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https://issues.apache.org/jira/browse/TAPESTRY-2141?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Howard M. Lewis Ship closed TAPESTRY-2141.
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Resolution: Fixed
Fix Version/s: 5.0.11
This looks pretty fixed; I think the specific case was when a per-thread
service was using a TheadLocal to create the per-thread instance AND asking the
ThreadCleanupHub to register a listener, as that would also create a per-thread
instance inside a ThreadLocal to store the list. Now there's only one
ThreadLocal in that scenario.
> NullPointerExceptions under JDK 1.5 due to underlying ThreadLocal bug
> ---------------------------------------------------------------------
>
> Key: TAPESTRY-2141
> URL: https://issues.apache.org/jira/browse/TAPESTRY-2141
> Project: Tapestry
> Issue Type: Bug
> Components: tapestry-ioc
> Affects Versions: 5.0.10
> Environment: jre 1.5
> Reporter: Davor Hrg
> Assignee: Howard M. Lewis Ship
> Fix For: 5.0.11
>
>
> There is a ThreadLocal bug that might be a source of problems for following
> code:
> here is a non trivial example that is broken,
> I'll try to make a trivial one that fails :)
> a simple page with test link
> <t:eventlink event="test">test</t:eventlink>
> page:
> @Inject private HibernateSessionManager _sessionManager;
> @Inject private ThreadCleanupHub _cleanupHub;
> public void onTest(){
> new Thread(new Runnable(){
> public void run() {
> User user = (User)
> _sessionManager.getSession().load(User.class, Long.valueOf(1L));
> user.setName(user.getName()+"1");
> _cleanupHub.cleanup();
> }
> }).start();
> }
> for java 1.5 this code fails to save data (threadCleanupHub looses listener
> list )
> and it works fo 1.6
> here's a link to articles about this bug
> http://crazybob.org/2006/07/hard-core-java-threadlocal.html
> and the bug
> http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5025230
> it also makes this snippet not working
> http://wiki.apache.org/tapestry/Tapestry5HowToRunTaskInThread
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