Merge pull request #143 from manuel-sugawara/fix-idatacommand

DR-145 Add the ReadAsDataSet method to the IDataCommand interface

src/mindtouch.dream.test/Data/MockDataCatalog.cs

@@ -337,6 +337,10 @@ public class MockDataCommand : IDataCommand {
                 throw new NotImplementedException();
             }
 
+            DataSet IDataCommand.ReadAsDataSet() {
+                throw new NotImplementedException();
+            }
+
             List<T> IDataCommand.ReadAsObjects<T>() {
                 throw new NotImplementedException();
             }

src/mindtouch.dream/Data/IDataCommand.cs

@@ -186,5 +186,11 @@ public interface IDataCommand {
         /// <typeparam name="T">Object type to create</typeparam>
         /// <returns>List of created objects</returns>
         List<T> ReadAsObjects<T>() where T : new();
+
+        /// <summary>
+        /// Execute command and read result into a DataSet.
+        /// </summary>
+        /// <returns>Read DataSet object</returns>
+        DataSet ReadAsDataSet();
     }
 }