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.distsql.parser.autogen 89 87 2 2 6 2.0% 75.0% 23.0% 1
org.apache.shardingsphere.distsql.parser.core.featured 2 2 0 1 12 0.0% 92.0% 8.0% 1
org.apache.shardingsphere.distsql.parser.core.kernel 3 3 0 1 9 0.0% 90.0% 10.0% 1
org.apache.shardingsphere.distsql.parser.core.utility 4 4 0 1 12 0.0% 92.0% 8.0% 1
org.apache.shardingsphere.distsql.parser.engine.api 1 1 0 0 7 0.0% 100.0% 0.0% 1
org.apache.shardingsphere.distsql.parser.engine.spi 1 0 1 1 1 100.0% 50.0% 50.0% 1

Packages

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

org.apache.shardingsphere.distsql.parser.autogen

Afferent Couplings Efferent Couplings Abstractness Instability Distance
2 6 2.0% 75.0% 23.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementVisitor
org.apache.shardingsphere.distsql.parser.autogen.UtilityDistSQLStatementVisitor
 org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementBaseVisitor
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementLexer
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$AlgorithmDefinitionContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$AlgorithmTypeNameContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$AlterComputeNodeContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$AlterStorageUnitContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$CheckPrivilegesContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ConfPathContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ConvertYamlConfigurationContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$DatabaseNameContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$DbNameContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$DisableComputeNodeContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$EnableComputeNodeContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ExecuteContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ExportDatabaseConfigurationContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ExportMetaDataContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ExportStorageNodesContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$FilePathContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$FromSegmentContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$HostnameContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$IfExistsContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$IfNotExistsContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$IgnoreBroadcastTablesContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$IgnoreSingleAndBroadcastTablesContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$IgnoreSingleTablesContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$IgnoreTablesContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ImportDatabaseConfigurationContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ImportMetaDataContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$InstanceIdContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$LabelComputeNodeContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$LabelContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$LikePatternContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$LiteralContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$LockClusterContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$LockStrategyContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$MetaDataValueContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$MetadataContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$PasswordContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$PluginClassContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$PortContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$PrivilegeTypeContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$PropertiesContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$PropertiesDefinitionContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$PropertyContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$RefreshDatabaseMetadataContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$RefreshScopeContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$RefreshTableMetadataContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$RegisterStorageUnitContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ResourceNameContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$SchemaNameContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$SetDistVariableContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ShowComputeNodeInfoContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ShowComputeNodeModeContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ShowComputeNodesContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ShowDistVariableContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ShowDistVariablesContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ShowKeyGenerateAlgorithmPluginsContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ShowLikeContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ShowLoadBalanceAlgorithmPluginsContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ShowLogicalTablesContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ShowPluginImplementationsContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ShowRulesUsedStorageUnitContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ShowStorageUnitsContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$ShowTableMetadataContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$SimpleSourceContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$StorageUnitDefinitionContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$StorageUnitNameContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$StorageUnitsDefinitionContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$TableNameContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$UnlabelComputeNodeContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$UnlockClusterContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$UnregisterStorageUnitContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$UrlContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$UrlSourceContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$UserContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$VariableNameContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$VariableValueContext
org.apache.shardingsphere.distsql.parser.autogen.KernelDistSQLStatementParser$VariableValuesContext
org.apache.shardingsphere.distsql.parser.autogen.UtilityDistSQLStatementBaseVisitor
org.apache.shardingsphere.distsql.parser.autogen.UtilityDistSQLStatementLexer
org.apache.shardingsphere.distsql.parser.autogen.UtilityDistSQLStatementParser
org.apache.shardingsphere.distsql.parser.autogen.UtilityDistSQLStatementParser$ExecuteContext
org.apache.shardingsphere.distsql.parser.autogen.UtilityDistSQLStatementParser$FormatSQLContext
org.apache.shardingsphere.distsql.parser.autogen.UtilityDistSQLStatementParser$ParseSQLContext
org.apache.shardingsphere.distsql.parser.autogen.UtilityDistSQLStatementParser$PreviewSQLContext
org.apache.shardingsphere.distsql.parser.autogen.UtilityDistSQLStatementParser$SqlContext
 org.apache.shardingsphere.distsql.parser.core.kernel
org.apache.shardingsphere.distsql.parser.core.utility
 java.lang
java.util
org.antlr.v4.runtime
org.antlr.v4.runtime.atn
org.antlr.v4.runtime.dfa
org.antlr.v4.runtime.tree

org.apache.shardingsphere.distsql.parser.core.featured

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 12 0.0% 92.0% 8.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.shardingsphere.distsql.parser.core.featured.DistSQLParserEngine
org.apache.shardingsphere.distsql.parser.core.featured.FeaturedDistSQLParseASTNode
 org.apache.shardingsphere.distsql.parser.engine.api
 java.lang
java.lang.reflect
java.util
org.antlr.v4.runtime.misc
org.antlr.v4.runtime.tree
org.apache.shardingsphere.distsql.parser.engine.spi
org.apache.shardingsphere.infra.spi
org.apache.shardingsphere.sql.parser.api.parser
org.apache.shardingsphere.sql.parser.api.visitor
org.apache.shardingsphere.sql.parser.core
org.apache.shardingsphere.sql.parser.exception
org.apache.shardingsphere.sql.parser.statement.core.statement

org.apache.shardingsphere.distsql.parser.core.kernel

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 9 0.0% 90.0% 10.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.shardingsphere.distsql.parser.core.kernel.KernelDistSQLLexer
org.apache.shardingsphere.distsql.parser.core.kernel.KernelDistSQLParser
org.apache.shardingsphere.distsql.parser.core.kernel.KernelDistSQLStatementParserEngine
 org.apache.shardingsphere.distsql.parser.engine.api
 java.lang
org.antlr.v4.runtime
org.antlr.v4.runtime.tree
org.apache.shardingsphere.distsql.parser.autogen
org.apache.shardingsphere.sql.parser.api
org.apache.shardingsphere.sql.parser.api.parser
org.apache.shardingsphere.sql.parser.core
org.apache.shardingsphere.sql.parser.exception
org.apache.shardingsphere.sql.parser.statement.core.statement

org.apache.shardingsphere.distsql.parser.core.utility

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 12 0.0% 92.0% 8.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.shardingsphere.distsql.parser.core.utility.UtilityDistSQLLexer
org.apache.shardingsphere.distsql.parser.core.utility.UtilityDistSQLParser
org.apache.shardingsphere.distsql.parser.core.utility.UtilityDistSQLStatementParserEngine
org.apache.shardingsphere.distsql.parser.core.utility.UtilityDistSQLStatementVisitor
 org.apache.shardingsphere.distsql.parser.engine.api
 java.lang
org.antlr.v4.runtime
org.antlr.v4.runtime.misc
org.antlr.v4.runtime.tree
org.apache.shardingsphere.distsql.parser.autogen
org.apache.shardingsphere.distsql.statement.rul.sql
org.apache.shardingsphere.sql.parser.api
org.apache.shardingsphere.sql.parser.api.parser
org.apache.shardingsphere.sql.parser.api.visitor
org.apache.shardingsphere.sql.parser.core
org.apache.shardingsphere.sql.parser.exception
org.apache.shardingsphere.sql.parser.statement.core.statement

org.apache.shardingsphere.distsql.parser.engine.api

Afferent Couplings Efferent Couplings Abstractness Instability Distance
0 7 0.0% 100.0% 0.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
None org.apache.shardingsphere.distsql.parser.engine.api.DistSQLStatementParserEngine
 None java.lang
org.antlr.v4.runtime.misc
org.apache.shardingsphere.distsql.parser.core.featured
org.apache.shardingsphere.distsql.parser.core.kernel
org.apache.shardingsphere.distsql.parser.core.utility
org.apache.shardingsphere.sql.parser.exception
org.apache.shardingsphere.sql.parser.statement.core.statement

org.apache.shardingsphere.distsql.parser.engine.spi

Afferent Couplings Efferent Couplings Abstractness Instability Distance
1 1 100.0% 50.0% 50.0%
Abstract Classes Concrete Classes Used by Packages Uses Packages
org.apache.shardingsphere.distsql.parser.engine.spi.DistSQLParserFacade
 None org.apache.shardingsphere.distsql.parser.core.featured
 java.lang

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.