Building RESTful Java Applications with EMF

Kenn Hussey, Marcelo Paternostro (Oracle)

Frameworks - Modeling · Tutorial - 4 hours  slideshare
Monday, 08:00, 4 hours | Grand Ballroom D


Representational State Transfer (REST) is a style of software architecture for distributed hypermedia systems such as the World Wide Web. However, it is possible to design any enterprise software system in accordance with the REST architectural style without using the HTTP protocol and without interacting with the World Wide Web. Systems that follow the principles of REST often referred to as RESTful. Proponents of REST argue that the Web enjoyed the scalability and growth that it has had as a direct result of a few key design principles. Among these principles are the notions that application state and functionality are divided into resources and that every resource is uniquely addressable using a universal syntax for use in hypermedia links. Another key principle of REST is that all resources share a uniform interface for the transfer of state between client and resource, consisting of a constrained set of content types and a constrained set of well-defined operations. The Eclipse Modeling Framework (EMF) provides a Java runtime framework and tools for generative application development and fine-grained data integration based on simple models. Models can be specified directly using EMF's metamodel, Ecore, or imported from other forms, including UML and XML Schema. Given a model specification, EMF can generate a corresponding set of Java interfaces and implementation classes that can easily be mixed with hand-written code for maximum flexibility. When deployed, applications developed with EMF benefit from a powerful and extensible runtime, which, among other features, includes a persistence mechanism which has always supported the principles of REST – perhaps even before the term "REST" became popular. This tutorial will provide an introduction to EMF, including alternatives for specifying a model, EMF's code generation tools, and key runtime framework concepts. As a practical usage of this knowledge, the presenters will show how EMF can be used to build RESTful applications, exploring some best practices for working with resources and other features of the framework.
Kenn Hussey is a program manager for Embarcadero Technologies. He is a member of the Project Management Committee (PMC) for the Modeling project, lead of the Model Development Tools (MDT) sub-project, and a committer on the Eclipse Modeling Framework (EMF) sub-project at Eclipse. He is also actively involved with the Object Management Group (OMG), representing Embarcadero on the Business Process Modeling Notation (BPMN), Unified Modeling Language (UML), and Meta-Object Facility (MOF) / XML Metadata Interchange (XMI) revision task forces, as well as the Information Management Metamodel (IMM) submission team. Prior to joining Embarcadero, Kenn was a senior software developer for IBM Rational Software and a senior designer / team leader for Nortel Networks. He holds a master’s degree and a bachelor’s degree in Computer Science from Acadia University. Kenn’s blog can be accessed at

Marcelo is a software engineer for IBM Rational Software at the Toronto Lab. He has worked with Eclipse technologies since joining the company in 2000. Since 2004, he has been an active committer on the EMF project, being the EMF core component leader. More recently, he became an E4 committer and has been working with the UI team on the new implementation of the UI components. Besides his commitments to open-source, Marcelo is an architect for the IBM Rational AppScan Developer and Build Editions offerings. These products use Eclipse technologies to enable addressing web-security concerns on early phases of the development cycle.


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