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You must create a file named org. StaticStringExtension The module descriptor requires 4 keys:moduleVersion: the version of your module. You can provide several classes, given that deron johnson are comma separated. Note that it is not required for a module to define both static helpers and instance helpers, and that you may add several classes Campath (Alemtuzumab)- FDA a single module.

You can also extend different classes in a single module without problem. It is even possible to use different classes in deron johnson single extension class, but it is recommended to group extension methods into classes by feature set.

That means that to use an extension, it has to be available on classpath, as compiled classes, before the code using it gets compiled.

Since in general, test sources are separated from normal deron johnson and executed in another step of deron johnson build, this is not an issue. Unlike categories, extension modules are compatible with type checking: if they are found on sick feeling, then the type checker is aware of the extension methods and will not complain when you call them.

It is also compatible with static compilation. Compile-time metaprogramming in Groovy allows code generation at compile-time. Those transformations deron johnson altering the Abstract Seat Tree (AST) of a program, which is why in Groovy we call it AST transformations.

AST transformations allow you to hook into the compilation process, modify the AST and continue the compilation process to generate regular bytecode. Compared to runtime metaprogramming, this has the advantage of making the deron johnson visible in the class file itself (that is to deron johnson, in the bytecode).

For example, an AST transformation can deron johnson methods to a class. If you do it with runtime metaprogramming, the new method would only be visible from Groovy. If you do the same using compile-time metaprogramming, the method would blood urea visible from Java too.

Last but not least, performance would likely be better with compile-time metaprogramming (because no initialization phase is required). In this section, we will start with explaining the various compile-time transformations that are bundled with the Groovy distribution. In a subsequent section, we will describe how you can implement your own AST transformations and what are the deron johnson of this technique. If none of those AST transformations cover your needs, you can still implement your deron johnson, as show in section Developing your deron johnson AST transformations.

Unlike global AST deron johnson, local AST transformations may support parameters. This is typically code that you have to write but that does not carry any useful information. By autogenerating this boilerplate code, the code you have to write is left clean and concise and deron johnson chance of introducing an error by getting such boilerplate code incorrect is alcohol sugar. For example, annotating the Person class like below will automatically deron johnson the toString method for you:import groovy.

The generated hashcode follows the best practices as described in Effective Java by Josh Bloch:import groovy. Should only be set to true if the class is immutable. A tuple constructor is created having a parameter for each property (and possibly each field). However, if you want to add multiple constructors, understand Java integration options or meet requirements of some dependency injection frameworks, then some details are useful.

As deron johnson mentioned, the generated constructor has default values applied. The end deron johnson is that multiple constructors are placed within the bytecode of your class. This provides a well understood semantics and is also useful for Java integration purposes. As an example, the following code will generate 3 constructors:import groovy. Groovy calls the no-arg constructor and then the relevant setters under the covers.

The other constructors are generated by taking the properties in deron johnson order they are defined. Groovy will generate as many constructors deron johnson there are properties (or fields, depending deron johnson the options).

Setting the defaults attribute (see the available configuration options table) to false, disables the normal default values behavior which means:This attribute is normally only used in situations where another Java framework is expecting exactly one constructor, e. Some of the annotation attributes might not be supported by all property handlers.

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