Package io.confluent.kafka.schemaregistry.type.logical

Class Rule

java.lang.Object

io.confluent.kafka.schemaregistry.type.logical.Rule

public final class Rule
extends Object

A validation rule attached to a Schema or Schema.Field, authored as a SQL-flavored CHECK (...) clause and translated to a CEL expression for runtime evaluation.

Mirrors the Meta.Rule doc in confluent/meta.proto so the wire form is uniform across Avro/JSON (as a confluent:rules array property) and Protobuf (as a repeated Rule rules field on Meta).

Field semantics:

• getName() — optional machine identifier from CONSTRAINT name CHECK (...); null if the user didn't supply one. Used in error reporting.
• getDoc() — optional human-readable error text from MESSAGE 'text'; null if absent. Surfaced when the rule fails at runtime.
• getExpr() — the translated CEL expression that the runtime evaluator executes. Always non-null.
• getSql() — the original SQL CHECK expression text. Used by the DDL emitter to round-trip back to readable SQL. Always non-null. Named sql to match the existing convention in Meta.Rule that distinguishes "sql-form source" from the "expression form" stored in expr.

The expr field is the source of truth for runtime evaluation; sql is the source of truth for DDL re-emission.

Constructor Summary

Constructors

Constructor	Description
Rule(String name, String doc, String expr, String sql)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
String	getDoc()
String	getExpr()
String	getName()
String	getSql()
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

Rule

public Rule(String name,
 String doc,
 String expr,
 String sql)

Method Details

getName

public String getName()

getDoc

public String getDoc()

getExpr

public String getExpr()

getSql

public String getSql()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object