In this talk we are going to present a preview of Spring Roo 2.0, a rewrite of the code generating tool for the development of Java web applications based on current Spring technologies like Spring Boot, Spring Data, etc.

1. Spring Roo 2.0
César Ordiñana & Enrique Ruiz

2. Spring Roo 2.0 Preview
What is Spring Roo
Current GA release: Spring Roo 1.3.2
What’s new in Spring Roo 2.0
Live demo

3. What is Spring Roo?
An easy-to-use development tool for quickly building web
applications in the Java programming language
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/ _ / | _ | _ _ _ _ / _ _ _ _ / 2 . 0 . 0 . M 2
W e l c o m e t o S p r i n g R o o . F o r a s s i s t a n c e p r e s s T A B o r t y p e " h i n t " t h e n h i t E N T E R .
S p r i n g R o o E a s t e r n G r e y U I s t a r t e d a t ' h t t p : / / l o c a l h o s t : 9 1 9 1 / '
r o o >

4. What Spring Roo is NOT
Spring Roo is not a framework, it is not used in runtime.

5. Spring Roo engine features
Code generation engine
Programmers code (.java) isolated from generated code
(.aj)
Roo will never overwrite programmers code
Passive and active code generation
Runtime performance not affected by Roo

6. Why use it?
Higher productivity
Stock-Standard Java and Spring
Bootstraping, maintenance and evolution

7. Spring Roo 1.x
Applications based on
old technologies
Deprecated
architecture Active
Record
Generated code should
be easier to customize
Extremely simple UI
Basic REST support

8. Spring Roo 2.0: a new
philosophy
Focused on newer Spring technologies
Create Spring Boot applications
Java-based configuration model
Generate as few code as possible
Easier code customization
Thymeleaf view layer

9. Demo: New features
Spring IO platform and Boot applications
Global project settings
Conditional command parameters
push-in command
Full support for Spring Data repositories
Improved REST services
New view: Thymeleaf, Bootstrap and JQuery datatables

10. Create a new project
New > Project > Spring Roo
r o o > p r o j e c t s e t u p - - t o p L e v e l P a c k a g e o r g . s p r i n g i o . t i c k e t
- - p r o j e c t N a m e " S p r i n g I O T i c k e t s " - - j a v a 8 - - p a c k a g i n g J A R

11. Spring IO and Boot
application
Spring IO and Boot in the pom.xml
Main Boot Application class

12. Data Access Layer
r o o > j p a s e t u p - - p r o v i d e r H I B E R N A T E - - d a t a b a s e P O S T G R E S - -
j p a s e t u p - - p r o v i d e r H I B E R N A T E - - d a t a b a s e P O S T G R E S - - d a t a b a s e N a m e
j p a s e t u p - - p r o v i d e r H I B E R N A T E - - d a t a b a s e P O S T G R E S - - f o r c e
j p a s e t u p - - p r o v i d e r H I B E R N A T E - - d a t a b a s e P O S T G R E S - - h o s t N a m e
j p a s e t u p - - p r o v i d e r H I B E R N A T E - - d a t a b a s e P O S T G R E S - - j n d i D a t a S o u r c e
j p a s e t u p - - p r o v i d e r H I B E R N A T E - - d a t a b a s e P O S T G R E S - - p a s s w o r d
j p a s e t u p - - p r o v i d e r H I B E R N A T E - - d a t a b a s e P O S T G R E S - - p r o f i l e
j p a s e t u p - - p r o v i d e r H I B E R N A T E - - d a t a b a s e P O S T G R E S - - u s e r N a m e

13. Improved usability
r o o > j p a s e t u p - - p r o v i d e r H I B E R N A T E - - d a t a b a s e H 2 _ I N _ M E M O R Y - -
j p a s e t u p - - p r o v i d e r H I B E R N A T E - - d a t a b a s e H 2 _ I N _ M E M O R Y - - f o r c e
j p a s e t u p - - p r o v i d e r H I B E R N A T E - - d a t a b a s e H 2 _ I N _ M E M O R Y - - p r o f i l e
r o o > j p a s e t u p - - p r o v i d e r H I B E R N A T E - - d a t a b a s e H 2 _ I N _ M E M O R Y

14. Domain model
Easily create your JPA domain model with the entity jpa
and field add commands.
r o o > e n t i t y j p a - - c l a s s ~ . m o d e l . T i c k e t
~ . m o d e l . T i c k e t r o o > f i e l d s t r i n g - - f i e l d N a m e n a m e
- - c o m m e n t " T h e t i c k e t ' s n a m e " - - n o t N u l l
- - s i z e M i n 5 - - s i z e M a x 2 0
@ M i n ( 1 )
@ M a x ( 1 0 0 0 )
p r i v a t e I n t e g e r q u a n t i t y ;
~ . m o d e l . T i c k e t r o o > f i e l d n u m b e r - - f i e l d N a m e p r i c e
- - t y p e j a v a . l a n g . I n t e g e r
- - c o m m e n t " T h e s e l l i n g p r i c e "
- - m i n 0 - - m a x 1 0 0 0

15. Tests
Create a unit test
r o o > t e s t u n i t - - c l a s s ~ . m o d e l . T i c k e t

16. Customize the code
Overwrite Roo generated methods
TicketTest.java
p u b l i c c l a s s T i c k e t T e s t {
p r i v a t e T i c k e t t i c k e t ;
@ B e f o r e p u b l i c v o i d s e t u p ( ) {
t h i s . t i c k e t = n e w T i c k e t ( ) ;
t h i s . t i c k e t . s e t N a m e ( " E a r l y B i r d " ) ;
t h i s . t i c k e t . s e t Q u a n t i t y ( 7 5 ) ;
t h i s . t i c k e t . s e t P r i c e ( 2 1 9 ) ;
t h i s . t i c k e t . s e t I d ( 1 l ) ;
t h i s . t i c k e t . s e t V e r s i o n ( 1 ) ;
}
}

17. Customize the code (II)
Create your own methods
TicketTest.java
p u b l i c c l a s s T i c k e t T e s t {
@ T e s t
p u b l i c v o i d c h e c k T o S t r i n g C r e a t e s E x p e c t e d V a l u e ( ) {
a s s e r t E q u a l s ( " E a r l y B i r d , 7 5 , 2 1 9 , 1 , 1 " ,
t i c k e t . t o S t r i n g ( ) ) ;
}
}

18. Customize the code (III)
New command: push-in
r o o > p u s h - i n - - c l a s s ~ . m o d e l . T i c k e t - - m e t h o d t o S t r i n g
Test.java
p u b l i c S t r i n g t o S t r i n g ( ) {
r e t u r n R e f l e c t i o n T o S t r i n g B u i l d e r . t o S t r i n g ( t h i s ,
T o S t r i n g S t y l e . S I M P L E _ S T Y L E ) ;
}

19. Project settings
Define the project standards and let Roo control them for
you
r o o > s e t t i n g s a d d - - n a m e s p r i n g . r o o . j p a . r e q u i r e . s c h e m a - o b j e c t - n a m e
- - v a l u e t r u e
r o o > e n t i t y j p a - - c l a s s ~ . m o d e l . C u s t o m e r
Y o u m u s t s p e c i f y o p t i o n ' t a b l e ' f o r t h i s c o m m a n d

20. More domain model
Ticket → Customer
r o o > s c r i p t - - f i l e ~ / E s c r i t o r i o / c u s t o m e r s . r o o

21. Repository
r o o > r e p o s i t o r y j p a - - e n t i t y ~ . m o d e l . T i c k e t
r o o > r e p o s i t o r y j p a - - a l l - - p a c k a g e ~ . r e p o s i t o r y

22. Repository queries
r o o > f i n d e r a d d - - c l a s s ~ . m o d e l . T i c k e t
- - n a m e f i n d B y A v a i l a b l e G r e a t e r T h a n A n d N a m e C o n t a i n i n g O r d e r B y N a m e A s c

23. Service Layer
r o o > s e r v i c e - - e n t i t y ~ . m o d e l . T i c k e t
- - r e p o s i t o r y ~ . m o d e l . T i c k e t R e p o s i t o r y
- - i n t e r f a c e ~ . s e r v i c e . T i c k e t S e r v i c e
r o o > s e r v i c e - - a l l - - a p i P a c k a g e ~ . s e r v i c e . a p i
- - i m p l P a c k a g e ~ . s e r v i c e . i m p l

24. Your business logic
r o o > p u s h - i n - - c l a s s ~ . s e r v i c e . i m p l . C u s t o m e r S e r v i c e I m p l - - m e t h o d s a v e
CustomerServiceImpl.java
p r i v a t e f i n a l T i c k e t S e r v i c e t i c k e t S e r v i c e ;
@ A u t o w i r e d
p u b l i c C u s t o m e r S e r v i c e I m p l ( C u s t o m e r R e p o s i t o r y c u s t o m e r R e p o s i t o r y ,
T i c k e t S e r v i c e t i c k e t S e r v i c e ) {
t h i s . c u s t o m e r R e p o s i t o r y = c u s t o m e r R e p o s i t o r y ;
t h i s . t i c k e t S e r v i c e = t i c k e t S e r v i c e ;
}
p r i v a t e v o i d u p d a t e T i c k e t Q u a n t i t y ( C u s t o m e r e n t i t y ) {
i f ( e n t i t y . g e t I d ( ) ! = n u l l ) {
T i c k e t t i c k e t = e n t i t y . g e t T i c k e t ( ) ;
t i c k e t . s e t Q u a n t i t y ( t i c k e t . g e t Q u a n t i t y ( ) - 1 ) ;
t i c k e t S e r v i c e . s a v e ( t i c k e t ) ;
}
}

25. Your business logic (II)
CustomerServiceImpl.java
@ T r a n s a c t i o n a l ( r e a d O n l y = f a l s e )
p u b l i c C u s t o m e r s a v e ( C u s t o m e r e n t i t y ) {
u p d a t e T i c k e t Q u a n t i t y ( e n t i t y ) ;
r e t u r n c u s t o m e r R e p o s i t o r y . s a v e ( e n t i t y ) ;
}
@ T r a n s a c t i o n a l ( r e a d O n l y = f a l s e )
p u b l i c L i s t < C u s t o m e r > s a v e ( I t e r a b l e < C u s t o m e r > e n t i t i e s ) {
f o r ( C u s t o m e r c u s t o m e r : e n t i t i e s ) {
u p d a t e T i c k e t Q u a n t i t y ( c u s t o m e r ) ;
}
r e t u r n c u s t o m e r R e p o s i t o r y . s a v e ( e n t i t i e s ) ;
}

26. Presentation Layer
You choose:
Control only → REST Services
Control and View → REST Services + Thymeleaf

27. Adding web support
w e b m v c s e t u p

28. REST Services
w e b m v c c o n t r o l l e r - - a l l - - p a c k a g e ~ . w e b

29. Generating the view
w e b m v c v i e w s e t u p - - t y p e T H Y M E L E A F

30. Customize the views
w e b m v c t e m p l a t e s s e t u p - - t y p e T H Y M E L E A F

31. Views and handler
methods
w e b m v c c o n t r o l l e r - - a l l - - p a c k a g e ~ . w e b - - r e s p o n s e T y p e T H Y M E L E A F

32. Powerful code generation
f i e l d s t r i n g - - f i e l d N a m e d e s c r i p t i o n

33. Roadmap
DTOs code generation
Non-CRUD REST services
Integration layer
Security layer
Auditing of persistent classes
WebJars integration
UI widgets

34. Questions?
 http://projects.spring.io/spring-roo/
 https://github.com/spring-projects/spring-roo
 http://stackoverflow.com/questions/tagged/spring-roo
 https://twitter.com/SpringRoo
 http://www.disid.com

35. Roo it!
Create your Boot applications with Spring Roo 2!