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

Packages

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

org.apache.shardingsphere.proxy.frontend.postgresql

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 0 13 0.0% 100.0% 0.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages None org.apache.shardingsphere.proxy.frontend.postgresql.PostgreSQLFrontendEngine
None java.lang
org.apache.shardingsphere.database.exception.core.exception.transaction
org.apache.shardingsphere.database.protocol.codec
org.apache.shardingsphere.database.protocol.postgresql.codec
org.apache.shardingsphere.infra.session.connection
org.apache.shardingsphere.infra.session.connection.transaction
org.apache.shardingsphere.proxy.backend.session
org.apache.shardingsphere.proxy.backend.session.transaction
org.apache.shardingsphere.proxy.frontend.authentication
org.apache.shardingsphere.proxy.frontend.command
org.apache.shardingsphere.proxy.frontend.postgresql.authentication
org.apache.shardingsphere.proxy.frontend.postgresql.command
org.apache.shardingsphere.proxy.frontend.spi

org.apache.shardingsphere.proxy.frontend.postgresql.authentication.authenticator

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 1 3 50.0% 75.0% 25.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages org.apache.shardingsphere.proxy.frontend.postgresql.authentication.authenticator.PostgreSQLAuthenticator
org.apache.shardingsphere.proxy.frontend.postgresql.authentication.authenticator.PostgreSQLAuthenticatorType
org.apache.shardingsphere.proxy.frontend.postgresql.authentication.authenticator.impl
java.lang
org.apache.shardingsphere.authentication
org.apache.shardingsphere.proxy.frontend.postgresql.authentication.authenticator.impl

org.apache.shardingsphere.proxy.frontend.postgresql.authentication.authenticator.impl

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 1 8 0.0% 89.0% 11.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages None org.apache.shardingsphere.proxy.frontend.postgresql.authentication.authenticator.impl.PostgreSQLMD5PasswordAuthenticator
org.apache.shardingsphere.proxy.frontend.postgresql.authentication.authenticator.impl.PostgreSQLPasswordAuthenticator
org.apache.shardingsphere.proxy.frontend.postgresql.authentication.authenticator
com.google.common.base
java.lang
java.security
org.apache.commons.codec.binary
org.apache.commons.codec.digest
org.apache.shardingsphere.database.protocol.postgresql.constant
org.apache.shardingsphere.infra.metadata.user
org.apache.shardingsphere.proxy.frontend.postgresql.authentication.authenticator

org.apache.shardingsphere.proxy.frontend.postgresql.command

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 4 47 0.0% 92.0% 8.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages None org.apache.shardingsphere.proxy.frontend.postgresql.command.PortalContext
org.apache.shardingsphere.proxy.frontend.postgresql.command.PostgreSQLCommandExecuteEngine
org.apache.shardingsphere.proxy.frontend.postgresql.command.PostgreSQLCommandExecutorFactory
org.apache.shardingsphere.proxy.frontend.postgresql.command.PostgreSQLCommandExecutorFactory$1
org.apache.shardingsphere.proxy.frontend.postgresql
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.bind
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.close
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.execute
com.google.common.base
io.netty.buffer
io.netty.channel
java.lang
java.sql
java.util
org.apache.shardingsphere.database.protocol.packet
org.apache.shardingsphere.database.protocol.packet.command
org.apache.shardingsphere.database.protocol.packet.sql
org.apache.shardingsphere.database.protocol.payload
org.apache.shardingsphere.database.protocol.postgresql.packet
org.apache.shardingsphere.database.protocol.postgresql.packet.command
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query.extended
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query.extended.bind
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query.extended.close
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query.extended.describe
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query.extended.execute
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query.extended.parse
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query.simple
org.apache.shardingsphere.database.protocol.postgresql.packet.generic
org.apache.shardingsphere.database.protocol.postgresql.payload
org.apache.shardingsphere.database.protocol.postgresql.type
org.apache.shardingsphere.infra.config.props
org.apache.shardingsphere.infra.metadata
org.apache.shardingsphere.mode.manager
org.apache.shardingsphere.mode.metadata
org.apache.shardingsphere.proxy.backend.connector
org.apache.shardingsphere.proxy.backend.connector.jdbc.connection
org.apache.shardingsphere.proxy.backend.context
org.apache.shardingsphere.proxy.backend.session
org.apache.shardingsphere.proxy.backend.session.transaction
org.apache.shardingsphere.proxy.frontend.command
org.apache.shardingsphere.proxy.frontend.command.executor
org.apache.shardingsphere.proxy.frontend.postgresql.command.generic
org.apache.shardingsphere.proxy.frontend.postgresql.command.query
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.bind
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.close
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.describe
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.execute
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.flush
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.parse
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.sync
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.simple
org.apache.shardingsphere.proxy.frontend.postgresql.err
org.slf4j

org.apache.shardingsphere.proxy.frontend.postgresql.command.generic

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 1 6 0.0% 86.0% 14.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages None org.apache.shardingsphere.proxy.frontend.postgresql.command.generic.PostgreSQLComTerminationExecutor
org.apache.shardingsphere.proxy.frontend.postgresql.command.generic.PostgreSQLUnsupportedCommandExecutor
org.apache.shardingsphere.proxy.frontend.postgresql.command
java.lang
java.util
org.apache.shardingsphere.database.exception.postgresql.vendor
org.apache.shardingsphere.database.protocol.postgresql.constant
org.apache.shardingsphere.database.protocol.postgresql.packet.generic
org.apache.shardingsphere.proxy.frontend.command.executor

org.apache.shardingsphere.proxy.frontend.postgresql.command.query

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 1 2 0.0% 67.0% 33.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages None org.apache.shardingsphere.proxy.frontend.postgresql.command.query.PostgreSQLCommand$CachedResult
org.apache.shardingsphere.proxy.frontend.postgresql.command
java.lang
java.util

org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 3 15 0.0% 83.0% 17.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages None org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.PostgreSQLAggregatedCommandExecutor
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.PostgreSQLBatchedStatementsExecutor$1
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.PostgreSQLBatchedStatementsExecutor$BatchedStatementsJDBCExecutorCallback
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.PostgreSQLServerPreparedStatement
org.apache.shardingsphere.proxy.frontend.postgresql.command
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.bind
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.execute
java.lang
java.sql
java.util
org.apache.shardingsphere.database.connector.core.type
org.apache.shardingsphere.database.protocol.postgresql.packet
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query.extended
org.apache.shardingsphere.infra.binder.context.statement
org.apache.shardingsphere.infra.executor.sql.execute.engine
org.apache.shardingsphere.infra.executor.sql.execute.engine.driver.jdbc
org.apache.shardingsphere.infra.hint
org.apache.shardingsphere.infra.metadata.database.resource
org.apache.shardingsphere.proxy.backend.session
org.apache.shardingsphere.proxy.frontend.command.executor
org.apache.shardingsphere.sql.parser.statement.core.statement

org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.bind

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 1 8 0.0% 89.0% 11.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages None org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.bind.PostgreSQLComBindExecutor
org.apache.shardingsphere.proxy.frontend.postgresql.command
java.lang
java.sql
java.util
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query.extended.bind
org.apache.shardingsphere.proxy.backend.session
org.apache.shardingsphere.proxy.frontend.command.executor
org.apache.shardingsphere.proxy.frontend.postgresql.command
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended

org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.close

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 1 8 0.0% 89.0% 11.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages None org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.close.PostgreSQLComCloseExecutor
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.close.PostgreSQLComCloseExecutor$1
org.apache.shardingsphere.proxy.frontend.postgresql.command
java.lang
java.sql
java.util
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query.extended.close
org.apache.shardingsphere.infra.exception.generic
org.apache.shardingsphere.proxy.backend.session
org.apache.shardingsphere.proxy.frontend.command.executor
org.apache.shardingsphere.proxy.frontend.postgresql.command

org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.execute

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 1 8 0.0% 89.0% 11.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages None org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.execute.PostgreSQLComExecuteExecutor
org.apache.shardingsphere.proxy.frontend.postgresql.command
java.lang
java.sql
java.util
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query.extended.execute
org.apache.shardingsphere.proxy.frontend.command.executor
org.apache.shardingsphere.proxy.frontend.postgresql.command
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended
org.apache.shardingsphere.sql.parser.statement.core.statement.type.tcl

org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.flush

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 1 3 0.0% 75.0% 25.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages None org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.flush.PostgreSQLComFlushExecutor
org.apache.shardingsphere.proxy.frontend.postgresql.command
java.lang
java.util
org.apache.shardingsphere.proxy.frontend.command.executor

org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.sync

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 1 7 0.0% 88.0% 12.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages None org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.sync.PostgreSQLComSyncExecutor
org.apache.shardingsphere.proxy.frontend.postgresql.command
java.lang
java.util
org.apache.shardingsphere.database.protocol.packet
org.apache.shardingsphere.database.protocol.postgresql.packet.generic
org.apache.shardingsphere.proxy.backend.session
org.apache.shardingsphere.proxy.backend.session.transaction
org.apache.shardingsphere.proxy.frontend.command.executor

Cycles

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

Cycles Package Package Dependencies org.apache.shardingsphere.proxy.frontend.postgresql org.apache.shardingsphere.proxy.frontend.postgresql.command
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.bind
org.apache.shardingsphere.proxy.frontend.postgresql.command
org.apache.shardingsphere.proxy.frontend.postgresql.authentication.authenticator org.apache.shardingsphere.proxy.frontend.postgresql.authentication.authenticator.impl
org.apache.shardingsphere.proxy.frontend.postgresql.authentication.authenticator
org.apache.shardingsphere.proxy.frontend.postgresql.authentication.authenticator.impl org.apache.shardingsphere.proxy.frontend.postgresql.authentication.authenticator
org.apache.shardingsphere.proxy.frontend.postgresql.authentication.authenticator.impl
org.apache.shardingsphere.proxy.frontend.postgresql.command org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.bind
org.apache.shardingsphere.proxy.frontend.postgresql.command
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.bind org.apache.shardingsphere.proxy.frontend.postgresql.command
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.bind
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.close org.apache.shardingsphere.proxy.frontend.postgresql.command
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.bind
org.apache.shardingsphere.proxy.frontend.postgresql.command
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.execute org.apache.shardingsphere.proxy.frontend.postgresql.command
org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.bind
org.apache.shardingsphere.proxy.frontend.postgresql.command

Explanation

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

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

Explanation 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.