Package edu.tufts.hrilab.action.execution.control

Class TryContext

java.lang.Object

edu.tufts.hrilab.action.execution.Context

edu.tufts.hrilab.action.execution.control.TryContext

public class TryContext
extends Context

This represents the semantics of the TRY control in an action script.

Field Summary

Fields inherited from class edu.tufts.hrilab.action.execution.Context

caller, childContexts, cmd, constraints, endTime, log, maxTime, startTime, stateMachine

Constructor Summary

Constructors

Constructor	Description
TryContext(Context c, StateMachine sm, ScriptParser parser)	Constructor.

Method Summary

Modifier and Type	Method	Description
TryContext	copy(Context newParent)	deep copy of the context, its status, and its children
void	resetConcreteContext()	This resets fields specific to concrete sub-classes and should be overridden by inheriting classes if additional resetting needs to happen.
void	setStatus(ActionStatus eStatus, Justification justification)	Exit the current event.
protected void	setupNextStep()	If Context can have next steps (i.e., children), implement this method to add the next child context that should be executed.

Methods inherited from class edu.tufts.hrilab.action.execution.Context

acquireLocks, addEvent, addEvent, addEvent, causedFailure, copyInternal, createSimulatedEquivalent, doStep, getActor, getActualLogicalValue, getArgument, getArguments, getArgumentSilent, getArgumentType, getArgumentValue, getChildContexts, getCommand, getConstraints, getContextDescription, getContextDescription, getDuration, getElapsedTime, getEndTime, getEquivalentContext, getEvaluatedArgument, getExecType, getId, getJustification, getLocalArgument, getLogicalValue, getMaxTime, getNearestTerminatedAncestor, getNextStep, getNextStepForType, getParentContext, getRootContext, getSignatureInPredicateForm, getStartTime, getStateMachine, getStateUpdates, getStatus, hasNormCheckingAncestor, isAction, isApproved, isAsynchronous, isFailure, isSimulation, isSuccess, isTerminated, performAdditionalStatusUpdates, releaseLocks, resetContext, resetCoreContext, setChildContexts, setConstraints, setEndTime, setExecType, setLogicalValue, setStartTime, setStartTime, setStateMachine, setStatus, setTimeout, setupNextStep, startOverAllMonitor, toString, updatePerformanceModels, verifyEffects, verifyReturnValue, waitForTermination, waitForTermination

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

TryContext

public TryContext(Context c,
 StateMachine sm,
 ScriptParser parser)

Constructor.

Parameters:

c -

Method Details

resetConcreteContext

public void resetConcreteContext()

Description copied from class: Context

This resets fields specific to concrete sub-classes and should be overridden by inheriting classes if additional resetting needs to happen.

Overrides:

resetConcreteContext in class Context

setStatus

public void setStatus(ActionStatus eStatus,
 Justification justification)

Exit the current event. Note that this is always called from the child event, setting its execution status before it returns.

Special handling of error in try context: do not transmit error to parent context, instead handle the error within the context by jumping to the catch block. If an exit happens in the catch block, resume standard behavior by transmitting error to parent context.

Overrides:

setStatus in class Context

Parameters:

eStatus - the execution status of the currently running event

setupNextStep

protected void setupNextStep()

Description copied from class: Context

If Context can have next steps (i.e., children), implement this method to add the next child context that should be executed.

Overrides:

setupNextStep in class Context

copy

public TryContext copy(Context newParent)

Description copied from class: Context

deep copy of the context, its status, and its children

Specified by:

copy in class Context

Parameters:

newParent - parent to attach the copied context too

Returns:

the copied context