On May 24, 2004, at 8:01 PM, Bob Atkinson wrote:
IANA registration of XML tags is thus totally and completely redundant
and irrelvant.
I'm not disagreeing with your interpretation of XML Schema. Douglas is
suggesting a space-saving optimization whereby the longish (relatively
speaking) <?xml .... banner is replaced with a smaller token (at least
that's what I think he was saying). I also made a similar suggestion
with replacing the xmlns declarations with an IANA registry as a
space-saving optimization.
But as I said before, I think it is probably best to see the new schema
and write some examples before attempting space-saving optimizations.
I say this because I attempted to create what I thought would be a
reasonable XML instance of AOL's current SPF record today just to see
how big it would be:
<?xml version="1.0" charset="US-ASCII"><ldap
xmlns="urn:ietf:params:ns:marid1"><ip4>152.163.225.0/24</
ip4><ip4>205.188.139.0/24</ip4><ip4>205.188.144.0/24</
ip4><ip4>205.188.156.0/23</ip4><ip4>205.188.159.0/24</
ip4><ip4>64.12.136.0/23</ip4><ip4>64.12.138.0/24</ip4><ptr>mx.aol.com</
ptr><all eval="nuetral"/><binaries xmlns="urn:ietf:params:ns:mailbin1"
types="NONE"></ldap>
Even adding in a make-believe extension and using the longish BCP 81
URN's, it still only worked out to 373 characters.
-andy