Pat,
It appears that the inference engine had gotten into a state where it
was returning invalid XML. I'll try both to make the XML processor more
robust in the face of such an error, as well as see how I can get the
engine not to cause such an error in the first place. In any case, I've
restarted the system and queries are functioning properly now, including
the query you posed. If you see this bug in the future, and can report the
query that was run just prior to the problem appearing, that would be
helpful too. Many thanks. (01)
Adam (02)
1. (orbits PlanetEarth Sol) [KB] orbits PlanetEarth Sol
2. (orbits PlanetEarth Sol) 1 orbits PlanetEarth Sol
3. (instance PlanetEarth Planet) [KB] PlanetEarth is an instance
of Planet
4. (instance PlanetEarth Planet) 3 PlanetEarth is an instance
of Planet
5. (not
(and
(instance ?X1028 Planet)
(orbits ?X1028 Sol))) [Negated Query] ~{ ?X1028 is an instance
of Planet } or ~{ orbits ?X1028 Sol }
6. (not
(orbits ?X0 Sol))
(not
(instance ?X0 Planet)) 5 ?X0 is not an instance of Planet
7. PlanetEarth 2 4 6 PlanetEarth (03)
At 02:37 PM 2/17/2004 -0500, Patrick Cassidy wrote:
>Adam -
> Thanks for providing the on-line Sigma program. The display
>of term data is very useful.
> I have started trying the Sigma query function on the on-line server.
>Some queries work properly, some give null unexpectedly and
>some give error reports. An instance of the latter is appended
>below. Another query, a very simple
>one, just froze and never got an answer after hours.
>If you have no interest in seeing such results, let
>me know. Otherwise i will try some additional testing.
> What I don't know yet is whether the performance of
>the SIGMA on the web is likely to be different from
>what it would be installed locally. I have been rather
>occupied with other efforts and haven't had time
>to try a local installation.
>
> Pat
>
>============================
>Adam Pease wrote:
>
>>Folks,
>> I've upgraded Sigma on Peter's machines. It looks like we had some
>> problems with files being deleted inadvertently, so I've added a login
>> screen that results in strictly read-only functionality for Sigma.
>>Hopefully, this should result in a greater amount of up-time for the
>>software. Keep in mind though, Sigma is very much in "Alpha" stage, and
>>I don't warranty that it's stable yet.
>> You can log in at <http://sigma2.cim3.net:8080/sigma/login.html> with
>>u: user
>>p: user
>>Adam
>--
>=============================================
>Patrick Cassidy
>
>MICRA, Inc. || (908) 561-3416
>735 Belvidere Ave. || (908) 668-5252 (if no answer)
>Plainfield, NJ 07062-2054 || (908) 668-5904 (fax)
>
>internet: cassidy@xxxxxxxxx
>=============================================
>
>
>Query:
>-------------------------------
>(and
> (instance ?X Planet)
> (orbits ?X Sol))
>----------------------------------
>Error report:
>----
>
>type Exception report
>
>message Internal Server Error
>
>description The server encountered an internal error (Internal Server
>Error) that prevented it from fulfilling this request.
>
>exception
>
>java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
> at java.util.ArrayList.RangeCheck(ArrayList.java:508)
> at java.util.ArrayList.get(ArrayList.java:320)
> at
> com.articulate.sigma.ProofProcessor.numAnswers(ProofProcessor.java:172)
> at
> com.articulate.sigma.HTMLformatter.formatProofResult(HTMLformatter.java:139)
> at org.apache.jsp.AskTell$jsp._jspService(AskTell$jsp.java:275)
> at
> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
>
>org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:201)
> at
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:381)
> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:473)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
>
>org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
> at
>
>org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
> at
>
>org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
> at
>
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at
> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
> at
>
>org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)
> at
>
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
> at
>
>org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
> at
>
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at
> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
> at
> org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
> at
>
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
> at
>
>org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
> at
>
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
> at
>
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
> at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
> at
>
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at
> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
> at
>
>org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
> at
>
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at
> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
> at
>
>org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1027)
> at
> org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125)
> at java.lang.Thread.run(Thread.java:536)
>
>
>_________________________________________________________________
>Message Archives: http://ontolog.cim3.net/forum/ontolog-forum/
>Subscribe/Unsubscribe/Config:
>http://ontolog.cim3.net/mailman/listinfo/ontolog-forum/
>Shared Files: http://ontolog.cim3.net/file/
>Community Wiki: http://ontolog.cim3.net/wiki/ To Post:
>mailto:ontolog-forum@xxxxxxxxxxxxxxxx (04)
_________________________________________________________________
Message Archives: http://ontolog.cim3.net/forum/ontolog-forum/
Subscribe/Unsubscribe/Config:
http://ontolog.cim3.net/mailman/listinfo/ontolog-forum/
Shared Files: http://ontolog.cim3.net/file/
Community Wiki: http://ontolog.cim3.net/wiki/
To Post: mailto:ontolog-forum@xxxxxxxxxxxxxxxx (05)
|