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.sat4j.csp 15 11 4 3 17 27.000002% 85.0% 12.0% 1
org.sat4j.csp.constraints 7 5 2 1 6 29.0% 86.0% 14.0% 1
org.sat4j.csp.encodings 3 3 0 2 5 0.0% 71.0% 29.0% 1
org.sat4j.reader 5 5 0 1 11 0.0% 92.0% 8.0% 1

Packages

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

org.sat4j.csp

Afferent Couplings Efferent Couplings Abstractness Instability Distance
3 17 27.000002% 85.0% 12.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.sat4j.csp.Clausifiable
org.sat4j.csp.Domain
org.sat4j.csp.Encoding
org.sat4j.csp.Evaluable
org.sat4j.csp.CSPLauncher
org.sat4j.csp.Constant
org.sat4j.csp.EnumeratedDomain
org.sat4j.csp.EnumeratedDomain$1
org.sat4j.csp.Predicate
org.sat4j.csp.RangeDomain
org.sat4j.csp.RangeDomain$1
org.sat4j.csp.SingletonDomain
org.sat4j.csp.SingletonDomain$1
org.sat4j.csp.SolverFactory
org.sat4j.csp.Var
org.sat4j.csp.constraints
org.sat4j.csp.encodings
org.sat4j.reader
java.io
java.lang
java.net
java.util
org.mozilla.javascript
org.sat4j
org.sat4j.core
org.sat4j.csp.encodings
org.sat4j.minisat.constraints
org.sat4j.minisat.core
org.sat4j.minisat.learning
org.sat4j.minisat.orders
org.sat4j.minisat.restarts
org.sat4j.minisat.uip
org.sat4j.reader
org.sat4j.specs
org.sat4j.tools

org.sat4j.csp.constraints

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 6 29.0% 86.0% 14.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.sat4j.csp.constraints.Relation
org.sat4j.csp.constraints.Supports
org.sat4j.csp.constraints.AllDiff
org.sat4j.csp.constraints.BessiereSupports
org.sat4j.csp.constraints.GentSupports
org.sat4j.csp.constraints.Nogoods
org.sat4j.csp.constraints.WalshSupports
org.sat4j.reader
java.lang
java.util
org.sat4j.core
org.sat4j.csp
org.sat4j.csp.encodings
org.sat4j.specs

org.sat4j.csp.encodings

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 5 0.0% 71.0% 29.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.sat4j.csp.encodings.BinarySupportEncoding
org.sat4j.csp.encodings.DirectEncoding
org.sat4j.csp.encodings.GeneralizedSupportEncoding
org.sat4j.csp
org.sat4j.csp.constraints
java.lang
java.util
org.sat4j.core
org.sat4j.csp
org.sat4j.specs

org.sat4j.reader

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 11 0.0% 92.0% 8.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.sat4j.reader.CSPExtSupportReader
org.sat4j.reader.CSPInstanceReader
org.sat4j.reader.CSPReader
org.sat4j.reader.CSPSupportReader
org.sat4j.reader.XMLCSPReader
org.sat4j.csp
java.io
java.lang
java.net
java.util
javax.xml.parsers
org.sat4j.core
org.sat4j.csp
org.sat4j.csp.constraints
org.sat4j.csp.xml
org.sat4j.specs
org.xml.sax

Cycles

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

Package Package Dependencies
org.sat4j.csp org.sat4j.reader
org.sat4j.csp
org.sat4j.csp.constraints org.sat4j.csp
org.sat4j.reader
org.sat4j.csp
org.sat4j.csp.encodings org.sat4j.csp
org.sat4j.reader
org.sat4j.csp
org.sat4j.reader org.sat4j.csp
org.sat4j.reader

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.