PocoEmit.Collections 0.6.2.1-alpha

Emit集合扩展

复制和转化集合对象

一、Mapper启用集合扩展

1. 对单个Mapper启用集合扩展

Mapper.Default.UseCollection();

2. 全局启用集合扩展

CollectionContainer.GlobalUseCollection();

二、转化

1. 直接转化

调用Convert方法

User[] source = [new User { Id = 1, Name = "Jxj" }, new User { Id = 2, Name = "张三" }];
IList<UserDTO> result = _mapper.Convert<User[], IList<UserDTO>>(source);

Dictionary<int, User> source = new() { { 1, new User { Id = 1, Name = "Jxj" } } };
Dictionary<int, UserDTO> result = _mapper.Convert<Dictionary<int, User>, Dictionary<int, UserDTO>>(source);

List<User> source = [new User { Id = 1, Name = "Jxj" }, new User { Id = 2, Name = "张三" }];
Dictionary<int, UserDTO> result = _mapper.Convert<List<User>, Dictionary<int, UserDTO>>(source);

2. 用委托

调用GetConvertFunc方法

IList<User> source = [new User { Id = 1, Name = "Jxj" }, new User { Id = 2, Name = "张三" }];
var converter = _mapper.GetConvertFunc<IList<User>, UserDTO[]>();
UserDTO[] result = converter(source);

3. 用接口

调用GetConverter方法

IList<AutoUserDTO> source = [new AutoUserDTO { UserId = "222", UserName = "Jxj" }, new AutoUserDTO { UserId = "333", UserName = "李四" }];
var converter = mapper.GetConverter<IList<AutoUserDTO>, User[]>();
var result = converter.Convert(source);

三、复制

1. 直接复制

调用Copy方法

User[] source = [new User { Id = 1, Name = "Jxj" }, new User { Id = 2, Name = "张三" }];
List<UserDTO> result = [];
_mapper.Copy(source, result);

2. 用委托

调用GetCopyAction方法

User[] source = [new User { Id = 1, Name = "Jxj" }, new User { Id = 2, Name = "张三" }];
List<UserDTO> result = [];
var copyAction = _mapper.GetCopyAction<User[], List<UserDTO>>();
copyAction(source, result);

3. 用接口

调用GetCopier方法

AutoUserDTO[] source = [new AutoUserDTO { UserId = "222", UserName = "Jxj" }, new AutoUserDTO { UserId = "333", UserName = "李四" }];
IList<User> result = [];
var copier = mapper.GetCopier<AutoUserDTO[], IList<User>>();
copier.Copy(source, result);

四、字典复制强化

1. DictionaryCopy方法

复制实体成员到object字典

User user = new() { Id = 3, Name = "张三" };
var dic = new Dictionary<string, object>();
_mapper.DictionaryCopy(user, dic);

2. GetDictionaryCopyAction方法

复制实体成员到object字典

var action = _mapper.GetDictionaryCopyAction<User>();
User user = new() { Id = 3, Name = "张三" };
var dic = new Dictionary<string, object>();
action(user, dic);

3. CreatetDictionaryCopyAction方法

• 委托编译生成,重复使用需要缓存
• 递归复制指定类型成员
• 支持同类型字典
• 不支持数组和其他集合
• 相当于彻底平铺展开

var action = _mapper.CreatetDictionaryCopyAction<Student, Dictionary<string, string>>();
Student source = new()
{
    User = new() { Id = 2, Name = "Jxj" },
    Role = "班长",
    Skills = new() { { "足球", "很好" }, { "篮球", "优秀" } }
};
var result = new Dictionary<string, string>();
action(source, result);
// result.Count == 4

var action = _mapper.CreatetDictionaryCopyAction<Student, Dictionary<string, int>>();
Student source = new()
{
    User = new() { Id = 2, Name = "Jxj" },
    Age = 17,
    Scores = new() { { "语文", 95 }, { "数学", 96 } }
};
var dic = new Dictionary<string, int>();
action(source, dic);
// result.Count == 4

4. CreatetDictionaryCopyAction重载方法

• 委托编译生成,重复使用需要缓存
• 递归复制指定类型成员并转化为另一类型
• 支持同类型数组
• 不支持数组和其他集合
• 相当于彻底平铺展开

var action = _mapper.CreatetDictionaryCopyAction<Student, int, IDictionary<string, string>>();
Assert.NotNull(action);
Student source = new()
{
    User = new() { Id = 2, Name = "Jxj" },
    Age = 17,
    Scores = new() { { "语文", 95 }, { "数学", 96 } }
};
var dic = new Dictionary<string, string>();
action(source, dic);
// result.Count == 4

五、字典转化强化

1. ToDictionary

实体成员转化为object字典

User user = new() { Id = 3, Name = "张三" };
IDictionary<string, object> dic = _mapper.ToDictionary(user);

2. GetToDictionaryFunc

实体成员转化为object字典

var func = _mapper.GetToDictionaryFunc<User>();
User user = new() { Id = 3, Name = "张三" };
IDictionary<string, object> dic = func(user);

3. FromDictionary

object字典转化为实体

Dictionary<string, object> dic = new() { { nameof(User.Id), "3" }, { nameof(User.Name), "张三" } };
User user = _mapper.FromDictionary<User>(dic);

4. GetFromDictionaryFunc

object字典转化为实体

var func = _mapper.GetFromDictionaryFunc<User>();
Dictionary<string, object> dic = new() { { nameof(User.Id), "3" }, { nameof(User.Name), "张三" } };
User user = func(dic);

5. CreateDictionaryConvertFunc

• 委托编译生成,重复使用需要缓存
• 递归转化指定类型成员为字典
• 支持同类型字典
• 不支持数组和其他集合
• 相当于彻底平铺展开

var func = _mapper.CreateDictionaryConvertFunc<Student, Dictionary<string, int>>();
Student source = new()
{
    User = new() { Id = 2, Name = "Jxj" },
    Age = 17,
    Scores = new() { { "语文", 95 }, { "数学", 96 } }
};
Dictionary<string, int> result = func(source);
// result.Count == 4

6. CreateDictionaryConvertFunc重载方法

• 委托编译生成,重复使用需要缓存
• 递归转化指定类型成员为字典
• 支持同类型字典
• 不支持数组和其他集合
• 相当于彻底平铺展开

var func = _mapper.CreateDictionaryConvertFunc<Student, int, IDictionary<string, string>>();
Student source = new()
{
    User = new() { Id = 2, Name = "Jxj" },
    Age = 17,
    Scores = new() { { "语文", 95 }, { "数学", 96 } }
};
IDictionary<string, string> result = func(source);
// result.Count == 4