Scaffolding GWT applications from JPA entities

In this recipe, we'll look at the gwt setup command, which scaffolds GWT artifacts from JPA entities.

Getting ready

Create a new directory (C:\roo-cookbook\ch05-gwt) in your system. Copy the ch05_gwt_app.roo script that accompanies this book to the ch05-gwt directory. Start the Roo shell from the ch05-gwt directory and execute the ch05_gwt_app.roo script using the script command. Executing the ch05_gwt_app.roo script does the following:

• Creates a flightapp-gwt Eclipse project

• Sets up Hibernate as a persistence provider

• Configures MySQL as the database for the application

• Creates Flight and FlightDescription JPA entities and defines a many-to-one relationship between Flight and FlightDescription entities

If you are using a different database than MySQL or your connection settings are different from what is specified in the script, then modify the script accordingly.

Install the Google Plugin for Eclipse IDE (http://code.google.com/eclipse/); it simplifies...