AutoCopy

AutoCopy is a tool that reduces development time and helps programmers get out of some heavy human coding, which is inspired by AutoMapper.

Document

Chinese

Dependencies

• Mono.Reflection.dll
• DelegateDecompiler.dll

Attribute

1. Fast execution
2. Based on the abstract class TargetExpressionProviderBase can be any extension
3. Support automatic / manual type conversion
4. Support for multiple instances of AutoCopy nesting

Benchmark

iterations:100,000

Action	mean time(ms)
hand map	4.267375
AutoCopy	4.18163333333333
AutoMapper	42.4985

iterations:1,000,000

Action	mean time(ms)
hand map	30.884225
AutoCopy	38.647675
AutoMapper	322.8877

iterations:10,000,000

Action	mean time(ms)
hand map	440.14825
AutoCopy	459.17575
AutoMapper	3895.974725

Benchmark code see here

Example

1 Same type of object copyed

    public class Address
    {
        public string ZipCode { get; set; }
    }

    var autoCopy = AutoCopy.CreateMap<Address, Address>();

    autoCopy.Register();

    Address a=new Address { ZipCode="1234567890"; };

    Address b=autoCopy.Map(a);

2 Different type of object copyed

    public class Address
    {
        public string ZipCode { get; set; }
    }

    public class Telephone
    {
        public string Number { get; set; }
    }

    public class Customer
    {
        public Address Address { get; set; }
        public Telephone Phone { get; set; }
        public string Memo { get; set; }
    }

    public class CustomerInfo
    {
        public string zipCode { get; set; }
        public string PhoneNumber { get; set; }
        public string Memo { get; set; }
    }

    var autoCopy = AutoCopy.CreateMap<Customer, CustomerInfo>();

    autoCopy
        .ForMember(p => p.zipCode, opt => opt.MapFrom(p => p.Address.ZipCode))
        .ForMember(p => p.PhoneNumber, opt => opt.MapFrom(p => p.Phone.Number));

    autoCopy.Register();

    Customer customer = new Customer();
    
    customer.Address = new Address { ZipCode = "1234567890" };
    
    customer.Phone = new Telephone { Number = "17791704580" };
    
    customer.Memo = "Test";
    
    CustomerInfo info = autoCopy.Map(customer);

3 Multiple AutoCopy instances nested

    public class Data
    {
        public int width { get; set; }
        public int height { get; set; }
        public string ua { get; set; }
        public string ip { get; set; }
        public string imei { get; set; }
        public string android_id { get; set; }
        public string make { get; set; }
        public string model { get; set; }
        public string os { get; set; }
        public string osv { get; set; }
        public int connectionType { get; set; }
        public int deviceType { get; set; }
        public string mac { get; set; }
        public int screenWidth { get; set; }
        public int screenHeight { get; set; }
        public string appName { get; set; }
        public int ppi { get; set; }
        public string dpidsha1 { get; set; }
        public string plmn { get; set; }
        public string orientation { get; set; }
        public int pos { get; set; }
        public bool instl { get; set; }
        public string ver { get; set; }
        public string bundle { get; set; }
        public Ext ext { get; set; }
    }
    public class Ext
    {
        public int ID { get; set; }
    }

    string surl = "id=10010&width=10&height=10&ua=ua&ip=127.0.0.1&imei=00000000000000&android_id=A00000000000000&make=1111111111&model=XXX&os=android&osv=4.0.1&connectionType=1&deviceType=1&mac=0.0.0.0.0.0.0&screenWidth=100&screenHeight=100&appName=test&ppi=600&dpidsha1=dpidsha1&plmn=1&orientation=1&pos=1&instl=true&ver=1.0.0&bundle=bundle";

    HttpQueryCollection collection = new HttpQueryCollection(surl, false);

    var ac = AutoCopy.CreateMap<NameValueCollection, Ext>();

    ac.Provider= new HttpRequestParamsExpressionProvider(typeof(NameValueCollection));

    var autoCopy = AutoCopy.CreateMap<NameValueCollection, Data>();

    autoCopy.ForMember(p => p.ext, opt => opt.MapFrom(p=>ac.Map(p)));

    autoCopy.Provider = new HttpRequestParamsExpressionProvider(typeof(NameValueCollection));

    autoCopy.Register();

    Data data=autoCopy.Map(collection);

Type Convert

Automatic conversion

The TryConvert method of the internal class TypeConverter performs automatic conversion of the type in the following order：

1. Whether there is a explicit operator
2. Whether there is a implicit operator
3. Whether it is a subclass
4. Whether there is the Convert.ToXXX method
5. Whether there is the TryParse method on the target type
6. Call Convert.ChangeType method

Manual conversion

Type conversions are registered by calling the ForTypeConvert<T1, T2> method of the AutoCopy<T, D> instance.

Explanation of Parameter in TryGetExpression method

With AutoCopy<T1, T2>, assume T1 is the source type and T2 is the destination type

	Parameter Name	Description
1	name	destination property name
2	parameter	Expression of source parameter Expression
3	destType	destination type
4	exp	the final Expression
5	variable	variables
6	test	test Expression
7	ifTrue	Whether need to test or not; If the value is true, then only the test Expression executed return true can exp Expression will be called

ChangeLog

2017-12-05 Add a demo which show the DataRow class convert to entity class
2017-12-12 Adjust the order of parameters in AutoCopy<,> and fixed the parameter type bug in Option.ResolveUsing
2017-12-26 Add the CopyMapAttribute attribute to support alias mapping of destination type property
2017-12-27 Add the CopyRequiredAttribute attribute to support the detection of the destination type property map value is required to be empty [Need further testing]
2017-12-28 Get a new LambdaExpression from the Decompiler function when another AutoCopy instance is called in the Option.MapFrom function
2018-01-12 Overload the Option.MapForm function, add a string parameter indicating the target's property name or mapping name
2018-02-09 fixed bug: When the CopyRequired attribute is applied to a property that requires nested mapping of an AutoCopy instance, called the Visit function of ConditionFalseRewriter class would cause error

Warning

Since AutoCopy uses reflection at runtime to analysis the properties of classes by calling Register methods automatically, bugs may occur if the source code is obfuscated.