Databases Reference
In-Depth Information
All the services are executed within the context of the Java EE container, even though
they may use that container in different ways. BPEL listens for events and updates
processes based upon those events. Adapters typically make use of the Java EE
containers connector architecture (JCA) to provide connectivity and notifications.
Policy interceptors act as filters. Note that the Oracle Service Bus (OSB) is only
available when the application server is a WebLogic server.
Implementation view
Oracle has put a lot of effort into making SOA Suite consistent in its use of underlying
services. A number of lower-level services are reused consistently across components.
A
Portability Layer
provides an interface between the SOA Suite and the specifics of
the JEE platform that hosts it.
At the lowest level, connectivity services, such as SCA, JCA adapters, JMS, and Web
Service Framework, are shared by higher-level components.
A
Service Layer
exposes higher-level functions. The BPEL process manager is
implemented by a combination of a BPEL engine and access to the Human
Workflow engine.
Rules
is another shared service that is available to BPEL
or other components.
