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/palette/BasePaletteFactory.java
text = AUTOTEXT_LABEL_FILENAME + reportHandle.getFileName( );
				}
				else if ( IReportElementConstants.AUTOTEXT_LASTPRINTED.equalsIgnoreCase( type ) )
				{
					text = AUTOTEXT_LABEL_LAST_PRINTED
							+ "<value-of>new Date()</value-of>"; 
					textItemHandle.setContentType( DesignChoiceConstants.TEXT_CONTENT_TYPE_HTML );
				}
				else if ( IReportElementConstants.AUTOTEXT_PAGEXOFY.equalsIgnoreCase( type ) )
				{
					text = AUTOTEXT_LABEL_PAGE_X_OF_Y;
				}
				else if ( !IReportElementConstants.REPORT_ELEMENT_TEXT.equalsIgnoreCase( type ) )
				{
					return false;
				}
				if ( text != null )
				{
					textItemHandle.setContent( text );
				}
			}
			catch ( SemanticException e )
			{
				ExceptionHandler.handle( e );
			}
			setModel( textItemHandle );
			return super.preHandleMouseUp( );
		} /*
			 * (non-Javadoc)
			 *