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Posted to dev@cocoon.apache.org by Thorsten Scherler <th...@juntadeandalucia.es> on 2008/08/20 14:40:07 UTC
[2.1] AbstractEnvironment - NPE in release(...)
Hi all,
I found a bug that just some time happens and I am not sure why.
In AbstractEnvironment the method release throw SOMETIMES a NPE:
/**
* Releases a resolved resource
*/
public void release(final org.apache.excalibur.source.Source source)
{
if (null != source) {
this.sourceResolver.release(source);
}
}
I have found that under certain circumstances this.sourceResolver is
already null. I do not understand ATM why and when this can happen.
Does somebody has an idea?
salu2
--
Thorsten Scherler thorsten.at.apache.org
Open Source Java consulting, training and solutions
Re: [2.1] AbstractEnvironment - NPE in release(...)
Posted by Thorsten Scherler <th...@juntadeandalucia.es>.
On Wed, 2008-08-20 at 14:40 +0200, Thorsten Scherler wrote:
> Hi all,
>
> I found a bug that just some time happens and I am not sure why.
>
> In AbstractEnvironment the method release throw SOMETIMES a NPE:
> /**
> * Releases a resolved resource
> */
> public void release(final org.apache.excalibur.source.Source source)
> {
> if (null != source) {
> this.sourceResolver.release(source);
> }
> }
>
> I have found that under certain circumstances this.sourceResolver is
> already null. I do not understand ATM why and when this can happen.
>
> Does somebody has an idea?
Here the stack:
java.lang.NullPointerException
at
org.apache.cocoon.environment.AbstractEnvironment.release(AbstractEnvironment.java:563)
at
org.apache.cocoon.environment.wrapper.MutableEnvironmentFacade.release(MutableEnvironmentFacade.java:314)
at
org.apache.cocoon.transformation.TraxTransformer.recycle(TraxTransformer.java:549)
at
org.apache.avalon.excalibur.pool.InstrumentedResourceLimitingPool.put(InstrumentedResourceLimitingPool.java:407)
at
org.apache.avalon.excalibur.component.PoolableComponentHandler.doPut(PoolableComponentHandler.java:212)
at
org.apache.avalon.excalibur.component.ComponentHandler.put(ComponentHandler.java:425)
at
org.apache.avalon.excalibur.component.ExcaliburComponentSelector.release(ExcaliburComponentSelector.java:307)
at
org.apache.cocoon.components.ExtendedComponentSelector.release(ExtendedComponentSelector.java:301)
salu2
>
> salu2
--
Thorsten Scherler thorsten.at.apache.org
Open Source Java consulting, training and solutions
Re: [2.1] AbstractEnvironment - NPE in release(...)
Posted by Thorsten Scherler <th...@apache.org>.
On Thu, 2008-08-21 at 09:23 +0200, Thorsten Scherler wrote:
> On Wed, 2008-08-20 at 22:00 +0200, Andreas Hartmann wrote:
> > Hi Thorsten,
> >
> > Thorsten Scherler schrieb:
> > > I found a bug that just some time happens and I am not sure why.
> > >
> > > In AbstractEnvironment the method release throw SOMETIMES a NPE:
> > > /**
> > > * Releases a resolved resource
> > > */
> > > public void release(final org.apache.excalibur.source.Source source)
> > > {
> > > if (null != source) {
> > > this.sourceResolver.release(source);
> > > }
> > > }
> > >
> > > I have found that under certain circumstances this.sourceResolver is
> > > already null. I do not understand ATM why and when this can happen.
> >
> > this bug also occured in Lenya. The problem there was that a source was
> > not properly released by its source factory. Maybe this helps to locate
> > the issue …
>
> Yeah, thanks Andreas, I thought I saw it before. ;)
>
> Will investigate.
>
Fix that.
Thanks again Andreas.
salu2
> salu2
>
> >
> > http://svn.apache.org/viewvc/lenya/trunk/src/java/org/apache/lenya/cms/cocoon/source/SiteSourceFactory.java?r1=618208&r2=679424&diff_format=h
> >
> > (line 164)
> >
> > -- Andreas
> >
> >
--
Thorsten Scherler thorsten.at.apache.org
Open Source Java consulting, training and solutions
Re: [2.1] AbstractEnvironment - NPE in release(...)
Posted by Thorsten Scherler <th...@juntadeandalucia.es>.
On Wed, 2008-08-20 at 22:00 +0200, Andreas Hartmann wrote:
> Hi Thorsten,
>
> Thorsten Scherler schrieb:
> > I found a bug that just some time happens and I am not sure why.
> >
> > In AbstractEnvironment the method release throw SOMETIMES a NPE:
> > /**
> > * Releases a resolved resource
> > */
> > public void release(final org.apache.excalibur.source.Source source)
> > {
> > if (null != source) {
> > this.sourceResolver.release(source);
> > }
> > }
> >
> > I have found that under certain circumstances this.sourceResolver is
> > already null. I do not understand ATM why and when this can happen.
>
> this bug also occured in Lenya. The problem there was that a source was
> not properly released by its source factory. Maybe this helps to locate
> the issue …
Yeah, thanks Andreas, I thought I saw it before. ;)
Will investigate.
salu2
>
> http://svn.apache.org/viewvc/lenya/trunk/src/java/org/apache/lenya/cms/cocoon/source/SiteSourceFactory.java?r1=618208&r2=679424&diff_format=h
>
> (line 164)
>
> -- Andreas
>
>
--
Thorsten Scherler thorsten.at.apache.org
Open Source Java consulting, training and solutions
Re: [2.1] AbstractEnvironment - NPE in release(...)
Posted by Andreas Hartmann <an...@apache.org>.
Hi Thorsten,
Thorsten Scherler schrieb:
> I found a bug that just some time happens and I am not sure why.
>
> In AbstractEnvironment the method release throw SOMETIMES a NPE:
> /**
> * Releases a resolved resource
> */
> public void release(final org.apache.excalibur.source.Source source)
> {
> if (null != source) {
> this.sourceResolver.release(source);
> }
> }
>
> I have found that under certain circumstances this.sourceResolver is
> already null. I do not understand ATM why and when this can happen.
this bug also occured in Lenya. The problem there was that a source was
not properly released by its source factory. Maybe this helps to locate
the issue …
http://svn.apache.org/viewvc/lenya/trunk/src/java/org/apache/lenya/cms/cocoon/source/SiteSourceFactory.java?r1=618208&r2=679424&diff_format=h
(line 164)
-- Andreas
--
Andreas Hartmann, CTO
BeCompany GmbH
http://www.becompany.ch
Tel.: +41 (0) 43 818 57 01