Teamcenter - What are Handlers?

Handlers

Small ITK programs or functions. Handlers are the lowest-level building blocks in EPM. You use handlers to extend and customize tasks. 

The following is a list of the types of functions you can add to a task: 

• Set protections
• Assign reviewers
• Demote a task
• Perform a signoff
• Change a status

There are two kinds of handlers:

Action handlers

Extend and customize task actions. Action handlers perform such actions as displaying information, retrieving the results of previous tasks (inherit), notifying users, setting object protections and launching applications.

Rule handlers

Integrate workflow business rules into EPM workflow processes at the task level. Rule handlers attach conditions to an action. Many conditions defined by a rule handler are binary (that is, they are either true or false). However, some conditions are neither true nor false. EPM allows two or more rule handlers to be combined using logical AND/OR conditions. When several rule handlers are combined using a logical OR condition, rule handler quorums specify the number of rule handlers that must return go for the action to complete.