Hi Jean-Marc, the bug you encountered is due to a newly feature (called “function inlining”) we’ve introduced just recently. It will be fixed soon [2]. Until then, you can simply disable it by setting INLINELIMIT to 0 [1] This can e.g. be done by choosing »Command« in the dropdown box of the GUI main window, and executing the command »SET INLINELIMIT 0«.
Thanks for the reproducible code, Christian [1] http://docs.basex.org/wiki/Options#INLINELIMIT [2] https://github.com/BaseXdb/basex/issues/796 ___________________________ On Fri, Nov 22, 2013 at 10:28 AM, jean-marc Mercier <jeanmarc.merc...@gmail.com> wrote: > Hi, > > Within my environment, I am experiencing some frustrating behavior of the > Xquery Basex engine. I've done my best to single out the problem in the > following XQUERY code : > > declare function local:wtf($x as item() ) {function() { $x}}; > declare function local:dummy($f,$x) { > if(fn:empty($f())) then local:wtf($x) else local:wtf(())}; > > declare variable $insert := local:dummy(function(){ () }, function() { (), > ()} ); > fn:count($insert()) > > The issues are : > > 1) executing this code yields an "Improper use? Potential bug?" exception > (see details further on). > 2) If I change the execution query to be > fn:count(local:dummy(function(){ () }, function() { (), ()} )()) ( I just > copy and pasted the value of $insert into the fn:count(..) ) then the query > is executed normally, returning "1". > 3) If I change the function declaration local:wtf as follow > declare function local:wtf($x) {function() { $x}}; (I just removed "as > item()"), then the query is executed normally, returning "1". > > Can you reproduce it with another environment ? > > Cheers, > > Jean-Marc > > > Improper use? Potential bug? Your feedback is welcome: > Contact: basex-talk@mailman.uni-konstanz.de > Version: BaseX 7.8 beta 6aeaebf > Java: Oracle Corporation, 1.7.0_05 > OS: Windows 7, amd64 > Stack Trace: > java.lang.NullPointerException > at org.basex.query.value.item.FuncItem.inlineExpr(FuncItem.java:308) > at org.basex.query.func.DynFuncCall.optimize(DynFuncCall.java:58) > at org.basex.query.func.DynFuncCall.compile(DynFuncCall.java:39) > at org.basex.query.expr.Arr.compile(Arr.java:40) > at org.basex.query.func.StandardFunc.compile(StandardFunc.java:60) > at org.basex.query.MainModule.compile(MainModule.java:63) > at org.basex.query.QueryCompiler.compile(QueryCompiler.java:70) > at org.basex.query.QueryCompiler.compile(QueryCompiler.java:61) > at org.basex.query.QueryContext.analyze(QueryContext.java:270) > at org.basex.query.QueryContext.compile(QueryContext.java:253) > at org.basex.query.QueryProcessor.compile(QueryProcessor.java:71) > at org.basex.core.cmd.AQuery.query(AQuery.java:81) > at org.basex.core.cmd.XQuery.run(XQuery.java:22) > at org.basex.core.Command.run(Command.java:323) > at org.basex.core.Command.execute(Command.java:92) > at org.basex.server.LocalSession.execute(LocalSession.java:121) > at org.basex.server.Session.execute(Session.java:37) > at org.basex.core.Main.execute(Main.java:146) > at org.basex.BaseX.<init>(BaseX.java:119) > at org.basex.BaseX.main(BaseX.java:38) > > > > _______________________________________________ > BaseX-Talk mailing list > BaseX-Talk@mailman.uni-konstanz.de > https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk > _______________________________________________ BaseX-Talk mailing list BaseX-Talk@mailman.uni-konstanz.de https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk
