If no customerized crosstab update listener set, we should perform

default creation/validation operation.

xtab/org.eclipse.birt.report.item.crosstab.core/src/org/eclipse/birt/report/item/crosstab/core/de/internal/CrosstabModelUtil.java

@@ -175,6 +175,16 @@ public static void notifyCreation( int type, Object model,
 				listener.onCreated( type, model );
 			}
 		}
+		else
+		{
+			try
+			{
+				// Perform default creation action
+				new DefaultCrosstabUpdateContext( ).performDefaultCreation( type, model, extras );
+			}
+			catch ( SemanticException e )
+			{}
+		}
 	}
 
 	/**
@@ -203,6 +213,16 @@ public static void notifyValidate( int type, Object model,
 				listener.onValidate( type, model );
 			}
 		}
+		else
+		{
+			try
+			{
+				// Perform default validation action
+				new DefaultCrosstabUpdateContext( ).performDefaultValidation( type, model, extras );
+			}
+			catch ( SemanticException e )
+			{}
+		}
 	}
 
 	/**