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https://issues.apache.org/jira/browse/WW-2635?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lukasz Lenart updated WW-2635:
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Fix Version/s: 6.8.0
(was: 6.7.1)
> Flash scope
> -----------
>
> Key: WW-2635
> URL: https://issues.apache.org/jira/browse/WW-2635
> Project: Struts 2
> Issue Type: New Feature
> Components: "New" API
> Reporter: Guillaume Bilodeau
> Priority: Major
> Fix For: 6.8.0
>
> Attachments: FlashInterceptor.java, FlashInterceptorTest.java,
> FlashResult.java, FlashResultTest.java
>
>
> I have developed a FlashResult / FlashInterceptor pair to implement "flash"
> scope in a way that follows the usual Struts2 principles and respects its
> "feel".
> It basically works like the ServletActionRedirectResult except that instead
> of converting all extra parameters to strings and adding them as HTTP
> parameters in the redirect URL, it creates a HashMap using these parameter
> key/value pairs with no conversion and stores it in the user session. On the
> next HTTP request the FlashInterceptor, if properly added to the interceptor
> stack, will retrieve this map and copy the map entries to the target action
> using the parameter keys. It should work for all data types.
> To function correctly this approach assumes that bug WW-2170 is fixed. The
> implementation also borrows a lot from the ServletActionRedirectResult and
> some refactoring should
> be done.
> While there may be issues with flash scope in general with regards to
> repeated GETs being inconsistent, there are some valid use cases such as when
> saving messages to be displayed after a redirect. I think it's good for the
> developer to have this tool and it could make a nice addition to the Struts2
> code base.
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