IPP>MOD missing attribute to map job-uri to printer-uri

IPP>MOD missing attribute to map job-uri to printer-uri

IPP>MOD missing attribute to map job-uri to printer-uri

Robert Herriot Robert.Herriot at Eng.Sun.COM
Fri Jul 25 16:43:50 EDT 1997


As I am writing the LPD gateway document, I just realized that
we have no way to determine the printer that a job is on.


The problem occurs when the IPP-to-LPD mapper receives a Cancel-Job.
The operation contains the job-uri only, but the LPD remove-jobs 
command requires a printer-name as the target and the job-number as
a parameter.  The mapping of the job-uri to a job-number is a separate
difficult issue. 


Because the job-uri is opaque, the mapper cannot determine
the corresponding printer from it.  I see two possible solutions:


  o add a mandatory job description attribute called "printer-uri" which
    references the printer containing the job.


  o make all commands have the printer-uri as the target with
    the job-uri as a parameter for operations that currently go to a job.
    This eliminates the need to map from a job to a printer because
    all operations include the printer-uri from which jobs can be obtained. 



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