Portlet container like pluto or jetspeed on google app engine?

Question

I am trying to build something \"portlet server\"-ish on the google app engine. (as open source)

I\'d like to use the JSR168/286 standards, but I think that the re

Answer 1

I've looked at it briefly - your biggest problem is that the Portlet spec builds on but over-rides some key bits of the servlet spec - specifically it typically requires support for cross-context calls.

While it is possible to engineer a single web-app that contains multiple portlets and the servlet container (often done for admin portlets, or in Liferay's case much of their stack) it's not easy.

In reality, if looking at doing portal type stuff on AppEngine, I'd look much more closely at hosting OpenSocial widgets (if you really want standards), perhaps running in Shindig, or hosted externally. This can also get you JSR-168 compatibility, as there's a number of (not great) bridge portlets to host widgets, and it's not a hard adaptor to write.