Extending EGL with New Cool Web 2.0 Technologies课件.ppt

EGL: shielding complexity Consume Data + Logic UI Produce JavaScript AJAX Dojo Google REST XML SOAP JSON SOAP XML REST PHP COBOL Java RPG SQL EGL Widget Library IBM Widget Writer ISVs Business Developers Business Developers EGL Complexity Complexity Simplicity Doability Simplicity Simplicity Simplicity Complexity Complexity What are the key Elements of the EGL Rich UI Programming Model? With earlier versions of IBM Rational Business Developer, EGL source code can already be translated into Java and COBOL for deployment on System Z and I servers. The same EGL code allows easy access to databases and existing programs written in COBOL, Java, PL1, and RPG. That makes EGL a perfect language for doing enterprise modernization and successfully SOA-enabling legacy applications. In addition to COBOL and Java, EGL Rich UI now adds the ability to also generate JavaScript, that then runs in a web browser and that accesses logic on the server using Services calls. The resulting JavaScript allows for mashups of various data sources being integrated inside the browser by simple code written in EGL. Existing JavaScript libraries can also be easily exposed in EGL and used in compositions thereafter. The JavaScript that is generated from the EGL, and any dependent native JavaScript libraries can be deployed to various application servers, such as WebSphere Application Server and Apache Tomcat. However, EGL Rich UI runs just as well on lightweight stacks, such as the LAMP stacks that just rely on an Apache HTTP Server. EGL Rich UI applications run in the most prominent browsers, such as Internet Explorer, Firefox, and Safari. The latter one is especially interesting to many people, as it is the browser that is included with the iPhone. When used end to end, EGL can be used as a very productive technology to modernize user interfaces and leverage existing investments in software and hardware, but also in people skills. How does EGL integrate with other Technologies like Flex,