From 01d4db4e51903e65dd7926a6a5e6d48747f52366 Mon Sep 17 00:00:00 2001
From: Steve Bohlen <sbohlen@gmail.com>
Date: Tue, 3 Feb 2015 02:10:54 -0500
Subject: [PATCH] avoid repeated calls to GetObjectNamesForType in
 DependencyResolver

---
 .../SpringMvcDependencyResolver.cs             | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/src/Spring/Spring.Web.Mvc3/SpringMvcDependencyResolver.cs b/src/Spring/Spring.Web.Mvc3/SpringMvcDependencyResolver.cs
index 65043652..f18f15a7 100644
--- a/src/Spring/Spring.Web.Mvc3/SpringMvcDependencyResolver.cs
+++ b/src/Spring/Spring.Web.Mvc3/SpringMvcDependencyResolver.cs
@@ -27,6 +27,7 @@ namespace Spring.Web.Mvc
 
         private static readonly ILog logger = LogManager.GetLogger(typeof(SpringMvcDependencyResolver));
         private readonly ConcurrentBag<Type> _nonResolvableTypes = new ConcurrentBag<Type>();
+        private readonly ConcurrentDictionary<Type, string> _resolvedNames = new ConcurrentDictionary<Type, string>();
 
         /// <summary>
         /// Initializes a new instance of the <see cref="SpringMvcDependencyResolver"/> class.
@@ -103,11 +104,20 @@ namespace Spring.Web.Mvc
                 }
                 else
                 {
-                    // fall back to more expensive searching with type
-                    var matchingServices = ApplicationContext.GetObjectNamesForType(serviceType);
-                    if (matchingServices.Count > 0)
+                    string resolvedName;
+                    if (_resolvedNames.TryGetValue(serviceType, out resolvedName))
                     {
-                        service = ApplicationContext.GetObject(matchingServices[0]);
+                        service = ApplicationContext.GetObject(resolvedName);
+                    }
+                    else
+                    {
+                        // fall back to more expensive searching with type
+                        var matchingServices = ApplicationContext.GetObjectNamesForType(serviceType);
+                        if (matchingServices.Count > 0)
+                        {
+                            _resolvedNames.TryAdd(serviceType, matchingServices[0]);
+                            service = ApplicationContext.GetObject(matchingServices[0]);
+                        }
                     }
                 }