Hi Geoff,

As you already indicated, version 8.6.7 is pretty old now, so it’s
difficult to guess what might have gone wrong. Feel free to share with
us if you can reproduce the behavior with the latest version.


On Fri, Jun 5, 2020 at 9:17 PM Geoff Alexander <gd...@us.ibm.com> wrote:
> We have a BaseX application that uses the BaseX REST API. A number of GET 
> requests are failing with an HTTP 400 Bad Request response. Looking at the 
> BaseX logs, I find that BaseX is internally throwing 
> java.lang.ArrayIndexOutOfBoundsException for these HTTP 400 Bad Request 
> failures:
> <entry time="05:13:57.193" address="***.***.***.***:*****" user="admin" 
> type="400" ms="3.93">[GET] 
> https://********.*******.ibm.com:10443/BaseX/rest/****/*******.xml; Improper 
> use? Potential bug? Your feedback is welcome: Contact: 
> basex-talk@mailman.uni-konstanz.de Version: BaseX 8.6.7 Java: IBM 
> Corporation, 1.8.0_241 OS: Linux, amd64 Stack Trace: 
> java.lang.ArrayIndexOutOfBoundsException at 
> org.basex.util.Compress.unpack(Compress.java:120) at 
> org.basex.data.DiskData.txt(DiskData.java:284) at 
> org.basex.data.DiskData.text(DiskData.java:251) at 
> org.basex.io.serial.Serializer.node(Serializer.java:370) at 
> org.basex.io.serial.Serializer.node(Serializer.java:158) at 
> org.basex.io.serial.StandardSerializer.node(StandardSerializer.java:105) at 
> org.basex.io.serial.Serializer.node(Serializer.java:345) at 
> org.basex.io.serial.Serializer.node(Serializer.java:158) at 
> org.basex.io.serial.StandardSerializer.node(StandardSerializer.java:105) at 
> org.basex.io.serial.AdaptiveSerializer.node(AdaptiveSerializer.java:75) at 
> org.basex.io.serial.Serializer.serialize(Serializer.java:109) at 
> org.basex.io.serial.AdaptiveSerializer.serialize(AdaptiveSerializer.java:66) 
> at org....</entry>
> I realize that BaseX 8.6.7 is somewhat old. I can look at upgrading to a more 
> recent version if necessary. But before I do that, I'd like to know if the 
> java.lang.ArrayIndexOutOfBoundsException is a known problem and more 
> importantly if there is anything we can do short of upgrading BaseX to fix 
> the problem.
> Thanks,
> Geoff Alexander, Ph.D.
> Software Engineer, Corporate Tools Development
> IBM Corporation
> Charlotte, NC

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