added marr.datamapper source code for easy debugging.

Marr.Data/Mapping/ColumnInfo.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Marr.Data.Mapping
+{
+    public class ColumnInfo : IColumnInfo
+    {
+        public ColumnInfo()
+        {
+            IsPrimaryKey = false;
+            IsAutoIncrement = false;
+            ReturnValue = false;
+            ParamDirection = System.Data.ParameterDirection.Input;
+        }
+
+        public string Name { get; set; }
+        public string AltName { get; set; }
+        public int Size { get; set; }
+        public bool IsPrimaryKey { get; set; }
+        public bool IsAutoIncrement { get; set; }
+        public bool ReturnValue { get; set; }
+        public System.Data.ParameterDirection ParamDirection { get; set; }
+
+        public string TryGetAltName()
+        {
+            if (!string.IsNullOrEmpty(AltName) && AltName != Name)
+            {
+                return AltName;
+            }
+            else
+            {
+                return Name;
+            }
+        }
+    }
+}