/// <summary>
/// Updates the state machine to reflect the successful processing of a method.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="causeId">The cause id.</param>
/// <returns></returns>
public void CauseProcessingCompleted(ISystemContext context, uint causeId)
{
// get the transition.
uint transitionId = GetTransitionForCause(context, causeId);
if (transitionId == 0)
{
return;
}
// get the new state.
uint newState = GetNewStateForTransition(context, transitionId);
if (newState == 0)
{
return;
}
// save the last state.
if (m_lastState == null)
{
m_lastState = new FiniteStateVariableState(this);
}
m_lastState.SetChildValue(context, null, CurrentState, false);
// update state and transition variables.
UpdateStateVariable(context, newState, CurrentState);
UpdateTransitionVariable(context, transitionId, LastTransition);
}
/// <summary>
/// Updates the current state variable.
/// </summary>
protected void UpdateStateVariable(ISystemContext context, uint stateId, FiniteStateVariableState variable)
{
if (variable == null)
{
return;
}
if (stateId == 0)
{
variable.Value = null;
variable.Id.Value = null;
if (variable.Number != null)
{
variable.Number.Value = 0;
}
return;
}
ElementInfo[] stateTable = StateTable;
if (stateTable == null)
{
return;
}
for (int ii = 0; ii < stateTable.Length; ii++)
{
ElementInfo state = stateTable[ii];
if (state.Id == stateId)
{
variable.Value = state.Name;
variable.Id.Value = new NodeId(state.Id, ElementNamespaceIndex);
if (variable.Number != null)
{
variable.Number.Value = state.Number;
}
return;
}
}
}
/// <summary>
/// Causes the specified transition to occur.
/// </summary>
public ServiceResult DoTransition(
ISystemContext context,
uint transitionId,
uint causeId,
IList <object> inputArguments,
IList <object> outputArguments)
{
// check for valid transition.
uint newState = GetNewStateForTransition(context, transitionId);
if (newState == 0)
{
return(StatusCodes.BadNotSupported);
}
// check the cause permissions.
if (causeId != 0)
{
if (!IsCausePermitted(context, causeId, true))
{
return(StatusCodes.BadUserAccessDenied);
}
}
// do any pre-transition processing.
ServiceResult result = InvokeCallback(
OnBeforeTransition,
context,
this,
transitionId,
causeId,
inputArguments,
outputArguments);
if (ServiceResult.IsBad(result))
{
return(result);
}
// save the last state.
if (m_lastState == null)
{
m_lastState = new FiniteStateVariableState(this);
}
m_lastState.SetChildValue(context, null, CurrentState, false);
// update state and transition variables.
UpdateStateVariable(context, newState, CurrentState);
UpdateTransitionVariable(context, transitionId, LastTransition);
// do any post-transition processing.
InvokeCallback(
OnAfterTransition,
context,
this,
transitionId,
causeId,
inputArguments,
outputArguments);
// report the event.
if (this.AreEventsMonitored && !m_suppressTransitionEvents)
{
TransitionEventState e = CreateTransitionEvent(context, transitionId, causeId);
if (e != null)
{
UpdateTransitionEvent(context, transitionId, causeId, e);
ReportEvent(context, e);
}
}
return(ServiceResult.Good);
}
/// <summary>
/// Causes the specified transition to occur.
/// </summary>
public ServiceResult DoTransition(
ISystemContext context,
uint transitionId,
uint causeId,
IList<object> inputArguments,
IList<object> outputArguments)
{
// check for valid transition.
uint newState = GetNewStateForTransition(context, transitionId);
if (newState == 0)
{
return StatusCodes.BadNotSupported;
}
// check the cause permissions.
if (causeId != 0)
{
if (!IsCausePermitted(context, causeId, true))
{
return StatusCodes.BadUserAccessDenied;
}
}
// do any pre-transition processing.
ServiceResult result = InvokeCallback(
OnBeforeTransition,
context,
this,
transitionId,
causeId,
inputArguments,
outputArguments);
if (ServiceResult.IsBad(result))
{
return result;
}
// save the last state.
if (m_lastState == null)
{
m_lastState = new FiniteStateVariableState(this);
}
m_lastState.SetChildValue(context, null, CurrentState, false);
// update state and transition variables.
UpdateStateVariable(context, newState, CurrentState);
UpdateTransitionVariable(context, transitionId, LastTransition);
// do any post-transition processing.
InvokeCallback(
OnAfterTransition,
context,
this,
transitionId,
causeId,
inputArguments,
outputArguments);
// report the event.
if (this.AreEventsMonitored && !m_suppressTransitionEvents)
{
TransitionEventState e = CreateTransitionEvent(context, transitionId, causeId);
if (e != null)
{
UpdateTransitionEvent(context, transitionId, causeId, e);
ReportEvent(context, e);
}
}
return ServiceResult.Good;
}
/// <summary>
/// Updates the state machine to reflect the successful processing of a method.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="causeId">The cause id.</param>
/// <returns></returns>
public void CauseProcessingCompleted(ISystemContext context, uint causeId)
{
// get the transition.
uint transitionId = GetTransitionForCause(context, causeId);
if (transitionId == 0)
{
return;
}
// get the new state.
uint newState = GetNewStateForTransition(context, transitionId);
if (newState == 0)
{
return;
}
// save the last state.
if (m_lastState == null)
{
m_lastState = new FiniteStateVariableState(this);
}
m_lastState.SetChildValue(context, null, CurrentState, false);
// update state and transition variables.
UpdateStateVariable(context, newState, CurrentState);
UpdateTransitionVariable(context, transitionId, LastTransition);
}
/// <summary>
/// Updates the current state variable.
/// </summary>
protected void UpdateStateVariable(ISystemContext context, uint stateId, FiniteStateVariableState variable)
{
if (variable == null)
{
return;
}
if (stateId == 0)
{
variable.Value = null;
variable.Id.Value = null;
if (variable.Number != null)
{
variable.Number.Value = 0;
}
return;
}
ElementInfo[] stateTable = StateTable;
if (stateTable == null)
{
return;
}
for (int ii = 0; ii < stateTable.Length; ii++)
{
ElementInfo state = stateTable[ii];
if (state.Id == stateId)
{
variable.Value = state.Name;
variable.Id.Value = new NodeId(state.Id, ElementNamespaceIndex);
if (variable.Number != null)
{
variable.Number.Value = state.Number;
}
return;
}
}
}
