[FELIX-4784] Using iPOJO in a JavaFX Application

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: iPOJO
• Environment: Ubuntu 14.04, Java 8 - JavaFX 8, Apache Felix
• Assignee: Unassigned
• Reporter: Arjay Sitoy
• Created: 03/Feb/15 13:35
• Updated: 20/Jun/16 06:04

Description

I am doing a Javafx application in Apache Felix along with some experiments using iPOJO. I also posted the same question in StackOverflow.

First is I called the Application.launch() method in a different class and then start an another class containing the iPOJO @Requires like this:

public class JavafxApp extends Application {
    @Override
    public void start(Stage primaryStage){
        /* Do nothing here because I thought I can initialize JavaFX in a different class */
    }

    public void start(){
        Platform.runLater(() -> {
            launch(JavafxApplication.class);
        });
    }
}

public class MyApplication {
    @Requires
    LibraryClass class;

    @Validate
    public void start(){
        JavafxApp.start();
        class.someMethod();
    }

}

This implementation throws this exception, java.lang.IllegalStateException: Toolkit not initialized but the iPOJO located the implementation class of the LibraryClass interface.

After some research I found out that the application should be inside the class that extends the javafx.application.Application so I did some restructuring.

public class JavafxApp extends Application {

    @Requires
    LibraryClass class;

    @Override
    public void start(Stage primaryStage){
        class.someMethod();
    }

    @Validate
    public void start(){
        launch(JavafxApp.class);
    }

}

Now the iPOJO throws a RuntimeException and the LibraryClass becomes null and the application throws a NullPointerException.

My questions are:

• Is it possible to use iPOJO in this situation?
• If it is what is the right way to use iPOJO in a JavaFX application?