This documentation covers the version 2.0.0 of the framework.
The aim of the framework
Splitting complex requirements into little pieces of software is a good approach in software development. Think of micro services: Small pieces of software fulfill a part of functionality. If you put them together you've a powerful application.The smallest unit in the SCF is the
Command object. A
Command is a java class which provides a little piece of functionality in it's
executeCommand() - method. The glue between several
Command objects is the
ParameterObject. This can be anything derived from
java.lang.Object which is not final (of course you want to change values).
Add the framework into your maven project
To run unit tests add the following dependency in maven:
Browse the JavaDoc for more information
Start implementing your first test
- Line 12: The first test is a test of the factory method. It is best practice to provide a factory method for each command.
- Line 17: Here is the actual implementation of the executeCommand() method. For a simple use of commands this is the entry point of your business logic.
- Line 19: The framework works with parameter objects. SCF offers a generic implementation of such an object. It is best practice to create your own object but if you want to reuse the command in several environments it make sense just work with the generic one.
We want to assert that a key is generated in the command with value "Hello World" and the command executes with result SUCCESS.
Start implementing your first command
To prevent to implement the legacy methods all the time, you can implement an
Create a second command
Sticking both commands together
SCF is a framework is need for all situations where you
- want to write code fragments, which are loose coupled.
- want to write command chains which you will execute.
- want to write strategies.
SCF comes with interfaces and default implementation.
This example is part of simple-command-tools. You can clone it or download it directly here.