BIS-21 SP-107 refactor wrapping a transaction to a separate method

SVN: 25771

datastore_server/source/java/ch/systemsx/cisd/etlserver/registrator/api/v2/JythonTopLevelDataSetHandlerV2.java

@@ -248,7 +248,7 @@ public class JythonTopLevelDataSetHandlerV2<T extends DataSetInformation> extend
             {
                 throw new IllegalStateException("Undefined process() function");
             }
-            IDataSetRegistrationTransactionV2 v2transaction = new DataSetRegistrationTransactionV2Delegate(transaction);
+            IDataSetRegistrationTransactionV2 v2transaction = wrapTransaction(transaction);
             invokeFunction(function, v2transaction);
         } catch (Exception e)
         {
@@ -256,6 +256,16 @@ public class JythonTopLevelDataSetHandlerV2<T extends DataSetInformation> extend
         }
     }
 
+    /**
+     * Wraps the transaction - to hide methods which we don't want to expose in the api.
+     */
+    protected IDataSetRegistrationTransactionV2 wrapTransaction(
+            IDataSetRegistrationTransaction transaction)
+    {
+        IDataSetRegistrationTransactionV2 v2transaction = new DataSetRegistrationTransactionV2Delegate(transaction);
+        return v2transaction;
+    }
+
     @Override
     protected boolean shouldUseOldJythonHookFunctions()
     {