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.shardingsphere.data.pipeline.cdc.distsql.statement 1 0 1 2 2 100.0% 50.0% 50.0% 1
org.apache.shardingsphere.data.pipeline.cdc.distsql.statement.queryable 4 3 1 0 3 25.0% 100.0% 25.0% 1
org.apache.shardingsphere.data.pipeline.cdc.distsql.statement.updatable 2 1 1 0 3 50.0% 100.0% 50.0% 1
org.apache.shardingsphere.data.pipeline.distsql.statement 1 0 1 4 2 100.0% 33.0% 33.0% 1
org.apache.shardingsphere.data.pipeline.distsql.statement.queryable 1 0 1 2 2 100.0% 50.0% 50.0% 1
org.apache.shardingsphere.data.pipeline.distsql.statement.updatable 2 1 1 2 5 50.0% 71.0% 21.0% 1
org.apache.shardingsphere.data.pipeline.migration.distsql.statement 1 0 1 2 2 100.0% 50.0% 50.0% 1
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.pojo 1 1 0 0 2 0.0% 100.0% 0.0% 1
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.queryable 6 5 1 0 3 17.0% 100.0% 17.0% 1
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable 12 11 1 1 5 8.0% 83.0% 8.0% 1

Packages

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

org.apache.shardingsphere.data.pipeline.cdc.distsql.statement

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 2 100.0% 50.0% 50.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.shardingsphere.data.pipeline.cdc.distsql.statement.CDCRALStatement
 None org.apache.shardingsphere.data.pipeline.cdc.distsql.statement.queryable
org.apache.shardingsphere.data.pipeline.cdc.distsql.statement.updatable
 java.lang
org.apache.shardingsphere.data.pipeline.distsql.statement

org.apache.shardingsphere.data.pipeline.cdc.distsql.statement.queryable

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 3 25.0% 100.0% 25.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.shardingsphere.data.pipeline.cdc.distsql.statement.queryable.QueryableCDCRALStatement
 org.apache.shardingsphere.data.pipeline.cdc.distsql.statement.queryable.ShowStreamingListStatement
org.apache.shardingsphere.data.pipeline.cdc.distsql.statement.queryable.ShowStreamingRuleStatement
org.apache.shardingsphere.data.pipeline.cdc.distsql.statement.queryable.ShowStreamingStatusStatement
 None java.lang
org.apache.shardingsphere.data.pipeline.cdc.distsql.statement
org.apache.shardingsphere.data.pipeline.distsql.statement.queryable

org.apache.shardingsphere.data.pipeline.cdc.distsql.statement.updatable

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 3 50.0% 100.0% 50.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.shardingsphere.data.pipeline.cdc.distsql.statement.updatable.UpdatableCDCRALStatement
 org.apache.shardingsphere.data.pipeline.cdc.distsql.statement.updatable.DropStreamingStatement
 None java.lang
org.apache.shardingsphere.data.pipeline.cdc.distsql.statement
org.apache.shardingsphere.data.pipeline.distsql.statement.updatable

org.apache.shardingsphere.data.pipeline.distsql.statement

Afferent Couplings Efferent Couplings Abstractness Instability Distance
4 2 100.0% 33.0% 33.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.shardingsphere.data.pipeline.distsql.statement.PipelineRALStatement
 None org.apache.shardingsphere.data.pipeline.cdc.distsql.statement
org.apache.shardingsphere.data.pipeline.distsql.statement.queryable
org.apache.shardingsphere.data.pipeline.distsql.statement.updatable
org.apache.shardingsphere.data.pipeline.migration.distsql.statement
 java.lang
org.apache.shardingsphere.distsql.statement.ral

org.apache.shardingsphere.data.pipeline.distsql.statement.queryable

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 2 100.0% 50.0% 50.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.shardingsphere.data.pipeline.distsql.statement.queryable.QueryablePipelineRALStatement
 None org.apache.shardingsphere.data.pipeline.cdc.distsql.statement.queryable
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.queryable
 org.apache.shardingsphere.data.pipeline.distsql.statement
org.apache.shardingsphere.distsql.statement.ral.queryable

org.apache.shardingsphere.data.pipeline.distsql.statement.updatable

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 5 50.0% 71.0% 21.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.shardingsphere.data.pipeline.distsql.statement.updatable.UpdatablePipelineRALStatement
 org.apache.shardingsphere.data.pipeline.distsql.statement.updatable.AlterTransmissionRuleStatement
 org.apache.shardingsphere.data.pipeline.cdc.distsql.statement.updatable
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable
 java.lang
org.apache.shardingsphere.data.pipeline.distsql.statement
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable
org.apache.shardingsphere.distsql.segment
org.apache.shardingsphere.distsql.statement.ral.updatable

org.apache.shardingsphere.data.pipeline.migration.distsql.statement

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 2 100.0% 50.0% 50.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.MigrationRALStatement
 None org.apache.shardingsphere.data.pipeline.migration.distsql.statement.queryable
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable
 java.lang
org.apache.shardingsphere.data.pipeline.distsql.statement

org.apache.shardingsphere.data.pipeline.migration.distsql.statement.pojo

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 2 0.0% 100.0% 0.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.shardingsphere.data.pipeline.migration.distsql.statement.pojo.SourceTargetEntry
 None java.lang
org.apache.shardingsphere.infra.datanode

org.apache.shardingsphere.data.pipeline.migration.distsql.statement.queryable

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 3 17.0% 100.0% 17.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.queryable.QueryableMigrationRALStatement
 org.apache.shardingsphere.data.pipeline.migration.distsql.statement.queryable.ShowMigrationCheckStatusStatement
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.queryable.ShowMigrationListStatement
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.queryable.ShowMigrationRuleStatement
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.queryable.ShowMigrationSourceStorageUnitsStatement
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.queryable.ShowMigrationStatusStatement
 None java.lang
org.apache.shardingsphere.data.pipeline.distsql.statement.queryable
org.apache.shardingsphere.data.pipeline.migration.distsql.statement

org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 5 8.0% 83.0% 8.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable.UpdatableMigrationRALStatement
 org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable.CheckMigrationStatement
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable.CommitMigrationStatement
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable.DropMigrationCheckStatement
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable.MigrateTableStatement
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable.RegisterMigrationSourceStorageUnitStatement
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable.RollbackMigrationStatement
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable.StartMigrationCheckStatement
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable.StartMigrationStatement
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable.StopMigrationCheckStatement
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable.StopMigrationStatement
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable.UnregisterMigrationSourceStorageUnitStatement
 org.apache.shardingsphere.data.pipeline.distsql.statement.updatable
 java.lang
java.util
org.apache.shardingsphere.data.pipeline.distsql.statement.updatable
org.apache.shardingsphere.data.pipeline.migration.distsql.statement
org.apache.shardingsphere.distsql.segment

Cycles

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

Package Package Dependencies
org.apache.shardingsphere.data.pipeline.cdc.distsql.statement.updatable org.apache.shardingsphere.data.pipeline.distsql.statement.updatable
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable
org.apache.shardingsphere.data.pipeline.distsql.statement.updatable
org.apache.shardingsphere.data.pipeline.distsql.statement.updatable org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable
org.apache.shardingsphere.data.pipeline.distsql.statement.updatable
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable org.apache.shardingsphere.data.pipeline.distsql.statement.updatable
org.apache.shardingsphere.data.pipeline.migration.distsql.statement.updatable

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.