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SIG Event

RESTful service based on ADF Business Components, publishing enterprise database contents the REST way

4 years ago
by Lucas Jellema in , , , , , ,

After three introductory and exploratory articles on RestLet, RESTful Services and the creation of the latter using the former in JDeveloper 11g as well as hooking it up with ADF, it is now time to create a more serious RESTful service. A service that exposes resources from an enterprise business service. One backed by a enterprise database. One that RESTfully provides access to the Human Resource data. In other words: we will publish RESTful services for DEPT and EMP in the SCOTT schema.

It really is simple. The steps are:

  • create default ADF BC business objects for the DEPT and EMP tables; this implicitly publishes a Data Control that exposes the data collections
  •  create a new JSF page; drag the EMP table to this page and drop it as master-detail (table-table); this implicitly creates a PageDefinition that fuels the BindingContainer we need for our services
  • create and configure a servlet filter that will take care of initializing the BindingContainer on every request
  • create Resource classes for Depts, Dept, Emps and Emp; these classes get the appropriate data binding from the BindingContainer, set the current row for Dept (all resources except Depts) and Emp (only for the Emp More >
SIG Event

The rise of the ViewObject – or: isn't the ViewObject the real Data Control?

4 years ago
by Lucas Jellema in , ,

 

The ADF Model is positioned to decouple the Application from the implementation details of the Business Service(s) it uses. Any Business Service, be it an EJB, a POJO based JPA implementation, a WebService, a plain URL service (RESTful or otherwise), a Content Management API or an ADF Business Components Application Module, can be published as a Data Control through the ADF Model and from there be used in Data Bindings. The application deals with Data Bindings, the ADF Model layer interfaces with all different business service technologies. Sounds good. However: some business service technologies are more equal than others. Or to be more exact: one is more equal than others. ADF Business Components enjoys far more privileges in the ADF Model layer than the other persistence and implementation technologies do. (more…)

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