The document discusses the integration of Java within SOA (Service-Oriented Architecture) composite applications, detailing interactions through web services, EJB (Enterprise JavaBeans), and ADF (Application Development Framework) bindings. It covers various techniques including Java callouts, JMS (Java Message Service) interactions, and the use of Spring components for service management. The content emphasizes creating and deploying web services and leveraging SOA suite functionalities to handle data access and management in complex application environments.

1. Java Power to the SOA DeveloperODTUG Kaleidoscope 2010Wednesday, 30th JuneClemens Utschig-UtschigLucas Jellema AMIS, The Netherlands

2. OverviewThree perspectivesJava2SOA, SOA2Java, SOA running Java insideInvoking SOA Composite Application from JavaWebService, EJB and ADF Binding; JMSCalling Java from SOA Composite applicationEJB binding, JMS Adapter Service; direct & socketJava exposed as WebService and as ADF-BC SDOJava insideBPEL Embedded Java; Mediator Java CalloutSpring Context Service Component

3. From Java, To Java, Run JavaADF BCSDO ADF-BCJavaApplicationJAX-WSJava ClassJavaApplicationEJBADFEJBJavaApplicationJMSJavaApplicationJMS

4. Some material used from the bookShipping before OOWEnd of AugustOn SOA and SOA SuiteChapters on Java inside SOA Suite (Java Callout, EmbeddedJava BPEL activity, Springcomponent)EJB and ADF BindingInteraction betweenSOA Suite & ADFSDO Services & BPEL

5. Invoking SOA Composite Application from JavaCreate Java WebService client (JAX-WS)Generate in JDeveloper, based on WSDL and XSDCall over HTTP with XML based messagesExpose EJB Binding or ADF Binding from CompositeInvoke over RMI with XML or (serialized) POJOsInteract from Java over JMS, through Direct Binding or Socket Adapter

6. Expose EJB BindingCreate the SOA Composite applicationCreate a Java Interface that describes the service to be exposedCreate an EJB binding based on that interface as external Service exposed by the compositeCreate a Mediator wired to the EJB bindingThat routes incoming requests to ‘the rest of the composite’Create the Java client that calls over RMI

7. Create Composite application, WS interface and Java Interface

8. Create the (inbound) EJB Binding

9. Invoking the SOA Composite via the EJB Binding

10. Client of EJB Binding in action

11. Inbound ADF BindingExpose a service with binding.adfBased on the same WSDL as the binding.wsWire this service to whatever the binding.ws service is wired toIncoming calls are overRMI and use XML according to WSDL/XSD

12. Client for ADF BindingUse SOA Suite run-time Java APILocator classpointed at t3://localhost:8001/soa-infraLookup Compositedefault/FilterAndTranslateWithADFBinding!1.0Find ServiceInvoke with XML messageResponse returned in XML

13. OverviewThree perspectivesJava2SOA, SOA2Java, SOA running Java insideInvoking SOA Composite Application from JavaWebService, EJB and ADF Binding; JMSCalling Java from SOA Composite applicationEJB binding, JMS Adapter Service; direct & socketJava exposed as WebService and as ADF-BC SDOJava insideBPEL Embedded Java; Mediator Java CalloutSpring Context Service Component

14. Invoking External Java based logicExpose Java application as JAX-WS WebServiceExpose ADF-BC with (SDO) Service InterfaceUse ADF-BC Binding Adapter and BPEL EntityInvoke Java EJB over EJB BindingCall out using Direct Binding or Socket AdapterInteract using JMS Adapter

15. Accessing Java based logic exposed by EJBsCreate and deploy EJBGet (remote) Java Interface and JNDI nameCreate EJB Binding (reference)Configure with JNDI name and Java InterfaceCreate wire to the EJB BindingA WSDL is automatically derived from the Java interface definition

16. (outbound) EJB Binding

17. The WSDL is created upon wiring to the EJB binding

18. Run composite with call via outbound EJB binding

19. ADF BC providing Data Access service to BPEL processesSOA Suite communicates with database through Database AdapterSQL (select, DML), PL/SQL and pollingAlternatively, Service Data Objects and a Data Access Service can be usedXML and HTTP basedStateful dataset & two-way synchronization

20. ADF Faces Web ApplicationPatientAdministration(SDO) Web ServicePatientsServiceApplication ModulePatientsServiceSOA SuiteView ObjectPatientsVwEDNADF BusinessComponentsEntity ObjectPatientPATIENTS

21. ADF BC, SDO and BPELADF BC Application Module can be exposed as Service Interface that is SDO enabledThe SOA Suite ADF BC binding adapter connects to the SDO Service InterfaceBPEL Variables can be based on SDO EntityBPEL activity Create Entity does InsertBPEL activity Bind Entity does retrieveAssign in BPEL results in call to update on SDO

22. Expose ADF BC Service Interface

23. Test SDO enabled Service Interface

24. Using the ADF-BC Binding Adapter

25. Create SDO Entity based variable in BPEL process

26. BPEL activity Bind Entity does ‘select * into BPEL variable’

27. OverviewThree perspectivesJava2SOA, SOA2Java, SOA running Java insideInvoking SOA Composite Application from JavaWebService, EJB and ADF Binding; JMSCalling Java from SOA Composite applicationEJB binding, JMS Adapter Service; direct & socketJava exposed as WebService and as ADF-BC SDOJava insideBPEL Embedded Java; Mediator Java CalloutSpring Context Service Component

28. Run Java inside SOA CompositeExtend BPEL processes with Embedded JavaFor manipulation of variables, auditing/logging,external call-outs, validation,..Mediator Java CalloutBefore or after transformation ofrequest or replyFor validation, transformation & enrichment, logging, …Spring Context service component

30. Consult Preparation Service

31. Add translations using Google’s RESTful Translation ServiceJava Class StringTranslator publishes a static method translate that will translate strings:

32. Add embedded Java activity

34. Extend with Dutch translations

35. Extend with Dutch translations

36. Java Embedding in BPEL processHidden inside, not very decoupledHard to maintainMixing technology paradigms Requiring different skillsIn general:Useful for advanced logging/tracingUseful for special validations/transformationsUse with great caution

37. Mediator Java Call-outsMediators allow registration of a Java Callout classThis class extends from AbstractJavaCalloutImplMay override methods invoke at specific momentsin thelife cycle

38. Mediator Java Call-outsUsed for debugging & logging/auditing, advanced manipulation (enrichment?), complex validation

39. Java inside composites: Spring ComponentPrimary citizen in SCA Composite applicationsAs per the SCA SpecificationAs per 11gR1 PS2 (preview in PS1)POJOs configured as Spring Beans provide services inside the CompositeAnd potentially exposed externallySpring’s Dependency Injection is very similar to SCA’s Reference concept

40. Steps for adding Java logic to a composite applicationAdd Spring Context to the compositeA Spring Bean Configuration file is createdAdd bean definitions for POJOs based on Java InterfacesAdd sca:service elements to exposebeans as service to other componentsAdd sca:reference elements to get Service Components injected to satisfy a dependency

41. First Steps

42. Use Case: Add PDF generation to a composite applicationPDF Generating Spring Bean is defined in the Spring Content – with an sca:service

44. Dependency Injection: Spring Beans get Service Components injectedDependency injection is the heart and soul of SpringReferences in SCA are very similarSpring Beans can publish their dependencies as sca:reference elementsThat get exposed by the Spring ContextThese References can be satisfied by wiring in other Service ComponentsUsually Mediator

45. Second round

46. Third round

47. Injecting LogFileWriter & ConsoleLogger

48. 48Summary and ConclusionSOA Composite applications can expose and access EJB bindings next to WebServiceBPEL Entity variables have direct SDO bindingService Adapters for Direct Binding, Sockets and JMS interact with Java applicationsboth incoming and outgoing interactionSpring Context Service Component allows Spring Beans (POJOs) to be run inside SOASpring Bean can be invoked as service Spring Bean can have service component injected

49. ResourcesPresentation and demos are on our bloghttp://technology.amis.nl/blogContact me at:lucas.jellema@amis.nl