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From "Bob Schellink (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (CLK-713) Race condition in Menu.getHeadElements
Date Sun, 18 Jul 2010 13:00:52 GMT

     [ https://issues.apache.org/jira/browse/CLK-713?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Bob Schellink resolved CLK-713.
-------------------------------

         Assignee: Bob Schellink
    Fix Version/s: 2.3.0-M1
       Resolution: Fixed

Thanks Finn, your solution of invoking getHeadElements from getRootMenu looks good. I've committed
to trunk.

> Race condition in Menu.getHeadElements
> --------------------------------------
>
>                 Key: CLK-713
>                 URL: https://issues.apache.org/jira/browse/CLK-713
>             Project: Click
>          Issue Type: Bug
>          Components: extras
>            Reporter: Finn Bock
>            Assignee: Bob Schellink
>            Priority: Critical
>             Fix For: 2.3.0-M1
>
>
> Multi threads can access a cached Menu while it is being initialized. The Exception can
be:
> java.lang.ArrayIndexOutOfBoundsException: 2
>         at java.util.ArrayList.add(ArrayList.java:352)
>         at org.apache.click.extras.control.Menu.getHeadElements(Menu.java:1077)
>         at org.apache.click.util.PageImports.processControl(PageImports.java:37
> Initializing the menu in MenuFactory by calling menu.getHeadElements() seems to make
the race condition go away.

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