Chapter 6. Portlets

In the previous chapter, we looked at how to build a page containing information on our example company's requirements, and the offers made by its suppliers. Now, we are interested in adding a chart to that page that graphically shows the status of requirements pending and closed, as a percentage. However, this graph will not only be required on this page but in many others. Therefore, it is necessary build this chart as a reusable component. In this kind of scenario, the technology of portlets can help us.

A portlet is a component of software that can be part of a page. In consequence, a page can be enriched by many portlets allowing us to grab the contents of various sources of data. This chapter will help us to understand ...

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