Synthetic readonly ROWIDs
Applies to ❌ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
A few database products support a ROWID type, which models a physical location of a row on the disk. A ROWID can act like a primary key, e.g. in the absence of a formal primary key, although being a physical address, rather than a logical one, there is usually no guarantee of a ROWID to never change. For short-lived record access, this may be irrelevant (e.g. within a single query, for faster self-joins).
jOOQ's code generator allows for specifying a synthetic ROWID configuration that produces such ROWID columns on all tables that it matches. Combine this with the synthetic primary key feature, and you can replace a potentially existing primary key for all interactions with the row, including e.g. CRUD with UpdatableRecords (some vendor specific limitations may apply).
<configuration>
<generator>
<database>
<syntheticObjects>
<readonlyRowids>
<readonlyRowid>
<!-- Optional name of the column in generated code. -->
<name>ROWID</name>
<!-- Regular expression matching all tables that have this synthetic ROWID. -->
<tables>SCHEMA\.TABLE</tables>
</readonlyRowid>
</readonlyRowids>
</syntheticObjects>
</database>
</generator>
</configuration>
See the configuration XSD, standalone code generation, and maven code generation for more details.
new org.jooq.meta.jaxb.Configuration()
.withGenerator(new Generator()
.withDatabase(new Database()
.withSyntheticObjects(new SyntheticObjectsType()
.withReadonlyRowids(
new SyntheticReadonlyRowidType()
// Optional name of the column in generated code.
.withName("ROWID")
// Regular expression matching all tables that have this synthetic ROWID.
.withTables("SCHEMA\\.TABLE")
)
)
)
)
See the configuration XSD and programmatic code generation for more details.
// The jOOQ-codegen-gradle plugin has been introduced in version 3.19 only.
// The jOOQ-codegen-gradle plugin has been introduced in version 3.19 only.
generationTool {
generator {
database {
syntheticObjects {
readonlyRowids {
readonlyRowid {
// Optional name of the column in generated code.
name = "ROWID"
// Regular expression matching all tables that have this synthetic ROWID.
tables = "SCHEMA\\.TABLE"
}
}
}
}
}
}
See the configuration XSD and gradle code generation for more details.
As always, when regular expressions are used, they are regular expressions with default flags.
Feedback
Do you have any feedback about this page? We'd love to hear it!