Book Image

Spring Roo 1.1 Cookbook

Book Image

Spring Roo 1.1 Cookbook

Overview of this book

Spring Roo is an easy-to-use productivity tool for rapidly developing Java enterprise applications using well-recognized frameworks such as Spring, Hibernate, AspectJ, Spring Web Flow, Spring Security, GWT, and so on. Spring Roo takes care of creating maven-enabled projects, enterprise application architecture based on your choice of technologies, unit/integration tests based on your choice of testing framework, and so on. The bottom line is that if you're using Spring, then you must consider using Spring Roo for increased productivity. Spring Roo 1.1 Cookbook brings together a collection of recipes that demonstrate how the Spring Roo developer tool simplifies rapidly developing enterprise applications using standard technologies/frameworks such as JPA, GWT, Spring, Flex, Spring Web Flow, Spring Security, and so on. It introduces readers to developing enterprise applications for the real world using Spring Roo tool. The book starts off with basic recipes to make readers comfortable with using Spring Roo tool. As the book progresses, readers are introduced to more sophisticated features supported by Spring Roo in the context of a Flight Booking application. In a step-by-step by fashion, each recipe shows how a particular activity is performed, what Spring Roo does when a command is executed, and why it is important in the context of the application being developed. Initially, you make a quick start with using Spring Roo through some simple recipes. Then you learn how Spring Roo simplifies creating the persistence layer of an enterprise application using JPA. You are introduced to the various roo commands to create JPA entities, create relationships between JPA entities, create integration tests using Spring TestContext framework, and so on. Following this, the book shows you how Spring Roo simplifies creating the web layer of an enterprise application using Spring Web MVC, Spring Web Flow, and how to create selenium tests for controller objects. Subsequently, we focus on using Spring-BlazeDS, GWT, JSON, and so on. Spring Roo commands that are used to incorporate e-mail/messaging features into an enterprise application are demonstrated next. Finally, we wrap it up with some miscellaneous recipes that show how to extend Spring Roo via add-ons, incorporate security, create cloud-ready applications, remove Spring Roo from your enterprise application, and so on.
Table of Contents (14 chapters)
Spring Roo 1.1 Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Creating a Java interface


You can use Spring Roo's interface command or an IDE to create a Java interface. In this recipe, we will see how we can create an interface named FlightServiceIntf.

Getting ready

Start the Roo shell from the C:\roo-cookbook\ch01-recipe directory, which contains the flight-app Roo project.

How to do it...

Spring Roo provides the interface command to create a Java interface, as shown here:

roo> interface --class sample.roo.flightapp.service.FlightServiceIntf

Created SRC_MAIN_JAVA\sample\roo\flightapp\service\FlightServiceIntf.java

sample.roo.flightapp.service.FlightServiceIntf roo>

How it works...

The following table describes the arguments that the interface command accepts:

Argument

Purpose

class

It is a mandatory argument, which specifies the fully-qualified name of the Java interface.

path

It is an optional argument, which identifies the directory in which to create the interface, default being SCR_MAIN_JAVA.

permitReservedWords

It is an optional argument, which instructs Spring Roo to allow reserved words in the name of Java interface.

There's more...

Using Spring Roo you can't add constants or declare methods in your Java interface. To add constants or methods, you need to use your IDE. You may have noticed that the rooAnnotations argument is not available for the interface command; therefore, you can safely assume that Spring Roo doesn't generate any code corresponding to a Java interface when you make modifications to it.

See also

  • The Creating a Java class recipe shows how to create a Java class using Spring Roo