Overview

The Commands API project contains functionality which extends the Commons Chain project and which makes usage of Chain commands easier.

The Commons Chain project is an open source Java implementation of the Command design pattern described by Gamma et al. in "Design Patterns". Information about the Commons Chain project can be found here.

The Commands API project contains:

• Guideline for implementation of Chain commands in the Pineapple project using the classes in the commands API project.
• Command runner which is used to execute commands.
• Command initializer which initialize the fields of commands with values from the command context using annotations on the command fields. The annotation supports specification of runtime validation of the context values.
• Exception class for Chain commands implemented in the Pineapple project.
• Command dispatcher which implements execution queues which supports asynchronous and synchronous execution of commands.

Deprecated stuff:

• Chain factory which supports loading of Chain catalogs, lookup of commands from loaded catalogs and a simple interface to run commands.
• Test command marker interface which is implemented by Chain commands in the Pineapple project which implements a command which tests something on a resource.
• Test runner which is specialized command runner which is used to execute test commands and collect and report the result.