In Camunda, events refer to some specific events that occur during process execution, such as task assignment, task completion, process start, process end, and so on. Camunda provides several types of events that help you perform various actions during process execution.
Here are some basic uses of Camunda events:
1. Start Event: Indicates the start of the process. This event is fired when the process starts. You can use the Start Event to define initial values for process variables, automatically assign tasks, initialize process context, and more.
2. End Event: Indicates the end of the process. This event is fired when the process completes successfully or terminates abnormally. You can use End Events to record when a process ends, generate process reports, notify relevant personnel, and more.
3. Boundary Event: It is associated with a specific task and can be triggered during the execution of a specific task. For example, when a task times out, a boundary event can be fired and some action performed automatically.
4. Intermediate Catch Event (intermediate capture event): Capture specific events during process execution and trigger certain operations. For example, when a task is completed, an intermediate capture event can be triggered and automatically assign the task to the next handler.
5. Intermediate Throw Event: Trigger specific events during process execution and trigger certain operations. For example, when a certain task is completed, an intermediate throw event can be triggered and the relevant personnel will be automatically notified.
Using Camunda's events, you can easily create automated business processes and perform various actions based on different events. Camunda also supports custom events, you can write your own event listeners to handle specific events.