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.rribbit 7 5 2 5 7 29.0% 58.0% 13.0% 1
org.rribbit.creation 3 2 1 2 7 33.0% 78.0% 11.0% 1
org.rribbit.creation.notification 1 0 1 2 1 100.0% 33.0% 33.0% 1
org.rribbit.dispatching 4 3 1 2 13 25.0% 87.0% 12.0% 1
org.rribbit.execution 5 3 2 2 3 40.0% 60.000004% 0.0% 1
org.rribbit.processing 7 4 3 2 16 43.0% 89.0% 32.0% 1
org.rribbit.retrieval 3 2 1 2 6 33.0% 75.0% 8.0% 1
org.rribbit.util 2 2 0 2 9 0.0% 82.0% 18.0% 1

Packages

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

org.rribbit

Afferent Couplings Efferent Couplings Abstractness Instability Distance
5 7 29.0% 58.0% 13.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.rribbit.Listener
org.rribbit.RequestResponseBus
org.rribbit.DefaultRequestResponseBus
org.rribbit.MultipleThrowablesOccurredException
org.rribbit.RRB
org.rribbit.Request
org.rribbit.Response
org.rribbit.creation
org.rribbit.dispatching
org.rribbit.execution
org.rribbit.processing
org.rribbit.util
java.io
java.lang
java.lang.annotation
java.util
java.util.concurrent
org.rribbit.dispatching
org.slf4j

org.rribbit.creation

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 7 33.0% 78.0% 11.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.rribbit.creation.ListenerObjectCreator
org.rribbit.creation.InstantiatingClassBasedListenerObjectCreator
org.rribbit.creation.ObjectBasedListenerObjectCreator
org.rribbit.retrieval
org.rribbit.util
java.lang
java.lang.reflect
java.util
java.util.concurrent
org.rribbit
org.rribbit.creation.notification
org.slf4j

org.rribbit.creation.notification

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 1 100.0% 33.0% 33.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.rribbit.creation.notification.ListenerObjectCreationObserver
None org.rribbit.creation
org.rribbit.retrieval
java.lang

org.rribbit.dispatching

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 13 25.0% 87.0% 12.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.rribbit.dispatching.RequestDispatcher
org.rribbit.dispatching.HttpRequestDispatcher
org.rribbit.dispatching.LocalRequestDispatcher
org.rribbit.dispatching.RmiRequestDispatcher
org.rribbit
org.rribbit.util
java.io
java.lang
java.rmi.registry
java.util
javax.rmi.ssl
org.apache.http
org.apache.http.client.methods
org.apache.http.entity
org.apache.http.impl.client
org.rribbit
org.rribbit.processing
org.rribbit.util
org.slf4j

org.rribbit.execution

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 3 40.0% 60.000004% 0.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.rribbit.execution.AbstractListenerObjectExecutor$ExecutionResult
org.rribbit.execution.ListenerObjectExecutor
org.rribbit.execution.AbstractListenerObjectExecutor$ObjectResult
org.rribbit.execution.AbstractListenerObjectExecutor$ThrowableResult
org.rribbit.execution.AbstractListenerObjectExecutor$VoidResult
org.rribbit.processing
org.rribbit.util
java.lang
java.util
org.rribbit

org.rribbit.processing

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 16 43.0% 89.0% 32.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.rribbit.processing.HttpRequestProcessorServlet
org.rribbit.processing.RequestProcessor
org.rribbit.processing.RmiRequestProcessor
org.rribbit.processing.JmsRequestProcessor
org.rribbit.processing.LocalRequestProcessor
org.rribbit.processing.RmiRequestProcessorImpl
org.rribbit.processing.SpringHttpRequestProcessorServlet
org.rribbit.dispatching
org.rribbit.util
java.io
java.lang
java.rmi
java.rmi.registry
java.rmi.server
java.util
javax.jms
javax.rmi.ssl
javax.servlet.http
org.rribbit
org.rribbit.execution
org.rribbit.retrieval
org.rribbit.util
org.slf4j
org.springframework.web.context
org.springframework.web.context.support

org.rribbit.retrieval

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 6 33.0% 75.0% 8.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.rribbit.retrieval.ListenerObjectRetriever
org.rribbit.retrieval.CachedListenerObjectRetriever
org.rribbit.retrieval.CachedListenerObjectRetriever$RetrievalRequest
org.rribbit.processing
org.rribbit.util
java.lang
java.util
java.util.concurrent
org.rribbit.creation
org.rribbit.creation.notification
org.slf4j

org.rribbit.util

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.rribbit.util.Base64Util
org.rribbit.util.RRiBbitUtil
org.rribbit.dispatching
org.rribbit.processing
java.io
java.lang
java.util
org.rribbit
org.rribbit.creation
org.rribbit.dispatching
org.rribbit.execution
org.rribbit.processing
org.rribbit.retrieval

Cycles

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

Package Package Dependencies
org.rribbit org.rribbit.dispatching
org.rribbit
org.rribbit.creation org.rribbit
org.rribbit.dispatching
org.rribbit
org.rribbit.dispatching org.rribbit
org.rribbit.dispatching
org.rribbit.execution org.rribbit
org.rribbit.dispatching
org.rribbit
org.rribbit.processing org.rribbit.retrieval
org.rribbit.creation
org.rribbit
org.rribbit.dispatching
org.rribbit
org.rribbit.retrieval org.rribbit.creation
org.rribbit
org.rribbit.dispatching
org.rribbit
org.rribbit.util org.rribbit.retrieval
org.rribbit.creation
org.rribbit
org.rribbit.dispatching
org.rribbit

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.