org.activiti.engine.impl.jobexecutor
接口 
FailedJobCommandFactory
JobHandler
RejectedJobsHandler
 
AcquiredJobs
AcquireJobsRunnable
AsyncContinuationJobHandler
CallerRunsRejectedJobsHandler
DefaultFailedJobCommandFactory
DefaultJobExecutor
ExclusiveJobAddedNotification
ExecuteJobsRunnable
FailedJobListener
GetUnlockedTimersByDuedateCmd
JobExecutor
JobExecutorContext
MessageAddedNotification
ProcessEventJobHandler
TimerActivateProcessDefinitionHandler
TimerCatchIntermediateEventJobHandler
TimerChangeProcessDefinitionSuspensionStateJobHandler
TimerDeclarationImpl
TimerExecuteNestedActivityJobHandler
TimerStartEventJobHandler
TimerSuspendProcessDefinitionHandler
枚举 
TimerDeclarationType