Bug 190058 icon for aggregation type data items.
For aggregation type data items in cross tabs, we should show the icon instead of the sigma symbol. I am attaching the icon to replace it
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/editparts/DataEditPart.java
{
		DataItemHandle handle = (DataItemHandle) getModel( );
		String name = handle.getResultSetColumn( );
		if (name == null)
		{
			return false;
		}
		ComputedColumnHandle bindingColumn = DEUtil.getInputBinding( handle, name );
		if (bindingColumn == null)
		{
			return false;
		}
		if (bindingColumn.getAggregateFunction( ) != null)
		{
			return true;
		}
		return false;
	}
	
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.designer.internal.ui.editors.schematic.editparts.LabelEditPart#hasText()
	 */
	protected boolean hasText( )
	{
		String text = ( (DataItemHandle) getModel( ) ).getResultSetColumn( );
		return ( text != null && text.length( ) > 0 );
	}
}