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.apache.commons.modeler 19 18 1 3 11 5.0% 79.0% 16.0% 1
org.apache.commons.modeler.ant 7 7 0 0 9 0.0% 100.0% 0.0% 1
org.apache.commons.modeler.mbeans 2 2 0 0 8 0.0% 100.0% 0.0% 1
org.apache.commons.modeler.modules 9 8 1 1 13 11.0% 93.0% 4.0% 1
org.apache.commons.modeler.util 6 4 2 2 12 33.0% 86.0% 19.0% 1

Packages

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

org.apache.commons.modeler

Afferent Couplings Efferent Couplings Abstractness Instability Distance
3 11 5.0% 79.0% 16.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.modeler.RegistryMBean
org.apache.commons.modeler.AttributeInfo
org.apache.commons.modeler.BaseAttributeFilter
org.apache.commons.modeler.BaseModelMBean
org.apache.commons.modeler.BaseModelMBean$MethodKey
org.apache.commons.modeler.BaseNotification
org.apache.commons.modeler.BaseNotificationBroadcaster
org.apache.commons.modeler.BaseNotificationBroadcasterEntry
org.apache.commons.modeler.ConstructorInfo
org.apache.commons.modeler.FeatureInfo
org.apache.commons.modeler.FieldInfo
org.apache.commons.modeler.FixedNotificationFilter
org.apache.commons.modeler.JndiJmx
org.apache.commons.modeler.Main
org.apache.commons.modeler.ManagedBean
org.apache.commons.modeler.NotificationInfo
org.apache.commons.modeler.OperationInfo
org.apache.commons.modeler.ParameterInfo
org.apache.commons.modeler.Registry
org.apache.commons.modeler.ant
org.apache.commons.modeler.mbeans
org.apache.commons.modeler.modules
java.io
java.lang
java.lang.reflect
java.net
java.util
javax.management
javax.management.modelmbean
javax.naming
org.apache.commons.logging
org.apache.commons.modeler.modules
org.apache.commons.modeler.util

org.apache.commons.modeler.ant

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 9 0.0% 100.0% 0.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.modeler.ant.Arg
org.apache.commons.modeler.ant.JmxInvoke
org.apache.commons.modeler.ant.JmxSet
org.apache.commons.modeler.ant.MLETTask
org.apache.commons.modeler.ant.ModelerTask
org.apache.commons.modeler.ant.RegistryTask
org.apache.commons.modeler.ant.ServiceTask
None java.io
java.lang
java.net
java.util
javax.management
javax.management.loading
org.apache.commons.logging
org.apache.commons.modeler
org.apache.tools.ant

org.apache.commons.modeler.mbeans

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 8 0.0% 100.0% 0.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.modeler.mbeans.MBeanProxy
org.apache.commons.modeler.mbeans.SimpleRemoteConnector
None java.io
java.lang
java.net
java.util
java.util.jar
javax.management
org.apache.commons.logging
org.apache.commons.modeler

org.apache.commons.modeler.modules

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 13 11.0% 93.0% 4.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.modeler.modules.MbeansSourceMBean
org.apache.commons.modeler.modules.MbeansDescriptorsDOMSource
org.apache.commons.modeler.modules.MbeansDescriptorsDigesterSource
org.apache.commons.modeler.modules.MbeansDescriptorsDynamicMBeanSource
org.apache.commons.modeler.modules.MbeansDescriptorsIntrospectionSource
org.apache.commons.modeler.modules.MbeansDescriptorsSerSource
org.apache.commons.modeler.modules.MbeansSource
org.apache.commons.modeler.modules.MbeansSource$ArgsInfo
org.apache.commons.modeler.modules.ModelerSource
org.apache.commons.modeler
java.io
java.lang
java.lang.reflect
java.net
java.util
javax.management
javax.management.loading
javax.xml.transform
org.apache.commons.digester
org.apache.commons.logging
org.apache.commons.modeler
org.apache.commons.modeler.util
org.w3c.dom

org.apache.commons.modeler.util

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 12 33.0% 86.0% 19.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.modeler.util.IntrospectionUtils$AttributeHolder
org.apache.commons.modeler.util.IntrospectionUtils$PropertySource
org.apache.commons.modeler.util.DomUtil
org.apache.commons.modeler.util.DomUtil$NullResolver
org.apache.commons.modeler.util.IntrospectionUtils
org.apache.commons.modeler.util.IntrospectionUtils$1
org.apache.commons.modeler
org.apache.commons.modeler.modules
java.io
java.lang
java.lang.reflect
java.net
java.util
javax.xml.parsers
javax.xml.transform
javax.xml.transform.dom
javax.xml.transform.stream
org.apache.commons.logging
org.w3c.dom
org.xml.sax

Cycles

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

Package Package Dependencies
org.apache.commons.modeler org.apache.commons.modeler.modules
org.apache.commons.modeler
org.apache.commons.modeler.ant org.apache.commons.modeler
org.apache.commons.modeler.modules
org.apache.commons.modeler
org.apache.commons.modeler.mbeans org.apache.commons.modeler
org.apache.commons.modeler.modules
org.apache.commons.modeler
org.apache.commons.modeler.modules org.apache.commons.modeler
org.apache.commons.modeler.modules

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.