Class JobKOctets is an integer valued printing attribute class that specifies
the total size of the document(s) in K octets, i.e., in units of 1024 octets
requested to be processed in the job.
Class JobKOctets is an integer valued printing attribute class that specifies
the total size of the document(s) in K octets, i.e., in units of 1024 octets
requested to be processed in the job. The value must be rounded up, so that a
job between 1 and 1024 octets must be indicated as being 1K octets, 1025 to
2048 must be 2K octets, etc. For a multidoc print job (a job with multiple
documents), the JobKOctets value is computed by adding up the individual
documents' sizes in octets, then rounding up to the next K octets value.
The JobKOctets attribute describes the size of the job. This attribute is not
intended to be a counter; it is intended to be useful routing and scheduling
information if known. The printer may try to compute the JobKOctets
attribute's value if it is not supplied in the Print Request. Even if the
client does supply a value for the JobKOctets attribute in the Print Request,
the printer may choose to change the value if the printer is able to compute
a value which is more accurate than the client supplied value. The printer
may be able to determine the correct value for the JobKOctets attribute
either right at job submission time or at any later point in time.
The JobKOctets value must not include the multiplicative factors contributed
by the number of copies specified by the Copies
attribute,
independent of whether the device can process multiple copies without making
multiple passes over the job or document data and independent of whether the
output is collated or not. Thus the value is independent of the
implementation and indicates the size of the document(s) measured in K octets
independent of the number of copies.
The JobKOctets value must also not include the multiplicative factor due to a
copies instruction embedded in the document data. If the document data
actually includes replications of the document data, this value will include
such replication. In other words, this value is always the size of the source
document data, rather than a measure of the hardcopy output to be produced.
The size of a doc is computed based on the print data representation class as
specified by the doc's DocFlavor
, as
shown in the table below.
Representation Class |
Document Size |
byte[] |
Length of the byte array |
java.io.InputStream |
Number of bytes read from the stream |
char[] |
Length of the character array x 2 |
java.lang.String |
Length of the string x 2 |
java.io.Reader |
Number of characters read from the stream x 2 |
java.net.URL |
Number of bytes read from the file at the given URL address |
java.awt.image.renderable.RenderableImage |
Implementation dependent* |
java.awt.print.Printable |
Implementation dependent* |
java.awt.print.Pageable |
Implementation dependent* |
* In these cases the Print Service itself generates the print data sent
to the printer. If the Print Service supports the JobKOctets attribute, for
these cases the Print Service itself must calculate the size of the print
data, replacing any JobKOctets value the client specified.
IPP Compatibility: The integer value gives the IPP integer value. The
category name returned by getName()
gives the IPP attribute
name.