added new reflection strategy, lets see if it works in mono.

Marr.Data/Reflection/CachedReflectionStrategy.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Reflection;
 using Fasterflect;
 
@@ -6,13 +7,26 @@ namespace Marr.Data.Reflection
 {
     public class CachedReflectionStrategy : IReflectionStrategy
     {
+        private static readonly Dictionary<string, MemberInfo> MemberCache = new Dictionary<string, MemberInfo>();
+        private static MemberInfo GetMember(Type entityType, string name)
+        {
+            MemberInfo member;
+            var key = entityType.FullName + name;
+            if (!MemberCache.TryGetValue(key, out member))
+            {
+                member = entityType.GetMember(name, BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance)[0];
+                MemberCache[key] = member;
+            }
+
+            return member;
+        }
 
         /// <summary>
         /// Sets an entity field value by name to the passed in 'val'.
         /// </summary>
         public void SetFieldValue<T>(T entity, string fieldName, object val)
         {
-            MemberInfo member = entity.GetType().GetMember(fieldName, BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance)[0];
+            MemberInfo member = GetMember(entity.GetType(), fieldName);
 
             try
             {
@@ -56,7 +70,8 @@ namespace Marr.Data.Reflection
         /// </summary>
         public object GetFieldValue(object entity, string fieldName)
         {
-            MemberInfo member = entity.GetType().GetMember(fieldName, BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance)[0];
+            MemberInfo member = GetMember(entity.GetType(), fieldName);
+
 
             if (member.MemberType == MemberTypes.Field)
             {

NzbDrone.Core/Datastore/DbFactory.cs

@@ -33,7 +33,7 @@ namespace NzbDrone.Core.Datastore
             _migrationController.MigrateToLatest(connectionString, migrationType);
 
 
-            MapRepository.Instance.ReflectionStrategy = new SimpleReflectionStrategy();
+            MapRepository.Instance.ReflectionStrategy = new DelegateReflectionStrategy();
 
             return new Database(() =>
                 {

NzbDrone.Core/Datastore/DelegateReflectionStrategy.cs

@@ -0,0 +1,127 @@
+using System;
+using System.Collections.Generic;
+using System.Linq.Expressions;
+using System.Reflection;
+using Marr.Data.Reflection;
+
+namespace NzbDrone.Core.Datastore
+{
+    public class DelegateReflectionStrategy : IReflectionStrategy
+    {
+        private static readonly Dictionary<string, PropertySetterDelegate> SetterCache = new Dictionary<string, PropertySetterDelegate>();
+        private static readonly Dictionary<string, PropertyGetterDelegate> GetterCache = new Dictionary<string, PropertyGetterDelegate>();
+
+        private static PropertySetterDelegate SetterFunction(Type entityType, string name)
+        {
+            PropertySetterDelegate setter;
+            var key = string.Concat(entityType.FullName, name);
+            if (!SetterCache.TryGetValue(key, out setter))
+            {
+                var setterMember = entityType.GetProperty(name, BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
+                setter = setterMember.GetPropertySetterFn();
+                SetterCache[key] = setter;
+            }
+
+            return setter;
+        }
+
+
+        private static PropertyGetterDelegate GetterFunction(Type entityType, string name)
+        {
+            PropertyGetterDelegate getter;
+            var key = string.Concat(entityType.FullName, name);
+            if (!GetterCache.TryGetValue(key, out getter))
+            {
+                var propertyInfo = entityType.GetProperty(name, BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
+                getter = propertyInfo.GetPropertyGetterFn();
+                GetterCache[key] = getter;
+            }
+
+            return getter;
+        }
+
+
+        public void SetFieldValue<T>(T entity, string fieldName, object val)
+        {
+            SetterFunction(entity.GetType(), fieldName)(entity, val);
+        }
+
+        public object GetFieldValue(object entity, string fieldName)
+        {
+            return GetterFunction(entity.GetType(), fieldName);
+        }
+
+        public object CreateInstance(Type type)
+        {
+            return Activator.CreateInstance(type);
+        }
+
+
+
+    }
+
+    public delegate void PropertySetterDelegate(object instance, object value);
+    public delegate object PropertyGetterDelegate(object instance);
+
+    public static class PropertyInvoker
+    {
+        public static PropertySetterDelegate GetPropertySetterFn(this PropertyInfo propertyInfo)
+        {
+            var propertySetMethod = propertyInfo.GetSetMethod();
+            if (propertySetMethod == null) return null;
+
+#if NO_EXPRESSIONS
+            return (o, convertedValue) =>
+            {
+                propertySetMethod.Invoke(o, new[] { convertedValue });
+                return;
+            };
+#else
+            var instance = Expression.Parameter(typeof(object), "i");
+            var argument = Expression.Parameter(typeof(object), "a");
+
+            var instanceParam = Expression.Convert(instance, propertyInfo.DeclaringType);
+            var valueParam = Expression.Convert(argument, propertyInfo.PropertyType);
+
+            var setterCall = Expression.Call(instanceParam, propertyInfo.GetSetMethod(), valueParam);
+
+            return Expression.Lambda<PropertySetterDelegate>(setterCall, instance, argument).Compile();
+#endif
+        }
+
+        public static PropertyGetterDelegate GetPropertyGetterFn(this PropertyInfo propertyInfo)
+        {
+            var getMethodInfo = propertyInfo.GetGetMethod();
+            if (getMethodInfo == null) return null;
+
+#if NO_EXPRESSIONS
+			return o => propertyInfo.GetGetMethod().Invoke(o, new object[] { });
+#else
+            try
+            {
+                var oInstanceParam = Expression.Parameter(typeof(object), "oInstanceParam");
+                var instanceParam = Expression.Convert(oInstanceParam, propertyInfo.DeclaringType);
+
+                var exprCallPropertyGetFn = Expression.Call(instanceParam, getMethodInfo);
+                var oExprCallPropertyGetFn = Expression.Convert(exprCallPropertyGetFn, typeof(object));
+
+                var propertyGetFn = Expression.Lambda<PropertyGetterDelegate>
+                    (
+                        oExprCallPropertyGetFn,
+                        oInstanceParam
+                    ).Compile();
+
+                return propertyGetFn;
+
+            }
+            catch (Exception ex)
+            {
+                Console.Write(ex.Message);
+                throw;
+            }
+#endif
+        }
+    }
+
+
+}

NzbDrone.Core/NzbDrone.Core.csproj

@@ -220,6 +220,7 @@
     <Compile Include="Datastore\PagingSpec.cs" />
     <Compile Include="Datastore\PagingSpecExtensions.cs" />
     <Compile Include="Datastore\RelationshipExtensions.cs" />
+    <Compile Include="Datastore\DelegateReflectionStrategy.cs" />
     <Compile Include="Datastore\TableMapping.cs" />
     <Compile Include="DecisionEngine\DownloadDecision.cs" />
     <Compile Include="DecisionEngine\IRejectWithReason.cs" />