im trying to solve portlet communication problem

long time i spent reading posts there, but didn't found applicatable desigion

task: i need to redirect from one portlet to enother (its better to perform it programmaticaly.. from portlet class).. for user this should be seen just as usual page changing (but there portlets will be changed).. (portlets are placed on different pages (portal pages))
so i cant used portlet session technic

ok. i found liferay:renderURL tag.. but i cant find how to use it to store portlet link

so i go to source code.. implemintation of this tag is pretty simple but it relies on portal-ejb.jar classes (like RenderResponceImpl) wich a can used directly to render portlet url

the only way to get this jar to application classpath is to copy webapps/ROOT/WEB-INF/lib to commons/lib .. but it is much like a hack

so the question is .. is there a way (from portal-kernel or portal-service) to get url to enother portlet programmaticaly

HI,
I'm trying the similar...
I added an attribute to actionURL tag(use a class extends actionURL class), made it possible to redirect to another layout page.
I guess your portlet case is quite similar.
I used portal-ejb.jar and util-taglib.jar, meet a lot of problems.
do you have any good idea yet?
Maybe we can discuss.

There is no why up till now. I also have such a problem and in my oppinion AJAX is the best solution for this moment but I dont know if Liferay will service AJAX portlet on JSR 168 framework? Has anyone created AJAX portlet based on JSR 168 working on Liferay portal?

regards