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POCastle Windsor Fluent API: Define Array with Single item as Dependency
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  1. POCastle Windsor Fluent API: Define Array with Single item as Dependency
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    copied!<p>Given this XML configuration (which works)</p> <pre><code>&lt;component type="X.Y.Z.ActivityService, X.Y.Z.Services" id="X.Y.Z.ActivityService" lifestyle="transient"&gt; &lt;parameters&gt; &lt;Listeners&gt; &lt;array&gt; &lt;item&gt;${DefaultActivityListener}&lt;/item&gt; &lt;/array&gt; &lt;/Listeners&gt; &lt;/parameters&gt; &lt;/component&gt; &lt;component type="X.Y.Z.DefaultActivityListener, X.Y.Z.Services" id="DefaultActivityListener" lifestyle="transient" /&gt; </code></pre> <p>I have converted to use the fluent API as below (which doesn't work):</p> <pre><code>Container.Register( Component.For&lt;X.Y.Z.ActivityService&gt;() .ServiceOverrides( ServiceOverride.ForKey("Listeners").Eq(typeof(X.Y.Z.DefaultActivityListener).Name)) .LifeStyle.Transient ); Container.Register( Component.For&lt;X.Y.Z.DefaultActivityListener&gt;() .Named("DefaultActivityListener") .LifeStyle.Transient ); </code></pre> <p>When I now attempt to resolve an instance of <code>X.Y.Z.ActivityService</code> Windsor throws a <code>NotImplementedException</code> in <code>Castle.MicroKernel.SubSystems.Conversion.ArrayConverter.PerformConversion(String, Type)</code>. </p> <p>The implementation of the PerformConversion method is:</p> <pre><code>public override object PerformConversion(String value, Type targetType) { throw new NotImplementedException(); } </code></pre> <p>I should add that if I remove the <code>ServiceOverrides</code> call, all behaves as expected. So there is specifically something wrong in the way I am wiring up the Listeners parameter. Listeners by the way is a property as opposed to a constructor parameter.</p> <p>Seeing as the XML config works as expected how do I best use the fluent API (short of implementing the PerformConversion method) in order to achieve the same result?</p> <p>I am using Release 2.0.</p> <p>EDIT</p> <p>I will extend the question to how would you achieve this configuration in code, with or without use of the fluent API.</p> <p>UPDATE</p> <p>It appears the problem occurs if you attempt to assign a single element to an array property. Unit tests provided below to illustrate issue.</p> <pre><code>namespace Components { public class A { public I[] I { get; set; } } public interface I { string Name { get; } } public class B : I { public string Name { get { return "B"; } } } public class C : I { public string Name { get { return "C"; } } } } [TestMethod] public void ArrayPropertyTestApi() { //PASSES using (Castle.Windsor.WindsorContainer container = new Castle.Windsor.WindsorContainer()) { container.Register(Component.For&lt;Components.A&gt;().ServiceOverrides(ServiceOverride.ForKey("I").Eq(typeof(Components.B).FullName, typeof(Components.C).FullName))); container.Register(Component.For&lt;Components.B&gt;()); container.Register(Component.For&lt;Components.C&gt;()); Components.A svc = container.Resolve&lt;Components.A&gt;(); Assert.IsTrue(svc.I.Length == 2); Assert.IsTrue(svc.I[0].Name == "B"); Assert.IsTrue(svc.I[1].Name == "C"); } } [TestMethod] public void ArrayPropertyTestApi2() { //FAILS using (Castle.Windsor.WindsorContainer container = new Castle.Windsor.WindsorContainer()) { container.Register(Component.For&lt;Components.A&gt;().ServiceOverrides(ServiceOverride.ForKey("I").Eq(typeof(Components.B).FullName))); container.Register(Component.For&lt;Components.B&gt;()); container.Register(Component.For&lt;Components.C&gt;()); Components.A svc = container.Resolve&lt;Components.A&gt;(); //Throws NotImplementedException Assert.IsTrue(svc.I.Length == 1); Assert.IsTrue(svc.I[0].Name == "B"); } } </code></pre> <p>Question still stands.</p> <p>Thanks.</p>
 

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