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- ---
- title: Overview
- order: 1
- layout: page
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-
- [[portal.overview]]
- = Overview
-
- Vaadin supports running UIs as portlets in a portal, as defined in the JSR-286
- (Java Portlet API 2.0) standard. A portlet UI is defined just as a regular UI,
- but deploying to a portal is somewhat different from deployment of regular web
- applications, requiring special portlet descriptors, etc. Creating the portlet
- project with the Vaadin Plugin for Eclipse or a Maven archetype automatically
- generates the necessary descriptors.
-
- In addition to providing user interface through the Vaadin UI, portlets can
- integrate with the portal to switch between portlet modes and process special
- portal requests, such as actions and events.
-
- While providing generic support for all portals implementing the standard,
- Vaadin especially supports the Liferay portal and the needed portal-specific
- configuration in this chapter is given for Liferay. Vaadin also has a special
- Liferay IPC add-on to enable communication between portlets.
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