Buenas noticias: The bug is fixed. A new snapshot is waiting for you [1].

Cheers,
Christian

[1] http://files.basex.org/releases/latest/



On Mon, May 11, 2020 at 9:47 PM Sebastian Guerrero <chapeti@gmail.com> wrote:
>
> Hi Christian!, thanks for your reply :-)
>
> I've just downloaded the latest snapshot [1] and executed the query [2], and yes: the problem is still there.
>
> Cheers,
> Sebastian.
>
> [1] https://imgur.com/ahgMg7p
> [2] https://imgur.com/tDCAtCu
>
> On Mon, May 11, 2020 at 3:58 PM Christian Grün <christian.gruen@gmail.com> wrote:
>>>
>>> Maybe it's a newbie issue, but I would like your comments.
>>
>>
>> …definitely something you shouldn't encounter as a newbie either ;) Thanks for reporting it.
>>
>> Does the exception also occur with the latest snapshot [1]?
>>
>> Cheers
>> Christian
>>
>> [1] http://files.basex.org/releases/latest/
>>
>>
>>
>>
>>>
>>> I'm writing a RESTXQ method to search among a couple of databases. ( >100 databases )
>>>
>>> Some databases are split into a couple of parts due to the number of nodes. For example US: it's separated into US00, US01 and US02.
>>>
>>> So, my problem is:
>>>
>>> if I replace "for $usPart in ('US00')" by "for $usPart in ('US00','US01',''US02)" in QUERY [A], I get this error:
>>>
>>> Improper use? Potential bug? Your feedback is welcome:
>>> Contact: basex-talk@mailman.uni-konstanz.de
>>> Version: BaseX 9.3.2
>>> Java: Oracle Corporation, 1.8.0_251
>>> OS: Windows 10, amd64
>>> Stack Trace:
>>> java.lang.NullPointerException
>>> at org.basex.query.expr.path.Path.index(Path.java:673)
>>> at org.basex.query.expr.path.Path.optimize(Path.java:157)
>>> at org.basex.query.expr.gflwor.For.toPredicate(For.java:220)
>>> at org.basex.query.expr.gflwor.GFLWOR.optimizeWhere(GFLWOR.java:532)
>>> at org.basex.query.expr.gflwor.GFLWOR.optimize(GFLWOR.java:109)
>>> at org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:100)
>>> at org.basex.query.expr.Extension.compile(Extension.java:45)
>>> at org.basex.query.expr.SwitchGroup.compile(SwitchGroup.java:40)
>>> at org.basex.query.expr.Switch.compile(Switch.java:60)
>>> at org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:96)
>>> at org.basex.query.expr.gflwor.ForLet.compile(ForLet.java:43)
>>> at org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:90)
>>> at org.basex.query.scope.MainModule.comp(MainModule.java:81)
>>> at org.basex.query.QueryCompiler.compile(QueryCompiler.java:114)
>>> at org.basex.query.QueryCompiler.compile(QueryCompiler.java:105)
>>> at org.basex.query.QueryContext.compile(QueryContext.java:312)
>>> at org.basex.query.QueryProcessor.compile(QueryProcessor.java:79)
>>>
>>>
>>> Using "for $usPart in ('US00')" it works without any problem. With one element there is no problem, with two or more it fails.
>>>
>>> Any ideas about what I'm doing wrong?
>>>
>>> Here is the
>>> QUERY [A]
>>> -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>> declare namespace gb="http://www.ipo.gov.uk/schemas/tm";
>>>
>>> let $text:="christian"
>>> let $registries:=('GB','US')
>>>
>>> let $results :=
>>>   for $registry in $registries
>>>    return
>>>    switch ($registry)
>>>
>>>            case "US"
>>>            return
>>>            (# db:enforceindex #) {
>>>                   for $usPart in ('US00')
>>>                   for $tmUS in db:open($usPart)/trademark-applications-daily/application-information/file-segments/action-keys/case-file
>>>                   where $tmUS/case-file-header/mark-identification/text() contains text {$text} using stemming
>>>                   return <trademark><ipo>US</ipo><text>{$tmUS/case-file-header/mark-identification/text()}</text></trademark>
>>>                 }
>>>
>>>            case "GB"
>>>            return
>>>                (# db:enforceindex #) {
>>>                    for $tmGB in db:open('GB')/gb:MarkLicenceeExportList/gb:TradeMark
>>>                   where $tmGB/gb:WordMarkSpecification/gb:MarkVerbalElementText/text() contains text {$text}
>>>                     return <trademark><ipo>GB</ipo><text>{$tmGB/gb:WordMarkSpecification/gb:MarkVerbalElementText/text()}</text></trademark>
>>>                 }
>>>
>>>             default return ""
>>>
>>>     return
>>>     <result>
>>>         <total>{count($results)}</total>
>>>         <trademarks>
>>>         {
>>>             for $result in $results
>>>             return $result
>>>         }
>>>         </trademarks>
>>>     </result>
>>>   -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>>
>>> Regards,
>>> Sebastian