Extensible Code Generation with Java, Part 1
Code generation is a key new trend in engineering, one that you need to understand well. The reason is simple: today's modern frameworks are extremely code-intensive. Using a code generator to build the code
Tutorial Details:
The Basics
Code generation is using one application to build code for another application. In this case, XSLT will be our generator application. Input for a code generator can come in many forms (source code, database schemas, XML models, etc.). Regardless of the source, we call the input the model because it represents (models) what is to be built. On the other side are the templates. The templates render the model into code, or other artifacts such as documentation.
There are two types of code generation: passive and active. In the passive model, you generate the code once and then tweak it. In the active model, you generate the code continuously (often as part of a build process). As changes to the model are made, the generator will be run and new code is created.
It's easy to think about how to use code generation on new projects that build new code, but what about existing an code base? We all love new code, but most of us get paid to work on old code. Is there a way we can use code generation to aid us in extending and maintaining existing applications?
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