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Code Issues 95 Packages Projects Releases 10 Wiki Activity

Improve handling in LiveObject and ObjectSnapshot when objects are deleted

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This commit is contained in:
John Estropia
2019-10-17 19:27:03 +09:00
parent bd066f0cef
commit 6e3e540d0a
9 changed files with 194 additions and 118 deletions
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25
Sources/DynamicObject.swift
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@@ -46,7 +46,7 @@ public protocol DynamicObject: AnyObject {
/**
Used internally by CoreStore. Do not call directly.
*/
static func cs_snapshotDictionary(id: ObjectID, context: NSManagedObjectContext) -> [String: Any]
static func cs_snapshotDictionary(id: ObjectID, context: NSManagedObjectContext) -> [String: Any]?
/**
Used internally by CoreStore. Do not call directly.
@@ -97,11 +97,19 @@ extension NSManagedObject: DynamicObject {
return object
}
public class func cs_snapshotDictionary(id: ObjectID, context: NSManagedObjectContext) -> [String: Any] {
public class func cs_snapshotDictionary(id: ObjectID, context: NSManagedObjectContext) -> [String: Any]? {
let object = context.fetchExisting(id)! as Self
guard let object = context.fetchExisting(id) as NSManagedObject? else {
return nil
}
let rawObject = object.cs_toRaw()
return rawObject.dictionaryWithValues(forKeys: rawObject.entity.properties.map({ $0.name }))
var dictionary = rawObject.dictionaryWithValues(forKeys: Array(rawObject.entity.attributesByName.keys))
for case (let key, let target as NSManagedObject) in rawObject.dictionaryWithValues(forKeys: Array(rawObject.entity.relationshipsByName.keys)) {
dictionary[key] = target.objectID
}
return dictionary
}
public class func cs_fromRaw(object: NSManagedObject) -> Self {
@@ -143,7 +151,7 @@ extension CoreStoreObject {
return self.cs_fromRaw(object: object)
}
public class func cs_snapshotDictionary(id: ObjectID, context: NSManagedObjectContext) -> [String: Any] {
public class func cs_snapshotDictionary(id: ObjectID, context: NSManagedObjectContext) -> [String: Any]? {
func initializeAttributes(mirror: Mirror, object: Self, into attributes: inout [KeyPathString: Any]) {
@@ -170,11 +178,14 @@ extension CoreStoreObject {
}
}
}
let object = context.fetchExisting(id)! as Self
guard let object = context.fetchExisting(id) as CoreStoreObject? else {
return nil
}
var values: [KeyPathString: Any] = [:]
initializeAttributes(
mirror: Mirror(reflecting: object),
object: object,
object: object as! Self,
into: &values
)
return values