On 20/12/2007, at 11:39 AM, David Powell wrote:
Have you looked at "RFC 2254 - The String Representation of LDAP
Search
Filters"? I've used variants of that in URIs before.
Its use of &'s is probably asking for escaping bugs in URIs though.
Yes, and that's the reason I moved on pretty early ;)
Some questions and comments -
Attribute matching
Matching atom:category would be useful, but atom:category depends on
attributes - is that
supported at all? Can we have a special element comparison type for
atom:category that supports
attribute matching?
See @path on fq:index.
Existence checks
RFC 2254 supports checks that a property (or element) exists or not.
I'd think something like that would be pretty useful. Eg: draft=*
Yes; it's just a bare selector;
A constraint with no comparison operator will yield True if the
selector matches any node.
Matching against QNames
QNames are evil.
I've heard that... :)
I'd rather have inexact *:name matches, than explicitly
matching against a namespace prefix.
Would it be possible to write qname match predicates, but have the
prefix
in the
predicate have no significance, and then optionally allow another
type of
predicate,
for the anal, to requre that the prefix to be mapped to a certain
URI?
ex:name=="Dave" ; matches
*:name, but
ex:name=="Dave",xmlns:ex=="http://example.com/"; ; matches a
specific
element.
Hmm, possibly; perhaps something you declare on fq:interface?
Person constructs
Do element match predicates only apply to direct children of
atom:entry?
Does "email" match
atom:author/atom:email?
Respectively, yes and no.
Inheritance
Are element match predicates supposed to apply to the logical
properties
of the entry
after things like author inheritance rules have been applied?
Ah, good question. This needs to be clarified (and I think it should
inherit, but it may be tricky to cleanly specify).
fq:index
Is the default that no selectors can be used? If you define fq:index
elements
does that mean that only those selectors can be used? Is there
anyway to
say that
any selectors can be used?
The default is that the server hasn't explicitly told you about any
selectors if there aren't any fq:index's, so you're happy to try them
(the server can only say 'no').
Thanks!
--
Mark Nottingham http://www.mnot.net/
