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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
rest 4 3 1 2 9 25.0% 82.0% 7.0% 1
rest.db1 3 2 1 1 14 33.0% 93.0% 27.000002% 1
rest.db2 3 2 1 1 14 33.0% 93.0% 27.000002% 1

Packages

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

rest

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 9 25.0% 82.0% 7.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
rest.Account
rest.AccountRepository
rest.AccountRepository$Accounts
rest.Application
rest.db1
rest.db2
com.google.common.collect
java.lang
java.math
org.springframework.boot
org.springframework.hateoas
org.springframework.hateoas.mvc
org.springframework.http
rest.db1
rest.db2

rest.db1

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 14 33.0% 93.0% 27.000002%
Abstract Classes Concrete Classes Used by Packages Uses Packages
rest.db1.FirstAccountRepository
rest.db1.FirstAccount
rest.db1.FirstDsConfig
rest
com.zaxxer.hikari
java.io
java.lang
java.math
java.util
javax.persistence
javax.sql
org.springframework.boot.autoconfigure.jdbc
org.springframework.boot.jdbc
org.springframework.boot.orm.jpa
org.springframework.data.repository
org.springframework.orm.jpa
org.springframework.transaction
rest

rest.db2

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 14 33.0% 93.0% 27.000002%
Abstract Classes Concrete Classes Used by Packages Uses Packages
rest.db2.SecondAccountRepository
rest.db2.SecondAccount
rest.db2.SecondDsConfig
rest
com.zaxxer.hikari
java.io
java.lang
java.math
java.util
javax.persistence
javax.sql
org.springframework.boot.autoconfigure.jdbc
org.springframework.boot.jdbc
org.springframework.boot.orm.jpa
org.springframework.data.repository
org.springframework.orm.jpa
org.springframework.transaction
rest

Cycles

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

Package Package Dependencies
rest rest.db1
rest
rest.db1 rest
rest.db1
rest.db2 rest
rest.db1
rest

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.