[jboss-jira] [JBoss JIRA] (WFLY-972) EJB calendar timer Sunday calculation problem in certain locales

[Cheng Fang (JIRA)]

     [ https://issues.jboss.org/browse/WFLY-972?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Cheng Fang reassigned WFLY-972:
-------------------------------

    Assignee: Tomek Adamski  (was: Cheng Fang)


Tomek, can you look into this issue?
                
> EJB calendar timer Sunday calculation problem in certain locales
> ----------------------------------------------------------------
>
>                 Key: WFLY-972
>                 URL: https://issues.jboss.org/browse/WFLY-972
>             Project: WildFly
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: EJB
>         Environment: JDK 6 & 7
>            Reporter: Cheng Fang
>            Assignee: Tomek Adamski
>
> My ejb class contains this timeout method:
> {code:java}
>     @Schedule(dayOfWeek="Sun", persistent=false)
>     private void sunday(Timer t) {
>     }
> {code}
> When calling this timer.getNextTimeout(), it returned the Sunday after next Sunday (expecting next Sunday) when running on certain locales (it_IT, es_PE, etc).  It works as expected on other locales like en_US.  
> I added -Duser.language=it -Duser.country=IT to JAVA_OPTS when starting standalone server to use that locale.
> Seems to be a JDK bug.  There could be some differences how dates are calculated in different locales, but shouldn't be that big like skip one Sunday.  Today is Wed.
> One workaround is "to use locale.English when instantiating GregorianCalendar in the following classes."  I tried it on 7.2 with it_IT, and got the expected Sunday.
> {noformat}
> ejb3/src/main/java/org/jboss/as/ejb3/timerservice/schedule/CalendarBasedTimeout.java
> ejb3/src/main/java/org/jboss/as/ejb3/timerservice/schedule/util/CalendarUtil.java
> ejb3/src/main/java/org/jboss/as/ejb3/timerservice/task/CalendarTimerTask.java
> {noformat}

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