Metric Results

[ summary ] [ packages ] [ cycles ] [ explanations ]

The following document contains the results of a JDepend metric analysis. The various metrics are defined at the bottom of this document.

Summary

[ summary ] [ packages ] [ cycles ] [ explanations ]

Package TC CC AC Ca Ce A I D V
org.chabala.brick.controllab 24 18 6 1 12 25.0% 92.0% 17.0% 1
org.chabala.brick.controllab.sensor 12 8 4 1 5 33.0% 83.0% 17.0% 1

Packages

[ summary ] [ packages ] [ cycles ] [ explanations ]

org.chabala.brick.controllab

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 12 25.0% 92.0% 17.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.chabala.brick.controllab.ByteConsumer
org.chabala.brick.controllab.ControlLab
org.chabala.brick.controllab.SerialPort
org.chabala.brick.controllab.SerialPortEventListener
org.chabala.brick.controllab.SerialPortFactory
org.chabala.brick.controllab.StopButtonListener
 org.chabala.brick.controllab.ControlLabImpl
org.chabala.brick.controllab.Direction
org.chabala.brick.controllab.Input
org.chabala.brick.controllab.InputId
org.chabala.brick.controllab.InputManager
org.chabala.brick.controllab.InputType
org.chabala.brick.controllab.JsscSerialPort
org.chabala.brick.controllab.JsscSerialPortFactory
org.chabala.brick.controllab.KeepAliveMonitor
org.chabala.brick.controllab.KeepAliveMonitor$NamedDaemonThreadFactory
org.chabala.brick.controllab.Output
org.chabala.brick.controllab.OutputId
org.chabala.brick.controllab.PowerLevel
org.chabala.brick.controllab.Protocol
org.chabala.brick.controllab.SerialListener
org.chabala.brick.controllab.SerialPortWriter
org.chabala.brick.controllab.StopButton
org.chabala.brick.controllab.StopButtonEvent
 org.chabala.brick.controllab.sensor
 java.io
java.lang
java.lang.invoke
java.nio.charset
java.time
java.util
java.util.concurrent
java.util.function
java.util.stream
jssc
org.chabala.brick.controllab.sensor
org.slf4j

org.chabala.brick.controllab.sensor

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 5 33.0% 83.0% 17.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.chabala.brick.controllab.sensor.LightSensorListener
org.chabala.brick.controllab.sensor.SensorListener
org.chabala.brick.controllab.sensor.SensorValue
org.chabala.brick.controllab.sensor.TouchSensorListener
 org.chabala.brick.controllab.sensor.BinaryStringFormatter
org.chabala.brick.controllab.sensor.LightSensor
org.chabala.brick.controllab.sensor.LightSensorEvent
org.chabala.brick.controllab.sensor.SensorEvent
org.chabala.brick.controllab.sensor.SensorValueImpl
org.chabala.brick.controllab.sensor.TemperatureSensor
org.chabala.brick.controllab.sensor.TouchSensor
org.chabala.brick.controllab.sensor.TouchSensorEvent
 org.chabala.brick.controllab
 java.lang
java.lang.invoke
java.util
java.util.function
org.chabala.brick.controllab

Cycles

[ summary ] [ packages ] [ cycles ] [ explanations ]

Package Package Dependencies
org.chabala.brick.controllab org.chabala.brick.controllab.sensor
org.chabala.brick.controllab
org.chabala.brick.controllab.sensor org.chabala.brick.controllab
org.chabala.brick.controllab.sensor

Explanation

[ summary ] [ packages ] [ cycles ] [ explanations ]

The following explanations are for quick reference and are lifted directly from the original JDepend documentation.

Term Description
Number of Classes The number of concrete and abstract classes (and interfaces) in the package is an indicator of the extensibility of the package.
Afferent Couplings The number of other packages that depend upon classes within the package is an indicator of the package's responsibility.
Efferent Couplings The number of other packages that the classes in the package depend upon is an indicator of the package's independence.
Abstractness The ratio of the number of abstract classes (and interfaces) in the analyzed package to the total number of classes in the analyzed package. The range for this metric is 0 to 1, with A=0 indicating a completely concrete package and A=1 indicating a completely abstract package.
Instability The ratio of efferent coupling (Ce) to total coupling (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.
Distance The perpendicular distance of a package from the idealized line A + I = 1. This metric is an indicator of the package's balance between abstractness and stability. A package squarely on the main sequence is optimally balanced with respect to its abstractness and stability. Ideal packages are either completely abstract and stable (x=0, y=1) or completely concrete and instable (x=1, y=0). The range for this metric is 0 to 1, with D=0 indicating a package that is coincident with the main sequence and D=1 indicating a package that is as far from the main sequence as possible.
Cycles Packages participating in a package dependency cycle are in a deadly embrace with respect to reusability and their release cycle. Package dependency cycles can be easily identified by reviewing the textual reports of dependency cycles. Once these dependency cycles have been identified with JDepend, they can be broken by employing various object-oriented techniques.