportableObject.swift in Sources */,
B56321991BD65216006C9394 /* OrderBy.swift in Sources */,
B5D339EE1E9495E500C880DE /* Attribute+Querying.swift in Sources */,
B5D339EE1E9495E500C880DE /* CoreStoreObject+Querying.swift in Sources */,
B56321A51BD65216006C9394 /* MigrationChain.swift in Sources */,
B563218E1BD65216006C9394 /* SaveResult.swift in Sources */,
B5E222261CA4E12600BA2E95 /* CSSynchronousDataTransaction.swift in Sources */,
@@ -2320,6 +2337,7 @@
B5A991EE1E9DC2CE0091A2E3 /* VersionLock.swift in Sources */,
B5ECDBEF1CA6BF2000C7F112 /* CSFrom.swift in Sources */,
B52F743F1E9B8724005F3DAC /* DynamicSchema.swift in Sources */,
B5E41EBD1EA8C3B7006240F0 /* MigrationMappingProvider.swift in Sources */,
B56321B41BD6521C006C9394 /* NSManagedObjectContext+Transaction.swift in Sources */,
B56321861BD65216006C9394 /* CoreStoreLogger.swift in Sources */,
B53FBA071CAB300C00F0D40A /* CSMigrationType.swift in Sources */,

View File

@@ -1,5 +1,5 @@
//
// Attribute+Querying.swift
// CoreStoreObject+Querying.swift
// CoreStore
//
// Copyright © 2017 John Rommel Estropia
@@ -27,30 +27,65 @@ import CoreData
import Foundation
// MARK: - DynamicObject
public extension DynamicObject where Self: CoreStoreObject {
@inline(__always)
public static func keyPath<O: CoreStoreObject, V: ImportableAttributeType>(_ attribute: (Self) -> ValueContainer<O>.Required<V>) -> String {
return attribute(self.meta).keyPath
}
@inline(__always)
public static func keyPath<O: CoreStoreObject, V: ImportableAttributeType>(_ attribute: (Self) -> ValueContainer<O>.Optional<V>) -> String {
return attribute(self.meta).keyPath
}
@inline(__always)
public static func `where`(_ condition: (Self) -> Where) -> Where {
return condition(self.meta)
}
}
// MARK: - ValueContainer.Required
public extension ValueContainer.Required {
@inline(__always)
public static func == (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where {
return Where(attribute.keyPath, isEqualTo: value)
}
@inline(__always)
public static func < (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where {
return Where("%K < %@", attribute.keyPath, value)
}
@inline(__always)
public static func > (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where {
return Where("%K > %@", attribute.keyPath, value)
}
@inline(__always)
public static func <= (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where {
return Where("%K <= %@", attribute.keyPath, value)
}
@inline(__always)
public static func >= (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where {
return Where("%K >= %@", attribute.keyPath, value)
}
@inline(__always)
public static func != (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where {
return !Where(attribute.keyPath, isEqualTo: value)
@@ -62,11 +97,13 @@ public extension ValueContainer.Required {
public extension ValueContainer.Optional {
@inline(__always)
public static func == (_ attribute: ValueContainer<O>.Optional<V>, _ value: V?) -> Where {
return Where(attribute.keyPath, isEqualTo: value)
}
@inline(__always)
public static func != (_ attribute: ValueContainer<O>.Optional<V>, _ value: V?) -> Where {
return !Where(attribute.keyPath, isEqualTo: value)

View File

@@ -400,9 +400,9 @@ extension LegacySQLiteStore: CustomDebugStringConvertible, CoreStoreDebugStringC
}
// MARK: - LegacyXcodeDataModel
// MARK: - LegacyXcodeDataModelSchema
extension LegacyXcodeDataModel: CustomDebugStringConvertible, CoreStoreDebugStringConvertible {
extension LegacyXcodeDataModelSchema: CustomDebugStringConvertible, CoreStoreDebugStringConvertible {
// MARK: CustomDebugStringConvertible
@@ -1045,9 +1045,9 @@ extension VersionLock: CustomStringConvertible, CustomDebugStringConvertible, Co
}
// MARK: - XcodeDataModel
// MARK: - XcodeDataModelSchema
extension XcodeDataModel: CustomDebugStringConvertible, CoreStoreDebugStringConvertible {
extension XcodeDataModelSchema: CustomDebugStringConvertible, CoreStoreDebugStringConvertible {
// MARK: CustomDebugStringConvertible

View File

@@ -0,0 +1,36 @@
//
// MigrationMappingProvider.swift
// CoreStore
//
// Copyright © 2017 John Rommel Estropia
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//
import CoreData
import Foundation
// MARK: - MigrationMappingProvider
public protocol MigrationMappingProvider {
associatedtype SourceType: DynamicObject
associatedtype DestinationType: DynamicObject
}

View File

@@ -611,14 +611,14 @@ public final class DataStack: Equatable {
- parameter model: the `NSManagedObjectModel` for the stack
- parameter migrationChain: the `MigrationChain` that indicates the sequence of model versions to be used as the order for progressive migrations. If not specified, will default to a non-migrating data stack.
*/
@available(*, deprecated: 3.1, message: "Use the new DataStack.init(schemaHistory:) initializer passing a LegacyXcodeDataModel instance as argument")
@available(*, deprecated: 3.1, message: "Use the new DataStack.init(schemaHistory:) initializer passing a LegacyXcodeDataModelSchema instance as argument")
public convenience init(model: NSManagedObjectModel, migrationChain: MigrationChain = nil) {
let modelVersion = migrationChain.leafVersions.first!
self.init(
schemaHistory: SchemaHistory(
allSchema: [
LegacyXcodeDataModel(
LegacyXcodeDataModelSchema(
modelName: modelVersion,
model: model
)

View File

@@ -29,8 +29,31 @@ import Foundation
// MARK: - CoreStoreObject
open class CoreStoreObject: DynamicObject, Hashable {
/**
The `CoreStoreObject` is an abstract class for creating CoreStore-managed objects that are more type-safe and more convenient than `NSManagedObject` subclasses. The model entities for `CoreStoreObject` subclasses are inferred from the subclasses' Swift declaration themselves; no .xcdatamodeld files needed. To declare persisted attributes and relationships for the `CoreStoreObject` subclass, declare properties of type `Value.Required<T>`, `Value.Optional<T>` for values, or `Relationship.ToOne<T>`, `Relationship.ToManyOrdered<T>`, `Relationship.ToManyUnordered<T>` for relationships.
```
class Animal: CoreStoreObject {
let species = Value.Required<String>("species")
let nickname = Value.Optional<String>("nickname")
let master = Relationship.ToOne<Person>("master")
}
class Person: CoreStoreObject {
let name = Value.Required<String>("name")
let pet = Relationship.ToOne<Animal>("pet", inverse: { $0.master })
}
```
`CoreStoreObject` entities for a model version should be added to `CoreStoreSchema` instance.
- SeeAlso: CoreStoreSchema
- SeeAlso: CoreStoreObject.Value
- SeeAlso: CoreStoreObject.Relationship
*/
open /*abstract*/ class CoreStoreObject: DynamicObject, Hashable {
/**
Do not call this directly. This is exposed as public only as a required initializer.
- Important: subclasses that need a custom initializer should override both `init(_:)` and `init(asMeta:)`, and to call their corresponding super implementations.
*/
public required init(_ object: NSManagedObject) {
self.isMeta = false
@@ -38,6 +61,10 @@ open class CoreStoreObject: DynamicObject, Hashable {
self.initializeAttributes(Mirror(reflecting: self), { [unowned object] in object })
}
/**
Do not call this directly. This is exposed as public only as a required initializer.
- Important: subclasses that need a custom initializer should override both `init(_:)` and `init(asMeta:)`, and to call their corresponding super implementations.
*/
public required init(asMeta: Void) {
self.isMeta = true

View File

@@ -29,9 +29,21 @@ import Foundation
// MARK: - DynamicSchema
/**
`DynamicSchema` are types that provide `NSManagedObjectModel` instances for a particular model version. CoreStore currently supports concrete types:
- `XcodeDataModelSchema`: describes models loaded from a .xcdatamodeld file.
- `LegacyXcodeDataModelSchema`: describes models loaded directly from an existing `NSManagedObjectModel`. It is not advisable to continue using this model as its metadata are not available to CoreStore.
- `CoreStoreSchema`: describes models written in `CoreStoreObject` Swift class declarations.
*/
public protocol DynamicSchema {
/**
The version string for this model schema.
*/
var modelVersion: ModelVersion { get }
/**
Do not call this directly. The `NSManagedObjectModel` for this schema may be created lazily and using this method directly may affect the integrity of the model.
*/
func rawModel() -> NSManagedObjectModel
}

View File

@@ -1,5 +1,5 @@
//
// LegacyXcodeDataModel.swift
// LegacyXcodeDataModelSchema.swift
// CoreStore
//
// Copyright © 2017 John Rommel Estropia
@@ -27,9 +27,9 @@ import CoreData
import Foundation
// MARK: - LegacyXcodeDataModel
// MARK: - LegacyXcodeDataModelSchema
public final class LegacyXcodeDataModel: DynamicSchema {
public final class LegacyXcodeDataModelSchema: DynamicSchema {
public required init(modelName: ModelVersion, model: NSManagedObjectModel) {

View File

@@ -1,5 +1,5 @@
//
// XcodeDataModel.swift
// XcodeDataModelSchema.swift
// CoreStore
//
// Copyright © 2017 John Rommel Estropia
@@ -27,9 +27,9 @@ import CoreData
import Foundation
// MARK: - XcodeDataModel
// MARK: - XcodeDataModelSchema
public final class XcodeDataModel: DynamicSchema {
public final class XcodeDataModelSchema: DynamicSchema {
public required init(modelVersion: ModelVersion, modelVersionFileURL: URL) {

View File

@@ -37,35 +37,6 @@ public protocol DynamicObject: class {
func cs_toRaw() -> NSManagedObject
}
public extension DynamicObject where Self: CoreStoreObject {
@inline(__always)
public static func keyPath<O: CoreStoreObject, V: ImportableAttributeType>(_ attribute: (Self) -> ValueContainer<O>.Required<V>) -> String {
return attribute(self.meta).keyPath
}
@inline(__always)
public static func keyPath<O: CoreStoreObject, V: ImportableAttributeType>(_ attribute: (Self) -> ValueContainer<O>.Optional<V>) -> String {
return attribute(self.meta).keyPath
}
@inline(__always)
public static func `where`(_ condition: (Self) -> Where) -> Where {
return condition(self.meta)
}
// MARK: Internal
internal static var meta: Self {
return self.init(asMeta: ())
}
}
// MARK: - NSManagedObject
@@ -127,3 +98,14 @@ extension CoreStoreObject {
return self.rawObject!
}
}
// MARK: - Internal
internal extension DynamicObject where Self: CoreStoreObject {
internal static var meta: Self {
return self.init(asMeta: ())
}
}

View File

@@ -29,14 +29,30 @@ import Foundation
// MARK: - SchemaHistory
/**
The `SchemaHistory` encapsulates all model versions that is relevant to the data model, including past versions.
- SeeAlso: SchemaHistory.currentModelVersion
- SeeAlso: SchemaHistory.migrationChain
*/
public final class SchemaHistory: ExpressibleByArrayLiteral {
// MARK: -
/**
The version string for the current model version. The `DataStack` will try to migrate all `StorageInterface`s added to itself to this version, following the version steps provided by the `migrationChain`.
*/
public let currentModelVersion: ModelVersion
/**
The version string for the current model version. The `DataStack` will try to migrate all `StorageInterface`s added to itself to this version, following the version steps provided by the `migrationChain`.
*/
public let migrationChain: MigrationChain
/**
Initializes a `SchemaHistory` with all models declared in the specified (.xcdatamodeld) model file.
- Important: Use this initializer only if all model versions are either `XcodeDataModelSchema`s or `LegacyXcodeDataModelSchema`s. Do not use this initializer if even one of the model versions is a `CoreStoreSchema`; use the `SchemaHistory.init(allSchema:migrationChain:exactCurrentModelVersion:)` initializer instead.
- parameter modelName: the name of the (.xcdatamodeld) model file. If not specified, the application name (CFBundleName) will be used if it exists, or "CoreData" if it the bundle name was not set.
- parameter bundle: an optional bundle to load models from. If not specified, the main bundle will be used.
- parameter migrationChain: the `MigrationChain` that indicates the sequence of model versions to be used as the order for progressive migrations. If not specified, will default to a non-migrating data stack.
*/
public convenience init(modelName: XcodeDataModelFileName, bundle: Bundle = Bundle.main, migrationChain: MigrationChain = nil) {
guard let modelFilePath = bundle.path(forResource: modelName, ofType: "momd") else {
@@ -92,7 +108,7 @@ public final class SchemaHistory: ExpressibleByArrayLiteral {
for modelVersion in modelVersions {
let fileURL = modelFileURL.appendingPathComponent("\(modelVersion).mom", isDirectory: false)
allSchema.append(XcodeDataModel(modelVersion: modelVersion, modelVersionFileURL: fileURL))
allSchema.append(XcodeDataModelSchema(modelVersion: modelVersion, modelVersionFileURL: fileURL))
}
self.init(
allSchema: allSchema,