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.nabla 4 4 0 4 3 0.0% 43.0% 57.0% 1
org.apache.commons.nabla.caching 1 1 0 0 3 0.0% 100.0% 0.0% 1
org.apache.commons.nabla.forward 2 2 0 0 11 0.0% 100.0% 0.0% 1
org.apache.commons.nabla.forward.analysis 6 5 1 3 13 17.0% 81.0% 2.0% 1
org.apache.commons.nabla.forward.arithmetic 6 6 0 1 5 0.0% 83.0% 17.0% 1
org.apache.commons.nabla.forward.instructions 11 11 0 1 6 0.0% 86.0% 14.0% 1
org.apache.commons.nabla.forward.trimming 4 3 1 1 2 25.0% 67.0% 8.0% 1

Packages

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

org.apache.commons.nabla

Afferent Couplings Efferent Couplings Abstractness Instability Distance
4 3 0.0% 43.0% 57.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.nabla.DifferentiationException
org.apache.commons.nabla.DifferentiationException$1
org.apache.commons.nabla.DifferentiationException$2
org.apache.commons.nabla.NablaMessages
 org.apache.commons.nabla.forward
org.apache.commons.nabla.forward.analysis
org.apache.commons.nabla.forward.arithmetic
org.apache.commons.nabla.forward.instructions
 java.lang
java.util
org.apache.commons.math3.exception.util

org.apache.commons.nabla.caching

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 3 0.0% 100.0% 0.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.nabla.caching.FetchDifferentiator
 None java.lang
org.apache.commons.math3.analysis
org.apache.commons.math3.analysis.differentiation

org.apache.commons.nabla.forward

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 11 0.0% 100.0% 0.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.nabla.forward.ForwardModeDifferentiator
org.apache.commons.nabla.forward.ForwardModeDifferentiator$DerivativeLoader
 None java.io
java.lang
java.lang.reflect
java.util
org.apache.commons.math3.analysis
org.apache.commons.math3.analysis.differentiation
org.apache.commons.math3.util
org.apache.commons.nabla
org.apache.commons.nabla.forward.analysis
org.objectweb.asm
org.objectweb.asm.tree

org.apache.commons.nabla.forward.analysis

Afferent Couplings Efferent Couplings Abstractness Instability Distance
3 13 17.0% 81.0% 2.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.nabla.forward.analysis.InstructionsTransformer
 org.apache.commons.nabla.forward.analysis.ClassDifferentiator
org.apache.commons.nabla.forward.analysis.MethodDifferentiator
org.apache.commons.nabla.forward.analysis.MethodDifferentiator$FlowAnalyzer
org.apache.commons.nabla.forward.analysis.TrackingInterpreter
org.apache.commons.nabla.forward.analysis.TrackingValue
 org.apache.commons.nabla.forward
org.apache.commons.nabla.forward.arithmetic
org.apache.commons.nabla.forward.instructions
 java.io
java.lang
java.lang.reflect
java.util
org.apache.commons.math3.analysis
org.apache.commons.math3.analysis.differentiation
org.apache.commons.nabla
org.apache.commons.nabla.forward.arithmetic
org.apache.commons.nabla.forward.instructions
org.apache.commons.nabla.forward.trimming
org.objectweb.asm
org.objectweb.asm.tree
org.objectweb.asm.tree.analysis

org.apache.commons.nabla.forward.arithmetic

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 org.apache.commons.nabla.forward.arithmetic.DAddTransformer
org.apache.commons.nabla.forward.arithmetic.DDivTransformer
org.apache.commons.nabla.forward.arithmetic.DMulTransformer
org.apache.commons.nabla.forward.arithmetic.DNegTransformer
org.apache.commons.nabla.forward.arithmetic.DRemTransformer
org.apache.commons.nabla.forward.arithmetic.DSubTransformer
 org.apache.commons.nabla.forward.analysis
 java.lang
org.apache.commons.nabla
org.apache.commons.nabla.forward.analysis
org.objectweb.asm
org.objectweb.asm.tree

org.apache.commons.nabla.forward.instructions

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 6 0.0% 86.0% 14.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.nabla.forward.instructions.DLoadTransformer
org.apache.commons.nabla.forward.instructions.DReturnTransformer
org.apache.commons.nabla.forward.instructions.DStoreTransformer
org.apache.commons.nabla.forward.instructions.DcmpTransformer
org.apache.commons.nabla.forward.instructions.Dup2Transformer
org.apache.commons.nabla.forward.instructions.Dup2X1Transformer
org.apache.commons.nabla.forward.instructions.Dup2X2Transformer
org.apache.commons.nabla.forward.instructions.InvokeStaticTransformer
org.apache.commons.nabla.forward.instructions.NarrowingTransformer
org.apache.commons.nabla.forward.instructions.Pop2Transformer
org.apache.commons.nabla.forward.instructions.WideningTransformer
 org.apache.commons.nabla.forward.analysis
 java.lang
org.apache.commons.math3.analysis.differentiation
org.apache.commons.nabla
org.apache.commons.nabla.forward.analysis
org.objectweb.asm
org.objectweb.asm.tree

org.apache.commons.nabla.forward.trimming

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 2 25.0% 67.0% 8.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.nabla.forward.trimming.BytecodeTrimmer
 org.apache.commons.nabla.forward.trimming.DLoadPop2Trimmer
org.apache.commons.nabla.forward.trimming.SwappedDloadTrimmer
org.apache.commons.nabla.forward.trimming.SwappedDstoreTrimmer
 org.apache.commons.nabla.forward.analysis
 java.lang
org.objectweb.asm.tree

Cycles

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

Package Package Dependencies
org.apache.commons.nabla.forward org.apache.commons.nabla.forward.analysis
org.apache.commons.nabla.forward.arithmetic
org.apache.commons.nabla.forward.analysis
org.apache.commons.nabla.forward.analysis org.apache.commons.nabla.forward.arithmetic
org.apache.commons.nabla.forward.analysis
org.apache.commons.nabla.forward.arithmetic org.apache.commons.nabla.forward.analysis
org.apache.commons.nabla.forward.arithmetic
org.apache.commons.nabla.forward.instructions org.apache.commons.nabla.forward.analysis
org.apache.commons.nabla.forward.arithmetic
org.apache.commons.nabla.forward.analysis

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.