Understanding How Actions Execute

After the framework evaluates conditions for all a trigger point's policies, the actions associated with the policies having true conditions are forwarded to the action framework. The action framework is responsible for firing the actions.

Only one terminal action can be fired for any trigger point. Because a trigger point may be associated with one or more policies, and each policy may include more than one action, more than one terminal action might be associated with a trigger point. In this case, the first terminal action in the first policy that evaluates to true is executed. If present, a terminal action fires after executing all the nonterminal actions.

Individual action types determine how actions can be combined. Some action types, such as the display alert, combine all their actions from the same trigger point. Therefore, at runtime all the display items appear in the same pop-up window.

An action that is not combinable will not affect the execution of another action.