Model--MJExtension

リファレンスドキュメント
MJExtensionは、辞書とモデルを互いに変換する超軽量級フレーム辞書(JSON)-->モデル(Model)-->辞書(JSON)辞書配列(JSON Array)-->モデル配列(Model Array)-->辞書配列(JSON Array)
MJExtension JSOnModel、Mantleの違い

MJExtension>JSOnModel>Mantle(変換効率)

JSOnModel:すべてのモデルクラスがJSOnModelベースクラスMJExtensionから継承されなければならないことを要求する:特殊なベースクラスを継承する必要はなく、汚染もなく、侵入性もないMantle:すべてのモデルクラスがMTModelベースクラス

から継承されなければならないことを要求する

個人感覚ではMJExtensionの許容誤差がもっと高い

1.辞書回転モデル

typedef enum {
    SexMale,    
    SexFemale} Sex;
@interface User : NSObject
@property (copy, nonatomic) NSString *name;
@property (copy, nonatomic) NSString *icon;
@property (assign, nonatomic) int age;
@property (assign, nonatomic) double height;
@property (strong, nonatomic) NSNumber *money;
@property (assign, nonatomic) Sex sex;
@end

NSDictionary *dict = @{
                        @"name" : @"Jack",                 
                        @"icon" : @"lufy.png",               
                        @"age" : @20,               
                        @"height" : @"1.55",               
                        @"money" : @100.9,               
                        @"sex" : @(SexFemale)            
};
User *user = [User objectWithKeyValues:dict];

2.モデルにネストされたモデル

@interface Status : NSObject
@property (copy, nonatomic) NSString *text;
@property (strong, nonatomic) User *user;
@property (strong, nonatomic) Status *retweetedStatus;
@end

NSDictionary *dict = @{               
@"text" : @"  ，        ！", 
@"user" : @{                   
             @"name" : @"Jack",                   
             @"icon" : @"lufy.png"                
           },               
@"retweetedStatus" : @{                   
                        @"text" : @"       ！",                   
                        @"user" : @{                       
                                    @"name" : @"Rose",                       
                                    @"icon" : @"nami.png"                    
                                   }                
                       }            
};

//      Status  
Status *status = [Status objectWithKeyValues:dict];

3.モデルに配列がある

@interface Ad : NSObject
@property (copy, nonatomic) NSString *image;
@property (copy, nonatomic) NSString *url;
@end

@interface StatusResult : NSObject
/** （    Status  ） */
@property (strong, nonatomic) NSMutableArray *statuses;
/** （    Ad  ） */
@property (strong, nonatomic) NSArray *ads;
@property (strong, nonatomic) NSNumber *totalNumber;
@end

@implementation StatusResult
//   MJExtension  statuses ads      
 + (NSDictionary *)objectClassInArray{    
  return @{         
                @"statuses" : [Status class],         
                @"ads" : [Ad class]   
             };
}
+ (Class)objectClassInArray:(NSString *)propertyName{    
   if ([propertyName isEqualToString:@"statuses"]) {        
          return [Status class];    
} else if ([propertyName isEqualToString:@"ads"]) {        
        return [Ad class]; 
   }    
    return nil;
}
//          2             ，       Status Ad    
+ (NSDictionary *)objectClassInArray{    
    return @{         
              @"statuses" : @"Status",         
              @"ads" : @"Ad"    
            };
}
@end

NSDictionary *dict = @{                       
@"statuses" : @[                           
                @{                                   
                   @"text" : @"       ！",
                   @"user" : @{                                   
                                @"name" : @"Rose",
                                @"icon" : @"nami.png"                                                                                  
                              }                            
                 }, 

                 @{                               
                    @"text" : @"      ", 
                    @"user" : @{                                                                   
                                 @"name" : @"Jack",                                       
                                 @"icon" : @"lufy.png"                               
                               }  
                   } 

                ],                       
 @"ads" :@[                           
           @{                               
              @"image" : @"ad01.png", 
              @"url" : @"http://www.ad01.com"                                                          
            }, 

           @{                               
              @"image" : @"ad02.png",                                   
              @"url" : @"http://www.ad02.com"                           
            }                       
          ],                       
 @"totalNumber" : @"2014"                    
};

         //      StatusResult  
         StatusResult *result = [StatusResult objectWithKeyValues:dict];

         //   statuses        
         for (Status *status in result.statuses) {    
                 NSLog(@"text=%@, name=%@", text, name);
          }
         //   ads        
         for (Ad *ad in result.ads) {    
                 NSLog(@"image=%@, url=%@", ad.image, ad.url);
       }

4.Key値が異なる

@interface Bag : NSObject
@property (copy, nonatomic) NSString *name;
@property (assign, nonatomic) double price;@end@interface Student : NSObject
@property (copy, nonatomic) NSString *ID;
@property (copy, nonatomic) NSString *desc;
@property (copy, nonatomic) NSString *nowName;
@property (copy, nonatomic) NSString *oldName;
@property (copy, nonatomic) NSString *nameChangedTime;
@property (strong, nonatomic) Bag *bag;
@end

@implementation Student
//   MJExtension                 key
+ (NSDictionary *)replacedKeyFromPropertyName{    
     return @{                
               @"ID" : @"id",                
               @"desc" : @"desciption",                
               @"oldName" : @"name.oldName", 
               @"nowName" : @"name.newName",  
               @"nameChangedTime" : @"name.info.nameChangedTime",                                       
               @"bag" : @"other.bag"            
              };
}

@end

NSDictionary *dict = @{                       
                        @"id" : @"20",                       
                        @"desciption" : @"  ",
                        @"name" : @{                                                         
                                     @"newName" : @"lufy", 
                                     @"oldName" : @"kitty",  
                                     @"info" : @{                                                                                                   
                                                  @"nameChangedTime" : @"2013-08"                            
                                                 }                       
                                    },                       
                        @"other" : @{                            
                                      @"bag" : @{                                
                                                  @"name" : @"   ", 
                                                  @"price" : @100.7                                                              
                                                 }                       
                                     }                   
};

//      Student  
Student *stu = [Student objectWithKeyValues:dict];

5.ディクショナリ配列をモデル配列に変換

NSArray *dictArray = @[                       
                        @{                           
                           @"name" : @"Jack",                           
                           @"icon" : @"lufy.png",                        
                         },                       
                        @{                           
                           @"name" : @"Rose",                           
                           @"icon" : @"nami.png",                        
                         }                    
                       ];

//        User    
NSArray *userArray = [User objectArrayWithKeyValuesArray:dictArray];
//   userArray    User    
for (User *user in userArray) {   
      NSLog(@"name=%@, icon=%@", user.name, user.icon);
}

6.モデル辞書

//     
  User *user = [[User alloc] init];
user.name = @"Jack";
user.icon = @"lufy.png";

Status *status = [[Status alloc] init];
status.user = user;
status.text = @"       ！";


//        
NSDictionary *statusDict = status.keyValues;
NSLog(@"%@", statusDict);
/*{ text = "       ！";    
    user = {        
             icon = "lufy.png";        
             name = Jack;    
           };
  }*/

//        
Student *stu = [[Student alloc] init];
stu.ID = @"123";
stu.oldName = @"rose";
stu.nowName = @"jack";
stu.desc = @"handsome";
stu.nameChangedTime = @"2018-09-08";

Bag *bag = [[Bag alloc] init];
bag.name = @"   ";
bag.price = 205;
stu.bag = bag;
NSDictionary *stuDict = stu.keyValues;

7.モデル配列辞書配列

User *user1 = [[User alloc] init];
user1.name = @"Jack";
user1.icon = @"lufy.png";

User *user2 = [[User alloc] init];
user2.name = @"Rose";
user2.icon = @"nami.png";

NSArray *userArray = @[user1, user2];
//            
NSArray *dictArray 
= [User keyValuesArrayWithObjectArray:userArray];