1. (Exchange Programme to advance e-Infrastructure Know-How)
The EPIKH Project
(Exchange Programme to advance e-Infrastructure Know-How)
Portlet Develop
Riccardo Rotondo
Consortium GARR
Joint CHAIN/EUMEDGRID-Support/EPIKH School to Science Gateways
Amman, Jordan

2. Outline Portlet Introduction; Porlet Life Cycle;
Porlet Method Interface;
Action Request
Render Request

3. What is Porltet ?
Defined in the Java Specification Request (JSR 168/286)
A porlet is a web component able to set a frame portion of a web page.
Differently from Servlet it needs a Porltlet Container to allow the user to interact with it.
Standard Porltet can be deployed in any Porlet Container in case they will use standard libray.

4. Porlet Life Cycle
YES NO
End of Services?

5. Porltlet Interface Method
Class GenericPortlets {
init (PortletConfig);
processAction (ActionRequest, ActionResponse);
render (RenderRequest, RenderResponse);
destroy();
doView (Request, Response);
doEdit (Reuqest, Response);
doHelp (Request, Response); }

6. Portlet Mode
A porltet works in three different states.
View Mode: generate a markup ( a portion of a web page);
Edit Mode: allow portlet customisation and setting preferences.
Help Mode: explains portlet functionalities.

7. Action Request Action Request Render Request view.jsp edit.jsp
processAction()
doView()
Action
Request
Render
Request
edit.jsp
doEdit()
view.jsp
processAction()

8. Render Request
Render
Request
view.jsp
view2.jsp
doView()