August 2005
Intermediate to advanced
509 pages
21h 36m
English
book
IBM Rational Application Developer V6 Portlet Application Development and Portal Tools
by Juan R. Rodriguez, Cristiano Cesario, Karla Galvan, Belen Gonzalez, George Kroner, Gianfranco Rutigliano, Ryan Wilson
Content preview from IBM Rational Application Developer V6 Portlet Application Development and Portal Tools
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25.2. Portlet event handling
The portlet programming model involves an event phase and a render phase in each request-response cycle.
The event phase is when the property broker delivers notifications to cooperative portlets and when the cooperative portlets can notify the property broker of property value changes. During the event phase, an action may be delivered on one portlet. If the property broker is used, this may result in other actions being triggered on other portlets.
The event phase is followed by the render phase, in which each portlet is asked to return markup, which is then aggregated in a single page. The markup may embed actions which can be invoked by the user. The page is then returned to the client (such as a browser).
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