Enterprise Web 2.0
Architectures: from pristine Java
EE to fully-loaded frameworks
Vinicius Senger Alberto Lemos
Globalcode Globalcode
Enterprise Architect Enterprise Architect

This talk…
> Presents five solid, different Java EE architectures

Each one is based on our consulting experience
over the past year
> Discusses the reality of Java Enterprise
Architecture implementations
> Presents successful project and consulting
techniques
2

Agenda
> Introduction
> Architectures:
1. Pure Web
2. Web + EJB + JMS
3. Spring
4. JBoss Seam
5. Spring + JBoss Seam
> Tools & Tips
> Conclusions
3

Presenters
> Vinicius Senger
> Alberto Lemos - Dr. Spock
 Founders of GlobalCode

Brazilian Java consulting, implementation, and education
 Over 18 years of software development experience

Java Enterprise Consumers – not API writers…
4

Previous JavaOne presentations
> 2004: From Simple JSP Technology to Full J2EE
Platform in 10 Steps: Stress Test-Based
Refactoring, 2004
> 2005: Where Is the Bottleneck? A Quantitative
Study of the Impact of MVC Frameworks;
> 2007: Stress Your Web App Before It Stresses
You: Tools and Techniques for Extreme Web
Testing,
5

Agenda
> Introduction
> Architectures:
1. Pure Web
2. Web + EJB + JMS
3. Spring
4. JBoss Seam
5. Spring + JBoss Seam
> Tools & Tips
> Conclusions
6

What matters in your Java EE
environment?
Scalability Maintainability Reliability
Availability Extensibility Manageability
Performance Mobility Compatibility
Usability Connectivity Testability
Modularity Interoperability Security
Toolability Auditability Risk
Commercial Support Cost Productivity
Team Skills Accessibility Sustainability
7

Evans Data Corporation
Application Server Rankings in September, 2008
Scalability Maintainability Reliability
Availability Extensibility Manageability
Performance Mobility Compatibility
Usability Connectivity (DB) Testability
Modularity Interoperability Security
Toolability Auditability Risk
Commercial Support Cost Productivity
Team Skills Accessibility Sustainability
8

What our customers demand
Scalability Maintainability Reliability
Availability Extensibility Manageability
Performance Mobility Compatibility
Usability Connectivity Testability
Modularity Interoperability Security
Toolability Auditability Risk
Commercial Support Cost Productivity
Team Skills Accessibility Sustainability
9

Top Java Enterprise Decisions
• Frameworks: Spring or Seam? Hibernate or
Toplink? Which JSF Ajax toolkit?
• UI Design:
• JSF, Flex, JavaFX, Swing, Wicket, GWT;
3. EJB or not
• Good things can be done without EJB;
• But someone need to take care about
transaction, security and scalability;
• Security: does it fit with Java EE security model?
• Team: what about your team skills?
10

Spring versus Seam
> Spring was born as an alternative to Java EE
> Seam created as a complimentary framework to
Java EE
> Seam and Spring focus on Web 2.0, both support
integration
> Container use:
> Seam mostly used with JBoss
> Spring used in many different containers
11

Agenda
> Introduction
> Architectures:
Pure Web
 Web + EJB + JMS
 Spring
 JBoss Seam
 Spring + JBoss Seam Architecture
> Tools & Tips
> Conclusions
12

Pure Web
Foundations
> JavaServer Faces 1.2
> Facelets 1.1.x
> JSF Ajax component library
> Uses Managed Beans as main components:
 Controller / Business / DAO Managed Bean
 Use of basic resource injection

Managed Beans dependency with managed
property
13

Pure Web
Discussion
> Advantages

Simplicity
 Support from many tools

Compatibility with many different containers
> Disadvantages
 Limited transaction and security management

Low modularity
14

Pure Web
Discussion
> GoF Patterns can be applied into Managed Beans:

Mediator, Façade, State
 Memento, Decorator;
15

Pure Web
Where we are using?
> Startup projects
> Compatibility and cross-vendor environments
> Big development team
> Lower complexity projects
16

Agenda
> Introduction
> Architectures:
 Pure Web
 Web + EJB + JMS
 Spring
 JBoss Seam
 Spring + JBoss Seam Architecture
> Tools & Tips
> Conclusions
17

Web + EJB + JMS
Foundations
JavaServer Faces
}
>
> Facelets Used in Pure Web
> JSF Ajax component library
> EJB 3.0
 Session and message-driven
 For business domain code

Provides componentization and modularization
> JMS and MDBs for critical business processes
18

Web + EJB + JMS
Discussion
> Advantages

Support from many tools
 Compatibility with different containers

Better modularity with EJBs
 Increased reliability with JMS and MDBs
> Disadvantages

Greater complexity
19

Web + EJB + JMS
Where we are using?
> Senior team with Java EE 5 experience
> Scalability available with Java EE
> Conservative business scenario
> Cross-vendor environment
20

Agenda
> Introduction
> Architectures:
 Pure Web
 Web + EJB + JMS
 Spring
 JBoss Seam
 Spring + JBoss Seam
> Tools & Tips
> Conclusions
21

Spring
Foundations
JavaServer Faces
}
>
> Facelets Used in Pure Web
> JSF Ajax component library
> POJOs and message-driven POJOs
> Spring component (POJO)
 Business domain code
> Spring AOP
> Spring Security
22

Spring
Discussion
> Advantages

Credibility from users
 Integration: Struts, JSF, EJB, POJO, Wicket, etc.

Modularity support with OSGi
 Strong AOP support and culture;
> Disadvantages

Not a JCP Standard;
 Commercial Support (at least for our market!)
 Future?
23

Spring
Where we are using
> Senior teams of developers
> Complex Transaction and security
> Integration with non-specified (JCP) technologies
and frameworks
> Reliable and conservative enterprise architecture
24

Agenda
> Introduction
> Architectures:
 Pure Web
 Web + EJB + JMS
 Spring
 JBoss Seam
 Spring + JBoss Seam Architecture
> Tools & Tips
> Conclusions
25

JBoss Seam
Foundation
> Integration model for Java EE
JavaServer Faces
}
>
Used in Pure Web
> Facelets
> JSF AJAX Component library
> With or without EJBs
> Uses Seam Component (POJO) as main component
> Security with JBoss Rules
26

JBoss Seam
Discussion
> Advantages

Anticipate Java EE 6: bookmarkable URL,
conversation, injection, validation;
 JSR 299 - Contexts and Dependendency Injection
for the Java EE platform
 Transparent use of EJBs
> Disadvantages

Harder container migration
 Deployment time difficulty

Future with Java EE 6
27

JBoss Seam
Where we are using?
> Projects already using JBoss Platform
> More complex Web applications
> Applications that require
 Support for BPM and SOA

Better security model for Web
 Contexts for integration / long term transaction
28

JBoss Seam
DEMO
29

Agenda
> Introduction
> Architectures:
 Pure Web
 Web + EJB + JMS
 Spring
 JBoss Seam
 Spring + JBoss Seam
> Tools & Tips
> Conclusions
30

Spring + JBoss Seam
Foundation
JavaServer Faces
}
>
Used in Pure Web
> Facelets
> JSF Ajax Component Library
> Components
 Spring
 Seam
> Spring Security
> Spring AOP
“Imagine all the frameworks
living life in piece.”,
31

Spring + JBoss Seam
Discussion
> Spring benefits
 Integration model for enterprise applications with
enterprise services
 Simplifies the usage of AOP and OSGi
 Great solution for the business tier
 Best for stateless components
> Seam benefits
 Provides asynchronous, concurrent and stateful access
to components in a Web context
 Manages the persistence context at the Web tier
 Great solution for the presentation tier
 Best for stateful components
32

Spring + JBoss Seam
Recommendations
> Requires experienced senior team
> Large legacy code: Struts, Spring, JSF, EJB…
> High TCO
> Hard maintenance
> Extreme Learning Curve
33

Spring+Seam
DEMO
34

Agenda
> Introduction
> Architectures:
1. Pure Web
2. Web + EJB + JMS
3. Spring
4. JBoss Seam
5. Spring + JBoss Seam
> Tools & Tips
> Conclusions
35

Improving JSF 1.2
> PrettyFaces

Bookmarkable URL in JSF 1.2
> FacesAnnotations
 Protected managed bean methods with declarative
security
 SecurityRoles
> JSFSecurity

JSF Expression Language extended to improve
security inside pages
 securityScope
36

Where is the architecture’s code?
37

SuperCRUD.com
> Web engine to generate CRUD applications based
on collaborative artifacts;
> Online entity editor;
> Different architecture templates can be used,
including the 5 presented architectures;
> Templates can be customized;
> Artifacts templates can be customized;
> Open-source project;
38

SuperCRUD.com
DEMO
39

Agenda
> Introduction
> Architectures:
1. Pure Web
2. Web + EJB + JMS
3. Spring
4. JBoss Seam
5. Spring + JBoss Seam
> Tools & Tips
> Conclusions
40

Conclusions
> Java EE + frameworks achieve most of the
companies needs;
> Architectures may vary depending on localization;
> Pure Java EE 6 architectures will be much more
powerful;
41

Our Java EE map:
#1 #2 #3 #4 #5
web web+ejb Spring Seam Seam+Spring
Scalability
Team skills
Tools
Productivity
Commercial
Support*
Cost
Security
OSGi
SOA
Web 2.0
42

Java EE 6
Java EE 6
Scalability
Team skills
Tools
Productivity
Commercial Support*
Cost
Security
OSGi Glassfish
SOA
Web 2.0
43

What your project are looking for?
Scalability Maintainability Reliability
Availability Extensibility Manageability
Performance Mobility Compatibility
Usability Connectivity Testability
Modularity Interoperability Security
Toolability Auditability Risk
Commercial Support Cost Productivity
Team Skills Accessibility Sustainability
44

THANKS!
Vinicius Senger
vinicius@globalcode.com.br
Alberto Lemos
spock@globalcode.com.br
www.globalcode.com.br
www.supercrud.com
45

Vinicius Senger
vinicius@globalcode.com.br
Alberto Lemos
alberto@globalcode.com.br
46