About Registration
What Does Registration Do?
The entity actually registered when you register a process definition, assignment rule, user profile, or user validation is a library. (Aliases are not libraries and this section does not apply to
A library (often referred to as a shared library) is code that can be loaded into memory at runtime, and then referenced by any number of executing programs. A library distribution is the set of distribution files used to install one or more libraries on any particular node.
In the case of iIS engine registration, library distributions are installed on the nodes hosting iIS engine units so the libraries can be dynamically loaded and executed by the engine unit or units running on the node.
iIS library distributions are generated automatically when a developer selects the File > Distribute command in the Process Definition, Assignment Rule, User Profile, and Validation workshops. Code in the central development repository is extracted and made into library distribution files, which are then placed in a standard location on the central server node.
NOTE You can also generate library distributions using the MakeConductorDistribution Conductor Script command, if you have access to the central repository where development code resides. (iIS Console does not provide this capability.)
A special registration service (WFEnvAgent) running on the central server node keeps track of the iIS library distributions (process definitions, assignment rule dictionaries, user profiles, and validations) that have been made from the process development workshops or Conductor Script. Whenever an iIS library distribution is made, its compatibility level is augmented to distinguish it from any previously generated distributions.
After a library distribution has been made and it is located on the central server node, you, as a system manager, can use the iIS Console or Conductor Script to register the library with any number of engines. (iIS process developers can also register iIS library distributions for test purposes using a Register option of the File > Distribute command in the process development workshops.)
Registration consists of two steps, illustrated in Figure
Chapter 5 Managing Registrations 139
