5 // Created by Hori,Masaki on 2017/02/22.
6 // Copyright © 2017年 Hori,Masaki. All rights reserved.
12 struct MappingConfiguration<T: NSManagedObject> {
15 let dataKeys: [String]
16 let primaryKeys: [String]
17 let editorStore: CoreDataAccessor
18 let ignoreKeys: [String]
20 init(entity: Entity<T>,
21 dataKeys: [String] = ["api_data"],
22 primaryKeys: [String] = ["id"],
23 editorStore: CoreDataAccessor,
24 ignoreKeys: [String] = []) {
27 self.dataKeys = dataKeys
28 self.primaryKeys = primaryKeys
29 self.editorStore = editorStore
30 self.ignoreKeys = ignoreKeys
36 associatedtype ObjectType: NSManagedObject
38 init(_ apiResponse: APIResponse)
40 var apiResponse: APIResponse { get }
41 var configuration: MappingConfiguration<ObjectType> { get }
43 func registerElement(_ element: JSON, to object: ObjectType)
45 func beginRegister(_ object: ObjectType)
46 func handleExtraValue(_ value: JSON, forKey key: String, to object: ObjectType) -> Bool
47 func finishOperating()
51 // delete api_ prefix.
52 func keyByDeletingPrefix() -> String {
54 if self.count < 5 { return self }
56 return String(self[index(startIndex, offsetBy: 4)...])
60 extension JSONMapper {
62 var data: JSON { return apiResponse.json[configuration.dataKeys] }
64 private func isEqual(_ lhs: AnyObject?, _ rhs: AnyObject?) -> Bool {
66 if lhs == nil, rhs == nil { return true }
67 if let lhs = lhs, let rhs = rhs { return lhs.isEqual(rhs) }
72 func setValueIfNeeded(_ value: JSON, to object: ObjectType, forKey key: String) {
74 var validValue = value.object as AnyObject?
77 try object.validateValue(&validValue, forKey: key)
84 let old = object.value(forKey: key)
85 if !isEqual(old as AnyObject?, validValue) {
87 object.setValue(validValue, forKey: key)
91 func registerElement(_ element: JSON, to object: ObjectType) {
94 element.forEach { (key, value) in
96 if configuration.ignoreKeys.contains(key) { return }
97 if handleExtraValue(value, forKey: key, to: object) { return }
101 value.array?.enumerated().forEach {
103 let newKey = "\(key)_\($0.offset)"
104 setValueIfNeeded($0.element, to: object, forKey: newKey)
108 value.forEach { (subKey: String, subValue) in
110 let newKey = "\(key)_D_\(subKey.keyByDeletingPrefix())"
111 setValueIfNeeded(subValue, to: object, forKey: newKey)
115 setValueIfNeeded(value, to: object, forKey: key)
120 private var sortDescriptors: [NSSortDescriptor] {
122 return configuration.primaryKeys.map { NSSortDescriptor(key: $0, ascending: true) }
125 private func objectSearch(_ objects: [ObjectType], _ element: JSON) -> ObjectType? {
127 let keyPiar = configuration.primaryKeys.map { (key: $0, apiKey: "api_\($0)") }
129 return objects.binarySearch {
131 // TODO: replace to forEach
132 for piar in keyPiar {
134 guard let v1 = $0.value(forKey: piar.key) else { return .orderedAscending }
136 if element[piar.apiKey].type == .null { return .orderedDescending }
138 let v2 = element[piar.apiKey].object
140 return (v1 as AnyObject).compare(v2)
143 return .orderedDescending
149 let store = configuration.editorStore
151 guard let objects = try? store.objects(of: configuration.entity, sortDescriptors: sortDescriptors) else {
153 return Logger.shared.log("Can not get entity named \(configuration.entity.name)")
156 let list = (data.type == .array ? data.arrayValue : [data])
159 if let object = objectSearch(objects, $0) {
161 registerElement($0, to: object)
163 } else if let new = store.insertNewObject(for: configuration.entity) {
165 registerElement($0, to: new)
169 fatalError("Can not get entity named \(configuration.entity.name)")
174 store.save(errorHandler: store.presentOnMainThread)
177 func beginRegister(_ object: ObjectType) {}
179 func handleExtraValue(_ value: JSON, forKey key: String, to object: ObjectType) -> Bool {
184 func finishOperating() {}