Portlet 344603 225040557 2008-07-11T16:28:50Z Tgrall 6030482 /* Standards */ add eXo and JSR 286 {{technical}} '''Portlets''' are pluggable [[user interface component]]s that are managed and displayed in a [[web portal]]. Portlets produce fragments of markup code that are aggregated into a portal page. Typically, following the [[desktop metaphor]], a portal page is displayed as a collection of non-overlapping portlet windows, where each portlet window displays a portlet. Hence a portlet (or collection of portlets) resembles a web-based application that is hosted in a portal. Some examples of portlet applications are [[Email|email]], [[weather]] reports, [[discussion forum]]s, and [[news]]. Portlet standards are intended to enable [[software developer]]s to create portlets that can be plugged in to any portal supporting the standards. ==Standards== The purpose of the [[Web Services for Remote Portlets]] protocol is to provide a [[web service]]s standard that allows for the "[[plug-n-play]]" of remote running portlets from disparate sources. Many sites allow registered users to personalize their view of the website by turning on or off portions of the webpage, or by adding or deleting features. This is usually accomplished by a set of ''portlets'' that together form the portal. The Java Portlet Specification ([[JSR168]], JSR286) '''enables''' [[interoperability]] for portlets between different [[web portal]]s. This specification defines a set of [[Application programming interface|APIs]] for interaction between the portlet container and the portlet addressing the areas of [[personalization]], [[presentation]] and [[security]]. [[Apache Pluto]] is a [[reference implementation]] of JSR168. Other than the reference implementation, a number of vendors provide commercial implementations of the portlet container. Some of the leading vendors are [[IBM]], [[Oracle_Corporation|Oracle]], [[BEA Systems]], [[Vignette_(software)|Vignette Corporation]] and [[Sun_Microsystems|Sun Microsystems]]. These vendors provide standards based implementations as well as extensions not yet approved by the standards body. Furthermore a number of open-source portal solutions support JSR168 such as [[Apache Software Foundation|Apache's]] [[Jetspeed-2]] Enterprise Portal, [[eXo Platform]] or [[Liferay]] Portal. ==External links== {{Wiktionary}} * [http://www.jcp.org/en/jsr/detail?id=168 JSR-168, the Java Portlet API] * [http://www.jcp.org/en/jsr/detail?id=286 JSR-286, the Java Portlet API 2.0] * [http://portals.apache.org/pluto/ Apache Pluto Project] * [http://portalzone.blogspot.com/2007/12/portlet-20-jsr-286-tutorial.html Portlet Tutorial] * [http://www.onjava.com/pub/a/onjava/2005/09/14/what-is-a-portlet.html What is a portlet] {{web-stub}} [[Category:Web portals|*Portlet]] [[de:Portlet]] [[es:Portlet]] [[fa:پورتلت]] [[fr:Portlet]] [[it:Portlet]] [[pl:Portlet]] [[pt:Portlet]] [[ru:Портлет]] [[vi:Portlet]]