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 Total

Classes
Abstract

Classes
Concrete

Classes
Afferent

Couplings
Efferent

Couplings
Abstractness Instability Distance
bsh.commands 3 0 3 0 3 0 100% 0%
org.drools 12 1 11 13 6 0.08 32% 60%
org.drools.io 2 0 2 3 11 0 79% 21%
org.drools.jsr94.jca.spi 2 0 2 0 9 0 100% 0%
org.drools.jsr94.rules 11 1 10 2 9 0.09 82% 9%
org.drools.jsr94.rules.admin 6 0 6 1 12 0 92% 8%
org.drools.reteoo 13 11 2 2 6 0.85 75% 60%
org.drools.reteoo.impl 24 2 22 2 6 0.08 75% 17%
org.drools.rule 10 0 10 12 4 0 25% 75%
org.drools.semantics.java 10 0 10 0 12 0 100% 0%
org.drools.semantics.java.parser 5 2 3 1 6 0.4 86% 26%
org.drools.semantics.jelly 3 0 3 0 9 0 100% 0%
org.drools.semantics.python 9 0 9 0 10 0 100% 0%
org.drools.smf 16 7 9 5 5 0.44 50% 6%
org.drools.spi 12 8 4 8 4 0.67 33% 0%
org.drools.tags.knowledge 8 1 7 1 8 0.12 89% 1%
org.drools.tags.rule 24 6 18 2 11 0.25 85% 10%
org.drools.tags.semantics 8 2 6 1 3 0.25 75% 0%

Packages

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

bsh.commands

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 3 0% 100% 0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
assertObject

modifyObject

retractObject

bsh

java.lang

org.drools

org.drools.jsr94.jca.spi

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 9 0% 100% 0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
RuleConnectionFactory

RuleManagedConnectionFactory

java.io

java.lang

java.util

javax.naming

javax.resource

javax.resource.cci

javax.resource.spi

javax.security.auth

org.drools.jsr94.rules

org.drools.reteoo

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 6 85% 75% 60%
Abstract Classes Concrete Classes Used by Packages Uses Packages
Agenda

ConditionNode

ExtractionNode

JoinMemory

JoinNode

ObjectTypeNode

ParameterNode

Rete

TerminalNode

TupleSink

TupleSource

Builder

ReteException

org.drools

org.drools.reteoo.impl

java.lang

java.util

org.drools

org.drools.reteoo.impl

org.drools.rule

org.drools.spi

org.drools.semantics.java.parser

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 6 40% 86% 26%
Abstract Classes Concrete Classes Used by Packages Uses Packages
JavaTokenTypes

JavaTreeParserTokenTypes

JavaLexer

JavaRecognizer

JavaTreeParser

org.drools.semantics.java

antlr

antlr.collections

antlr.collections.impl

java.io

java.lang

java.util

org.drools.semantics.jelly

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 9 0% 100% 0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
JellyConsequence

JellyConsequenceTag

SemanticsTagLibrary

java.lang

java.util

org.apache.commons.jelly

org.apache.commons.jelly.impl

org.drools

org.drools.rule

org.drools.spi

org.drools.tags.rule

org.xml.sax

org.drools.tags.knowledge

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 8 12% 89% 1%
Abstract Classes Concrete Classes Used by Packages Uses Packages
FactTagSupport

AssertTag

KnowledgeTag

KnowledgeTagLibrary

LoadRulesTag

ModifyTag

RetractTag

RuleBaseTag

org.drools.tags.rule

java.io

java.lang

java.net

java.util

org.apache.commons.jelly

org.drools

org.drools.io

org.drools.rule

org.drools.tags.semantics

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 3 25% 75% 0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
SemanticComponentTagSupport

SemanticsTagSupport

ConditionTag

ConsequenceTag

ExtractorTag

ObjectTypeTag

SemanticModuleTag

SemanticsTagLibrary

org.drools.io

java.lang

org.apache.commons.jelly

org.drools.smf

Cycles

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

Package Cyclic Dependencies
bsh.commands org.drools

org.drools.rule

org.drools.spi

org.drools

org.drools org.drools.rule

org.drools.spi

org.drools

org.drools.io org.drools.rule

org.drools.spi

org.drools

org.drools.rule

org.drools.jsr94.jca.spi org.drools.jsr94.rules

org.drools

org.drools.rule

org.drools.spi

org.drools

org.drools.jsr94.rules org.drools

org.drools.rule

org.drools.spi

org.drools

org.drools.jsr94.rules.admin org.drools.rule

org.drools.spi

org.drools

org.drools.rule

org.drools.reteoo org.drools.spi

org.drools

org.drools.rule

org.drools.spi

org.drools.reteoo.impl org.drools.spi

org.drools

org.drools.rule

org.drools.spi

org.drools.rule org.drools.spi

org.drools

org.drools.rule

org.drools.semantics.java org.drools.spi

org.drools

org.drools.rule

org.drools.spi

org.drools.semantics.jelly org.drools.spi

org.drools

org.drools.rule

org.drools.spi

org.drools.semantics.python org.drools.spi

org.drools

org.drools.rule

org.drools.spi

org.drools.smf org.drools.spi

org.drools

org.drools.rule

org.drools.spi

org.drools.spi org.drools

org.drools.rule

org.drools.spi

org.drools.tags.knowledge org.drools

org.drools.rule

org.drools.spi

org.drools

org.drools.tags.rule org.drools.spi

org.drools

org.drools.rule

org.drools.spi

org.drools.tags.semantics org.drools.smf

org.drools.spi

org.drools

org.drools.rule

org.drools.spi

Explanations

[ 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.