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SUMMARY
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The point of this chapter has been to show how features common to modern portals are implemented. Looking back over chapters 1 through 7, you can now understand that the first six chapters were designed to provide a basic understanding of the main building blocks of portals and how they interact with one another. s 7 and 8
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showed you how to apply the theories from the first part of the book to real world solutions. It is the hands-on experience gained in these last two chapters that will be invaluable when you are asked to create portals of your own. Clients who ask you to build a web portal will expect to see not only the common portal building blocks such as having web parts and zones but the look-and-feel of prominent portals on the Internet. Because of these client expectations, learning these advanced techniques and understanding how to implement common portal behaviors will add some much needed value to your toolbox of development tricks.
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USEFUL PORTAL CUSTOMIZATIONS
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Portal management
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9.1 9.2 9.3 9.4 9.5 Introduction 257 Preparing for deployment 258 Recovering from errors gracefully 268 When all else fails 271 Summary 281
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INTRODUCTION
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It seems like ages since we started our journey into the world of web parts and portals and we ve covered a lot of ground along the way. Having taken on the challenge of creating a web portal for the Adventure Works business, we set about liaising with the end-users of the portal so that we could understand their requirements and ensure that we were building suitable features for them. Well, the good news is that our work is almost complete and soon it will be time to deploy the code onto the company s web server so the HR employees can begin using their new portal application. Before we can deploy our portal though, we need to start the planning that will help us to decide how the portal will be deployed. In addition, we need to work out how to support the portal after it has been deployed. By the end of this chapter, we will not only have deployed our portal, but we will also have set a strategy for effective management of the portal when it is no longer under our control. Having this strategy in place frees us to be creative in chapter 10, when we look at the newer areas of portal development that are emerging. When we build software applications, we always go through the well-known Software Development Lifecycle (SDLC) process. The SDLC defines the steps and processes that we must pass through to create quality software applications. This is 257
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essentially a linear progression from planning stages though to development, finishing with the testing and deployment stages. Because of the linear nature of the SDLC, it is also commonly referred to as the lifecycle of application development. While the majority of the tasks we ve embarked upon so far have been associated with the development stage of the lifecycle, we must now turn our attention to the last two phases of the SDLC lifecycle testing and deployment. So what exactly will happen when our application leaves the development environment, and what can we do to ensure that we are able to manage and provide support for the portal when it leaves our hands This chapter answers those questions.
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PREPARING FOR DEPLOYMENT
Picture this situation: we ve finished developing our portal application, so we deploy the application files onto the company s servers and release it to the users in the HR department. For the first week everything goes according to plan and, aside from a few requests for enhanced functionality, there have been no major hiccups and the application is running smoothly. However, in the second week, we start getting phone calls from the users complaining that, at times, our application seems to run slowly and sometimes stops working altogether. This is the worrisome scenario we face every time we deploy our applications into a production environment. How will we diagnose our application to track down an obscure and hard to locate bug You might think we could simply run the code in our development environment and observe the bug there by using debugging techniques, but remember that this particular bug took a week to begin showing its beady eyes. In reality there s no guarantee that the bugs that affect our applications in one environment will be reproducible in another environment, because many factors often differ between environments. For example, we typically develop our applications on a machine running a desktop operating system such as Windows XP; but when deployed, these same applications run on a machine running a server operating system such as Windows 2003 Server. In reality, there are hundreds of factors that vary between our development environment and the environments that we deploy our code in. Of course when our portal is in the development phase of the SDLC lifecycle, it is easy to diagnose the cause of errors occurring in the application, because the code is running on our development machine. In addition, we can use the debugging tools in Visual Studio 2005 to connect to the running application and step through the execution of a page to locate errors and attain the information necessary to help us track down the cause of problems. We saw how to attach the Visual Studio debugger to a web page and view the state of variables in chapter 2. Recall that we used the debugger when we attached it to a web page to look at the state of a GenericWebPart at runtime. However, as mentioned, things are not so simple when our applications are beyond reach.
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