New PDF release: Programming Grails: Best Practices for Experienced Grails

By Burt Beckwith

ISBN-10: 1449323936

ISBN-13: 9781449323936

Dig deeper into Grails structure and detect how this software framework works its magic. Written by means of a center developer at the Grails workforce, this functional advisor takes you backstage to bare the interior workings of its 2.0 characteristic set. You'll examine top practices for development and deploying Grails functions, together with functionality, protection, scaling, tuning, debugging, and monitoring.

Understand how Grails integrates with Groovy, Spring, Hibernate, and different JVM applied sciences, and how you can create and use plugins to reinforce your application's performance. when you know the way Grails provides habit via conference, you could resolve difficulties extra simply and advance purposes extra intuitively.

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Extra resources for Programming Grails: Best Practices for Experienced Grails Developers

Example text

Groovy’s Contributions in the War Against Verbosity One of Groovy’s most popular features is its reduced verbosity compared to Java. It’s been said that Groovy is a “low ceremony” language. If you’re new to Groovy, you may not yet appreciate how much less code it takes to get things done compared to Java, especially if you use your IDE’s code-generation functions. But, once you get used to Groovy, you might find that you don’t even need to use an IDE anymore, except perhaps when you want to attach a debugger to work on a particularly gnarly bug.

Anyone can contribute, from simply reporting an issue or requesting a feature in the bug tracker, to contributing fixes and enhancements through pull requests and patches. org website is open source, and it is also hosted at GitHub. Installing Grails Getting started using Grails is as simple as using Groovy. There are a few different ways to do this. The most direct is to download the latest ZIP distribution, unpack the ZIP file to the location, set the GRAILS_HOME environment variable to point to your desired location, and add the $GRAILS_HOME/bin (or %GRAILS_HOME%\bin in Windows) directory to the PATH environment variable.

Constructors It’s rare to see constructors in Groovy classes. This is because the Groovy compiler adds a constructor that takes a Map and sets field values to map values where the key corre‐ sponds to a field name. This gives you named parameters for this constructor syntax, so it’s both more convenient and clearer which values are which. For example, a simple POGO like this: class Person { String firstName String initial String lastName Integer age } can be constructed by setting some or all of the field values: def author = new Person(firstName: 'Hunter', initial: 's', lastName: 'Thompson') def illustrator = new Person(firstName: 'Ralph', lastName: 'Steadman', age: 76) def someoneElse = new Person() In the examples, I’m taking advantage of Groovy letting me omit the [ and ] map characters, because it makes the invocations cleaner.

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Programming Grails: Best Practices for Experienced Grails Developers by Burt Beckwith

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