Get Building Portals with the Java Portlet API (Expert's Voice) PDF

By Jeff Linwood, Dave Minter

This booklet is a radical advent into JSR 168 that may support get portal builders up to the mark into this rather new specification. — Thomas Paul, JavaRanch Sheriff How do builders convey present purposes right into a portal? How do builders combine content material administration platforms and se's with a portal? and the way do builders start with the Portlet API? Jeff Linwood and Dave Minter help you resolve those actual difficulties in construction Portals with the Java Portlet API. This ebook describes the hot Java portlet API, together with safeguard, portlet lifestyles cycles, and portlet interplay with servlets and JSP. The examples will paintings on any portal that complies with the JSR-168 portlet API. a number of instance portlets are built to provide you hands-on portlet adventure. you will even how one can port present servlet and JSP functions right into a new portal surroundings. The authors additionally speak about unmarried Sign-On (SSO) utilizing Kerberos and the GSS-API, syndicating content material with RSS, and integrating a charting resolution with JFreeChart. different subject matters lined are the open-source Apache Jakarta Lucene seek engine, personalization, portlet configuration, portlet personal tastes, and net prone for distant Portals (WSRP). XDoclet can also be used all through parts of this e-book.

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The portlet container takes the render parameters from the action response and puts them on the portlet’s render request. Render parameters remain valid for a portlet, even if a request is passed to another portlet on the same page. When the user triggers an action request, the portlet is responsible for setting the render parameters used by future requests. If a portlet receives a render request, it will use the new render parameters for any subsequent render requests, until the portlet receives a new user-initiated request.

The element identifies the name of the web application on Tomcat that contains the portlet, in this case first. Each application contains one or more elements, which identify individual portlets. xml, describes how the portal page looks. The important part of this file is the fragment p1 that identifies the portlet. The value of the portlet property must be a valid application ID, a period, and a valid portlet ID from that application, all concatenated together. firstportlet"/> Running Running Pluto after you deploy the portlets is simple.

We also discuss the mechanics of publishing an RSS feed for an existing content store. Our search engine integrates with RSS, so a content feed constantly updates a list of the top hits for a given search. This is useful for creating ad hoc knowledge management systems within your organization. We will discuss RSS and content syndication in more detail in Chapter 9. Searching Content from the Portal In this book, we use the open source search engine Lucene from the Jakarta Apache project to create a portlet for searching content in a Lucene index.

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