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https://issues.apache.org/jira/browse/MYFACES-2665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12858921#action_12858921
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Jakob Korherr commented on MYFACES-2665:
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The problem here originates from the fact that the code that builds the whole
component tree was moved from ViewHandler.renderView() to
ViewDeclarationLanguage.buildView() in JSF 2.0. This is a problem for the
legacy ViewHandler, because it returns null for getViewDeclarationLanguage()
and thus VDL.buildView() is never called.
To solve this problem we have to memorize if VDL.buildView() was already called
for the current UIViewRoot in VDL.renderView(), and if not, we have to call it
from there.
> Legacy ViewHandler doesn't work in back compatibility mode for JSP pages
> ------------------------------------------------------------------------
>
> Key: MYFACES-2665
> URL: https://issues.apache.org/jira/browse/MYFACES-2665
> Project: MyFaces Core
> Issue Type: Bug
> Components: JSR-314
> Affects Versions: 2.0.0-beta-3
> Reporter: Nick Belaevski
> Assignee: Jakob Korherr
> Attachments: myfaces-2665.zip
>
>
> Attached demo project shows ViewHandler wrapper based on JSF 1.2 that
> prevents JSP pages rendering in back-compatibility mode. View structure is
> just not being built, because calls to VDL doesn't happen. Mojarra works
> (activate "jsfri" Maven profile to check).
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