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 ]

PackageTCCCACCaCeAIDV
org.apache.commons.transaction.file13940831.0%100.0%31.0%1
org.apache.commons.transaction.locking12842333.0%60.000004%7.0%1
org.apache.commons.transaction.memory131120615.000001%100.0%15.000001%1
org.apache.commons.transaction.util7613414.0%57.0%29.0%1

Packages

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

org.apache.commons.transaction.file

Afferent CouplingsEfferent CouplingsAbstractnessInstabilityDistance
0831.0%100.0%31.0%
Abstract ClassesConcrete ClassesUsed by PackagesUses Packages
org.apache.commons.transaction.file.ResourceIdToPathMapper
org.apache.commons.transaction.file.ResourceManager
org.apache.commons.transaction.file.ResourceManagerErrorCodes
org.apache.commons.transaction.file.TransactionIdToPathMapper
org.apache.commons.transaction.file.FileResourceManager
org.apache.commons.transaction.file.FileResourceManager$InputStreamWrapper
org.apache.commons.transaction.file.FileResourceManager$TransactionContext
org.apache.commons.transaction.file.FileSequence
org.apache.commons.transaction.file.NoOpTransactionIdToPathMapper
org.apache.commons.transaction.file.ResourceManagerException
org.apache.commons.transaction.file.ResourceManagerSystemException
org.apache.commons.transaction.file.URLEncodeIdMapper
org.apache.commons.transaction.file.VirtualAdminCommandsFileResourceManager
Nonejava.io
java.lang
java.net
java.util
javax.transaction
org.apache.commons.codec.binary
org.apache.commons.transaction.locking
org.apache.commons.transaction.util

org.apache.commons.transaction.locking

Afferent CouplingsEfferent CouplingsAbstractnessInstabilityDistance
2333.0%60.000004%7.0%
Abstract ClassesConcrete ClassesUsed by PackagesUses Packages
org.apache.commons.transaction.locking.LockManager
org.apache.commons.transaction.locking.LockManager2
org.apache.commons.transaction.locking.MultiLevelLock
org.apache.commons.transaction.locking.MultiLevelLock2
org.apache.commons.transaction.locking.GenericLock
org.apache.commons.transaction.locking.GenericLock$LockOwner
org.apache.commons.transaction.locking.GenericLockManager
org.apache.commons.transaction.locking.LockException
org.apache.commons.transaction.locking.ReadWriteLock
org.apache.commons.transaction.locking.ReadWriteLockManager
org.apache.commons.transaction.locking.ReadWriteUpgradeLock
org.apache.commons.transaction.locking.ReadWriteUpgradeLockManager
org.apache.commons.transaction.file
org.apache.commons.transaction.memory
java.lang
java.util
org.apache.commons.transaction.util

org.apache.commons.transaction.memory

Afferent CouplingsEfferent CouplingsAbstractnessInstabilityDistance
0615.000001%100.0%15.000001%
Abstract ClassesConcrete ClassesUsed by PackagesUses Packages
org.apache.commons.transaction.memory.MapFactory
org.apache.commons.transaction.memory.SetFactory
org.apache.commons.transaction.memory.ConflictException
org.apache.commons.transaction.memory.HashMapFactory
org.apache.commons.transaction.memory.HashSetFactory
org.apache.commons.transaction.memory.LockException
org.apache.commons.transaction.memory.OptimisticMapWrapper
org.apache.commons.transaction.memory.OptimisticMapWrapper$CopyingTxContext
org.apache.commons.transaction.memory.PessimisticMapWrapper
org.apache.commons.transaction.memory.PessimisticMapWrapper$LockingTxContext
org.apache.commons.transaction.memory.TransactionalMapWrapper
org.apache.commons.transaction.memory.TransactionalMapWrapper$HashEntry
org.apache.commons.transaction.memory.TransactionalMapWrapper$TxContext
Nonejava.io
java.lang
java.util
javax.transaction
org.apache.commons.transaction.locking
org.apache.commons.transaction.util

org.apache.commons.transaction.util

Afferent CouplingsEfferent CouplingsAbstractnessInstabilityDistance
3414.0%57.0%29.0%
Abstract ClassesConcrete ClassesUsed by PackagesUses Packages
org.apache.commons.transaction.util.LoggerFacade
org.apache.commons.transaction.util.CommonsLoggingLogger
org.apache.commons.transaction.util.FileHelper
org.apache.commons.transaction.util.Log4jLogger
org.apache.commons.transaction.util.PrintWriterLogger
org.apache.commons.transaction.util.RendezvousBarrier
org.apache.commons.transaction.util.TurnBarrier
org.apache.commons.transaction.file
org.apache.commons.transaction.locking
org.apache.commons.transaction.memory
java.io
java.lang
org.apache.commons.logging
org.apache.log4j

Cycles

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

There are no cyclic dependencies.

Explanation

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

The following explanations are for quick reference and are lifted directly from the original JDepend documentation.

TermDescription
Number of ClassesThe number of concrete and abstract classes (and interfaces) in the package is an indicator of the extensibility of the package.
Afferent CouplingsThe number of other packages that depend upon classes within the package is an indicator of the package's responsibility.
Efferent CouplingsThe number of other packages that the classes in the package depend upon is an indicator of the package's independence.
AbstractnessThe 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.
InstabilityThe 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.
DistanceThe 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.
CyclesPackages 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.