added marr.datamapper source code for easy debugging.

Marr.Data/Mapping/RelationshipCollection.cs

@@ -0,0 +1,37 @@
+/*  Copyright (C) 2008 - 2011 Jordan Marr
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 3 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library. If not, see <http://www.gnu.org/licenses/>. */
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Marr.Data.Mapping
+{
+    public class RelationshipCollection : List<Relationship>
+    {
+        /// <summary>
+        /// Gets a ColumnMap by its field name.
+        /// </summary>
+        /// <param name="fieldName"></param>
+        /// <returns></returns>
+        public Relationship this[string fieldName]
+        {
+            get
+            {
+                return this.Find(m => m.Member.Name == fieldName);
+            }
+        }
+    }
+}