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https://issues.apache.org/jira/browse/TAPESTRY-2308?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Howard M. Lewis Ship closed TAPESTRY-2308.
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Resolution: Fixed
Fix Version/s: 5.0.12
> Don't create HttpSession when persisted property is null
> --------------------------------------------------------
>
> Key: TAPESTRY-2308
> URL: https://issues.apache.org/jira/browse/TAPESTRY-2308
> Project: Tapestry
> Issue Type: Improvement
> Components: tapestry-core
> Affects Versions: 5.0.11
> Reporter: Josh Canfield
> Assignee: Howard M. Lewis Ship
> Priority: Minor
> Fix For: 5.0.12
>
>
> When persisting properties using "session" it would be nice if the session
> was only created after a non-null value was assigned to the property.
> It should be enough to add a simple guard in
> AbstractSessionPersistentFieldStrategy#postChange
> Session session = _request.getSession(newValue != null);
> if (session != null) {
> session.setAttribute(builder.toString(), newValue);
> }
> allowing existing session values to be replaced if the session exists, but
> not storing a value if no session exists.
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