org.somox.metrics.ratio

Class Instability

java.lang.Object

org.somox.metrics.abstractmetrics.AbstractMetric

org.somox.metrics.abstractmetrics.AbstractComposedMetric

org.somox.metrics.ratio.Instability

All Implemented Interfaces:

IMetric

public class Instability
extends AbstractComposedMetric

Instability metric The ratio of efferent coupling (Ce) to total coupling. I = Ce / (Ce + Ca). This metric is an indicator of the package's resilience to change. The range for this metric is 0 to 1, with I=0 indicating a completely stable package and I=1 indicating a completely instable package. see http://www.ndepend.com/Metrics.aspx#Instability

Author:

Steffen Becker, Grischa Liebel

Field Summary

Fields

Modifier and Type	Field and Description
static MetricID	METRIC_ID

Constructor Summary

Constructors

Constructor and Description
Instability()

Method Summary

Methods

Modifier and Type	Method and Description
MetricID	getMID() Returns the Metric ID of the Metric
boolean	isCommutative()
boolean	isNormalised()

Methods inherited from class org.somox.metrics.abstractmetrics.AbstractComposedMetric

getAllChildMetrics, initialize

Methods inherited from class org.somox.metrics.abstractmetrics.AbstractMetric

computeDirected, getLaunchConfigurationTab, getMetricParameters

Methods inherited from class java.lang.Object

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

Field Detail

METRIC_ID

public static final MetricID METRIC_ID

Constructor Detail

Instability

public Instability()

Method Detail

isCommutative

public boolean isCommutative()

Specified by:

isCommutative in interface IMetric

Overrides:

isCommutative in class AbstractComposedMetric

Returns:

true if the metric gives the same result if firstComponent and secondComponent are swapped

getMID

public MetricID getMID()

Description copied from interface: IMetric

Returns the Metric ID of the Metric

Returns:

the metric id of the instance

isNormalised

public boolean isNormalised()

Returns:

whether the metric is normalized. If it is normalized, values of this metric must be between 0.0 and 1.0.