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From Jukka Zitting <ju...@zitting.name>
Subject Re: Thoughts about Jackrabbit 1.0 (and 1.1)
Date Fri, 11 Nov 2005 18:12:47 GMT
Hi,

Alexandru Popescu wrote:
> Isn't JCR-247 (chid axis support for XPATH predicates) a requirement of
> JSR170?

I don't think so, even if the XPath grammar in JSR 170 defines
predicates quite generally as "[" Expr "]". The wording of JSR 170
indicates that XPath predicates  need only be allowed for the last
location step and seems to indicate that only properties and the few
XPath functions are required. See the sections 6.6.3.3 and 6.6.4.7 of
the JSR 170 specification for details.

I also believe that implementing JCR-247 is by no means a trivial task.
(Marcel, what do you think?) Thus even if JCR-247 was required by JSR
170, I think it would make sense to release 1.0 (or 0.9) without full
XPath support to make the release happen. There aren't that many (if
any!) RDBMs that support the full SQL standard...

BR,

Jukka Zitting

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