Time for action – examining configuration properties

Let us add some configuration properties to our MyAction. We will make the & and the number of times it needs to be printed as configurable properties. Follow these steps:

  1. Add two members to the MyAction class:
    public String SYMBOL = "&";
public int COUNT = 48;
  2. Modify the constructor as follows:
    _config = config;
String symbol = _config.getAttribute("symbol");
if (symbol != null) {
    SYMBOL = symbol;
}
String count = _config.getAttribute("count");
if (count != null) {
    COUNT = Integer.parseInt(count);
}
  3. Add a printLine() method:
    private void printLine() {
    StringBuffer line = new StringBuffer(COUNT); 
    for (int i = 0; i < COUNT; i++) {
        line.append(SYMBOL);
    }
    System.out.println(line);
}
  4. Modify the printMessage() method as shown in the following snippet:
    printLine();
System.out.println("Body: " + message.getBody().get());
printLine();
return message;
  5. Edit the jboss-esb.xml file and select the action, BodyPrinter. Add two properties symbol as * and count as 50:
    Time for action – examining configuration properties
  6. Click on Save or press Ctrl + S.
  7. Deploy the application using the Run menu and select Run As | Run on Server.
  8. Run SendJMSMessage.java by clicking Run, select Run As and Java Application.

    The following message will be printed in the console:

    INFO  [STDOUT] **************************************************
INFO  [STDOUT] Body: Chapter 3 says Hello!
INFO  [STDOUT] **************************************************

What just happened?

You just added two properties to the MyAction class. You also retrieved these properties from the ConfigTree and used them.

Have a go hero – additional header contents

Experiment with the other API methods. Write hierarchicalProperty and see how that can be retrieved.

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