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polish portlet docs for external redirects

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Scott Andrews
2008-10-13 21:33:37 +00:00
parent d9592a7957
commit f19dddd6f0
1 changed files with 3 additions and 1 deletions
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4
spring-webflow-reference/src/portlet.xml
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@@ -190,11 +190,13 @@ externalContext.requestMap.portletMode
<para>
The Portlet API only allows redirects to be requested from an action request.
Because views are rendered on the render request, views and <code>view-state</code>s cannot trigger a redirect.
</para>
<para>
The <code>externalRedirect:</code> view prefix is a convenience for Servlet based flows.
An <code>IllegalStateException</code> is thrown if a redirect is requested from a render request.
</para>
<para>
This limitation can be worked around for an <code>end-state</code> by implementing the <code>FlowHandler.handleExecutionOutcome</code> method.
<code>end-state</code> redirects can be achieved by implementing <code>FlowHandler.handleExecutionOutcome</code>.
This callback provides the <code>ActionResponse</code> object which supports redirects.
</para>
</sect2>