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From Karl Wright <daddy...@gmail.com>
Subject Re: Fatal Error
Date Thu, 26 May 2011 15:06:50 GMT
In general, if you are extending BaseOutputConnector, you should
either not implement a method at all (and thus allow the base class
method to be used), or you should always make sure to call the
superclass method from your extending class.  That's a pretty standard
way to do things throughout Java.

Karl


On Thu, May 26, 2011 at 11:01 AM, Farzad Valad <hokie@farzad.net> wrote:
> Thanks for looking at the code and that fixed it.  The connect method has
> been empty since day one, very strange that now it started to give me
> problems.  I went as far back as 3 months of history.
>
> So do I need to call the super method for disconnect, install, deinstall?
> Any others?  I noticed adding it to disconnect I had to modify the method
> signature to throw the ManifoldCFException.
>
> On 5/26/2011 9:19 AM, Karl Wright wrote:
>>
>> Here's your problem:
>>
>>        public void connect(ConfigParams configParams) {
>>                if (Logging.connectors.isEnabledFor(Level.DEBUG)) {
>>                        Logging.connectors.debug("Connection instance
>> requested");
>>                }
>>        }
>>
>> You need to have a super.connect(configParams) in there somewhere.
>>
>> Karl
>>
>> On Thu, May 26, 2011 at 10:06 AM, Farzad Valad<hokie@farzad.net>  wrote:
>>>
>>> Well I have extended BaseOutputConnector and not overriding
>>> getConfiguration().   I don't know why this would be a problem now, but
>>> should I be overriding a method or supplying parms I'm not?
>>>
>>> On 5/26/2011 7:52 AM, Karl Wright wrote:
>>>>
>>>> Is it possible for your connector to return a null value from a
>>>> getConfiguration() method call?  This would be unlikely if it extended
>>>> BaseOutputConnector, but maybe it does not.
>>>>
>>>> Karl
>>>>
>>>> On Thu, May 26, 2011 at 8:43 AM,<hokie@farzad.net>    wrote:
>>>>>
>>>>> So I put log statements in all my methods, the last one called is
>>>>> setThreadContext.  Also I'm not sharing objects in threads, removed
the
>>>>> id
>>>>> code all together.  May something is corrupt in the db tables?  I'm
>>>>> just
>>>>> trying edit an existing job.  I could try zapping the db table and
>>>>> starting
>>>>> over.
>>>>>
>>>>>        public void setThreadContext(IThreadContext threadContext)
{
>>>>>                if (Logging.connectors.isEnabledFor(Level.DEBUG))
{
>>>>>                        Logging.connectors.debug("Connection
handle
>>>>> requested");
>>>>>                }
>>>>>                try {
>>>>>                        super.setThreadContext(threadContext);
>>>>>                } catch (ManifoldCFException e) {
>>>>>                        e.printStackTrace();
>>>>>                }
>>>>>        }
>>>>>
>>>>>
>>>>> On Wed, 25 May 2011 18:14:29 -0400, Karl Wright<daddywri@gmail.com>
>>>>>  wrote:
>>>>>>
>>>>>> My guess would be inadvertant cross-thread object sharing again.
>>>>>> Nothing significant has changed in ManifoldCF in this area in a long
>>>>>> while.
>>>>>>
>>>>>> Karl
>>>>>>
>>>>>> On Wed, May 25, 2011 at 6:10 PM,<hokie@farzad.net>    wrote:
>>>>>>>
>>>>>>> I'm getting some very strange errors internal errors.  I'd like
to
>>>>>>> say
>>>>>>> I
>>>>>>> haven't done something, but something must of changed since the
last
>>>>>>> time.
>>>>>>>  Any ideas where I should be looking?  Thanks!
>>>>>>>
>>>>>>> SEVERE: Servlet.service() for servlet [jsp] in context with path
>>>>>>> [/mcf-crawler-ui] threw exception [java.lang.NullPointerException]
>>>>>>> with
>>>>>>> root
>>>>>>> cause
>>>>>>> java.lang.NullPointerException
>>>>>>>        at
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> org.apache.manifoldcf.agents.interfaces.OutputConnectorFactory$PoolKey.hashCode(OutputConnectorFactory.java:491)
>>>>>>>        at java.util.HashMap.get(Unknown Source)
>>>>>>>        at
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> org.apache.manifoldcf.agents.interfaces.OutputConnectorFactory.release(OutputConnectorFactory.java:395)
>>>>>>>        at
>>>>>>> org.apache.jsp.editjob_jsp._jspService(editjob_jsp.java:606)
>>>>>>>        at
>>>>>>> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
>>>>>>>        at
>>>>>>> javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
>>>>>>>        at
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:419)
>>>>>>>        at
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391)
>>>>>>>        at
>>>>>>> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
>>>>>>>        at
>>>>>>> javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
>>>>>>>        at
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
>>>>>>>        at
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
>>>>>>>        at
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
>>>>>>>        at
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
>>>>>>>        at
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
>>>>>>>        at
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
>>>>>>>        at
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
>>>>>>>        at
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
>>>>>>>        at
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
>>>>>>>        at
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395)
>>>>>>>        at
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:250)
>>>>>>>        at
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
>>>>>>>        at
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
>>>>>>>        at
>>>>>>> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown
>>>>>>> Source)
>>>>>>>        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
>>>>>>> Source)
>>>>>>>        at java.lang.Thread.run(Unknown Source)
>>>>>>>
>>>>>>>
>>>
>
>

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