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Posted to dev@isis.apache.org by "ASF subversion and git services (JIRA)" <ji...@apache.org> on 2016/10/26 17:29:59 UTC
[jira] [Commented] (ISIS-1515) BackgroundCommandExecution can NPE
if it attempts to invoke an action on an object that no longer exists.
[ https://issues.apache.org/jira/browse/ISIS-1515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15609098#comment-15609098 ]
ASF subversion and git services commented on ISIS-1515:
-------------------------------------------------------
Commit 8da21a3a841cd4e11146f6de4730f1b1673d1c13 in isis's branch refs/heads/maint-1.13.1 from [~danhaywood]
[ https://git-wip-us.apache.org/repos/asf?p=isis.git;h=8da21a3 ]
ISIS-1515: adds a guard in BackgroundCommandExecution for in case priorExecution is null (can happen if attempts to invoke an action on an object that no longer exists)
> BackgroundCommandExecution can NPE if it attempts to invoke an action on an object that no longer exists.
> ---------------------------------------------------------------------------------------------------------
>
> Key: ISIS-1515
> URL: https://issues.apache.org/jira/browse/ISIS-1515
> Project: Isis
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.13.0
> Reporter: Dan Haywood
> Assignee: Dan Haywood
> Priority: Minor
> Fix For: 1.13.1
>
>
> This is the stack trace that occurs in the main body:
> {code}
> org.apache.isis.core.runtime.persistence.ObjectNotFoundException: Object not found in store with oid estatioCommunications.Communication:24
> at org.apache.isis.core.runtime.system.persistence.PersistenceSession.loadPojo(PersistenceSession.java:974)
> at org.apache.isis.core.runtime.system.persistence.PersistenceSession.recreatePojo(PersistenceSession.java:1633)
> at org.apache.isis.core.runtime.system.persistence.PersistenceSession.adapterFor(PersistenceSession.java:1576)
> at org.apache.isis.core.runtime.system.persistence.PersistenceSession.adapterFor(PersistenceSession.java:1536)
> at org.apache.isis.core.runtime.sessiontemplate.AbstractIsisSessionTemplate.adapterFor(AbstractIsisSessionTemplate.java:108)
> at org.apache.isis.core.runtime.sessiontemplate.AbstractIsisSessionTemplate.adapterFor(AbstractIsisSessionTemplate.java:104)
> at org.apache.isis.core.runtime.sessiontemplate.AbstractIsisSessionTemplate.adapterFor(AbstractIsisSessionTemplate.java:99)
> at org.apache.isis.core.runtime.services.background.BackgroundCommandExecution.targetAdapterFor(BackgroundCommandExecution.java:331)
> at org.apache.isis.core.runtime.services.background.BackgroundCommandExecution$2.execute(BackgroundCommandExecution.java:177)
> at org.apache.isis.core.runtime.system.transaction.IsisTransactionManager.executeWithinTransaction(IsisTransactionManager.java:144)
> at org.apache.isis.core.runtime.services.background.BackgroundCommandExecution.execute(BackgroundCommandExecution.java:111)
> at org.apache.isis.core.runtime.services.background.BackgroundCommandExecution.doExecute(BackgroundCommandExecution.java:95)
> at org.apache.isis.core.runtime.sessiontemplate.AbstractIsisSessionTemplate.execute(AbstractIsisSessionTemplate.java:42)
> at org.isisaddons.module.quartz.dom.jobs.RunBackgroundCommandsJob.execute(RunBackgroundCommandsJob.java:46)
> at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
> at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573)
> Caused by: javax.jdo.JDOObjectNotFoundException: No such database row
> FailedObject:24[OID]org.incode.module.communications.dom.impl.comms.Communication
> NestedThrowables:
> org.datanucleus.exceptions.NucleusObjectNotFoundException: No such database row
> at org.datanucleus.api.jdo.NucleusJDOHelper.getJDOExceptionForNucleusException(NucleusJDOHelper.java:564)
> at org.datanucleus.api.jdo.JDOPersistenceManager.getObjectById(JDOPersistenceManager.java:1728)
> at org.datanucleus.api.jdo.JDOPersistenceManager.getObjectById(JDOPersistenceManager.java:1741)
> at org.apache.isis.core.runtime.system.persistence.PersistenceSession.loadPojo(PersistenceSession.java:963)
> ... 15 more
> Caused by: org.datanucleus.exceptions.NucleusObjectNotFoundException: No such database row
> at org.datanucleus.store.rdbms.request.FetchRequest.execute(FetchRequest.java:347)
> at org.datanucleus.store.rdbms.RDBMSPersistenceHandler.fetchObject(RDBMSPersistenceHandler.java:319)
> at org.datanucleus.state.AbstractStateManager.loadFieldsFromDatastore(AbstractStateManager.java:1147)
> at org.datanucleus.state.StateManagerImpl.validate(StateManagerImpl.java:4297)
> at org.datanucleus.ExecutionContextImpl.findObject(ExecutionContextImpl.java:3621)
> at org.datanucleus.api.jdo.JDOPersistenceManager.getObjectById(JDOPersistenceManager.java:1723)
> {code}
> Then, we get an NPE in the BackgroundCommandExecution after the execption is caught:
> {code}
> final Interaction.Execution priorExecution = backgroundInteraction.getPriorExecution();
> backgroundCommand.setCompletedAt(priorExecution.getCompletedAt());
> {code}
> because priorExecution is null. This results in:
> {code}
> java.lang.NullPointerException
> at org.apache.isis.core.runtime.services.background.BackgroundCommandExecution$2.execute(BackgroundCommandExecution.java:234)
> at org.apache.isis.core.runtime.system.transaction.IsisTransactionManager.executeWithinTransaction(IsisTransactionManager.java:144)
> at org.apache.isis.core.runtime.services.background.BackgroundCommandExecution.execute(BackgroundCommandExecution.java:111)
> at org.apache.isis.core.runtime.services.background.BackgroundCommandExecution.doExecute(BackgroundCommandExecution.java:95)
> at org.apache.isis.core.runtime.sessiontemplate.AbstractIsisSessionTemplate.execute(AbstractIsisSessionTemplate.java:42)
> at org.isisaddons.module.quartz.dom.jobs.RunBackgroundCommandsJob.execute(RunBackgroundCommandsJob.java:46)
> at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
> at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573)
> {code}
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