[Structuremap-commits] SF.net SVN: structuremap:[252] trunk/Source/StructureMap

[<jer...@us...>]

Revision: 252
          http://structuremap.svn.sourceforge.net/structuremap/?rev=252&view=rev
Author:   jeremydmiller
Date:     2009-07-04 17:12:20 +0000 (Sat, 04 Jul 2009)

Log Message:
-----------
the redirect shortcut

Modified Paths:
--------------
    trunk/Source/StructureMap/Configuration/DSL/Registry.cs
    trunk/Source/StructureMap.Testing/StructureMap.Testing.csproj

Added Paths:
-----------
    trunk/Source/StructureMap.Testing/Pipeline/RedirectTester.cs

Modified: trunk/Source/StructureMap/Configuration/DSL/Registry.cs
===================================================================
--- trunk/Source/StructureMap/Configuration/DSL/Registry.cs	2009-06-26 14:34:44 UTC (rev 251)
+++ trunk/Source/StructureMap/Configuration/DSL/Registry.cs	2009-07-04 17:12:20 UTC (rev 252)
@@ -410,5 +410,26 @@
         {
             return ForRequestedType(pluginType);
         }
+
+
+        /// <summary>
+        /// Shortcut to make StructureMap return the default object of U casted to T
+        /// whenever T is requested.  I.e.:
+        /// For<T>().TheDefault.Is.ConstructedBy(c => c.GetInstance<U>() as T);
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <typeparam name="U"></typeparam>
+        /// <returns></returns>
+        public ConstructorInstance<T> Redirect<T, U>() where T : class where U : class
+        {
+            return For<T>().TheDefault.Is.ConstructedBy(c =>
+            {
+                var raw = c.GetInstance<U>();
+                var t = raw as T;
+                if (t == null) throw new ApplicationException(raw.GetType().AssemblyQualifiedName + " could not be cast to " + typeof(T).AssemblyQualifiedName);
+
+                return t;
+            });            
+        }
     }
 }
\ No newline at end of file

Added: trunk/Source/StructureMap.Testing/Pipeline/RedirectTester.cs
===================================================================
--- trunk/Source/StructureMap.Testing/Pipeline/RedirectTester.cs	                        (rev 0)
+++ trunk/Source/StructureMap.Testing/Pipeline/RedirectTester.cs	2009-07-04 17:12:20 UTC (rev 252)
@@ -0,0 +1,53 @@
+using System;
+using NUnit.Framework;
+
+namespace StructureMap.Testing.Pipeline
+{
+    [TestFixture]
+    public class RedirectTester
+    {
+        [Test]
+        public void successfully_redirect_from_one_type_to_another()
+        {
+            var container = new Container(x =>
+            {
+                x.For<ITarget>().Use<ClassThatImplementsBoth>();
+                x.Redirect<IOtherTarget, ITarget>();
+            });
+
+            container.GetInstance<IOtherTarget>().ShouldBeOfType<ClassThatImplementsBoth>();
+        }
+
+        [Test, ExpectedException(typeof(StructureMapException))]
+        public void fail_with_cast_failure_when_the_types_are_not_convertible()
+        {
+            var container = new Container(x =>
+            {
+                x.For<ITarget>().Use<ClassThatOnlyImplementsITarget>();
+                x.Redirect<IOtherTarget, ITarget>();
+            });
+
+            container.GetInstance<IOtherTarget>().ShouldBeOfType<ClassThatImplementsBoth>();
+        }
+    }
+
+    public interface ITarget
+    {
+        
+    }
+
+    public interface IOtherTarget
+    {
+        
+    }
+
+    public class ClassThatImplementsBoth : ITarget, IOtherTarget
+    {
+        
+    }
+
+    public class ClassThatOnlyImplementsITarget : ITarget
+    {
+        
+    }
+}
\ No newline at end of file

Modified: trunk/Source/StructureMap.Testing/StructureMap.Testing.csproj
===================================================================
--- trunk/Source/StructureMap.Testing/StructureMap.Testing.csproj	2009-06-26 14:34:44 UTC (rev 251)
+++ trunk/Source/StructureMap.Testing/StructureMap.Testing.csproj	2009-07-04 17:12:20 UTC (rev 252)
@@ -361,6 +361,7 @@
     <Compile Include="Pipeline\ProfileManagerTester.cs" />
     <Compile Include="Pipeline\ProfileTester.cs" />
     <Compile Include="Pipeline\PrototypeInstanceTester.cs" />
+    <Compile Include="Pipeline\RedirectTester.cs" />
     <Compile Include="Pipeline\ReferencedInstanceTester.cs" />
     <Compile Include="Pipeline\SerializedInstanceTester.cs" />
     <Compile Include="Pipeline\SmartInstanceTester.cs" />


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