Sun Microsystems 3 manual IIS Process System Components

iIS Process System Components

The iPlanet UDS installation program creates an iPlanet UDS directory structure and source files on your target node, sets a number of environment variables used by iPlanet UDS at startup time, and creates startup scripts for starting the appropriate system management service—the Environment Manager or Node Manager—for your target node.

Setting up an iIS process system, in turn, depends upon the iPlanet UDS system management services provided in an iPlanet UDS environment.

iIS Process System Components

An iIS process system consists of both development and runtime components, as illustrated in Figure 2-1, and described in the iIS Process Development Guide.

The system includes one or more iIS process engines, which are accessed by a number of iIS process client applications. An engine controls and manages the flow of business processes, coordinating the work of the different client applications that perform the activities that make up these processes. The client applications perform activities directly or by invoking other application services in a distributed application.

An iIS process engine executes process definitions created by developers using a set of graphically-based process development workshops. These workshops store information in a central development repository. When development of a process definition is complete, the process definition is dynamically registered with an engine, which can then execute the process on behalf of a number of applications. These applications can be client applications that directly call the engine, or applications that are integrated using the iIS backbone.

Chapter 2 Setting Up an iIS Process Management System 45