- From: Philip Fennell <Philip.Fennell@marklogic.com>
- Date: Fri, 27 Nov 2009 02:15:33 -0800
- To: "xproc-dev@w3.org" <xproc-dev@w3.org>
- CC: Michael Kay <mike@saxonica.com>
Henry, I'm not familiar with the function p:value-available(). I assume from the example that it's in the 'http://www.w3.org/ns/xproc' namespace. Regards Philip Fennell Consultant Mark Logic Corporation www.marklogic.com E-mail: philip.fennell@marklogic.com Mobile: +44 (0)7824 830 866 -----Original Message----- From: xproc-dev-request@w3.org [mailto:xproc-dev-request@w3.org] On Behalf Of Henry S. Thompson Sent: 26 November 2009 17:32 To: xproc-dev@w3.org Cc: Michael Kay Subject: p:value-available not as useful as I'd like. . . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 The following doesn't work: <p:with-option name="foo" select="if (p:value-available('bar') then $bar else xyzzy"/> because the semantics of if only protect you against _dynamic_ errors in the branch not taken, and the fact that bar isn't a know (XPath2) variable is a _static_ error. . . Wrapping two copies of the whole surrounding step in a p:choose/p:when seems awfully heavyweight. . . Any ideas for a workaround (I'm _not_ suggesting a change to the spec. at this late stage :-)? ht - -- Henry S. Thompson, School of Informatics, University of Edinburgh Half-time member of W3C Team 10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- (44) 131 650-4440 Fax: (44) 131 651-1426, e-mail: ht@inf.ed.ac.uk URL: http://www.ltg.ed.ac.uk/~ht/ [mail really from me _always_ has this .sig -- mail without it is forged spam] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (GNU/Linux) iD8DBQFLDrufkjnJixAXWBoRAiWoAJ0fgSYsxn2XcefUW8c2kImDBrvHNwCePvLn BTX8h6CX0ihAYO0gLOcnvvY= =Z45V -----END PGP SIGNATURE-----
Received on Friday, 27 November 2009 10:16:05 UTC