Apache Commons logo Commons DbUtils

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.dbutils 38 34 4 2 12 11.0% 86.0% 4.0% 1
org.apache.commons.dbutils.handlers 12 10 2 0 4 17.0% 100.0% 17.0% 1
org.apache.commons.dbutils.wrappers 2 2 0 0 8 0.0% 100.0% 0.0% 1

Packages

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

org.apache.commons.dbutils

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 12 11.0% 86.0% 4.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.dbutils.AbstractQueryRunner
org.apache.commons.dbutils.BaseResultSetHandler
org.apache.commons.dbutils.ResultSetHandler
org.apache.commons.dbutils.RowProcessor
org.apache.commons.dbutils.AsyncQueryRunner
org.apache.commons.dbutils.AsyncQueryRunner$1
org.apache.commons.dbutils.AsyncQueryRunner$10
org.apache.commons.dbutils.AsyncQueryRunner$11
org.apache.commons.dbutils.AsyncQueryRunner$12
org.apache.commons.dbutils.AsyncQueryRunner$13
org.apache.commons.dbutils.AsyncQueryRunner$14
org.apache.commons.dbutils.AsyncQueryRunner$15
org.apache.commons.dbutils.AsyncQueryRunner$16
org.apache.commons.dbutils.AsyncQueryRunner$17
org.apache.commons.dbutils.AsyncQueryRunner$18
org.apache.commons.dbutils.AsyncQueryRunner$2
org.apache.commons.dbutils.AsyncQueryRunner$3
org.apache.commons.dbutils.AsyncQueryRunner$4
org.apache.commons.dbutils.AsyncQueryRunner$5
org.apache.commons.dbutils.AsyncQueryRunner$6
org.apache.commons.dbutils.AsyncQueryRunner$7
org.apache.commons.dbutils.AsyncQueryRunner$8
org.apache.commons.dbutils.AsyncQueryRunner$9
org.apache.commons.dbutils.AsyncQueryRunner$BatchCallableStatement
org.apache.commons.dbutils.AsyncQueryRunner$QueryCallableStatement
org.apache.commons.dbutils.AsyncQueryRunner$UpdateCallableStatement
org.apache.commons.dbutils.BasicRowProcessor
org.apache.commons.dbutils.BasicRowProcessor$1
org.apache.commons.dbutils.BasicRowProcessor$CaseInsensitiveHashMap
org.apache.commons.dbutils.BeanProcessor
org.apache.commons.dbutils.DbUtils
org.apache.commons.dbutils.DbUtils$DriverProxy
org.apache.commons.dbutils.GenerousBeanProcessor
org.apache.commons.dbutils.ProxyFactory
org.apache.commons.dbutils.QueryLoader
org.apache.commons.dbutils.QueryRunner
org.apache.commons.dbutils.ResultSetIterator
org.apache.commons.dbutils.ResultSetIterator$1
org.apache.commons.dbutils.handlers
org.apache.commons.dbutils.wrappers
java.beans
java.io
java.lang
java.lang.reflect
java.math
java.net
java.sql
java.util
java.util.concurrent
java.util.logging
java.util.regex
javax.sql

org.apache.commons.dbutils.handlers

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 4 17.0% 100.0% 17.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.commons.dbutils.handlers.AbstractKeyedHandler
org.apache.commons.dbutils.handlers.AbstractListHandler
org.apache.commons.dbutils.handlers.ArrayHandler
org.apache.commons.dbutils.handlers.ArrayListHandler
org.apache.commons.dbutils.handlers.BeanHandler
org.apache.commons.dbutils.handlers.BeanListHandler
org.apache.commons.dbutils.handlers.BeanMapHandler
org.apache.commons.dbutils.handlers.ColumnListHandler
org.apache.commons.dbutils.handlers.KeyedHandler
org.apache.commons.dbutils.handlers.MapHandler
org.apache.commons.dbutils.handlers.MapListHandler
org.apache.commons.dbutils.handlers.ScalarHandler
None java.lang
java.sql
java.util
org.apache.commons.dbutils

org.apache.commons.dbutils.wrappers

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.dbutils.wrappers.SqlNullCheckedResultSet
org.apache.commons.dbutils.wrappers.StringTrimmedResultSet
None java.io
java.lang
java.lang.reflect
java.math
java.net
java.sql
java.util
org.apache.commons.dbutils

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.