Added reader extensions.

AmalgamationTool/DynamORM.Amalgamation.cs

@@ -11485,6 +11485,126 @@ namespace DynamORM
             void Dispose(bool disposing);
         }
     
+        public static class ReaderExtensions
+        {
+            public static bool? GetBooleanIfNotNull(this IDataReader r, string name, bool? def = null)
+            {
+                var ord = r.GetOrdinal(name);
+                if (r.IsDBNull(ord))
+                    return def;
+    
+                return r.GetBoolean(ord);
+            }
+    
+            public static byte? GetByteIfNotNull(this IDataReader r, string name, byte? def = null)
+            {
+                var ord = r.GetOrdinal(name);
+                if (r.IsDBNull(ord))
+                    return def;
+    
+                return r.GetByte(ord);
+            }
+    
+            public static char? GetCharIfNotNull(this IDataReader r, string name, char? def = null)
+            {
+                var ord = r.GetOrdinal(name);
+                if (r.IsDBNull(ord))
+                    return def;
+    
+                return r.GetChar(ord);
+            }
+    
+            public static DateTime? GetDateTimeIfNotNull(this IDataReader r, string name, DateTime? def = null)
+            {
+                var ord = r.GetOrdinal(name);
+                if (r.IsDBNull(ord))
+                    return def;
+    
+                return r.GetDateTime(ord);
+            }
+    
+            public static decimal? GetDecimalIfNotNull(this IDataReader r, string name, decimal? def = null)
+            {
+                var ord = r.GetOrdinal(name);
+                if (r.IsDBNull(ord))
+                    return def;
+    
+                return r.GetDecimal(ord);
+            }
+    
+            public static double? GetDoubleIfNotNull(this IDataReader r, string name, double? def = null)
+            {
+                var ord = r.GetOrdinal(name);
+                if (r.IsDBNull(ord))
+                    return def;
+    
+                return r.GetDouble(ord);
+            }
+    
+            public static float? GetFloatIfNotNull(this IDataReader r, string name, float? def = null)
+            {
+                var ord = r.GetOrdinal(name);
+                if (r.IsDBNull(ord))
+                    return def;
+    
+                return r.GetFloat(ord);
+            }
+    
+            public static Guid? GetGuidIfNotNull(this IDataReader r, string name, Guid? def = null)
+            {
+                var ord = r.GetOrdinal(name);
+                if (r.IsDBNull(ord))
+                    return def;
+    
+                return r.GetGuid(ord);
+            }
+    
+            public static short? GetInt16IfNotNull(this IDataReader r, string name, short? def = null)
+            {
+                var ord = r.GetOrdinal(name);
+                if (r.IsDBNull(ord))
+                    return def;
+    
+                return r.GetInt16(ord);
+            }
+    
+            public static int? GetInt32IfNotNull(this IDataReader r, string name, int? def = null)
+            {
+                var ord = r.GetOrdinal(name);
+                if (r.IsDBNull(ord))
+                    return def;
+    
+                return r.GetInt32(ord);
+            }
+    
+            public static long? GetInt64IfNotNull(this IDataReader r, string name, long? def = null)
+            {
+                var ord = r.GetOrdinal(name);
+                if (r.IsDBNull(ord))
+                    return def;
+    
+                return r.GetInt64(ord);
+            }
+    
+            public static string GetStringIfNotNull(this IDataReader r, string name, string def = null)
+            {
+                var ord = r.GetOrdinal(name);
+                if (r.IsDBNull(ord))
+                    return def;
+    
+                return r.GetString(ord);
+            }
+    
+            public static object GetValueIfNotNull(this IDataReader r, string name, object def = null)
+            {
+                var ord = r.GetOrdinal(name);
+                if (r.IsDBNull(ord))
+                    return def;
+    
+                return r.GetValue(ord);
+            }
+        }
+    
         /// <summary>Class containing useful string extensions.</summary>
         internal static class StringExtensions
         {
@@ -13968,7 +14088,7 @@ namespace DynamORM
                     throw new InvalidOperationException("Enumerables of enumerables are not supported");
     
                 Column = attr;
-
+    
                 if (attr != null && attr.AllowNull && !Type.IsNullableType() && Type != typeof(string))
                     attr.AllowNull = false;