23644 2013-10-26 14:47:03 +0000 [UPD 3.0] Relax update checks and allow last step of path to be updating 2014-07-30 13:55:52 +0000 1 1 1 Unclassified XPath / XQuery / XSLT Update 3.0 Working drafts PC Windows NT RESOLVED WONTFIX P2 normal --- 1 christian.gruen john.snelson jim.melton jonathan.robie public-qt-comments oldest_to_newest 95395 0 christian.gruen 2013-10-26 14:47:03 +0000 The current XQUF spec forbids path expressions to be updating. This in contrast to other iterating expressions, such as FLWOR, which allows the RETURN clause to be simple, vacuous, or updating. As path and FLWOR expressions have similar semantics, the path semantics could be extended and relaxed to the simple rule that (only) the last step of a path may be updating. The following queries would then be valid: * //item/(delete node text()) * (1, <x/>) ! (if(. instance of node()) then insert node text { 'X' } into . else ()) The queries can be currently be formulated as follows: * for $i in //item return delete node $i/text() * for $i in (1, <x/>) return if($i instance of node()) then insert node text { 'X' } into $i else ()) 95419 1 john.snelson 2013-10-28 10:15:06 +0000 That functionality might just be better off using the "!" operator. 109576 2 jonathan.robie 2014-07-30 13:55:52 +0000 The Working Group decided not to add this functionality.