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.latka 11 9 2 6 15 18.0% 71.0% 10.0% 1
org.apache.commons.latka.event 13 8 5 4 4 38.0% 50.0% 12.0% 1
org.apache.commons.latka.http 14 8 6 7 7 43.0% 50.0% 7.0% 1
org.apache.commons.latka.jelly 14 14 0 2 9 0.0% 82.0% 18.0% 1
org.apache.commons.latka.jelly.validators 10 9 1 0 9 10.0% 100.0% 10.0% 1
org.apache.commons.latka.junit 4 4 0 0 11 0.0% 100.0% 0.0% 1
org.apache.commons.latka.servlet 4 4 0 0 8 0.0% 100.0% 0.0% 1
org.apache.commons.latka.validators 11 9 2 1 13 18.0% 93.0% 11.0% 1

Packages

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

org.apache.commons.latka

Afferent Couplings Efferent Couplings Abstractness Instability Distance
6 15 18.0% 71.0% 10.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.latka.AbstractReporter
org.apache.commons.latka.Validator
 org.apache.commons.latka.DefaultLatkaEventInfo
org.apache.commons.latka.HtmlPrettyPrintWriter
org.apache.commons.latka.Latka
org.apache.commons.latka.LatkaException
org.apache.commons.latka.LatkaProperties
org.apache.commons.latka.LatkaProperties$LatkaThreadLocal
org.apache.commons.latka.Suite
org.apache.commons.latka.ValidationException
org.apache.commons.latka.XMLReporter
 org.apache.commons.latka.event
org.apache.commons.latka.jelly
org.apache.commons.latka.jelly.validators
org.apache.commons.latka.junit
org.apache.commons.latka.servlet
org.apache.commons.latka.validators
 java.io
java.lang
java.net
java.text
java.util
javax.xml.transform
javax.xml.transform.stream
org.apache.commons.jelly
org.apache.commons.latka.event
org.apache.commons.latka.http
org.apache.commons.latka.jelly
org.apache.log4j
org.dom4j
org.dom4j.io
org.xml.sax

org.apache.commons.latka.event

Afferent Couplings Efferent Couplings Abstractness Instability Distance
4 4 38.0% 50.0% 12.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.latka.event.LatkaEvent
org.apache.commons.latka.event.LatkaEventInfo
org.apache.commons.latka.event.LatkaEventListener
org.apache.commons.latka.event.RequestEvent
org.apache.commons.latka.event.SuiteEvent
 org.apache.commons.latka.event.BaseRequestEvent
org.apache.commons.latka.event.LatkaEventPublisher
org.apache.commons.latka.event.ReportMessageEvent
org.apache.commons.latka.event.RequestErrorEvent
org.apache.commons.latka.event.RequestFailedEvent
org.apache.commons.latka.event.RequestSkippedEvent
org.apache.commons.latka.event.RequestSucceededEvent
org.apache.commons.latka.event.SuiteCompletedEvent
 org.apache.commons.latka
org.apache.commons.latka.jelly
org.apache.commons.latka.jelly.validators
org.apache.commons.latka.junit
 java.lang
java.util
org.apache.commons.latka
org.apache.commons.latka.http

org.apache.commons.latka.http

Afferent Couplings Efferent Couplings Abstractness Instability Distance
7 7 43.0% 50.0% 7.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.latka.http.Credentials
org.apache.commons.latka.http.Parameters
org.apache.commons.latka.http.Request
org.apache.commons.latka.http.RequestHeaders
org.apache.commons.latka.http.Response
org.apache.commons.latka.http.Session
 org.apache.commons.latka.http.CredentialsImpl
org.apache.commons.latka.http.MethodFactory
org.apache.commons.latka.http.ParametersImpl
org.apache.commons.latka.http.Proxy
org.apache.commons.latka.http.RequestHeadersImpl
org.apache.commons.latka.http.RequestImpl
org.apache.commons.latka.http.ResponseImpl
org.apache.commons.latka.http.SessionImpl
 org.apache.commons.latka
org.apache.commons.latka.event
org.apache.commons.latka.jelly
org.apache.commons.latka.jelly.validators
org.apache.commons.latka.junit
org.apache.commons.latka.servlet
org.apache.commons.latka.validators
 java.io
java.lang
java.net
java.util
org.apache.commons.httpclient
org.apache.commons.httpclient.methods
org.apache.log4j

org.apache.commons.latka.jelly

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 9 0.0% 82.0% 18.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.latka.jelly.CredentialsTag
org.apache.commons.latka.jelly.JellyUtils
org.apache.commons.latka.jelly.LatkaTagLibrary
org.apache.commons.latka.jelly.ParameterNameTag
org.apache.commons.latka.jelly.ParameterTag
org.apache.commons.latka.jelly.ParameterValueTag
org.apache.commons.latka.jelly.ReportMessageTag
org.apache.commons.latka.jelly.RequestBodyTag
org.apache.commons.latka.jelly.RequestHeaderTag
org.apache.commons.latka.jelly.RequestTag
org.apache.commons.latka.jelly.SessionTag
org.apache.commons.latka.jelly.SuiteSettings
org.apache.commons.latka.jelly.SuiteTag
org.apache.commons.latka.jelly.ValidateTag
 org.apache.commons.latka
org.apache.commons.latka.jelly.validators
 java.io
java.lang
java.net
java.util
org.apache.commons.jelly
org.apache.commons.latka
org.apache.commons.latka.event
org.apache.commons.latka.http
org.apache.log4j

org.apache.commons.latka.jelly.validators

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 9 10.0% 100.0% 10.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.latka.jelly.validators.HttpValidatorTagSupport
 org.apache.commons.latka.jelly.validators.ByteLengthTag
org.apache.commons.latka.jelly.validators.CookieTag
org.apache.commons.latka.jelly.validators.GoldenFileTag
org.apache.commons.latka.jelly.validators.MaxRequestTimeTag
org.apache.commons.latka.jelly.validators.RegexpTag
org.apache.commons.latka.jelly.validators.ResponseHeaderTag
org.apache.commons.latka.jelly.validators.StatusCodeTag
org.apache.commons.latka.jelly.validators.StatusTextTag
org.apache.commons.latka.jelly.validators.XPathTag
 None java.io
java.lang
org.apache.commons.jelly
org.apache.commons.latka
org.apache.commons.latka.event
org.apache.commons.latka.http
org.apache.commons.latka.jelly
org.apache.commons.latka.validators
org.apache.log4j

org.apache.commons.latka.junit

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.latka.junit.JUnitEventReporter
org.apache.commons.latka.junit.JUnitEventReporter$EventTestAdapter
org.apache.commons.latka.junit.JUnitTestAdapter
org.apache.commons.latka.junit.JUnitTestAdapter$TestCounter
 None java.io
java.lang
java.net
javax.xml.parsers
junit.framework
org.apache.commons.latka
org.apache.commons.latka.event
org.apache.commons.latka.http
org.apache.log4j
org.xml.sax
org.xml.sax.helpers

org.apache.commons.latka.servlet

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 8 0.0% 100.0% 0.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.latka.servlet.ViewResponseServlet
org.apache.commons.latka.servlet.ViewResponseServlet$1
org.apache.commons.latka.servlet.ViewResponseServlet$ToStringComparator
org.apache.commons.latka.servlet.ViewSuiteServlet
 None java.io
java.lang
java.net
java.util
javax.servlet.http
org.apache.commons.latka
org.apache.commons.latka.http
org.apache.log4j

org.apache.commons.latka.validators

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 13 18.0% 93.0% 11.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.latka.validators.BaseConditionalValidator
org.apache.commons.latka.validators.BaseValidator
 org.apache.commons.latka.validators.ByteLengthValidator
org.apache.commons.latka.validators.CookieValidator
org.apache.commons.latka.validators.GoldenFileValidator
org.apache.commons.latka.validators.MaxRequestTimeValidator
org.apache.commons.latka.validators.RegexpValidator
org.apache.commons.latka.validators.ResponseHeaderValidator
org.apache.commons.latka.validators.StatusCodeValidator
org.apache.commons.latka.validators.StatusTextValidator
org.apache.commons.latka.validators.XPathValidator
 org.apache.commons.latka.jelly.validators
 java.io
java.lang
java.text
java.util
org.apache.commons.latka
org.apache.commons.latka.http
org.apache.log4j
org.apache.regexp
org.jaxen
org.jaxen.jdom
org.jdom
org.jdom.input
org.jdom.output

Cycles

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

Package Package Dependencies
org.apache.commons.latka org.apache.commons.latka.event
org.apache.commons.latka
org.apache.commons.latka.event org.apache.commons.latka
org.apache.commons.latka.event
org.apache.commons.latka.jelly org.apache.commons.latka.event
org.apache.commons.latka
org.apache.commons.latka.event
org.apache.commons.latka.jelly.validators org.apache.commons.latka
org.apache.commons.latka.event
org.apache.commons.latka
org.apache.commons.latka.junit org.apache.commons.latka.event
org.apache.commons.latka
org.apache.commons.latka.event
org.apache.commons.latka.servlet org.apache.commons.latka
org.apache.commons.latka.event
org.apache.commons.latka
org.apache.commons.latka.validators org.apache.commons.latka
org.apache.commons.latka.event
org.apache.commons.latka

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.