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.pipeline 15 7 8 7 3 52.999996% 30.000002% 17.0% 1
org.apache.commons.pipeline.config 10 10 0 0 8 0.0% 100.0% 0.0% 1
org.apache.commons.pipeline.driver 15 14 1 0 6 7.0% 100.0% 7.0% 1
org.apache.commons.pipeline.event 3 3 0 2 3 0.0% 60.000004% 40.0% 1
org.apache.commons.pipeline.listener 1 1 0 0 4 0.0% 100.0% 0.0% 1
org.apache.commons.pipeline.server 2 2 0 0 1 0.0% 100.0% 0.0% 1
org.apache.commons.pipeline.stage 26 22 4 0 17 15.000001% 100.0% 15.000001% 1
org.apache.commons.pipeline.testFramework 4 4 0 0 4 0.0% 100.0% 0.0% 1
org.apache.commons.pipeline.util 13 9 4 2 3 31.0% 60.000004% 9.0% 1
org.apache.commons.pipeline.validation 11 5 6 1 4 55.0% 80.0% 35.0% 1

Packages

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

org.apache.commons.pipeline

Afferent Couplings Efferent Couplings Abstractness Instability Distance
7 3 52.999996% 30.000002% 17.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.pipeline.Feeder
org.apache.commons.pipeline.PipelineFactory
org.apache.commons.pipeline.PipelineLifecycleJob
org.apache.commons.pipeline.Stage
org.apache.commons.pipeline.StageContext
org.apache.commons.pipeline.StageDriver
org.apache.commons.pipeline.StageDriverFactory
org.apache.commons.pipeline.StageEventListener
 org.apache.commons.pipeline.Feeder$1
org.apache.commons.pipeline.Pipeline
org.apache.commons.pipeline.Pipeline$1
org.apache.commons.pipeline.PipelineCreationException
org.apache.commons.pipeline.ProcessingException
org.apache.commons.pipeline.StageDriver$State
org.apache.commons.pipeline.StageException
 org.apache.commons.pipeline.config
org.apache.commons.pipeline.driver
org.apache.commons.pipeline.event
org.apache.commons.pipeline.listener
org.apache.commons.pipeline.stage
org.apache.commons.pipeline.testFramework
org.apache.commons.pipeline.validation
 java.lang
java.util
org.apache.commons.pipeline.validation

org.apache.commons.pipeline.config

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.pipeline.config.DigesterPipelineFactory
org.apache.commons.pipeline.config.PipelineRuleSet
org.apache.commons.pipeline.config.PipelineRuleSet$1
org.apache.commons.pipeline.config.PipelineRuleSet$PipelineAddStageRule
org.apache.commons.pipeline.config.PipelineRuleSet$PipelineDriverFactoriesRule
org.apache.commons.pipeline.config.PipelineRuleSet$PipelineFactory
org.apache.commons.pipeline.config.PipelineRuleSet$PipelineFeedObjectRule
org.apache.commons.pipeline.config.PipelineRuleSet$PipelineFeedValueRule
org.apache.commons.pipeline.config.PipelineRuleSet$SetNestedPropertyObjectRule
org.apache.commons.pipeline.config.PipelineRuleSet$StageDriverFactoryFactory
 None java.io
java.lang
java.net
java.util
org.apache.commons.beanutils
org.apache.commons.digester
org.apache.commons.pipeline
org.xml.sax

org.apache.commons.pipeline.driver

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 6 7.0% 100.0% 7.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.pipeline.driver.AbstractStageDriver
 org.apache.commons.pipeline.driver.DedicatedThreadStageDriver
org.apache.commons.pipeline.driver.DedicatedThreadStageDriver$1
org.apache.commons.pipeline.driver.DedicatedThreadStageDriver$2
org.apache.commons.pipeline.driver.DedicatedThreadStageDriver$WorkerThread
org.apache.commons.pipeline.driver.DedicatedThreadStageDriverFactory
org.apache.commons.pipeline.driver.FaultTolerance
org.apache.commons.pipeline.driver.SynchronousStageDriver
org.apache.commons.pipeline.driver.SynchronousStageDriver$1
org.apache.commons.pipeline.driver.SynchronousStageDriverFactory
org.apache.commons.pipeline.driver.ThreadPoolStageDriver
org.apache.commons.pipeline.driver.ThreadPoolStageDriver$1
org.apache.commons.pipeline.driver.ThreadPoolStageDriver$2
org.apache.commons.pipeline.driver.ThreadPoolStageDriver$LatchWorkerThread
org.apache.commons.pipeline.driver.ThreadPoolStageDriverFactory
 None java.lang
java.util
java.util.concurrent
org.apache.commons.logging
org.apache.commons.pipeline
org.apache.commons.pipeline.util

org.apache.commons.pipeline.event

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 3 0.0% 60.000004% 40.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.pipeline.event.KeyAvailableEvent
org.apache.commons.pipeline.event.ObjectProcessedEvent
org.apache.commons.pipeline.event.PipelineShutdownRequest
 org.apache.commons.pipeline.listener
org.apache.commons.pipeline.stage
 java.lang
java.util
org.apache.commons.pipeline

org.apache.commons.pipeline.listener

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 4 0.0% 100.0% 0.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.pipeline.listener.ObjectProcessedEventCounter
 None java.lang
java.util
org.apache.commons.pipeline
org.apache.commons.pipeline.event

org.apache.commons.pipeline.server

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 1 0.0% 100.0% 0.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.pipeline.server.PipelineContext
org.apache.commons.pipeline.server.PipelineService
 None java.lang

org.apache.commons.pipeline.stage

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 17 15.000001% 100.0% 15.000001%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.pipeline.stage.BaseStage
org.apache.commons.pipeline.stage.ExtendedBaseStage
org.apache.commons.pipeline.stage.ExtendedBaseStageMBean
org.apache.commons.pipeline.stage.FtpFileDownloadStage$Criterion
 org.apache.commons.pipeline.stage.AddToCollectionStage
org.apache.commons.pipeline.stage.DynamicLookupStaticMethodStage
org.apache.commons.pipeline.stage.ExtendedBaseStage$1
org.apache.commons.pipeline.stage.ExtendedBaseStage$2
org.apache.commons.pipeline.stage.ExtendedBaseStage$3
org.apache.commons.pipeline.stage.ExtendedBaseStage$4
org.apache.commons.pipeline.stage.FileFinderStage
org.apache.commons.pipeline.stage.FtpFileDownloadStage
org.apache.commons.pipeline.stage.FtpFileDownloadStage$FileDateMatchCriterion
org.apache.commons.pipeline.stage.FtpFileDownloadStage$FileNameMatchCriterion
org.apache.commons.pipeline.stage.FtpFileDownloadStage$FileSpec
org.apache.commons.pipeline.stage.FtpFileDownloadStage$FileSpec$FileType
org.apache.commons.pipeline.stage.HttpFileDownloadStage
org.apache.commons.pipeline.stage.InputStreamLineBreakStage
org.apache.commons.pipeline.stage.InvokeMethodStage
org.apache.commons.pipeline.stage.InvokeStaticMethodStage
org.apache.commons.pipeline.stage.KeyWaitBufferStage
org.apache.commons.pipeline.stage.LogStage
org.apache.commons.pipeline.stage.PipelineShutdownStage
org.apache.commons.pipeline.stage.RaiseEventStage
org.apache.commons.pipeline.stage.RaiseKeyAvailableEventStage
org.apache.commons.pipeline.stage.URLToInputStreamStage
 None java.io
java.lang
java.lang.management
java.lang.reflect
java.net
java.text
java.util
java.util.concurrent.atomic
java.util.regex
javax.management
org.apache.commons.lang.time
org.apache.commons.logging
org.apache.commons.math.stat.descriptive
org.apache.commons.net.ftp
org.apache.commons.pipeline
org.apache.commons.pipeline.event
org.apache.commons.pipeline.util

org.apache.commons.pipeline.testFramework

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 4 0.0% 100.0% 0.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.pipeline.testFramework.FaultingTestStage
org.apache.commons.pipeline.testFramework.TestFeeder
org.apache.commons.pipeline.testFramework.TestStage
org.apache.commons.pipeline.testFramework.TestStageContext
 None java.lang
java.util
org.apache.commons.logging
org.apache.commons.pipeline

org.apache.commons.pipeline.util

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 3 31.0% 60.000004% 9.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.pipeline.util.BlockingQueueFactory
org.apache.commons.pipeline.util.KeyFactory
org.apache.commons.pipeline.util.QueueFactory
org.apache.commons.pipeline.util.QueueFactory$AbstractQueueFactory
 org.apache.commons.pipeline.util.BlockingQueueFactory$ArrayBlockingQueueFactory
org.apache.commons.pipeline.util.BlockingQueueFactory$DelayQueueFactoryL
org.apache.commons.pipeline.util.BlockingQueueFactory$LinkedBlockingQueueFactory
org.apache.commons.pipeline.util.BlockingQueueFactory$PriorityBlockingQueueFactory
org.apache.commons.pipeline.util.BlockingQueueFactory$SynchronousQueueFactory
org.apache.commons.pipeline.util.KeyFactory$HashKeyFactory
org.apache.commons.pipeline.util.QueueFactory$ConcurrentLinkedQueueFactory
org.apache.commons.pipeline.util.QueueFactory$LinkedListFactory
org.apache.commons.pipeline.util.QueueFactory$PriorityQueueFactory
 org.apache.commons.pipeline.driver
org.apache.commons.pipeline.stage
 java.lang
java.util
java.util.concurrent

org.apache.commons.pipeline.validation

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 4 55.0% 80.0% 35.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.pipeline.validation.Branches
org.apache.commons.pipeline.validation.ConsumedTypes
org.apache.commons.pipeline.validation.PipelineValidator
org.apache.commons.pipeline.validation.ProducedTypes
org.apache.commons.pipeline.validation.ProducesConsumed
org.apache.commons.pipeline.validation.ProductionOnBranch
 org.apache.commons.pipeline.validation.SimplePipelineValidator
org.apache.commons.pipeline.validation.ValidationException
org.apache.commons.pipeline.validation.ValidationFailure
org.apache.commons.pipeline.validation.ValidationFailure$Type
org.apache.commons.pipeline.validation.ValidationUtils
 org.apache.commons.pipeline
 java.lang
java.lang.annotation
java.util
org.apache.commons.pipeline

Cycles

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

Package Package Dependencies
org.apache.commons.pipeline org.apache.commons.pipeline.validation
org.apache.commons.pipeline
org.apache.commons.pipeline.config org.apache.commons.pipeline
org.apache.commons.pipeline.validation
org.apache.commons.pipeline
org.apache.commons.pipeline.driver org.apache.commons.pipeline
org.apache.commons.pipeline.validation
org.apache.commons.pipeline
org.apache.commons.pipeline.event org.apache.commons.pipeline
org.apache.commons.pipeline.validation
org.apache.commons.pipeline
org.apache.commons.pipeline.listener org.apache.commons.pipeline.event
org.apache.commons.pipeline
org.apache.commons.pipeline.validation
org.apache.commons.pipeline
org.apache.commons.pipeline.stage org.apache.commons.pipeline
org.apache.commons.pipeline.validation
org.apache.commons.pipeline
org.apache.commons.pipeline.testFramework org.apache.commons.pipeline
org.apache.commons.pipeline.validation
org.apache.commons.pipeline
org.apache.commons.pipeline.validation org.apache.commons.pipeline
org.apache.commons.pipeline.validation

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.