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.database.protocol.opengauss.codec

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 0 19 0.0% 100.0% 0.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages None org.apache.shardingsphere.database.protocol.opengauss.codec.OpenGaussPacketCodecEngine
None io.netty.buffer
io.netty.channel
io.netty.util
java.lang
java.nio.charset
java.util
org.apache.shardingsphere.database.exception.postgresql.vendor
org.apache.shardingsphere.database.protocol.codec
org.apache.shardingsphere.database.protocol.constant
org.apache.shardingsphere.database.protocol.opengauss.packet.command
org.apache.shardingsphere.database.protocol.opengauss.packet.command.generic
org.apache.shardingsphere.database.protocol.packet
org.apache.shardingsphere.database.protocol.packet.command
org.apache.shardingsphere.database.protocol.payload
org.apache.shardingsphere.database.protocol.postgresql.constant
org.apache.shardingsphere.database.protocol.postgresql.packet.command
org.apache.shardingsphere.database.protocol.postgresql.packet.identifier
org.apache.shardingsphere.database.protocol.postgresql.payload
org.apache.shardingsphere.infra.exception.external.sql.sqlstate

org.apache.shardingsphere.database.protocol.opengauss.constant

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.database.protocol.opengauss.constant.OpenGaussAuthenticationMethod
org.apache.shardingsphere.database.protocol.opengauss.constant.OpenGaussProtocolVersion
org.apache.shardingsphere.database.protocol.opengauss.packet.authentication
java.lang
org.apache.shardingsphere.database.protocol.constant

org.apache.shardingsphere.database.protocol.opengauss.packet.authentication

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 0 12 0.0% 100.0% 0.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages None org.apache.shardingsphere.database.protocol.opengauss.packet.authentication.OpenGaussAuthenticationHexData
org.apache.shardingsphere.database.protocol.opengauss.packet.authentication.OpenGaussAuthenticationSCRAMSha256Packet
org.apache.shardingsphere.database.protocol.opengauss.packet.authentication.OpenGaussMacCalculator
org.apache.shardingsphere.database.protocol.opengauss.packet.authentication.OpenGaussMacCalculator$MacType
None com.google.common.base
java.lang
java.nio.charset
java.security
java.security.spec
java.util
javax.crypto
javax.crypto.spec
org.apache.shardingsphere.database.protocol.opengauss.constant
org.apache.shardingsphere.database.protocol.postgresql.packet.identifier
org.apache.shardingsphere.database.protocol.postgresql.payload
org.apache.shardingsphere.infra.util.string

org.apache.shardingsphere.database.protocol.opengauss.packet.command

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 2 20 25.0% 91.0% 16.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages org.apache.shardingsphere.database.protocol.opengauss.packet.command.OpenGaussCommandPacket
org.apache.shardingsphere.database.protocol.opengauss.packet.command.OpenGaussCommandPacketFactory
org.apache.shardingsphere.database.protocol.opengauss.packet.command.OpenGaussCommandPacketFactory$1
org.apache.shardingsphere.database.protocol.opengauss.packet.command.OpenGaussCommandPacketType
org.apache.shardingsphere.database.protocol.opengauss.codec
org.apache.shardingsphere.database.protocol.opengauss.packet.command.bind
io.netty.buffer
java.lang
java.util
org.apache.shardingsphere.database.protocol.opengauss.packet.command.bind
org.apache.shardingsphere.database.protocol.opengauss.packet.identifier
org.apache.shardingsphere.database.protocol.packet.command
org.apache.shardingsphere.database.protocol.postgresql.packet.command
org.apache.shardingsphere.database.protocol.postgresql.packet.command.admin
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.flush
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query.extended.parse
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query.extended.sync
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query.simple
org.apache.shardingsphere.database.protocol.postgresql.packet.generic
org.apache.shardingsphere.database.protocol.postgresql.packet.identifier
org.apache.shardingsphere.database.protocol.postgresql.payload

org.apache.shardingsphere.database.protocol.opengauss.packet.command.bind

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 1 11 0.0% 92.0% 8.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages None org.apache.shardingsphere.database.protocol.opengauss.packet.command.bind.OpenGaussComBatchBindPacket
org.apache.shardingsphere.database.protocol.opengauss.packet.command
io.netty.buffer
java.lang
java.util
org.apache.shardingsphere.database.protocol.opengauss.packet.command
org.apache.shardingsphere.database.protocol.opengauss.packet.identifier
org.apache.shardingsphere.database.protocol.postgresql.constant
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query.extended
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query.extended.bind.protocol
org.apache.shardingsphere.database.protocol.postgresql.packet.command.query.extended.bind.protocol.text
org.apache.shardingsphere.database.protocol.postgresql.packet.identifier
org.apache.shardingsphere.database.protocol.postgresql.payload

org.apache.shardingsphere.database.protocol.opengauss.packet.command.generic

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 1 5 0.0% 83.0% 17.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages None org.apache.shardingsphere.database.protocol.opengauss.packet.command.generic.OpenGaussErrorResponsePacket
org.apache.shardingsphere.database.protocol.opengauss.codec
java.lang
java.util
org.apache.shardingsphere.database.protocol.postgresql.packet.identifier
org.apache.shardingsphere.database.protocol.postgresql.payload
org.opengauss.util

org.apache.shardingsphere.database.protocol.opengauss.packet.identifier

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 2 2 100.0% 50.0% 50.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages org.apache.shardingsphere.database.protocol.opengauss.packet.identifier.OpenGaussIdentifierTag
None org.apache.shardingsphere.database.protocol.opengauss.packet.command
org.apache.shardingsphere.database.protocol.opengauss.packet.command.bind
java.lang
org.apache.shardingsphere.database.protocol.postgresql.packet.identifier

org.apache.shardingsphere.database.protocol.opengauss.type

Packages Afferent Couplings Efferent Couplings Abstractness Instability Distance 0 5 0.0% 100.0% 0.0% Packages Abstract Classes Concrete Classes Used by Packages Uses Packages None org.apache.shardingsphere.database.protocol.opengauss.type.OpenGaussColumnTypeOIDResolver
None java.lang
java.sql
java.util
org.apache.shardingsphere.database.protocol.postgresql.type
org.opengauss.core

Cycles

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

Cycles Package Package Dependencies org.apache.shardingsphere.database.protocol.opengauss.codec org.apache.shardingsphere.database.protocol.opengauss.packet.command
org.apache.shardingsphere.database.protocol.opengauss.packet.command.bind
org.apache.shardingsphere.database.protocol.opengauss.packet.command
org.apache.shardingsphere.database.protocol.opengauss.packet.command org.apache.shardingsphere.database.protocol.opengauss.packet.command.bind
org.apache.shardingsphere.database.protocol.opengauss.packet.command
org.apache.shardingsphere.database.protocol.opengauss.packet.command.bind org.apache.shardingsphere.database.protocol.opengauss.packet.command
org.apache.shardingsphere.database.protocol.opengauss.packet.command.bind

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.