Ad. 2) I'm not sure if I understand your question well. You can simply use and
access most of portlet objects from JSP.
You can also pass your objects to jsp within a session or using
RenderRequest.setAttribute (set object in portlet and get in jsp/servlet).
Ad. 3) You can do such thing if you extend JBossPortlet (instead of
GenericPortlet). You pass method name which should be invoked in action phase
as request parameter - default param name is "op" but it can be changed by
overwriting .getDefaultOperation() method
Generally some more advenced stuff can be used when you extend JBossPortlet
instead of GenericPortlet.
Look at ForumsPortlet class in forums module in portal sources.
You can easily pass things into jsp using custom taglib.
For example you do:
1) in portlet you fill DelegateContext object with your data - which have
nested structure
2) you dispatch with passing DelegateContext to JSP like:
req.setAttribute(PortalJsp.CTX_REQUEST, delegateContextObject);
PortletRequestDispatcher rd = getPortletContext()
.getRequestDispatcher("yourJSPFile.jsp");
3) In your JSP you can use a set of tags to get data from DelegateContext
object like:
<n:if/>
<n:include/>
<n:iterate/>
all of those are implemented in org.jboss.portal.core.servlet.jsp.taglib.*
package
If you want to investigate it more just analize ForumsPortlet doView() method.
RolePortlet and UserPortlet uses this stuff as well
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