In this tech talk, Rick Evans will introduce Spring BlazeDS Integration. Spring BlazeDS Integration is a Spring Portfolio project that makes it easier to build Rich Internet Applications for the enterprise using Flex and Spring. Integrating the powerful remoting and messaging features of Adobe BlazeDS with the familiar Spring programming model, Spring BlazeDS Integration is a great jumping-on point for Java developers looking to front Spring-based server-side enterprise applications with rich and polished Flex front-ends on the client. Some previous exposure to Spring and Flex is best if you want to get maximum benefit from the talk.

1. Spring BlazeDS Integration
Adobe RIA London User Group
Rick Evans
Skills Matter

2. Two Great Flavours

3. Spring BlazeDS Integration
Overviews of...
Spring
BlazeDS
Spring BlazeDS Integration
Roadmap
Q&A... Pub

4. Spring
Spring is
a Java framework
for developing enterprise applications
it handles the infrastructure
so that you can focus on developing your application
latest version is 3.0.x

5. Spring
Rich ecosystem of Spring projects
Spring Batch
Spring WebFlow
Spring Security
Spring Roo
Grails
Spring BlazeDS Integration
Spring ActionScript – Flex DI/IOC

6. Spring

7. BlazeDS

8. Remoting Basics :: Client
<mx:RemoteObject id="instrumentService"
destination="instrument-static"/>
<mx:DataGrid id="instrumentStatic"
dataProvider="{instrumentService.getStatic.lastResult}"/>
<mx:Button label="Load Instruments"
click="instrumentService.getStatic()"/>
(in some MXML file of the client-application source)

9. Remoting Basics :: Server
<destination id="instrument-static">
<properties>
<source>skillsmatter.flug.InstrumentService</source>
</properties>
</destination>
(in the file remoting-config.xml on the server)
This is vanilla BlazeDS with no Spring integration flavouring

10. Spring BlazeDS Integration
Open source BlazeDS integration library
A collaboration between Adobe and Springsource
Preserves investment in existing Spring-based server tier
Spring configuration of BlazeDS components
Idiomatic Spring remoting inline with other offerings
Spring programming model for BlazeDS components
Easier integration with other Spring Portfolio projects
Spring Security
Spring Integration (EMS)

11. Spring BlazeDS Integration
Differences from vanilla BlazeDS
No need for MessageBrokerServlet configuration
MessageBroker (MB) configured directly as a Spring bean
MB lifecycle controlled by Spring container
MB itself can benefit from dependency injection
MB can be dependency injected into dependant beans
Messages are routed through Spring's DispatcherServlet

12. Spring BlazeDS Integration

13. Remoting
BlazeDS remoting is idiomatic Spring remoting
Middle-tier services are exported for remoting by Spring
No need for separate remoting-config.xml
Exported services are agnostic of the remoting
You can effect the export via:
regular Spring beans XML config
custom <flex:namespace/> Spring namespace
annotations

14. Remoting

15. Messaging
BlazeDS messaging components are first-class Spring beans
No need for vanilla messaging-config.xml
Inversion of Control for pushing messages to consumers
MessageTemplate for basic server-push capability
Easy integration with Spring's JMS features
Custom JmsAdapter provided

16. Messaging

17. Security
Previous releases have supported Spring Security 2.x
Latest release sports Spring Security 3.0.x integration
You can apply security at...
Endpoints (URLs)
Channels (IDs)
Service methods

18. Security

19. Security
<flex:message-broker>
<flex:secured/>
</flex:message-broker>
This installs a Spring Security-specific LoginCommand
ChannelSet.[login,logout]() now integrated

20. Security
<destination id="productService">
<security>
<security-constraint>
<auth-method>Custom</auth-method>
<roles>
<role>ROLE_USER</role>
</roles>
</security-constraint>
</security>
</destination>

21. Security :: Channel
<flex:message-broker>
<flex:secured>
<flex:secured-channel channel="my-amf"
access="ROLE_USER"/>
</flex:secured>
</flex:message-broker>

22. Security :: Endpoint
<flex:message-broker>
<flex:secured>
<flex:secured-endpoint-path
pattern="**/messagebroker/**"
access="ROLE_USER"/>
</flex:secured>
</flex:message-broker>

23. Security :: Annotations
public interface BankService {
@Secured("IS_AUTHENTICATED_ANONYMOUSLY")
public Account readAccount(Long id);
@Secured("IS_AUTHENTICATED_ANONYMOUSLY")
public Account[] findAccounts();
@Secured("ROLE_TELLER")
public Account post(Account account, double amount);
}

24. Security :: Client Side
var token:AsyncToken = channelSet.login("high","5");
token.addResponder(
new AsyncResponder(
function(event:ResultEvent, token:Object = null):void {
if (event.result.authorities
.indexOf("ROLE_ADMIN") >= 0) {
// ...
}
},
function(event:FaultEvent, token:Object = null):void {}
)
);

25. Roadmap
Spring BlazeDS Integration 1.0.2
Released February 2010
Spring Security 3 Integration
Maintenance mode for 1.0.3
Spring BlazeDS Integration 1.5
BlazeDS 4 support
Serialization of Hibernate entities to AMF
(Later) LCDS support

26. Resources
Spring BlazeDS Integration Homepage
http://www.springsource.org/spring-flex
Adobe BlazeDS Homepage
http://opensource.adobe.com/blazeds/
Skills Matter Flex on Java Exchange
London, June 2010

27. Pub