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From "Poornachandran (JIRA)" <j...@apache.org>
Subject [jira] Updated: (BEEHIVE-1217) PageFlow stack gets corrupted when a request to nested pageflow ends prematurely
Date Tue, 01 Apr 2008 14:30:25 GMT

     [ https://issues.apache.org/jira/browse/BEEHIVE-1217?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Poornachandran updated BEEHIVE-1217:
------------------------------------

    Attachment: testcase.zip

test case that shows pageflow stack corruption

> PageFlow stack gets corrupted when a request to nested pageflow ends prematurely
> --------------------------------------------------------------------------------
>
>                 Key: BEEHIVE-1217
>                 URL: https://issues.apache.org/jira/browse/BEEHIVE-1217
>             Project: Beehive
>          Issue Type: Bug
>            Reporter: Poornachandran
>         Attachments: testcase.zip
>
>
> Scenario:
> 1. Please compile the attached pageflows (unzip these files into the pageflow enabled
webapp and compile).
> 2. Run Controller.java pageflow and invoke "Go to Nested" action. "Go to Nested" on NestedPageFlowController
simulates delay (using loop) and it takes sometime to complete the action.
> 3. In the meantime, invoke "Done" action, this action belongs to the outer pageflow and
displays a jsp page.
> Now, the PageFlowStack has the outer pageflow instance pushed, but the flow has actually
come out of the nested pageflow. By repeating this process, page flow stack gets lot of invalid
pageflow instances and after sometime, NullPointerException is thrown.
> By adding a validation code in FlowControllerFactory before creating the pageflow instance
and before pushing the pageflow instance to the pageflow stack, I am able to overcome this
issue. Please update, if this is correct approach. 

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