IfcEventTriggerTypeEnum

IfcEventTriggerTypeEnum定义了可以指定的不同类型事件触发器的范围。事件触发器类型的定义是从业务流程建模符号（BPMN）中采用的，该符号也用于定义业务流程的信息传递手册（IDM）。有关使用事件触发器类型的详细信息，请参见这些规范。
IFC4中增加的。

Constant	Description
EVENTRULE	An event trigger that is a rule or constraint.
EVENTMESSAGE	An event trigger that is a message or set of information.
EVENTTIME	An event trigger that is at, or occurs after, a particular point in or period of time.
EVENTCOMPLEX	An event trigger that is a complex combination of things.
USERDEFINED
NOTDEFINED

EXPRESS代码

TYPE IfcEventTriggerTypeEnum = ENUMERATION OF (
 EVENTRULE, 
 EVENTMESSAGE, 
 EVENTTIME, 
 EVENTCOMPLEX, 
 USERDEFINED, 
 NOTDEFINED);
END_TYPE;