Joerg/Emilian. This is a questioning we've raised some time ago. I still cannot upgrade from revision 91 because of the side effects of this change ...
It seems that we need some wrapping/unwrapping when working with 'Long's in Nashorn, I don't like this either, but it seems that there's a gap between Long, Double and JSNumber max values which was bringing a loss of precision with long values in Nashorn. Thus, Long is now "object" ... Check out: http://mail.openjdk.java.net/pipermail/nashorn-dev/2016-August/006450.html *João Paulo Varandas*+55 11 99889-2321 joaovaran...@inpaas.com 2016-10-12 12:11 GMT-03:00 Emilian Bold <emilian.b...@gmail.com>: > I just read a few of the bugs linked and it does seem worrisome. So, > Nashorn cannot reliably be used as a glue between Java code that uses > longs? > > > --emi > > On Wed, Oct 12, 2016 at 5:10 PM, Frantzius, Jörg < > joerg.frantz...@aperto.com > > wrote: > > > Hi, > > > > as of JDK 1.8.0_101, the following JUnit test fails: > > > > @Test > > public void testLongIsNumber() { > > jdk.nashorn.api.scripting.ScriptObjectMirror isNumberFunction = > > eval("function isNumber(arg) {\n" + > > " return typeof arg === 'number';\n" + > > "}\n" + > > ""); > > Object result = isNumberFunction.call(isNumberFunction, 1L); > > assertTrue((boolean) result); > > } > > > > This breaks e.g. Nodyn, where Long numbers resulting from > > java.io.File.length() are passed into https://nodejs.org/api/util. > > html#util_util_isnumber_object , resulting in some „if" clause now taking > > the wrong turn. I guess this is a side-effect of > > https://bugs.openjdk.java.net/browse/JDK-8144020 . > > > > While I’m probably able to patch this in Nodyn, I find it a bit > > frightening that any other code out there that relies on Longs being > typeof > > ‚number‘ will break now, in particular because there is a lot of JDK API > > that returns Long... > > > > Regards, > > Jörg > > > > > > --- > > > > Dipl. Inf. Jörg von Frantzius, Technical Director > > > > E-Mail joerg.frantz...@aperto.com > > > > Phone +49 30 283921-318 > > Fax +49 30 283921-29 > > > > Aperto AG – An IBM Company > > Chausseestraße 5, D-10115 Berlin > > http://www.aperto.com<http://www.aperto.de/> > > http://www.facebook.com/aperto > > https://www.xing.com/companies/apertoag > > > > HRB 77049 B, AG Berlin Charlottenburg > > Vorstand: Dirk Buddensiek (Vorsitzender), Kai Großmann, Stephan Haagen, > > Daniel Simon > > Aufsichtsrat: Matthew Candy (Vorsitzender) > > > > > -- "Esta mensagem, incluindo seus anexos, pode conter informacoes confidenciais e privilegiadas. Se voce a recebeu por engano, solicitamos que a apague e avise o remetente imediatamente. Opinioes ou informacoes aqui contidas nao refletem necessariamente a posicao oficial da Plusoft." "Antes de imprimir, pense em sua responsabilidade e compromisso com o MEIO AMBIENTE"
