gudusoft.gsqlparser.sqlenv

Class CanonKey

Object

gudusoft.gsqlparser.sqlenv.CanonKey

public final class CanonKey
extends Object

Canonical identity of a single SQL identifier segment under one vendor's identifier rules (unification plan stage P0c, docs/refactor/identifier_normalization_unification_plan.md).

Two keys compare equal iff they were produced in the same rule domain — vendor, object group, policy fingerprint (rules + vendor flags, including the default collation) and collator identity — AND their canonical payloads match. The payload is the IdentifierService.keyForMap(java.lang.String, gudusoft.gsqlparser.sqlenv.ESQLDataObjectType) text for fold-based rules, or the CollationKey bytes (from the same collator the equality path uses) for collation-based rules. The comparison rule that selected the payload is deliberately NOT part of equality: under quoted-case-preserving vendors, unquoted foo (folded to FOO) and quoted "FOO" (preserved as FOO) must converge on the same key even though different rules produced them.

In-process only. Collation key bytes are only stable within one JVM/collator configuration; never persist or exchange CanonKeys. Custom CollatorProvider subclasses are isolated by class name — two instances of the same class with different behavior cannot be distinguished.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
String	getCanonText() Canonical text payload.
IdentifierProfile.ObjectGroup	getGroup()
EDbVendor	getVendor()
int	hashCode()
boolean	isCollationBased()
String	toString()

Methods inherited from class Object

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

Method Detail

getVendor

public EDbVendor getVendor()

getGroup

public IdentifierProfile.ObjectGroup getGroup()

getCanonText

public String getCanonText()

Canonical text payload. For collation-based keys this is diagnostic only.

isCollationBased

public boolean isCollationBased()

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