Re: XML Schema String and white spaces

[Martin Sachs <msachs@cyclonecommerce.com>]

Thanks, Sacha.  That certainly clarifies the issue.  We probably should fix 
the negotiation BPSS instance document for now (in the next draft).

Monica, I think we have a new BPSS issue.  I can't think of any reason why 
the number of spaces in a row in a string in a BPSS instance document 
should be significant. Could you suggest discussing changing the white 
space constraint to "collapse"?

Regards,
Marty


At 08:17 AM 11/25/2003, Sacha Schlegel wrote:
>Hi Marty
>
>I looked up the XML Schema Part 2: Datatypes (W3C Recommendation 02 May
>2001) from http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/
>
>-------------
>
>Section 3.2.1 string
>
>The XML Schema "string" primitive type has constraning facets, such as
>length, minLength, maxLength, ... and whiteSpace.
>
>There is a XML built in datatpye derived from string called
>"normalizedString"
>
>Section 4.3.6 whiteSpace
>
>The whiteSpace constraint can have 3 values: preserve, replace, and
>collapse.
>
>preserve: no normalisation is done.
>replace: tabs, line feed and carriage returns are replaced with space
>!collapse: contiguous sequences of spaces are collapsed to a single
>space. and leading and trailing spaces are removed.
>
>It goes on that the string datatype has whiteSpace set as preserve. A
>derived by restriction of string data type can have the whiteSpace set
>to collapse.
>
>When I look at the BPSS v1.01 XML Schema I only see the usage of
>"xsd:string" data type without any constraints, such as whiteSpace.
>
>It seems to me that the double white space in one of the expression
>attributes of a Transition element of the ANCPA BPSS is a problem
>because it is of xsd:string which has whitespace set a preserved.
>
>So "abc def" is not equal to "abc  def" if the whiteSpace constraint is
>set to preserved.
>
>What do you think?
>
>
>Kind regards.
>
>Sacha
>
>--
>------------------------------------------------
>Sacha                                   Schlegel
>------------------------------------------------
>4 Warwick Str, 6102 St. James, Perth,  Australia
>sacha@schlegel.li                www.schlegel.li
>public key:            www.schlegel.li/sacha.gpg
>------------------------------------------------

*************************************
Martin Sachs
standards architect
Cyclone Commerce
msachs@cyclonecommerce.com