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Web Services Development made easy

Web Services Development made easy. Olivier Le Diouris Principal Product Manager. Agenda. The Scope Database as a Service Provider Database as a Service Consumer Future. Agenda. The Scope Database as a Service Provider Database as a Service Consumer Future. The Scope.

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Web Services Development made easy

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  1. Web Services Development made easy

  2. Olivier Le Diouris Principal Product Manager

  3. Agenda • The Scope • Database as a Service Provider • Database as a Service Consumer • Future

  4. Agenda • The Scope • Database as a Service Provider • Database as a Service Consumer • Future

  5. The Scope • Web Services Technology Stack • SOAP • WSDL • UDDI • SOAP Architecture : Services & Service Providers • JSR-109 : J2EE Web Services • Benefits of J2EE Web Services Internet

  6. WSDL SOAP UDDI Web Services Technology Stack • Uses the Internet, firewall friendly • Language & Platform agnostic • Good interoperability, NO portability • Uses XML messaging • Stateless Fortran Java Perl APL C, C++ PL/SQL VisualBasic C# SPL Cobol Pascal ADA

  7. Java, Perl, Shell Script, PL/SQL, VB, … A SOAP Provider Greetings, Stock Quotes, Directions, Currency Rates, Traffic, … A SOAP Service SOAP Services and Providers A SOAP Request

  8. JAX-R JCA JAX-RPC J2SE QuickBasic …more! JMS J2ME Java Smalltalk JSP JDBC Fortran JAX-M C# Perl war-files JAX-B C, C++ PL/SQL Servlet Java Visual Basic ear-files SPL Cobol EJB APL Pascal JAX-P ADA Prolog Web Services & J2EE JSR 109

  9. JSR 109 • How to deploy a Java Web Service the J2EE way • Java Class(es) • Java Interface • WSDL document • Bundled as a J2EE ear-file • Brings portability to a Web Services application OC4J

  10. D E M O N S T R A T I O N A J2EE Web Service and its Proxy

  11. Agenda • The Scope • Database as a Service Provider • Database as a Service Consumer • Future

  12. Database as a Service Provider • Already existing logic or data-centric process running in the Database • To be published as a J2EE Web Service (JSR 109) • Use JPublisher to generate the java wrapper

  13. Rationale • Use Oracle JPublisher to generate a Java wrapper • Publish the Java Wrapper as a JSR-109 compliant Web Service • Will take advantage of the J2EE container’s data-sources and connection pooling mechanism

  14. Oracle JPublisher • Available since Oracle 8 • Can manage unsupported types • Today, uses SQLJ • Available from the command line, as wellas from IDE Wizards

  15. D E M O N S T R A T I O N Exposing PL/SQL as a Web Service

  16. Agenda • The Scope • Database as a Service Provider • Database as a Service Consumer • Future

  17. Database as a Service Consumer • Web Services access from the Database • Immediately available for any application accessing the Database (SQL Statement, Oracle PL/SQL, Oracle Forms, etc) • Use the appropriate features wherever they run Web Services Internet

  18. Rationale • Generate a java stub or proxy for any Web Service, after the associated WSDL • Publish this stub or proxy as a Java Stored Procedure • Result: It’s another PL/SQL executable Web Services Internet

  19. Requirements • Store the libraries required by the SOAP client in the Database (use loadjava) • Grant the appropriate privileges to access external resources Web Services Internet

  20. D E M O N S T R A T I O N Consuming a Web Service from the Database

  21. Agenda • The Scope • Database as a Service Provider • Database as a Service Consumer • Future

  22. What’s coming • SQL Query and DML • Additional Returned Data Formats • Direct Java-to-Java invocation • AQ /Streams operations • XML Operations • Asynchronous/Deferred Service execution • JAX-RPC Client SOAP stack • Automatic Table Function Generation • Enhanced Tooling • Command line • JDeveloper

  23. otn.oracle.com Join Over 3,000,000 Developers! Free Technical Advice Free Software Downloads http://otn.oracle.com

  24. For more information • TheServerSide.com J2EE Community • Largest J2EE site in the world • 305,000 registered members • Enterprise Java News • Design Patterns • Free Books • Product Reviews • Articles and Video Interviews

  25. Q & Q U E S T I O N S A N S W E R S A

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