Changed the ILookup resolution, now that DocumentRequest object contains everything to do the lookups

we don't have to create each ILookup per request, these can exist one  per application.

src/Umbraco.Web/PluginResolverExtensions.cs

@@ -8,33 +8,49 @@ using umbraco.BusinessLogic.Utils;
 namespace Umbraco.Web
 {
 	/// <summary>
-    /// Extension methods for the PluginResolver
-    /// </summary>
-    public static class PluginResolverExtensions
-    {
+	/// Extension methods for the PluginResolver
+	/// </summary>
+	public static class PluginResolverExtensions
+	{
 
-        private static volatile IEnumerable<Type> _lookups;
-        private static readonly object Locker = new object();
+		private static volatile IEnumerable<ILookup> _lookups;
+		private static readonly object Locker = new object();
 
-        /// <summary>
-        /// Returns all available ILookup objects
-        /// </summary>
-        /// <param name="plugins"></param>
-        /// <returns></returns>
-        internal static IEnumerable<Type> ResolveLookups(this PluginResolver plugins)
-        {
-            if (_lookups == null)
-            {
-                lock(Locker)
-                {
-                    if (_lookups == null)
-                    {
-						_lookups = TypeFinder.FindClassesOfType<ILookup>();   
-                    }
-                }
-            }
-            return _lookups;
-        }
+		/// <summary>
+		/// Returns all available ILookup objects
+		/// </summary>
+		/// <param name="plugins"></param>
+		/// <returns></returns>
+		internal static IEnumerable<ILookup> ResolveLookups(this PluginResolver plugins)
+		{
+			if (_lookups == null)
+			{
+				lock (Locker)
+				{
+					if (_lookups == null)
+					{
+						var lookupTypes = TypeFinder.FindClassesOfType<ILookup>();
+						var lookups = new List<ILookup>();
+						foreach (var l in lookupTypes)
+						{
+							try
+							{
+								var typeInstance = Activator.CreateInstance(l) as ILookup;
+								lookups.Add(typeInstance);
+							}
+							catch (Exception ex)
+							{
+								//TODO: Need to fix logging so this doesn't bork if no SQL connection
+								//Log.Add(LogTypes.Error, -1, "Error loading ILookup: " + ex.ToString());
+							}
+						}
+						//set the global
+						_lookups = lookups;
+					}
+				}
+			}
+			return _lookups;
+		}
 
-    }
+	}
 }