gudusoft.gsqlparser.catalog.runtime

Class CatalogParentConstraint

Object

gudusoft.gsqlparser.catalog.runtime.CatalogParentConstraint

public final class CatalogParentConstraint
extends Object

What is known about a child object's PARENT kind before resolution (stage S0R of docs/refactor/identifier_identity_display_separation_plan.md).

Why a constraint and not a kind

A resolved identity always knows its parent's exact kind. A LOOKUP often does not: parsing schema.relation.column establishes that the parent is a relation, but not whether the object it resolves to will be a table, a view or a materialized view. An API that demanded the exact kind would force the caller to invent TABLE to get past it — which is the arity-style guess in a new costume, and it would then reject the perfectly correct answer when the name turned out to be a view.

So a lookup carries a family; only CatalogObjectKey carries an exact kind.

Field Summary

Fields

Modifier and Type	Field and Description
static CatalogParentConstraint	RELATION Relations own columns.
static CatalogParentConstraint	ROUTINE_CONTAINER Containers that own routines.

Method Summary

Modifier and Type	Method and Description
boolean	admits(CatalogObjectKind kind)
Set<CatalogObjectKind>	allowedKinds()
boolean	equals(Object o)
CatalogObjectKind	exactKind() The single kind, when this constraint names exactly one; null for a family.
static CatalogParentConstraint	exactly(CatalogObjectKind kind) Exactly one kind — for a caller whose metadata genuinely states it.
int	hashCode()
String	toString()

Methods inherited from class Object

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

Field Detail

RELATION

public static final CatalogParentConstraint RELATION

Relations own columns.

ROUTINE_CONTAINER

public static final CatalogParentConstraint ROUTINE_CONTAINER

Containers that own routines.

Method Detail

exactly

public static CatalogParentConstraint exactly(CatalogObjectKind kind)

Exactly one kind — for a caller whose metadata genuinely states it.

admits

public boolean admits(CatalogObjectKind kind)

exactKind

public CatalogObjectKind exactKind()

The single kind, when this constraint names exactly one; null for a family.

allowedKinds

public Set<CatalogObjectKind> allowedKinds()

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