Geometry – JDepend Report Metrics

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.geometry.io.core	7	3	4	2	10	57.0%	83.0%	40.0%	1
org.apache.commons.geometry.io.core.input	2	1	1	1	4	50.0%	80.0%	30.000002%	1
org.apache.commons.geometry.io.core.internal	6	2	4	1	4	67.0%	80.0%	47.0%	1
org.apache.commons.geometry.io.core.output	2	1	1	1	4	50.0%	80.0%	30.000002%	1

Packages

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

org.apache.commons.geometry.io.core

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
2	10	57.0%	83.0%	40.0%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
org.apache.commons.geometry.io.core.BoundaryReadHandler org.apache.commons.geometry.io.core.BoundaryWriteHandler org.apache.commons.geometry.io.core.GeometryFormat org.apache.commons.geometry.io.core.GeometryIOMetadata	org.apache.commons.geometry.io.core.AbstractGeometryIOMetadata org.apache.commons.geometry.io.core.BoundaryIOManager$1 org.apache.commons.geometry.io.core.BoundaryIOManager$HandlerRegistry	org.apache.commons.geometry.io.core.input org.apache.commons.geometry.io.core.output	java.lang java.nio.charset java.text java.util java.util.stream org.apache.commons.geometry.core.partitioning org.apache.commons.geometry.io.core.input org.apache.commons.geometry.io.core.internal org.apache.commons.geometry.io.core.output org.apache.commons.numbers.core

org.apache.commons.geometry.io.core.input

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
1	4	50.0%	80.0%	30.000002%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
org.apache.commons.geometry.io.core.input.GeometryInput	org.apache.commons.geometry.io.core.input.StreamGeometryInput	org.apache.commons.geometry.io.core	java.io java.lang java.nio.charset org.apache.commons.geometry.io.core

org.apache.commons.geometry.io.core.internal

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
1	4	67.0%	80.0%	47.0%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
org.apache.commons.geometry.io.core.internal.IOConsumer org.apache.commons.geometry.io.core.internal.IOFunction org.apache.commons.geometry.io.core.internal.IOSupplier org.apache.commons.geometry.io.core.internal.IOToIntFunction	org.apache.commons.geometry.io.core.internal.CharReadBuffer org.apache.commons.geometry.io.core.internal.SimpleTextParser$StringCollector	org.apache.commons.geometry.io.core	java.io java.lang java.util java.util.function

org.apache.commons.geometry.io.core.output

Afferent Couplings	Efferent Couplings	Abstractness	Instability	Distance
1	4	50.0%	80.0%	30.000002%

Abstract Classes	Concrete Classes	Used by Packages	Uses Packages
org.apache.commons.geometry.io.core.output.GeometryOutput	org.apache.commons.geometry.io.core.output.StreamGeometryOutput	org.apache.commons.geometry.io.core	java.io java.lang java.nio.charset org.apache.commons.geometry.io.core

Cycles

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

Package	Package Dependencies
org.apache.commons.geometry.io.core	org.apache.commons.geometry.io.core.input org.apache.commons.geometry.io.core
org.apache.commons.geometry.io.core.input	org.apache.commons.geometry.io.core org.apache.commons.geometry.io.core.input
org.apache.commons.geometry.io.core.output	org.apache.commons.geometry.io.core org.apache.commons.geometry.io.core.input org.apache.commons.geometry.io.core

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.