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https://issues.apache.org/jira/browse/TAPESTRY-1394?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12486162
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Patrick Moore commented on TAPESTRY-1394:
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Glad you asked...
Well @InitialValue really serves 2 purposes:
1) to set a parameter to an initial value when an instance of the
page/component is created.
2) to reset the parameter to a default value when the instance is put back into
the instance pool.
I need to use @InitialValue for case #2 so that the page doesn't hang on to
object graphs that it shouldn't.
> @InitialValue("null") sets property to empty collection not null
> ----------------------------------------------------------------
>
> Key: TAPESTRY-1394
> URL: https://issues.apache.org/jira/browse/TAPESTRY-1394
> Project: Tapestry
> Issue Type: Bug
> Reporter: Patrick Moore
> Fix For: 4.1.2
>
>
> This :
> @InitialValue("null")
> public abstract List<BroadcastProviderUrl> getCachedUrls();
> results in cachedUrls being set to an empty list instead of null.
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