Feature Requests item #2877036, was opened at 2009-10-12 14:43 Message generated for change (Comment added) made by tsheyar You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=482471&aid=2877036&group_id=56967
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Pathfinder - runtime Group: None Status: Open Priority: 5 Private: No Submitted By: Roberto Cornacchia (cornuz) Assigned to: Nobody/Anonymous (nobody) Summary: PF: more useful error reports Initial Comment: Currently, runtime errors are reported as an error code + textual description. Often this is not enough, especially because the error refers to algebra expressions that could have been generated by the compiler, so they are hard to find in the query text. Example: ERROR = !ERROR: err:FORG0003, fn:zero-or-one called with a sequence containing more than one item. With enough experience, most of the times it is possible to find which expression in the original query generated this, although there is no explicit zero-or-one() call. However, when the query is non-trivial, this becomes a real pain. If it is too hard to trace back the exact line in the query text (which should be possible anyway), a printout of the algebra expression being evaluated, whith some context around, would certainly help to quickly spot the error. ---------------------------------------------------------------------- Comment By: Jan Rittinger (tsheyar) Date: 2009-10-13 00:03 Message: As far as I can oversee almost nobody would understand the algebra plan in a textual representation. In most cases it's not easy to digest. The best solution would be to give an estimate position with respect to the input query. Currently we loose the position information before the translation to our XQuery Core representation -- probably because due to rewrites positions might be misleading. Necessary changes to make 'assumptions on the position' would include making the Core representation location-aware, keeping positions over rewrites, and incorporating location information in the core2algebra translation... ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=482471&aid=2877036&group_id=56967 ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ Monetdb-bugs mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/monetdb-bugs
