IPP> Unsupported 'requested-attributes' quest

IPP> Unsupported 'requested-attributes' quest

IPP> Unsupported 'requested-attributes' quest

Carl Kugler kugler at us.ibm.com
Mon Oct 5 11:16:41 EDT 1998


> My opinion is that the second proposal must be the right solution
> I.e.
> >attr-tag=value-tag-keyword
> >attr-name='requested-attributes'
> >attr-value='printer-info'
> >attr-value='printer-location'
> 
> Then we have a consistent. When the requested attribute is
> 'requested-attributes'
> and the values e.g are 'printer-info' and 'printer-location', then I think,
> the IPP Printer should return the value it doesn't support. The same
> behavior as other
> attribute with unsupported attributes.
> 
> /HOLST
> 

In general, I agree that this is the right solution.  However, I'm concerned about the example given.  I don't know what language it's in, but in IPP the syntax tag is applies to an individual attribute value, not a whole attribute.  So it should be rewritten as

    attr-name='requested-attributes'
    value-tag=keyword
    attr-value='printer-info'
    value-tag=keyword
    attr-value='printer-location'


> 
> 
> 
> In Savannah we agreed that in the operations get-job-attributes, get-jobs,
> and get-printer-attributes, if the 'requested-attributes' attribute
> contains values specifying attributes not supported by the printer, the
> printer SHALL return status code
> 'successful-ok-ignored-or-substituted-attributes' and MAY return these
> attributes in the 'unsupported-attributes' group.  My question is, if the
> printer chooses to list the attributes as unsupported in the response,
> which of the following formats should it use (suppose the printer doesn't
> support 'printer-info' and 'printer-location'):
> 
> attr-tag=value-tag-unsupported
> attr-name='printer-info'
> attr-value=NULL
> 
> attr-tag=value-tag-unsupported
> attr-name='printer-location'
> attr-value=NULL
> 
> - or -
> 
> attr-tag=value-tag-keyword
> attr-name='requested-attributes'
> attr-value='printer-info'
> attr-value='printer-location'
> 
> 
> -Hugo
> 
> 
> 
> 
> 
> 



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