Special purpose techniques for data exchange

IBM WebSphere Portal supports special purpose techniques for data exchange.

Cookies

The Java Portlet Specification 2.0 adds support for portlets to read and set HTTP cookies. We can share cookies between portlets and other Web applications to track information about the current browser interaction without requiring a server side session and without consuming server resources.

Custom JavaScript data exchange

As portlets are Web components inside an HTML page, use any client side techniques to read, write or exchange data within the markup the portlet provides. This includes sharing data via the page document object model (DOM) or use of client side JavaScript code or libraries.

Parent Portlet communication

Related information

http://www-128.ibm.com/developerworks/websphere/library/techarticles/0612_behl/0612_behl.html
http://www-128.ibm.com/developerworks/websphere/library/techarticles/0603_behl/0603_behl.html