Designing processes - EMC Community Network

Designing the Process
The transition conditions are expressed as:
The use of Join in the first two conditions ensures that each option leads to two activities being
selected. The trigger option at the Join activity looks like this:
Using sub-processes
Process Builder enables you to create in-line sub-processes. Using sub-processes can improve your
ability to communicate the structure and the business meaning of a process template. A large or
complicated process can become difficult to organize visually when there are many activities required
to complete an entire workflow. To simplify the layout of a process, group related activities into
sub-processes that collectively represent a business process.
In Process Builder, sub-processes can be expanded to view the individual activities or collapsed to
create a more simplified overview of a process. The process contains activities that are related in some
way and are grouped into a container for ease of administration. This can be useful when grouping a
set of activities that collectively represents a business function or a logical step in a process. Activities
that share the same process data can also be grouped into a sub-process.
It is also possible for one process to invoke another process. In this case the invoking process is called
the parent and the invoked process is called the child. If you want to build a process that invokes one
or more child processes, use the Invoke Process activity template. If you need the child process to post
events to the parent process, then use the Post Event to Parent Process.
Understanding message correlation
The basic idea of correlation is simple. Processes can send messages and receive messages from
external systems and services. A process instance can, for example, send a Java Message Service
(JMS) message (request) to an external system. This message is sent to the external system by the
Process Integrator. After sending the request message, the process instance enters a wait state. When
the external system completes the request, it sends its response message back to the Process Integrator.
However, there can be many process instances in flight at the same time, each waiting for a response
to its own request. Therefore, it is necessary to match the response to the correct requesting process
36 EMC Documentum xCelerated Composition Platform Version 1.6 Best Practices Guide