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README.md

NP.Roxy New Powerful Roxy IoC container and Code Generator

Name Explanation

The name of the package "Roxy" is a mix of two words: "Roslyn" and "Proxy" (even though I intend to make this package much more than a just a proxy generator).

Cloning the Repository

I started using the submodules, so, in order to clone the repository, you need to use the following command:

git clone https://github.com/npolyak/NP.Roxy.git --recursive -b version_0.9 NP.Roxy

Why and What is Roxy

The main purpose of Roxy is to introduce a better separation of concerns and correspondingly simplify the code.

Here are the tasks that the Roxy package addresses now and in the future.

Now:

  • Converting an interface into a class using built-in conversion or easily created custom conversion mechanisms.
  • Creating adaptors that adapt multiple classes to an interface or an abstract class or both.
  • Achieving a greater separation of concerns by mixing behaviors with the objects that they modify.
  • Easily accessing non-public properties and methods of 3rd party components.
  • Creating smart mixins and allowing to easily swap implementations of the wrapped parts. This greatly enhances testing - e.g. you will be able to easily swap the real backend connection for a mock one.

In the future I plan to make Roxy a full blown IoC container. In particular it will allow:

  • Resolving interfaces and abstract classes to concrete pre-specified (or generated) types.
  • Producing singleton objects.
  • Easily replacing interface or abstract class implementation with a different one. Also, in the future I plan to remove some of the current Roxy limitations:
  • Allowing to generate generic (not fully resolved) classes for generic interfaces.
  • Allowing to deal with classes and interface that use method overloading.

I plan to publish a number of articles on the codeproject.com describing Roxy usage in much more detail. Here is the first article of the series Introducing Roxy: Powerful Proxy Generation and IoC Container Package

Below are a few samples previewing what one can do with Roxy:

Creating a default implementation for an interface:

IPerson person = Core.Concretize<IPerson>();

person.FirstName = "Joe";
person.LastName = "Doe";
person.Age = 35;
person.Profession = "Astronaut";

// test that the properties have indeed been assigned. 
Console.WriteLine($"Name='{person.FirstName} {person.LastName}'; Age='{person.Age}'; Profession='{person.Profession}'");  

Adapting a Class to an Interface including the Non-Public Members of the Class

IPerson person = 
    Core.CreateWrapperWithNonPublicMembers<IPerson, PersonImplementationWrapperInterface>("MyPersonImplementation"); 
    
// set the properties
person.FirstName = "Joe";
person.LastName = "Doe";
person.Age = 35;
person.Profession = "Astronaut";

// test that the wrapped properties and the method work
Console.WriteLine($"Name/Profession='{person.GetFullNameAndProfession()}'; Age='{person.Age}'");  

Adapting an Enumeration to an Interface using Static Extension (possibly Non-Public) Methods of the Enumeration

// we create an adaptor adapting ProductKind enumeration
// to IProduct interface using extension methods from the static 
// ProductKindExtensions class
Core.CreateEnumerationAdapter<IProduct, ProductKind>(typeof(ProductKindExtensions));

// enumeration value ProductKind.FinancialInstrument is converted into
// IProduct interface
IProduct product =
    Core.CreateEnumWrapper<IProduct, ProductKind>(ProductKind.FinancialInstrument);

// we test the methods of the resulting object that implements IProduct interface.
Console.WriteLine($"product: {product.GetDisplayName()}; Description: {product.GetDescription()}");
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