Sun Microsystems iPlanet Integration Server 3.0, Руководство по системе управления

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Process Execution
172 iPlanet Integration Server • Process System Guide • August 2001
Completed Activities
When an engine places an activity in a COMPLETED state, the engine performs the
following actions:
• executes the activity’s OnComplete method, if one is specified in the process
definition
• executes the activity’s OnComplete router methods
• checks for a process stall condition—when no other activities are in an ACTIVE
or READY state (that is, all are either COMPLETED or PENDING) and no
timers are active—and aborts the process instance if a stall condition is
detected
• deletes the COMPLETED activity from state information
In the case of a Last activity, however, instead of performing the above actions, the
engine places the process directly in a COMPLETED state.
Aborted Activities
When an engine places an activity in an ABORTED state, the engine performs the
following actions:
• executes the activity’s OnAbort method, if one is specified in the process
definition
• executes the activity’s OnAbort router methods—if none are specified, the
engine will, by default, abort the process instance
• checks for a process stall condition (no other activities are in an ACTIVE or
READY state—that is, all are either COMPLETED or PENDING—and no
timers are active) and aborts the process instance if a stall condition is detected
• deletes the ABORTED activity from state information
In the case of First and Last activities, however, the activities cannot reach an
ABORTED state, since they proceed directly to a COMPLETED state.