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POImplementing a Service Locator with injected variations of Generic Type
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  1. POImplementing a Service Locator with injected variations of Generic Type
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    copied!<p>I have the following: </p> <pre><code>public interface IConverter&lt;TValue, TConverted&gt; { } public interface IConverterProvider { IConverter&lt;TValue, TConverted&gt; GetConverter&lt;TValue, TConverted&gt;(); } </code></pre> <p>With an example binding at setup: </p> <pre><code>Bind&lt;IConverter&lt;System.Int32, System.String&gt;&gt;().To&lt;Int32ToStringConverter&gt;(); Bind&lt;IConverter&lt;System.Guid, System.String&gt;&gt;().To&lt;GuidToStringConverter&gt;(); </code></pre> <p>So I have a collection of fixed converters and no duplicate bindings. </p> <p><strong>[Question]</strong> My question is how do I go about implementing the IConverterProvider and injecting a dictionary of available bindings mapped to singletons? Or in other words, how to avoid the run-time service-locator pattern. </p> <p>Currently I'm just using the NInject kernel to resolve each time, but I believe this an anti-pattern. What I would like is something like this: </p> <pre><code>public class ConverterProvider : IConverterProvider { private Dictionary&lt;Type, object&gt; _converters; public ConverterProvider(Dictionary&lt;Type, object&gt; converters) { _converters = converters; } public IConverter&lt;TValue, TConverted&gt; GetConverter&lt;TValue, TConverted&gt;() { var fullTypeResolve = typeof (IConverter&lt;,&gt;).MakeGenericType(typeof (TValue), typeof (TConverted)); return _converters.Where(x =&gt; x.Key == fullTypeResolve).Select(x=&gt;x.Value).Cast&lt;IConverter&lt;TValue, TConverted&gt;&gt;().Single(); } } </code></pre> <p>But this effectively requires that I'm able to resolve and get a list of all IConverter&lt;,> from the dependency injection kernel, and my previous attempts of doing this from NInject haven't been successful. </p>
 

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