[jboss-jira] [JBoss JIRA] (WFLY-13051) provide setRemoveOnCancelPolicy on ManagedScheduledExecutorService

[Eduardo Martins (Jira)]

    [ https://issues.redhat.com/browse/WFLY-13051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14130423#comment-14130423 ] 

Eduardo Martins commented on WFLY-13051:
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[~nimo22] sorry, it's not possible, and after internal team discussion we agreed allowing apps to reach internal executors would lock us on implementation details and could introduce other issues (e.g. security). If you really need to remove tasks when canceled (instead of when these expire) the work around possible would be for your app or custom extension to manage a ScheduledThreadPoolExecutor and use the ContextService to make tasks contextual (if needed). Not sure such workaround would have a significant performance advantage tho...  

> provide setRemoveOnCancelPolicy on ManagedScheduledExecutorService
> ------------------------------------------------------------------
>
>                 Key: WFLY-13051
>                 URL: https://issues.redhat.com/browse/WFLY-13051
>             Project: WildFly
>          Issue Type: Enhancement
>          Components: Concurrency Utilities
>    Affects Versions: 19.0.0.Beta1
>            Reporter: nimo stephan
>            Assignee: Eduardo Martins
>            Priority: Major
>
> Using 
> {code:java}
> @Resource
> private ManagedScheduledExecutorService executor;
> {code}
> provides no possiblity to setRemoveOnCancelPolicy to true.
> A casting within a method:
> {code:java}
> ((ScheduledThreadPoolExecutor) executor).setRemoveOnCancelPolicy(true);
> {code}
> throws the error:
> {code:java}
> Caused by: javax.ejb.EJBException: java.lang.ClassCastException: class org.glassfish.enterprise.concurrent.ManagedScheduledExecutorServiceAdapter cannot be cast to class java.util.concurrent.ScheduledThreadPoolExecutor (org.glassfish.enterprise.concurrent.ManagedScheduledExecutorServiceAdapter is in unnamed module of loader 'org.glassfish.javax.enterprise.concurrent' @a93b7af; java.util.concurrent.ScheduledThreadPoolExecutor is in module java.base of loader 'bootstrap')
> 	at org.jboss.as.ejb3 at 17.0.1.Final//org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:246)
> 	at org.jboss.as.ejb3 at 17.0.1.Final//org.jboss.as.ejb3.tx.CMTTxInterceptor.requiresNew(CMTTxInterceptor.java:388)
> 	at org.jboss.as.ejb3 at 17.0.1.Final//org.jboss.as.ejb3.tx.LifecycleCMTTxInterceptor.processInvocation(LifecycleCMTTxInterceptor.java:68)
> {code}
> Please provide option to cast or if not possible to add the property 
> {code:java}
> setRemoveOnCancelPolicy()
> {code}
>  within the object ManagedScheduledExecutorService. Because without it, we cannot remove a task from the queue with "future.cancel(false)".



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