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https://github.com/ibireme/YYModel

High performance model framework for iOS/OSX.
https://github.com/ibireme/YYModel
Last synced: 22 days ago
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High performance model framework for iOS/OSX.
Host: GitHub
URL: https://github.com/ibireme/YYModel
Owner: ibireme
License: mit
Created: 2015-10-22T17:30:43.000Z (about 9 years ago)
Default Branch: master
Last Pushed: 2022-12-21T11:22:17.000Z (almost 2 years ago)
Last Synced: 2024-05-23T00:02:00.584Z (6 months ago)
Language: Objective-C
Homepage:
Size: 898 KB
Stars: 4,337
Watchers: 104
Forks: 919
Open Issues: 135
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project

README

        YYModel

==============

[![License MIT](https://img.shields.io/badge/license-MIT-green.svg?style=flat)](https://raw.githubusercontent.com/ibireme/YYModel/master/LICENSE) 

[![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage) 

[![CocoaPods](http://img.shields.io/cocoapods/v/YYModel.svg?style=flat)](http://cocoapods.org/pods/YYModel) 

[![CocoaPods](http://img.shields.io/cocoapods/p/YYModel.svg?style=flat)](http://cocoadocs.org/docsets/YYModel) 

[![Build Status](https://travis-ci.org/ibireme/YYModel.svg?branch=master)](https://travis-ci.org/ibireme/YYModel) 

[![codecov.io](https://codecov.io/github/ibireme/YYModel/coverage.svg?branch=master)](https://codecov.io/github/ibireme/YYModel?branch=master)

High performance model framework for iOS/OSX.


(It's a component of [YYKit](https://github.com/ibireme/YYKit))

Performance

==============

Time cost (process GithubUser 10000 times on iPhone 6):

![Benchmark result](https://raw.github.com/ibireme/YYModel/master/Benchmark/Result.png

)

See `Benchmark/ModelBenchmark.xcodeproj` for more benchmark case.

Features

==============

- **High performance**: The conversion performance is close to handwriting code.

- **Automatic type conversion**: The object types can be automatically converted.

- **Type Safe**: All data types will be verified to ensure type-safe during the conversion process.

- **Non-intrusive**: There is no need to make the model class inherit from other base class.

- **Lightwight**: This library contains only 5 files.

- **Docs and unit testing**: 100% docs coverage, 99.6% code coverage.

Usage

==============

### Simple model json convert

```objc

// JSON:

{

    "uid":123456,

    "name":"Harry",

    "created":"1965-07-31T00:00:00+0000"

}

// Model:

@interface User : NSObject

@property UInt64 uid;

@property NSString *name;

@property NSDate *created;

@end

@implementation User

@end

	

// Convert json to model:

User *user = [User yy_modelWithJSON:json];

	

// Convert model to json:

NSDictionary *json = [user yy_modelToJSONObject];

```

If the type of an object in JSON/Dictionary cannot be matched to the property of the model, the following automatic conversion is performed. If the automatic conversion failed, the value will be ignored.

  

    

      JSON/Dictionary

      Model

    

  

  

    

      NSString

      NSNumber,NSURL,SEL,Class

    

    

      NSNumber

      NSString

    

    

      NSString/NSNumber

      C number (BOOL,int,float,NSUInteger,UInt64,...)


      NaN and Inf will be ignored

    

    

      NSString

      NSDate parsed with these formats:


      yyyy-MM-dd


yyyy-MM-dd HH:mm:ss


yyyy-MM-dd'T'HH:mm:ss


yyyy-MM-dd'T'HH:mm:ssZ


EEE MMM dd HH:mm:ss Z yyyy

      

    

    

      NSDate

      NSString formatted with ISO8601:


      "YYYY-MM-dd'T'HH:mm:ssZ"

    

    

      NSValue

      struct (CGRect,CGSize,...)

    

    

      NSNull

      nil,0

    

    

      "no","false",...

      @(NO),0

    

    

      "yes","true",...

      @(YES),1

    

  

### Match model property to different JSON key

```objc

// JSON:

{

    "n":"Harry Pottery",

    "p": 256,

    "ext" : {

        "desc" : "A book written by J.K.Rowing."

    },

    "ID" : 100010

}

// Model:

@interface Book : NSObject

@property NSString *name;

@property NSInteger page;

@property NSString *desc;

@property NSString *bookID;

@end

@implementation Book

+ (NSDictionary *)modelCustomPropertyMapper {

    return @{@"name" : @"n",

             @"page" : @"p",

             @"desc" : @"ext.desc",

             @"bookID" : @[@"id",@"ID",@"book_id"]};

}

@end

```

You can map a json key (key path) or an array of json key (key path) to one or multiple property name. If there's no mapper for a property, it will use the property's name as default.

### Nested model

```objc

// JSON

{

    "author":{

        "name":"J.K.Rowling",

        "birthday":"1965-07-31T00:00:00+0000"

    },

    "name":"Harry Potter",

    "pages":256

}

// Model: (no need to do anything)

@interface Author : NSObject

@property NSString *name;

@property NSDate *birthday;

@end

@implementation Author

@end

	

@interface Book : NSObject

@property NSString *name;

@property NSUInteger pages;

@property Author *author;

@end

@implementation Book

@end

```

### Container property

```objc

@class Shadow, Border, Attachment;

@interface Attributes

@property NSString *name;

@property NSArray *shadows; //Array

@property NSSet *borders; //Set

@property NSMutableDictionary *attachments; //Dict

@end

@implementation Attributes

+ (NSDictionary *)modelContainerPropertyGenericClass {

	// value should be Class or Class name.

    return @{@"shadows" : [Shadow class],

             @"borders" : Border.class,

             @"attachments" : @"Attachment" };

}

@end

```

### Whitelist and blacklist

```objc

@interface User

@property NSString *name;

@property NSUInteger age;

@end

	

@implementation Attributes

+ (NSArray *)modelPropertyBlacklist {

    return @[@"test1", @"test2"];

}

+ (NSArray *)modelPropertyWhitelist {

    return @[@"name"];

}

@end

```

### Data validate and custom transform

```objc

// JSON:

{

	"name":"Harry",

	"timestamp" : 1445534567

}

	

// Model:

@interface User

@property NSString *name;

@property NSDate *createdAt;

@end

@implementation User

- (BOOL)modelCustomTransformFromDictionary:(NSDictionary *)dic {

    NSNumber *timestamp = dic[@"timestamp"];

    if (![timestamp isKindOfClass:[NSNumber class]]) return NO;

    _createdAt = [NSDate dateWithTimeIntervalSince1970:timestamp.floatValue];

    return YES;

}

- (BOOL)modelCustomTransformToDictionary:(NSMutableDictionary *)dic {

    if (!_createdAt) return NO;

    dic[@"timestamp"] = @(n.timeIntervalSince1970);

    return YES;

}

@end

```

### Coding/Copying/hash/equal/description

```objc

@interface YYShadow :NSObject 

@property (nonatomic, copy) NSString *name;

@property (nonatomic, assign) CGSize size;

@end

@implementation YYShadow

- (void)encodeWithCoder:(NSCoder *)aCoder { [self yy_modelEncodeWithCoder:aCoder]; }

- (id)initWithCoder:(NSCoder *)aDecoder { self = [super init]; return [self yy_modelInitWithCoder:aDecoder]; }

- (id)copyWithZone:(NSZone *)zone { return [self yy_modelCopy]; }

- (NSUInteger)hash { return [self yy_modelHash]; }

- (BOOL)isEqual:(id)object { return [self yy_modelIsEqual:object]; }

- (NSString *)description { return [self yy_modelDescription]; }

@end

```

Installation

==============

### CocoaPods

1. Add `pod 'YYModel'` to your Podfile.

2. Run `pod install` or `pod update`.

3. Import \.

### Carthage

1. Add `github "ibireme/YYModel"` to your Cartfile.

2. Run `carthage update --platform ios` and add the framework to your project.

3. Import \.

### Manually

1. Download all the files in the YYModel subdirectory.

2. Add the source files to your Xcode project.

3. Import `YYModel.h`.

Documentation

==============

Full API documentation is available on [CocoaDocs](http://cocoadocs.org/docsets/YYModel/).


You can also install documentation locally using [appledoc](https://github.com/tomaz/appledoc).

Requirements

==============

This library requires `iOS 6.0+` and `Xcode 8.0+`.

License

==============

YYModel is provided under the MIT license. See LICENSE file for details.





---

中文介绍

==============

高性能 iOS/OSX 模型转换框架。


(该项目是 [YYKit](https://github.com/ibireme/YYKit) 组件之一)

性能

==============

处理 GithubUser 数据 10000 次耗时统计 (iPhone 6):

![Benchmark result](https://raw.github.com/ibireme/YYModel/master/Benchmark/Result.png

)

更多测试代码和用例见 `Benchmark/ModelBenchmark.xcodeproj`。

特性

==============

- **高性能**: 模型转换性能接近手写解析代码。

- **自动类型转换**: 对象类型可以自动转换，详情见下方表格。

- **类型安全**: 转换过程中，所有的数据类型都会被检测一遍，以保证类型安全，避免崩溃问题。

- **无侵入性**: 模型无需继承自其他基类。

- **轻量**: 该框架只有 5 个文件 (包括.h文件)。

- **文档和单元测试**: 文档覆盖率100%, 代码覆盖率99.6%。

使用方法

==============

### 简单的 Model 与 JSON 相互转换

```objc

// JSON:

{

    "uid":123456,

    "name":"Harry",

    "created":"1965-07-31T00:00:00+0000"

}

// Model:

@interface User : NSObject

@property UInt64 uid;

@property NSString *name;

@property NSDate *created;

@end

@implementation User

@end

	

// 将 JSON (NSData,NSString,NSDictionary) 转换为 Model:

User *user = [User yy_modelWithJSON:json];

	

// 将 Model 转换为 JSON 对象:

NSDictionary *json = [user yy_modelToJSONObject];

```

当 JSON/Dictionary 中的对象类型与 Model 属性不一致时，YYModel 将会进行如下自动转换。自动转换不支持的值将会被忽略，以避免各种潜在的崩溃问题。

  

    

      JSON/Dictionary

      Model

    

  

  

    

      NSString

      NSNumber,NSURL,SEL,Class

    

    

      NSNumber

      NSString

    

    

      NSString/NSNumber

      基础类型 (BOOL,int,float,NSUInteger,UInt64,...)


      NaN 和 Inf 会被忽略

    

    

      NSString

      NSDate 以下列格式解析:


      yyyy-MM-dd


yyyy-MM-dd HH:mm:ss


yyyy-MM-dd'T'HH:mm:ss


yyyy-MM-dd'T'HH:mm:ssZ


EEE MMM dd HH:mm:ss Z yyyy

      

    

    

      NSDate

      NSString 格式化为 ISO8601:


      "YYYY-MM-dd'T'HH:mm:ssZ"

    

    

      NSValue

      struct (CGRect,CGSize,...)

    

    

      NSNull

      nil,0

    

    

      "no","false",...

      @(NO),0

    

    

      "yes","true",...

      @(YES),1

    

  

### Model 属性名和 JSON 中的 Key 不相同

```objc

// JSON:

{

    "n":"Harry Pottery",

    "p": 256,

    "ext" : {

        "desc" : "A book written by J.K.Rowing."

    },

    "ID" : 100010

}

// Model:

@interface Book : NSObject

@property NSString *name;

@property NSInteger page;

@property NSString *desc;

@property NSString *bookID;

@end

@implementation Book

//返回一个 Dict，将 Model 属性名对映射到 JSON 的 Key。

+ (NSDictionary *)modelCustomPropertyMapper {

    return @{@"name" : @"n",

             @"page" : @"p",

             @"desc" : @"ext.desc",

             @"bookID" : @[@"id",@"ID",@"book_id"]};

}

@end

```

	

你可以把一个或一组 json key (key path) 映射到一个或多个属性。如果一个属性没有映射关系，那默认会使用相同属性名作为映射。

在 json->model 的过程中：如果一个属性对应了多个 json key，那么转换过程会按顺序查找，并使用第一个不为空的值。

	

在 model->json 的过程中：如果一个属性对应了多个 json key (key path)，那么转换过程仅会处理第一个 json key (key path)；如果多个属性对应了同一个 json key，则转换过过程会使用其中任意一个不为空的值。

### Model 包含其他 Model

```objc

// JSON

{

    "author":{

        "name":"J.K.Rowling",

        "birthday":"1965-07-31T00:00:00+0000"

    },

    "name":"Harry Potter",

    "pages":256

}

// Model: 什么都不用做，转换会自动完成

@interface Author : NSObject

@property NSString *name;

@property NSDate *birthday;

@end

@implementation Author

@end

	

@interface Book : NSObject

@property NSString *name;

@property NSUInteger pages;

@property Author *author; //Book 包含 Author 属性

@end

@implementation Book

@end

```	

### 容器类属性

```objc

@class Shadow, Border, Attachment;

@interface Attributes

@property NSString *name;

@property NSArray *shadows; //Array

@property NSSet *borders; //Set

@property NSMutableDictionary *attachments; //Dict

@end

@implementation Attributes

// 返回容器类中的所需要存放的数据类型 (以 Class 或 Class Name 的形式)。

+ (NSDictionary *)modelContainerPropertyGenericClass {

    return @{@"shadows" : [Shadow class],

             @"borders" : Border.class,

             @"attachments" : @"Attachment" };

}

@end

```

### 黑名单与白名单

```objc

@interface User

@property NSString *name;

@property NSUInteger age;

@end

	

@implementation Attributes

// 如果实现了该方法，则处理过程中会忽略该列表内的所有属性

+ (NSArray *)modelPropertyBlacklist {

    return @[@"test1", @"test2"];

}

// 如果实现了该方法，则处理过程中不会处理该列表外的属性。

+ (NSArray *)modelPropertyWhitelist {

    return @[@"name"];

}

@end

```

### 数据校验与自定义转换

```objc	

// JSON:

{

	"name":"Harry",

	"timestamp" : 1445534567

}

	

// Model:

@interface User

@property NSString *name;

@property NSDate *createdAt;

@end

@implementation User

// 当 JSON 转为 Model 完成后，该方法会被调用。

// 你可以在这里对数据进行校验，如果校验不通过，可以返回 NO，则该 Model 会被忽略。

// 你也可以在这里做一些自动转换不能完成的工作。

- (BOOL)modelCustomTransformFromDictionary:(NSDictionary *)dic {

    NSNumber *timestamp = dic[@"timestamp"];

    if (![timestamp isKindOfClass:[NSNumber class]]) return NO;

    _createdAt = [NSDate dateWithTimeIntervalSince1970:timestamp.floatValue];

    return YES;

}

	

// 当 Model 转为 JSON 完成后，该方法会被调用。

// 你可以在这里对数据进行校验，如果校验不通过，可以返回 NO，则该 Model 会被忽略。

// 你也可以在这里做一些自动转换不能完成的工作。

- (BOOL)modelCustomTransformToDictionary:(NSMutableDictionary *)dic {

    if (!_createdAt) return NO;

    dic[@"timestamp"] = @(n.timeIntervalSince1970);

    return YES;

}

@end

```

### Coding/Copying/hash/equal/description

```objc

@interface YYShadow :NSObject 

@property (nonatomic, copy) NSString *name;

@property (nonatomic, assign) CGSize size;

@end

@implementation YYShadow

// 直接添加以下代码即可自动完成

- (void)encodeWithCoder:(NSCoder *)aCoder { [self yy_modelEncodeWithCoder:aCoder]; }

- (id)initWithCoder:(NSCoder *)aDecoder { self = [super init]; return [self yy_modelInitWithCoder:aDecoder]; }

- (id)copyWithZone:(NSZone *)zone { return [self yy_modelCopy]; }

- (NSUInteger)hash { return [self yy_modelHash]; }

- (BOOL)isEqual:(id)object { return [self yy_modelIsEqual:object]; }

- (NSString *)description { return [self yy_modelDescription]; }

@end

```

安装

==============

### CocoaPods

1. 在 Podfile 中添加 `pod 'YYModel'`。

2. 执行 `pod install` 或 `pod update`。

3. 导入 \。

### Carthage

1. 在 Cartfile 中添加 `github "ibireme/YYModel"`。

2. 执行 `carthage update --platform ios` 并将生成的 framework 添加到你的工程。

3. 导入 \。

### 手动安装

1. 下载 YYModel 文件夹内的所有内容。

2. 将 YYModel 内的源文件添加(拖放)到你的工程。

3. 导入 `YYModel.h`。

文档

==============

你可以在 [CocoaDocs](http://cocoadocs.org/docsets/YYModel/) 查看在线 API 文档，也可以用 [appledoc](https://github.com/tomaz/appledoc) 本地生成文档。

系统要求

==============

该项目最低支持 `iOS 6.0` 和 `Xcode 8.0`。

许可证

==============

YYModel 使用 MIT 许可证，详情见 LICENSE 文件。

相关链接

==============

[iOS JSON 模型转换库评测](https://blog.ibireme.com/2015/10/23/ios_model_framework_benchmark/)