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Posted to ojb-user@db.apache.org by Justin Stanczak <js...@vinu.edu> on 2004/11/09 04:58:53 UTC
java.lang.NullPointerException on db.deletePersistent ();
I seem to be getting a NullPointerException when attempting to delete an object. I do this "this.db.deletePersistent (toBeDeleted);" and I get the exception. I've copied the same delete code to three different objects and two of the three throw the exception. I've looked over and over the code, but can't seem to figure it out. If someone has run into this I'm sure it's a simple mistake. Any help would be great.
java.lang.NullPointerException
at com.carque.sale.SalePersonHandler.deleteSalesPerson(SalePersonHandler.java:134)
at com.carque.sale.SalePersonHandler.handleRequest(SalePersonHandler.java:67)
at com.carque.CarQue.handleRequest(CarQue.java:74)
at org.apache.velocity.servlet.VelocityServlet.doRequest(VelocityServlet.java:358)
at org.apache.velocity.servlet.VelocityServlet.doPost(VelocityServlet.java:327)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:284)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:305)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:233)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:257)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:245)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:199)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:184)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:164)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:156)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:972)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:206)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:833)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:732)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:619)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:688)
at java.lang.Thread.run(Thread.java:534)
--
Justin Stanczak, Web Manager
Vincennes University
812-888-5813
"All that is necessary for the triumph of evil is that good men do nothing." Edmund Burke
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Re: java.lang.NullPointerException on db.deletePersistent (); - FIXED
Posted by Justin Stanczak <js...@vinu.edu>.
Never mind all. It was a stupid mistake on my part. I can't believe I
missed it.
Justin Stanczak, Web Manager
Vincennes University
812-888-5813
"All that is necessary for the triumph of evil is that good men do nothing." Edmund Burke
Justin Stanczak wrote:
> Well I just setup another with same code and it works. Does anyone
> have suggestions on what kind of mistakes would cause a
> java.lang.NullPointerException when using the this.db.deletePersistent
> (toBeDeleted);. I've removed just this line and there's no error, so I
> know it's a mistake in this area. Either with the object or mappings.
> This object below has no collections or references in it.
>
> Justin Stanczak, Web Manager
> Vincennes University
> 812-888-5813
>
>
> "All that is necessary for the triumph of evil is that good men do
> nothing." Edmund Burke
>
>
>
> Justin Stanczak wrote:
>
>> I seem to be getting a NullPointerException when attempting to delete
>> an object. I do this "this.db.deletePersistent (toBeDeleted);" and I
>> get the exception. I've copied the same delete code to three
>> different objects and two of the three throw the exception. I've
>> looked over and over the code, but can't seem to figure it out. If
>> someone has run into this I'm sure it's a simple mistake. Any help
>> would be great.
>>
>>
>> java.lang.NullPointerException
>> at
>> com.carque.sale.SalePersonHandler.deleteSalesPerson(SalePersonHandler.java:134)
>>
>> at
>> com.carque.sale.SalePersonHandler.handleRequest(SalePersonHandler.java:67)
>>
>> at com.carque.CarQue.handleRequest(CarQue.java:74)
>> at
>> org.apache.velocity.servlet.VelocityServlet.doRequest(VelocityServlet.java:358)
>>
>> at
>> org.apache.velocity.servlet.VelocityServlet.doPost(VelocityServlet.java:327)
>>
>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
>> at
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:284)
>>
>> at
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204)
>>
>> at
>> org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:305)
>>
>> at
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:233)
>>
>> at
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204)
>>
>> at
>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:257)
>>
>> at
>> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
>>
>> at
>> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
>>
>> at
>> org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:245)
>>
>> at
>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:199)
>>
>> at
>> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
>>
>> at
>> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
>>
>> at
>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:184)
>>
>> at
>> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
>>
>> at
>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:164)
>>
>> at
>> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
>>
>> at
>> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
>>
>> at
>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:156)
>>
>> at
>> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
>>
>> at
>> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
>>
>> at
>> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:972)
>> at
>> org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:206)
>> at
>> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:833)
>>
>> at
>> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:732)
>>
>> at
>> org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:619)
>>
>> at
>> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:688)
>>
>> at java.lang.Thread.run(Thread.java:534)
>>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
> For additional commands, e-mail: ojb-user-help@db.apache.org
>
>
---------------------------------------------------------------------
To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
For additional commands, e-mail: ojb-user-help@db.apache.org
Re: java.lang.NullPointerException on db.deletePersistent ();
Posted by Justin Stanczak <js...@vinu.edu>.
Well I just setup another with same code and it works. Does anyone have
suggestions on what kind of mistakes would cause a
java.lang.NullPointerException when using the this.db.deletePersistent
(toBeDeleted);. I've removed just this line and there's no error, so I
know it's a mistake in this area. Either with the object or mappings.
This object below has no collections or references in it.
Justin Stanczak, Web Manager
Vincennes University
812-888-5813
"All that is necessary for the triumph of evil is that good men do nothing." Edmund Burke
Justin Stanczak wrote:
> I seem to be getting a NullPointerException when attempting to delete
> an object. I do this "this.db.deletePersistent (toBeDeleted);" and I
> get the exception. I've copied the same delete code to three different
> objects and two of the three throw the exception. I've looked over and
> over the code, but can't seem to figure it out. If someone has run
> into this I'm sure it's a simple mistake. Any help would be great.
>
>
> java.lang.NullPointerException
> at
> com.carque.sale.SalePersonHandler.deleteSalesPerson(SalePersonHandler.java:134)
>
> at
> com.carque.sale.SalePersonHandler.handleRequest(SalePersonHandler.java:67)
>
> at com.carque.CarQue.handleRequest(CarQue.java:74)
> at
> org.apache.velocity.servlet.VelocityServlet.doRequest(VelocityServlet.java:358)
>
> at
> org.apache.velocity.servlet.VelocityServlet.doPost(VelocityServlet.java:327)
>
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:284)
>
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204)
>
> at
> org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:305)
>
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:233)
>
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204)
>
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:257)
>
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
>
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
>
> at
> org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:245)
>
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:199)
>
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
>
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
>
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:184)
>
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
>
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:164)
>
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
>
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
>
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:156)
>
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
>
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
>
> at
> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:972)
> at
> org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:206)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:833)
>
> at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:732)
>
> at
> org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:619)
>
> at
> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:688)
>
> at java.lang.Thread.run(Thread.java:534)
>
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