Tom seems to have worked in other standardization projects than I have.
In messaging and directory standards the meaning of an upper bound limit is
that all implementations have be able to handle it if they get a text
string of that length (without truncating it). Only if the upper limit is
exceeded, it might be truncated by the receiving side, or alternatively a
protocol error might be returned.
Hence in my view the upper bound values ARE the length that the Printer
object SHALL be able to store.
My 2 cents.
At 05:18 PM 10/20/97 PDT, Tom Hastings wrote:
>Our current Model text gives upper bounds on the lengths of the 'text' and
>'name' attributes as 4095 and 255 octets, respectively. However, we don't
>say how many of those octets a Printer object SHALL store. We also don't
>say what happens if a client supplies a value that is longer than
>the maximum size that a Printer supports.
>>These are two issues that will affect interoperability.
>>I suggest that we add two sentences something like:
>>A Printer object SHALL support at least nnn octets in requests and responses.
>If a client supplies a value that exceeds nnn, the Printer object SHALL
>truncate the value on the right after the nnn-th octet.
>>I propose that 'nnn' be 255 for text and 127 for names. UTF-8 takes about
>1.7 octets per character on average for Western European names.
>>Comments? Lets discuss at Wednesdays telecon.
>>Here is the current text:
>>The 'text' attribute syntax is a sequence of one or more characters with a
>limit of 1 to 4095 octets. The Printer object SHALL support UTF-8  and
>MAY support additional charsets provided that they are registered with IANA
>>The 'name' attribute syntax is the same as 'text', including the MANDATORY
>support of UTF-8 and the exception natural language mechanism, except that
>the sequence of characters is limited so that its encoded form is of length
>1 to 255 octets. This syntax type is used for user-friendly strings, such
>as a Printer name, that, for humans, are more meaningful than identifiers.
Principal Engineer - Advanced Printing Standards - Xerox Corporation
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