Get Design and implement Servlets, JSPs, and EJBs for IBM PDF

By Joaquin Picon; et al

ISBN-10: 0738418846

ISBN-13: 9780738418841

This IBM redbook offers layout instructions for constructing e-business functions in accordance with servlets, JavaServer Pages (JSP) and firm JavaBean (EJB) applied sciences. the ideas are in line with WebSphere program Server complex variation. The redbook describes the innovations of workload balancing by utilizing a community dispatcher and clones of the applying Server. The redbook proposes a layout of net functions according to layout styles, equivalent to the model-view-controller paradigm and the command framework. during this context, the use of company beans, together with entry beans, institutions, and collections is explored intimately, and a suite of EJB-based layout styles is defined. half 1, "Choosing acceptable internet technollogies" presents instructions on how you can layout particular elements of an software. It additionally explains why and whilst a clothier should still circulate enterprise common sense from JavaBeans to a extra strong expertise like company JavaBeans. half 2, "Design styles and guidance" is a suite of layout styles for construction e-business purposes. Readers can use the data at once from a bankruptcy and practice it of their personal designs

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If a machine becomes unavailable, its work can be routed to other machines containing server clones. We also use IBM SecureWay Network Dispatcher for "spraying" requests to identical multiple machines, each running an application server clone, or a servlet redirector (which one is chosen is not relevant for this part of the discussion). This does not interfere, but rather complements the workload management provided automatically by IBM WebSphere Advanced Edition cloning. • Vertical scaling consists in using this cloning support so as to get more from each machine on which the product runs.

Display commands are commands except that they Chapter 4. WebSphere command framework 25 are intended to run locally. A display command calls other commands to run the business logic and encapsulates all the dynamic content of the page by converting the output properties of the executed command into HTML. Server Servlet Command View (JSP) Display Command Client Business logic Figure 12. 3 Application developer roles The e-business applications are created by multidisciplinary teams. The skills required are contributed from graphic artists, Web page designers, client and server side script writers, and Java programmers.

2 Target different types of client devices The second solution mentioned above, to target the different types of client devices, is more complicated to implement. But in complex applications it will be necessary to proceed this way. Support of multiple types of client does not only mean to provide multiple stylesheets or JavaServer Pages. Even if HTTP is typically used in e-business applications, not all devices may communicate via HTTP, there may be the need to use a pure socket communication or the RMI protocol for example.

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Design and implement Servlets, JSPs, and EJBs for IBM WebSphere Application Server by Joaquin Picon; et al


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