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Added alternative way to set keyPathsForValuesAffectingValue(forKey:) for CoreStoreObjects

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This commit is contained in:
John Rommel Estropia
2017-06-05 01:30:26 +09:00
parent ddd1ffb29f
commit d7b07b3f00
6 changed files with 476 additions and 74 deletions
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102
Sources/CoreStoreSchema.swift
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@@ -200,35 +200,39 @@ public final class CoreStoreSchema: DynamicSchema {
public func rawModel() -> NSManagedObjectModel {
if let cachedRawModel = self.cachedRawModel {
return CoreStoreSchema.barrierQueue.sync(flags: .barrier) {
return cachedRawModel
}
let rawModel = NSManagedObjectModel()
var entityDescriptionsByEntity: [DynamicEntity: NSEntityDescription] = [:]
for entity in self.allEntities {
if let cachedRawModel = self.cachedRawModel {
return cachedRawModel
}
let rawModel = NSManagedObjectModel()
var entityDescriptionsByEntity: [DynamicEntity: NSEntityDescription] = [:]
for entity in self.allEntities {
let entityDescription = self.entityDescription(
for: entity,
initializer: CoreStoreSchema.firstPassCreateEntityDescription
)
entityDescriptionsByEntity[entity] = (entityDescription.copy() as! NSEntityDescription)
}
CoreStoreSchema.secondPassConnectRelationshipAttributes(for: entityDescriptionsByEntity)
CoreStoreSchema.thirdPassConnectInheritanceTree(for: entityDescriptionsByEntity)
CoreStoreSchema.fourthPassSynthesizeManagedObjectClasses(for: entityDescriptionsByEntity)
let entityDescription = self.entityDescription(
for: entity,
initializer: CoreStoreSchema.firstPassCreateEntityDescription
)
entityDescriptionsByEntity[entity] = (entityDescription.copy() as! NSEntityDescription)
rawModel.entities = entityDescriptionsByEntity.values.sorted(by: { $0.name! < $1.name! })
for (configuration, entities) in self.entitiesByConfiguration {
rawModel.setEntities(
entities
.map({ entityDescriptionsByEntity[$0]! })
.sorted(by: { $0.name! < $1.name! }),
forConfigurationName: configuration
)
}
self.cachedRawModel = rawModel
return rawModel
}
CoreStoreSchema.secondPassConnectRelationshipAttributes(for: entityDescriptionsByEntity)
CoreStoreSchema.thirdPassConnectInheritanceTree(for: entityDescriptionsByEntity)
rawModel.entities = entityDescriptionsByEntity.values.sorted(by: { $0.name! < $1.name! })
for (configuration, entities) in self.entitiesByConfiguration {
rawModel.setEntities(
entities
.map({ entityDescriptionsByEntity[$0]! })
.sorted(by: { $0.name! < $1.name! }),
forConfigurationName: configuration
)
}
self.cachedRawModel = rawModel
return rawModel
}
@@ -264,8 +268,9 @@ public final class CoreStoreSchema: DynamicSchema {
entityDescription.name = entity.entityName
entityDescription.isAbstract = entity.isAbstract
entityDescription.versionHashModifier = entity.versionHashModifier
entityDescription.managedObjectClassName = NSStringFromClass(NSManagedObject.self)
entityDescription.managedObjectClassName = "\(NSStringFromClass(entity.type)).CoreStoreManagedObject"
var keyPathsByAffectedKeyPaths: [KeyPath: Set<KeyPath>] = [:]
func createProperties(for type: CoreStoreObject.Type) -> [NSPropertyDescription] {
var propertyDescriptions: [NSPropertyDescription] = []
@@ -284,6 +289,7 @@ public final class CoreStoreSchema: DynamicSchema {
description.versionHashModifier = attribute.versionHashModifier
description.renamingIdentifier = attribute.renamingIdentifier
propertyDescriptions.append(description)
keyPathsByAffectedKeyPaths[attribute.keyPath] = attribute.affectedByKeyPaths()
case let relationship as RelationshipProtocol:
let description = NSRelationshipDescription()
@@ -295,6 +301,7 @@ public final class CoreStoreSchema: DynamicSchema {
description.versionHashModifier = relationship.versionHashModifier
description.renamingIdentifier = relationship.renamingIdentifier
propertyDescriptions.append(description)
keyPathsByAffectedKeyPaths[relationship.keyPath] = relationship.affectedByKeyPaths()
default:
continue
@@ -302,7 +309,7 @@ public final class CoreStoreSchema: DynamicSchema {
}
return propertyDescriptions
}
entityDescription.keyPathsByAffectedKeyPaths = keyPathsByAffectedKeyPaths
entityDescription.properties = createProperties(for: entity.type as! CoreStoreObject.Type)
return entityDescription
}
@@ -425,4 +432,43 @@ public final class CoreStoreSchema: DynamicSchema {
)
}
}
private static func fourthPassSynthesizeManagedObjectClasses(for entityDescriptionsByEntity: [DynamicEntity: NSEntityDescription]) {
func createManagedObjectSubclass(for entityDescription: NSEntityDescription) {
let superEntity = entityDescription.superentity
let className = entityDescription.managedObjectClassName!
guard case nil = NSClassFromString(className) as! CoreStoreManagedObject.Type? else {
return
}
if let superEntity = superEntity {
createManagedObjectSubclass(for: superEntity)
}
let superClass = cs_lazy { () -> CoreStoreManagedObject.Type in
if let superClassName = superEntity?.managedObjectClassName,
let superClass = NSClassFromString(superClassName) {
return superClass as! CoreStoreManagedObject.Type
}
return CoreStoreManagedObject.self
}
let managedObjectClass = className.withCString {
return objc_allocateClassPair(superClass, $0, 0) as! CoreStoreManagedObject.Type
}
objc_registerClassPair(managedObjectClass)
managedObjectClass.cs_setKeyPathsForValuesAffectingKeys(
entityDescription.keyPathsByAffectedKeyPaths,
for: managedObjectClass
)
}
for (_, entityDescription) in entityDescriptionsByEntity {
createManagedObjectSubclass(for: entityDescription)
}
}
}