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.dbcp 28 27 1 3 14 4.0% 82.0% 14.0% 1
org.apache.commons.dbcp.cpdsadapter 5 5 0 0 10 0.0% 100.0% 0.0% 1
org.apache.commons.dbcp.datasources 12 9 3 0 10 25.0% 100.0% 25.0% 1
org.apache.commons.dbcp.managed 14 12 2 0 9 14.0% 100.0% 14.0% 1
org.apache.commons.jocl 3 3 0 1 6 0.0% 86.0% 14.0% 1

Packages

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

org.apache.commons.dbcp

Afferent Couplings Efferent Couplings Abstractness Instability Distance
3 14 4.0% 82.0% 14.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.dbcp.ConnectionFactory
 org.apache.commons.dbcp.AbandonedConfig
org.apache.commons.dbcp.AbandonedObjectPool
org.apache.commons.dbcp.AbandonedTrace
org.apache.commons.dbcp.AbandonedTrace$AbandonedObjectException
org.apache.commons.dbcp.BasicDataSource
org.apache.commons.dbcp.BasicDataSourceFactory
org.apache.commons.dbcp.DataSourceConnectionFactory
org.apache.commons.dbcp.DbcpException
org.apache.commons.dbcp.DelegatingCallableStatement
org.apache.commons.dbcp.DelegatingConnection
org.apache.commons.dbcp.DelegatingDatabaseMetaData
org.apache.commons.dbcp.DelegatingPreparedStatement
org.apache.commons.dbcp.DelegatingResultSet
org.apache.commons.dbcp.DelegatingStatement
org.apache.commons.dbcp.DriverConnectionFactory
org.apache.commons.dbcp.DriverManagerConnectionFactory
org.apache.commons.dbcp.PoolableCallableStatement
org.apache.commons.dbcp.PoolableConnection
org.apache.commons.dbcp.PoolableConnectionFactory
org.apache.commons.dbcp.PoolablePreparedStatement
org.apache.commons.dbcp.PoolingConnection
org.apache.commons.dbcp.PoolingConnection$PStmtKey
org.apache.commons.dbcp.PoolingDataSource
org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper
org.apache.commons.dbcp.PoolingDriver
org.apache.commons.dbcp.PoolingDriver$PoolGuardConnectionWrapper
org.apache.commons.dbcp.SQLNestedException
 org.apache.commons.dbcp.cpdsadapter
org.apache.commons.dbcp.datasources
org.apache.commons.dbcp.managed
 java.io
java.lang
java.math
java.net
java.sql
java.text
java.util
javax.naming
javax.naming.spi
javax.sql
org.apache.commons.jocl
org.apache.commons.pool
org.apache.commons.pool.impl
org.xml.sax

org.apache.commons.dbcp.cpdsadapter

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 10 0.0% 100.0% 0.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.dbcp.cpdsadapter.ConnectionImpl
org.apache.commons.dbcp.cpdsadapter.DriverAdapterCPDS
org.apache.commons.dbcp.cpdsadapter.PoolablePreparedStatementStub
org.apache.commons.dbcp.cpdsadapter.PooledConnectionImpl
org.apache.commons.dbcp.cpdsadapter.PooledConnectionImpl$PStmtKey
 None java.io
java.lang
java.sql
java.util
javax.naming
javax.naming.spi
javax.sql
org.apache.commons.dbcp
org.apache.commons.pool
org.apache.commons.pool.impl

org.apache.commons.dbcp.datasources

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 10 25.0% 100.0% 25.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.dbcp.datasources.InstanceKeyDataSource
org.apache.commons.dbcp.datasources.InstanceKeyObjectFactory
org.apache.commons.dbcp.datasources.PooledConnectionManager
 org.apache.commons.dbcp.datasources.CPDSConnectionFactory
org.apache.commons.dbcp.datasources.KeyedCPDSConnectionFactory
org.apache.commons.dbcp.datasources.PerUserPoolDataSource
org.apache.commons.dbcp.datasources.PerUserPoolDataSourceFactory
org.apache.commons.dbcp.datasources.PoolKey
org.apache.commons.dbcp.datasources.PooledConnectionAndInfo
org.apache.commons.dbcp.datasources.SharedPoolDataSource
org.apache.commons.dbcp.datasources.SharedPoolDataSourceFactory
org.apache.commons.dbcp.datasources.UserPassKey
 None java.io
java.lang
java.sql
java.util
javax.naming
javax.naming.spi
javax.sql
org.apache.commons.dbcp
org.apache.commons.pool
org.apache.commons.pool.impl

org.apache.commons.dbcp.managed

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 9 14.0% 100.0% 14.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.dbcp.managed.TransactionContextListener
org.apache.commons.dbcp.managed.XAConnectionFactory
 org.apache.commons.dbcp.managed.BasicManagedDataSource
org.apache.commons.dbcp.managed.DataSourceXAConnectionFactory
org.apache.commons.dbcp.managed.LocalXAConnectionFactory
org.apache.commons.dbcp.managed.LocalXAConnectionFactory$LocalXAResource
org.apache.commons.dbcp.managed.ManagedConnection
org.apache.commons.dbcp.managed.ManagedConnection$CompletionListener
org.apache.commons.dbcp.managed.ManagedDataSource
org.apache.commons.dbcp.managed.PoolableManagedConnection
org.apache.commons.dbcp.managed.PoolableManagedConnectionFactory
org.apache.commons.dbcp.managed.TransactionContext
org.apache.commons.dbcp.managed.TransactionContext$1
org.apache.commons.dbcp.managed.TransactionRegistry
 None java.lang
java.lang.ref
java.sql
java.util
javax.sql
javax.transaction
javax.transaction.xa
org.apache.commons.dbcp
org.apache.commons.pool

org.apache.commons.jocl

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 6 0.0% 86.0% 14.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.commons.jocl.ConstructorUtil
org.apache.commons.jocl.JOCLContentHandler
org.apache.commons.jocl.JOCLContentHandler$ConstructorDetails
 org.apache.commons.dbcp
 java.io
java.lang
java.lang.reflect
java.util
org.xml.sax
org.xml.sax.helpers

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.

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.