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
net.sf.jdigg.arguments 7 4 3 1 6 43.0% 86.0% 29.0% 1
net.sf.jdigg.beans 11 11 0 2 3 0.0% 60.000004% 40.0% 1
net.sf.jdigg.exception 4 3 1 2 1 25.0% 33.0% 42.0% 1
net.sf.jdigg.parser 1 1 0 1 5 0.0% 83.0% 17.0% 1
net.sf.jdigg.requests 7 6 1 0 10 14.0% 100.0% 14.0% 1
net.sf.jdigg.util 2 2 0 2 2 0.0% 50.0% 50.0% 1

Packages

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

net.sf.jdigg.arguments

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 6 43.0% 86.0% 29.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
net.sf.jdigg.arguments.AbstractArguments
net.sf.jdigg.arguments.AbstractSortCountOffsetArguments
net.sf.jdigg.arguments.AbstractSortCountOffsetMinMaxDateArguments
 net.sf.jdigg.arguments.ArgumentValues
net.sf.jdigg.arguments.ListCommentsArguments
net.sf.jdigg.arguments.ListContainersArguments
net.sf.jdigg.arguments.ListStoriesArguments
 net.sf.jdigg.requests
 java.io
java.lang
java.net
java.util
net.sf.jdigg.util
org.apache.commons.logging

net.sf.jdigg.beans

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 3 0.0% 60.000004% 40.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None net.sf.jdigg.beans.Comment
net.sf.jdigg.beans.Comments
net.sf.jdigg.beans.Container
net.sf.jdigg.beans.ContainerWithTopics
net.sf.jdigg.beans.Containers
net.sf.jdigg.beans.DiggError
net.sf.jdigg.beans.Stories
net.sf.jdigg.beans.Story
net.sf.jdigg.beans.Thumbnail
net.sf.jdigg.beans.Topic
net.sf.jdigg.beans.User
 net.sf.jdigg.parser
net.sf.jdigg.requests
 java.lang
java.util
org.apache.commons.lang.builder

net.sf.jdigg.exception

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 1 25.0% 33.0% 42.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
net.sf.jdigg.exception.JDiggException
 net.sf.jdigg.exception.DiggException
net.sf.jdigg.exception.RequestException
net.sf.jdigg.exception.ResponseParserException
 net.sf.jdigg.parser
net.sf.jdigg.requests
 java.lang

net.sf.jdigg.parser

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 5 0.0% 83.0% 17.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None net.sf.jdigg.parser.ResponseParser
 net.sf.jdigg.requests
 java.io
java.lang
net.sf.jdigg.beans
net.sf.jdigg.exception
org.apache.commons.digester

net.sf.jdigg.requests

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 10 14.0% 100.0% 14.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
net.sf.jdigg.requests.AbstractRequest
 net.sf.jdigg.requests.ListCommentsRequest
net.sf.jdigg.requests.ListContainersRequest
net.sf.jdigg.requests.ListStoriesRequest
net.sf.jdigg.requests.ProxyHost
net.sf.jdigg.requests.ProxyUser
net.sf.jdigg.requests.RequestConfig
 None java.lang
net.sf.jdigg.arguments
net.sf.jdigg.beans
net.sf.jdigg.exception
net.sf.jdigg.parser
net.sf.jdigg.util
org.apache.commons.httpclient
org.apache.commons.httpclient.auth
org.apache.commons.httpclient.methods
org.apache.commons.logging

net.sf.jdigg.util

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 2 0.0% 50.0% 50.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None net.sf.jdigg.util.Assert
net.sf.jdigg.util.DateUtil
 net.sf.jdigg.arguments
net.sf.jdigg.requests
 java.lang
java.util

Cycles

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

There are no cyclic dependencies.

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.