The EJB APIs provide a set of generic methods for developing
EJB client applications for working with the BPEL processes and human
tasks that are installed on a Workflow Server.
About this task
With these Enterprise JavaBeans (EJB)
APIs, you can create client applications to perform the following
actions:
- Manage the lifecycle of processes and tasks from starting them
through to deleting them when they complete
- Repair activities and processes
- Manage and distribute the workload over members of a work group
The EJB APIs are provided as two stateless session enterprise
beans:
- BusinessFlowManagerService interface provides the methods for
BPEL process applications
- HumanTaskManagerService interface provides the methods for task-based
applications
For more information on the EJB APIs, see the Javadoc in the com.ibm.bpe.api package and the com.ibm.task.api package.
The
following steps provide an overview of the actions you need to take
to develop an EJB client application.
Procedure
- Decide on the functionality that the application is to
provide.
- Decide which of the session beans that you are going to
use.
Depending on the scenarios that you want to implement
with your application, you can use one, or both, of the session beans.
- Determine the authorization authorities needed by users
of the application.
The users of your application must
be assigned the appropriate authorization roles to call the methods
that you include in your application, and to view the objects and
the attributes of these objects that these methods return. When an
instance of the appropriate session bean is created, WebSphere® Application
Server associates
a context with the instance. The context contains information about
the caller's principal ID, group membership list, and roles. This
information is used to check the caller's authorization for each call.
The Javadoc contains authorization information for each of the methods.
- Decide how to render the application.
The
EJB APIs can be called locally or remotely.
- Develop the application.
- Access the EJB API.
- Use the EJB API to interact with processes or tasks.
- Query the data.
- Work with the data.
