Bug 135497 Data Type is not correct when "Generate All" for Data item
Description: Create a sample datasource and dataset. Insert a data into layout, bind with the dataset.Click "Generate All" to get the Data Binding columns, but the displayed data type is not consistent with the actual one.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/tools/ReportCreationTool.java
if ( command != null && command.canExecute( ) )
				{
					if ( !preHandle.preHandleMouseUp( ) )
					{
						
						
						SessionHandleAdapter.getInstance( )
								.getReportDesignHandle( )
								.getCommandStack( )
								.rollback( );
						handleFinished( );
						return;
					}
				}
			}
		}
		super.performCreation( button );
		SessionHandleAdapter.getInstance( )
				.getReportDesignHandle( )
				.getCommandStack( )
				.commit( );
		selectAddedObject( );
		isCreating = false;
	}
	/**
	 * Performs the creation. Runs the creation via simulating the mouse move event.
	 * 
	 * @param editPart
	 *            the current EditPart
	 */