SpeADL Minus Tutorial¶

This is a tutorial for SpeADL⁻: creating a project, defining simple and composite components, implementing components.

Objectives¶

The objective of this tutorial is to understand the basic workflow to follow when developing component-oriented applications with SpeADL in Eclipse/MAY.

We will create a simple composition of two components connected together following a typical client-server configuration.
The server will provide a service that will be used by the client.
They will be composed together in a big component.
A Java main() will be created to show how to execute the composition once.
A very simple GUI will be used to illustrate a self-contained component acting as an application.

Installing Eclipse and MAY¶

This procedure is described on this page.

Creating a New Project¶

First, we must create a project to work.

In Eclipse, go to the menus : File / New / Java Project.

Enter Tutorial 1 as the project name, verify that the execution environment JRE is 1.5 or above.

As a start, create a package in the src folder called tutorial1.

The Server Component¶

Create the following hierarchy of packages (See this best practice for details on the matter):

• tutorial1.server
  • impl
  • interfaces
  • datatypes

Create a SpeADL file:

• Right-click on tutorial1.server and select New / File.
• Enter server.speadl as the file name.

Define the namespace we are going to work in as well as the Server component:

namespace tutorial1.server {
    component ServerComponentType {

    }
}