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POInjecting Dependencies into Domain Model classes with Nhibernate (ASP.NET MVC + IOC)
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  1. POInjecting Dependencies into Domain Model classes with Nhibernate (ASP.NET MVC + IOC)
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    copied!<p>I'm building an ASP.NET MVC application that uses a DDD (Domain Driven Design) approach with database access handled by NHibernate. I have domain model class (Administrator) that I want to inject a dependency into via an IOC Container such as Castle Windsor, something like this:</p> <pre><code>public class Administrator { public virtual int Id { get; set; } //.. snip ..// public virtual string HashedPassword { get; protected set; } public void SetPassword(string plainTextPassword) { IHashingService hasher = IocContainer.Resolve&lt;IHashingService&gt;(); this.HashedPassword = hasher.Hash(plainTextPassword); } } </code></pre> <p>I basically want to inject IHashingService for the SetPassword method without calling the IOC Container directly (because this is suppose to be an IOC Anti-pattern). But I'm not sure how to go about doing it. My Administrator object either gets instantiated via <code>new Administrator();</code> or it gets loaded via NHibernate, so how would I inject the IHashingService into the Administrator class?</p> <p>On second thoughts, am I going about this the right way? I was hoping to avoid having my codebase littered with...</p> <pre><code>currentAdmin.Password = HashUtils.Hash(password, Algorithm.Sha512); </code></pre> <p>...and instead get the domain model itself to take care of hashing and neatly encapsulate it away. I can envisage another developer accidently choosing the wrong algorithm and having some passwords as Sha512, and some as MD5, some with one salt, and some with a different salt etc. etc. Instead if developers are writing...</p> <pre><code>currentAdmin.SetPassword(password); </code></pre> <p>...then that would hide those details away and take care of those problems listed above would it not?</p>
 

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