RtjAocsFramework.ObjectMonitoring
Class DeltaChange

java.lang.Object
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  +--RtjAocsFramework.BasicObjects.RootObject
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        +--RtjAocsFramework.BasicObjects.AocsObject
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              +--RtjAocsFramework.ObjectMonitoring.ChangeObject
                    |
                    +--RtjAocsFramework.ObjectMonitoring.DeltaChange

All Implemented Interfaces:

Configurable, Resettable, Telemeterable

public class DeltaChange

extends ChangeObject

Check that a variable does not change value across successive checks by more than a pre-specified delta threshold. The delta threshold is the reference value of the change object. The first time the change object is activated after creation or after a reset.

Copyright: see the Copyright Notice.

Version:

1.0

Author:

Alessandro Pasetti (University of Konstanz)

See Also:

The Object Monitoring Document.

Field Summary

Fields inherited from class RtjAocsFramework.ObjectMonitoring.ChangeObject

referenceValue

Fields inherited from interface RtjAocsFramework.TelemetryManagement.Telemeterable

DEBUG_TM, LONG_TM, NORMAL_TM, NTMFORMATS, SHORT_TM

Constructor Summary

DeltaChange()
Default constructor: the delta threshold is set to 1.

DeltaChange(double deltaThreshold)

Method Summary

boolean	checkValue(double value) Returns true if the value is different from the previous value that was passed through the change object filter.
int	getTelemetryImageLength() Return the length (in bits) of the telemetry image of the object.
void	reset() Bring the resettable state of the object to its initial default value.
void	writeToTelemetry(TelemetryStream tmStream) Direct the object to write its own state to the telemetry stream.

Methods inherited from class RtjAocsFramework.ObjectMonitoring.ChangeObject

getReferenceValue, setReferenceValue

Methods inherited from class RtjAocsFramework.BasicObjects.AocsObject

addConfigurationListener, addFailureListener, finalize, getAocsClock, getConfigurationListenerList, getCycle, getDestructionRecoveryAction, getFailureListenerList, getSystemManager, getTelemetryFormat, getTime, isConfigured, removeConfigurationListener, removeFailureListener, reportConfigurationEvent, reportFailure, resetConfiguration, resetStaticConfiguration, setAocsClock, setDestructionRecoveryAction, setMaxNumberOfConfigurationListeners, setMaxNumberOfFailureListeners, setSystemManager, setTelemetryFormat

Methods inherited from class RtjAocsFramework.BasicObjects.RootObject

getClassId, getInstanceId, setClassId

Methods inherited from class java.lang.Object

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

Constructor Detail

DeltaChange

public DeltaChange(double deltaThreshold)

DeltaChange

public DeltaChange()

Default constructor: the delta threshold is set to 1.

Method Detail

reset

public void reset()

Description copied from interface: Resettable

Bring the resettable state of the object to its initial default value. A call to method reset on an object A is sometimes propagated to objects that are logically contained in A (relationship of strong aggregation).

Specified by:

reset in interface Resettable

Overrides:

reset in class AocsObject

checkValue

public boolean checkValue(double value)

Returns true if the value is different from the previous value that was passed through the change object filter. The reference value is equal to the value passed through the change object filter.

Specified by:

checkValue in class ChangeObject

writeToTelemetry

public void writeToTelemetry(TelemetryStream tmStream)

Description copied from interface: Telemeterable

Direct the object to write its own state to the telemetry stream.

Specified by:

writeToTelemetry in interface Telemeterable

Overrides:

writeToTelemetry in class AocsObject

getTelemetryImageLength

public int getTelemetryImageLength()

Description copied from interface: Telemeterable

Return the length (in bits) of the telemetry image of the object. This method is useful to verify that the quantity of data generated by a given object is compatible with the capacity of the telemetry channel.

Specified by:

getTelemetryImageLength in interface Telemeterable

Overrides:

getTelemetryImageLength in class AocsObject