Adding Roo to a project using pull-out refactoring

The pull-out refactoring is the reverse of push-in refactoring. In push-out refactoring you extract methods and attributes from the Java source file and move it to an AspectJ ITD file. This feature is particularly useful in the following situations:

• If you had earlier performed push-in refactoring on your Roo project, and now you want to develop your project once again using Spring Roo

• If you have partially developed a project and now you want to use Spring Roo in its development

• In this recipe we'll look at how to pull-out the toString method from the Flight.java file to Flight_To_String.aj file.

Getting ready

Follow the instructions specified in the Removing Roo with push-in refactoring recipe to push the toString method defined in the Flight_To_String.aj file to Flight.java file.

How to do it...

Follow these steps to move the code from Java source file to an AspectJ ITD file:

1. Create a Flight_To_String.aj file in the sample.roo.flightapp.domain...