Spring Integration 1.0.X
and whats coming in 2.0
Jonas Partner
OpenCredo Principle Consultant
Spring Integration Committer
www.opencredo.com
Tuesday, 20 October 2009

Agenda
• Enterprise Integration Patterns
• Why Spring Integration
• What Spring Integration provides
• Whats new in SI 2.0
• Questions
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Enterprise Integration Patterns
• Book by Gregor Hohpe and Bobby Wolf
• Documents
– Styles of Integration database, file, messages
and channels
– Patterns
• Splitter
• Router
• Transformer
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Messages
Generic package for data (the Message payload) that can
be transported via channels
Headers provide information to other components that
consume from channels
Sequence Number
Headers
Sequence Size
...
Payload
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Channels
Channels deliver messages from producers
to consumers
Producer Channel Consumer
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Why use messaging 1/2
• Louse coupling
– Localise impact of changes
– Improve separation of concerns
• Easy Interception
– Mediation
– Filtering
– Reroute
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Why use messaging 2/2
• Performance
– Less blocking since async
– Efficient use of resources
• Threads
• DB Connections
– More effective use of multi core processors
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Agenda
• Enterprise Integration Patterns
• Why Spring Integration
• What Spring Integration provides
• Whats new in SI 2.0
• Questions
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Why Spring Integration
• Spring goodness in the integration space
– Light weight, not a server
– Non invasive POJO programming model
– Builds on strong foundation, Spring
• Reusable Enterprise Integration Pattern
implementations
• Message and Channel approach useful for
non integration applications
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Light Weight
• Spring Integration != Spring ESB
• Simply components in applications context
– Wiring together through dependency injection
– Channels beans, adapters beans ...
– Follows application context lifecycle
• Simple adoption
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Agenda
• Why Spring Integration
• Enterprise Integration Patterns
• Spring Integration provides
– Enterprise Integration Patterns
implementation
– Message and Channel framework
– Adapters
• Whats new
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Transformer
@Transformer
public Document convert(Document doc){
return convertToNewFormat(doc);
}
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Splitter
@Splitter
public List<Document> orderItems(Document doc){
return splitOrder(doc);
}
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Router
@Router
public String resolveDrinkChannel(Drink drink) {
return (drink.isIced()) ? "coldDrinks" : "hotDrinks";
}
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Chain
<chain input-channel="input" output-channel="output">
<filter ref="someSelector" throw-exception-on-rejection="true"/>
<header-enricher error-channel="customErrorChannel">
<header name="foo" value="bar"/>
</header-enricher>
<service-activator ref="someService" method="someMethod"/>
</chain>
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Agenda
• Why Spring Integration
• Enterprise Integration Patterns
• Spring Integration provides
– Enterprise Integration Patterns
implementation
– Message and Channel framework
– Adapters
• Whats new
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Adapter
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Current Adapters
• JMS
• RMI
• Http Invoker
• HTTP
• File
• Spring Web Services
• Mail Spring Application Events
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Agenda
• Why Spring Integration
• Enterprise Integration Patterns
• Spring Integration provides
– Enterprise Integration Patterns
implementation
– Message and Channel framework
– Adapters
• Whats new in 2.0
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Spring Integration 2.0 1/2
• Due late this year
– JDBC
– Twitter??
– Suggestions/requests/contributions
• Improved testing framework
• Spring 3.0 expression language
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Spring Integration 2.0 2/2
• XQuery
• JMS Backed channel (not an adapter)
• Other patterns
– Claim Check
– Scatter Gather
– Process Manager....
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Also Spring Extensions
• Home to FTP adapters and other
contributions
– http://www.springsource.org/extensions/
se-sia
• Spring Integration .Net
– http://www.springsource.org/extensions/
se-springintegration-net
– Nearly a port of java.util.concurrent
http://www.springsource.org/extensions/
se-threading-net
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009

Questions and the usual book plug
© 2009 Open Credo Ltd www.opencredo.com
Tuesday, 20 October 2009