Smart Printer Pfd selection

[Dave smith]

I have a printer that will accept a pdf document directly. Our application sometimes sends text files and sometimes generates pdf. The application has no idea of the printer type (ie. does the printer support the direct print pdf option). Is it possible to setup cups so that if a print queue is passed a pdf it prints it directly without converting to postscript first? But in the case of a plain text file it does the conversion to ps.