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 ]
Summary
| Package |
TC |
CC |
AC |
Ca |
Ce |
A |
I |
D |
V |
| org.apache.shardingsphere.data.pipeline.opengauss.datasource |
1 |
1 |
0 |
0 |
3 |
0.0% |
100.0% |
0.0% |
1 |
| org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.dumper |
2 |
2 |
0 |
0 |
23 |
0.0% |
100.0% |
0.0% |
1 |
| org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.wal |
1 |
1 |
0 |
1 |
15 |
0.0% |
94.0% |
6.0% |
1 |
| org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.wal.decode |
3 |
3 |
0 |
2 |
7 |
0.0% |
78.0% |
22.0% |
1 |
| org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.wal.position |
1 |
1 |
0 |
0 |
8 |
0.0% |
100.0% |
0.0% |
1 |
| org.apache.shardingsphere.data.pipeline.opengauss.ingest.inventory |
1 |
1 |
0 |
0 |
4 |
0.0% |
100.0% |
0.0% |
1 |
| org.apache.shardingsphere.data.pipeline.opengauss.prepare.datasource |
1 |
1 |
0 |
0 |
3 |
0.0% |
100.0% |
0.0% |
1 |
| org.apache.shardingsphere.data.pipeline.opengauss.query |
1 |
1 |
0 |
0 |
3 |
0.0% |
100.0% |
0.0% |
1 |
Packages
[ summary ] [ packages ] [ cycles ] [ explanations ]
org.apache.shardingsphere.data.pipeline.opengauss.datasource
Packages
| Afferent Couplings |
Efferent Couplings |
Abstractness |
Instability |
Distance |
| 0 |
3 |
0.0% |
100.0% |
0.0% |
Packages
| Abstract Classes |
Concrete Classes |
Used by Packages |
Uses Packages |
| None |
org.apache.shardingsphere.data.pipeline.opengauss.datasource.OpenGaussJdbcQueryPropertiesExtension
|
None |
java.lang
java.util
org.apache.shardingsphere.data.pipeline.spi
|
org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.dumper
Packages
| Afferent Couplings |
Efferent Couplings |
Abstractness |
Instability |
Distance |
| 0 |
23 |
0.0% |
100.0% |
0.0% |
Packages
| Abstract Classes |
Concrete Classes |
Used by Packages |
Uses Packages |
| None |
org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.dumper.OpenGaussIncrementalDumper
org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.dumper.OpenGaussIncrementalDumperCreator
|
None |
java.lang
java.nio
java.sql
java.util
java.util.concurrent.atomic
java.util.regex
org.apache.shardingsphere.data.pipeline.api.type
org.apache.shardingsphere.data.pipeline.core.channel
org.apache.shardingsphere.data.pipeline.core.exception
org.apache.shardingsphere.data.pipeline.core.execute
org.apache.shardingsphere.data.pipeline.core.ingest.dumper
org.apache.shardingsphere.data.pipeline.core.ingest.dumper.incremental
org.apache.shardingsphere.data.pipeline.core.ingest.position
org.apache.shardingsphere.data.pipeline.core.metadata.loader
org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.wal
org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.wal.decode
org.apache.shardingsphere.data.pipeline.postgresql.ingest.incremental.wal
org.apache.shardingsphere.data.pipeline.postgresql.ingest.incremental.wal.decode
org.apache.shardingsphere.data.pipeline.postgresql.ingest.incremental.wal.event
org.apache.shardingsphere.data.pipeline.postgresql.ingest.incremental.wal.position.slot
org.opengauss.jdbc
org.opengauss.replication
org.slf4j
|
org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.wal
Packages
| Afferent Couplings |
Efferent Couplings |
Abstractness |
Instability |
Distance |
| 1 |
15 |
0.0% |
94.0% |
6.0% |
Packages
| Abstract Classes |
Concrete Classes |
Used by Packages |
Uses Packages |
| None |
org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.wal.OpenGaussLogicalReplication
|
org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.dumper
|
java.lang
java.sql
java.util
org.apache.shardingsphere.data.pipeline.api.type
org.apache.shardingsphere.data.pipeline.postgresql.ingest.incremental.wal.decode
org.apache.shardingsphere.database.connector.core.jdbcurl.parser
org.apache.shardingsphere.database.connector.core.spi
org.apache.shardingsphere.database.connector.core.type
org.apache.shardingsphere.infra.spi.type.typed
org.opengauss
org.opengauss.jdbc
org.opengauss.replication
org.opengauss.replication.fluent
org.opengauss.replication.fluent.logical
org.slf4j
|
org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.wal.decode
Packages
| Afferent Couplings |
Efferent Couplings |
Abstractness |
Instability |
Distance |
| 2 |
7 |
0.0% |
78.0% |
22.0% |
Packages
| Abstract Classes |
Concrete Classes |
Used by Packages |
Uses Packages |
| None |
org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.wal.decode.MppTableData
org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.wal.decode.MppdbDecodingPlugin$1
org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.wal.decode.OpenGaussTimestampUtils
|
org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.dumper
org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.wal.position
|
java.lang
java.sql
java.util
org.apache.shardingsphere.data.pipeline.core.constant
org.apache.shardingsphere.data.pipeline.postgresql.ingest.incremental.wal.decode
org.apache.shardingsphere.infra.util.json
org.opengauss.jdbc
|
org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.wal.position
Packages
| Afferent Couplings |
Efferent Couplings |
Abstractness |
Instability |
Distance |
| 0 |
8 |
0.0% |
100.0% |
0.0% |
Packages
| Abstract Classes |
Concrete Classes |
Used by Packages |
Uses Packages |
| None |
org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.wal.position.OpenGaussIncrementalPositionManager
|
None |
java.lang
java.sql
javax.sql
org.apache.shardingsphere.data.pipeline.core.ingest.position
org.apache.shardingsphere.data.pipeline.opengauss.ingest.incremental.wal.decode
org.apache.shardingsphere.data.pipeline.postgresql.ingest.incremental.wal
org.apache.shardingsphere.data.pipeline.postgresql.ingest.incremental.wal.position.slot
org.opengauss.replication
|
org.apache.shardingsphere.data.pipeline.opengauss.ingest.inventory
Packages
| Afferent Couplings |
Efferent Couplings |
Abstractness |
Instability |
Distance |
| 0 |
4 |
0.0% |
100.0% |
0.0% |
Packages
| Abstract Classes |
Concrete Classes |
Used by Packages |
Uses Packages |
| None |
org.apache.shardingsphere.data.pipeline.opengauss.ingest.inventory.OpenGaussInventoryColumnValueReader
|
None |
java.lang
java.sql
java.util
org.apache.shardingsphere.data.pipeline.core.ingest.dumper.inventory.column
|
org.apache.shardingsphere.data.pipeline.opengauss.prepare.datasource
Packages
| Afferent Couplings |
Efferent Couplings |
Abstractness |
Instability |
Distance |
| 0 |
3 |
0.0% |
100.0% |
0.0% |
Packages
| Abstract Classes |
Concrete Classes |
Used by Packages |
Uses Packages |
| None |
org.apache.shardingsphere.data.pipeline.opengauss.prepare.datasource.OpenGaussPipelineJobDataSourcePrepareOption
|
None |
java.lang
java.util
org.apache.shardingsphere.data.pipeline.core.preparer.datasource.option
|
org.apache.shardingsphere.data.pipeline.opengauss.query
Packages
| Afferent Couplings |
Efferent Couplings |
Abstractness |
Instability |
Distance |
| 0 |
3 |
0.0% |
100.0% |
0.0% |
Packages
| Abstract Classes |
Concrete Classes |
Used by Packages |
Uses Packages |
| None |
org.apache.shardingsphere.data.pipeline.opengauss.query.OpenGaussJDBCStreamQueryBuilder
|
None |
java.lang
java.sql
org.apache.shardingsphere.data.pipeline.core.query
|
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.
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. |
