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From "Alexander Klimetschek (JIRA)" <j...@apache.org>
Subject [jira] Created: (COCOON-1964) Redirects inside a block called via the blocks protocol fail
Date Tue, 05 Dec 2006 17:50:20 GMT
Redirects inside a block called via the blocks protocol fail
------------------------------------------------------------

                 Key: COCOON-1964
                 URL: http://issues.apache.org/jira/browse/COCOON-1964
             Project: Cocoon
          Issue Type: Bug
          Components: - Blocks Framework
    Affects Versions: 2.2-dev (Current SVN)
            Reporter: Alexander Klimetschek


If you do a redirect (from within a piece of flowscript "cocoon.redirectTo('cocoon:/foobar')"
or via redirect-to in the sitemap) inside a block that was called via the block: protocol
will fail since the re-use of the outputstream of the response (which happens to be a BlockCallHttpServletResponse)
does not work.

This is due to the use of getWriter() after getOutputStream() has already been called. The
servlet api says that only one of them should be called, so there is a check in the implementation
of getWriter() that will throw an IllegalStateException. The patch removes that check, which
is kinda hack, but I don't know of any other cases within cocoon where such a re-use is made.

The problem could be avoided if during the redirect a reset() or resetBuffer() would be called
on the response, but for some reason this does not happen with a redirect from within a flowscript
for a form.

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