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
else if ( IReportElementConstants.AUTOTEXT_AUTHOR_PAGE_DATE.equalsIgnoreCase( template )
				|| IReportElementConstants.AUTOTEXT_CONFIDENTIAL_PAGE.equalsIgnoreCase( template )
				|| IReportElementConstants.REPORT_ELEMENT_GRID.equalsIgnoreCase( template ) )
		{
			preHandle = new GridToolExtends( );
		}
		else if ( IReportElementConstants.REPORT_ELEMENT_LABEL.equalsIgnoreCase( template ) )
		{
			preHandle = new LabelToolExtends( );
		}
		else if ( IReportElementConstants.REPORT_ELEMENT_DATA.equalsIgnoreCase( template ) )
		{
			preHandle = new DataToolExtends( );
		}
		else if ( IReportElementConstants.REPORT_ELEMENT_LIST.equalsIgnoreCase( template ) )
		{
			preHandle = new ListToolExtends( );
		}
		else if ( ( template ).startsWith( IReportElementConstants.REPORT_ELEMENT_EXTENDED ) )
		{
			String extensionName = template.substring( IReportElementConstants.REPORT_ELEMENT_EXTENDED.length( ) );
			preHandle = new ExtendedElementToolExtends( extensionName );
		}
		if ( preHandle == null )
		{
			throw new Error( "Don't find the AbstractToolHandleExtends" ); 
		}
		return preHandle;
	}
}