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.shiro.samples.spring 2 2 0 2 9 0.0% 82.0% 18.0% 1
org.apache.shiro.samples.spring.config 4 4 0 0 21 0.0% 100.0% 0.0% 1
org.apache.shiro.samples.spring.realm 1 1 0 1 7 0.0% 88.0% 12.0% 1
org.apache.shiro.samples.spring.web 5 5 0 0 12 0.0% 100.0% 0.0% 1

Packages

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

org.apache.shiro.samples.spring

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 9 0.0% 82.0% 18.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.shiro.samples.spring.BootstrapDataPopulator
org.apache.shiro.samples.spring.DefaultSampleManager
org.apache.shiro.samples.spring.config
org.apache.shiro.samples.spring.web
java.lang
javax.sql
org.apache.shiro
org.apache.shiro.crypto.hash
org.apache.shiro.session
org.apache.shiro.subject
org.slf4j
org.springframework.beans.factory
org.springframework.jdbc.core

org.apache.shiro.samples.spring.config

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 21 0.0% 100.0% 0.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.shiro.samples.spring.config.ApplicationConfig
org.apache.shiro.samples.spring.config.JspViewsConfig
org.apache.shiro.samples.spring.config.RemotingServletConfig
org.apache.shiro.samples.spring.config.ServletApplicationInitializer
None java.lang
java.util
javax.servlet
javax.sql
org.apache.shiro.authc.credential
org.apache.shiro.cache.ehcache
org.apache.shiro.mgt
org.apache.shiro.samples.spring
org.apache.shiro.samples.spring.realm
org.apache.shiro.spring.remoting
org.apache.shiro.spring.web.config
org.springframework.jdbc.datasource
org.springframework.remoting.httpinvoker
org.springframework.web
org.springframework.web.context
org.springframework.web.context.support
org.springframework.web.filter
org.springframework.web.servlet
org.springframework.web.servlet.config.annotation
org.springframework.web.servlet.view
org.springframework.web.util

org.apache.shiro.samples.spring.realm

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 7 0.0% 88.0% 12.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.shiro.samples.spring.realm.SaltAwareJdbcRealm
org.apache.shiro.samples.spring.config
java.lang
java.sql
javax.sql
org.apache.shiro.authc
org.apache.shiro.realm.jdbc
org.apache.shiro.util
org.slf4j

org.apache.shiro.samples.spring.web

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 12 0.0% 100.0% 0.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.shiro.samples.spring.web.IndexController
org.apache.shiro.samples.spring.web.JnlpController
org.apache.shiro.samples.spring.web.LoginController
org.apache.shiro.samples.spring.web.LogoutController
org.apache.shiro.samples.spring.web.RootRedirectController
None java.lang
java.util
javax.servlet.http
org.apache.shiro
org.apache.shiro.authc
org.apache.shiro.samples.spring
org.apache.shiro.session
org.apache.shiro.subject
org.slf4j
org.springframework.ui
org.springframework.web.servlet
org.springframework.web.servlet.mvc

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.