Forwarded for David Meredith as he's having problems with a new email address. steve.. -------- Original Message -------- Subject: new email address Date: Thu, 20 Nov 2008 12:03:45 +0000 From: david meredith <david.meredith@stfc.ac.uk> To: jsdl-wg-owner@ogf.org Hi all, I have been chatting with Steve Pickles who posted the comments related to the problems with LoopInteger and LoopDouble on the OGF public comments site: http://www.ogf.org/gf/docs/comment.php?id=282 I think that the following modifications may? hopefully address the issues (modified schema attached, examples below). Basically: a) The loopCount attribute now defines the number of loop iterations as an integer and the cardinality of the loop can easily be retrospected by subtracting the number of LoopCountExceptions from loopCount. b) The LoopCountException, rather than defining the actual double /value/ of the exception (i.e. the value to skip), now selects the loop iteration values to skip (always integers). c) In doing this, the previous issues relating to the precision of double values when identifying exceptions and determining the loop cardinality is no longer a problem. Are we due another telephone conference soon to discuss this and the public comments ? cheers, dave <!-- example 1--> <!-- loop has cardinality of 8 (loopCount minus number of LoopCountExceptions)--> <!-- loop generates: 2, 3, 4, 5, 7, 9, 10, 11 --> <!-- note missing 6 and 8 (loop count exceptions 5 and 7) --> <sweep:Sweep> <sweep:Assignment> <sweep:DocumentNode> <sweep:NamespaceBinding ns="http://schemas.ggf.org/jsdl/2005/11/jsdl-posix" prefix="jsdl-posix" /> <sweep:Match>/*//jsdl-posix:POSIXApplication[1]/jsdl-posix:Argument[1]</sweep:Match> </sweep:DocumentNode> <sweepfunc:LoopInteger loopCount="10" start="2" step="1"> <sweepfunc:LoopCountException>5</sweepfunc:LoopCountException> <sweepfunc:LoopCountException>7</sweepfunc:LoopCountException> </sweepfunc:LoopInteger> </sweep:Assignment> </sweep:Sweep> <!-- example 2 --> <!-- loop has cardinality of 7 (loopCount minus number of LoopCountExceptions)--> <!-- loop generates: 2.0, 4.0, 10.0, 12.0, 14.0, 16.0, 18.0 --> <!-- note missing 6.0, 8.0, 20.0 (loop count exceptions 3, 4, 10)--> <sweep:Sweep> <sweep:Assignment> <sweep:DocumentNode> <sweep:NamespaceBinding ns="http://schemas.ggf.org/jsdl/2005/11/jsdl-posix" prefix="jsdl-posix" /> <sweep:Match>/*//jsdl-posix:POSIXApplication[1]/jsdl-posix:Argument[1]</sweep:Match> </sweep:DocumentNode> <sweepfunc:LoopDouble loopCount="10" start="2.0" step="2.0"> <sweepfunc:LoopCountException>3</sweepfunc:LoopCountException> <sweepfunc:LoopCountException>4</sweepfunc:LoopCountException> <sweepfunc:LoopCountException>10</sweepfunc:LoopCountException> </sweepfunc:LoopDouble> </sweep:Assignment> </sweep:Sweep> -- David Meredith e-Science / National Grid Service Science and Technology Facilities Council Daresbury Laboratory Warrington Cheshire WA4 4AD Tel: +44 1925 603762 email: david.meredith@stfc.ac.uk -- ------------------------------------------------------------------------ Dr A. Stephen McGough http://www.doc.ic.ac.uk/~asm ------------------------------------------------------------------------ Technical Coordinator, London e-Science Centre, Imperial College London, Department of Computing, 180 Queen's Gate, London SW7 2BZ, UK tel: +44 (0)207-594-8409 fax: +44 (0)207-581-8024 ------------------------------------------------------------------------