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Figure 4.4 A directed graph that bends and closes in a task loop. It's almost a homemade CI server diagram.

Public Event Click(ByVal sender As System.Object, _ ByVal e As System.EventArgs)

You must also provide an email address and a security question and answer for each user. We will not be using that information in this example, so it does not matter what you enter. Close the WAT. Now you have three users to work with for this example.

The collage program depends on three objects. The collageViewController, as usual, does most of the work. It writes out to a collageView object, which exists mainly as a CALayer to be written upon. Finally, you ll have a tempImageView object that allows the user to position an image after it s been selected but before it s permanently placed. For this example, the code will be written to deploy the collage application to the iPhone. To learn how to port it to the iPad, be sure to read appendix D; it contains step-by-step instructions for porting this app as well as your own apps to the iPad.

deployment strategy of EJB 354 deprecated methods 91 design patterns and antipatterns 359 360, 366, 370 defined 360 in industry 367 refactoring 364 designing bean interfaces 53 developing for EJB 378 directory structure 328 disabling re-entrancy 238 distributed 17 applications 24 component architecture 33 domain 59 domain model 64 exceptions 62 synchronization 88 transactions 25, 27, 32, 84 distribution 256 avoid 65 and interfaces 63 and logical tiers 65 and transparency 54 domain objects and DTO 73 domain-driven design 57 58 domain-oriented design and entity beans 59 Dover Elevators 367 DriverManager 90 DTO 100, 104, 219, 253 254, 256, 281 and duplication 74 with JDBC 281 with many clients 73 multiple variations 73 with persistence frameworks 281 and reuse 74 sample 72 duplication EJB code 332 durable subscriptions 181 cost of 181 message expiration and 181

2.5.3 Configuring iBATIS (a preview)

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One: Select the edit item in the dropdown list. Two: Open the verbs menu for the web part. Three: Select the edit verb. Four: Save changes.

NHaml http://code.google.com/p/nhaml/

Notice that our encodings are identical in this case, just as promised. For basic Latin characters, UTF-8 and ASCII are compatible. (Unlike Notepad, the .NET UTF8Encod ing does not choose to add a BOM by default, so unless you use characters outside the

This solution creates a batch process that executes only once. You could, however, change the creation of the timer to execute repeatedly (instead of only once). See recipe 4.6 for the specifics of the EJB timer service. By timing the batch process to run at off-peak hours, you are safe from tying up resources that are needed by actual users. When you re developing a mechanism like this one, your business logic would be located in the ejbTimeout() method. This is the method that is executed when the timer expires. If you use a repeating timer, this method is also

joining visit http://eclipse.org/aspectj and http://aosd.net. If you are having a problem, chances are someone has already faced the problem and perhaps solved it. I will be available on Author Online at http://www.manning.com/ laddad to help you with your questions. View AOP/AspectJ as augmenting technology Use the underlying conventional classes as much as possible. Throughout the book, we based our solutions on available technologies: logging toolkits for logging, rule engines for business rule implementation, JAAS for authentication and authorization, and so on. These technologies have been used by thousands of developers worldwide for several years, and such heavy usage results in mature solutions. When you use them, you can then use AspectJ to fill in the missing pieces of these technologies. Experiment I learned most techniques through experimentation. Start with the examples in this book. Try them outside of real projects. You will get valuable insight into the AOP philosophy and its logistical issues. You will gradually become more comfortable with the new technology; then you can solve the more complex problems. Develop a repertoire of reusable aspects When it comes to productivity, nothing beats reusing modules that have already been developed. Many crosscutting concerns apply not only to multiple modules, but also to multiple systems. As you gain more experience, start paying attention to reusable parts and create reusable libraries to benefit various projects. However, keep in mind that you should always start simple.

The advice will be invoked after ConcernRuntimeException is thrown by any method that declares that it may throw a business-specific exception. The advice declares that it also may throw the business exception. In the body of the advice, we check whether the cause for the runtime exception that has been caught is the business exception we are trying to preserve. If it is, we throw the cause exception after casting it to the BusinessException type. Now when we run the program, we get the following output, just as expected: