gudusoft.gsqlparser.ir.semantic.binding

Class RelationBinding

Object

gudusoft.gsqlparser.ir.semantic.binding.RelationBinding

public final class RelationBinding
extends Object

Binding of a FROM-clause relation to a catalog object. Slice 1 always produces a RelationKind.TABLE binding whose qualifiedName is the bare table name; later slices fill server/database/schema and add CTE/SUBQUERY kinds.

Slice 14 added RelationKind.OUTER_REFERENCE to model an inner statement's reference to an enclosing-scope alias. Slice 15 extends OUTER_REFERENCE bindings to carry an outerKind specifying what the enclosing-scope relation is actually bound to (TABLE / CTE / SUBQUERY); the projector dispatches through that resolved kind to BFS the outer body for CTE / SUBQUERY correlations.

Constructor invariants:

• The 2-arg constructor rejects kind == OUTER_REFERENCE — OUTER_REFERENCE callers MUST use the 3-arg form so the resolved outerKind is always declared explicitly.
• The 3-arg constructor rejects kind != OUTER_REFERENCE. The outerKind parameter must be one of the allow-list {TABLE, CTE, SUBQUERY}; UNION / UNKNOWN / OUTER_REFERENCE / null all throw.

Constructor Summary

Constructors

Constructor and Description
RelationBinding(RelationKind kind, String qualifiedName)
RelationBinding(RelationKind kind, String qualifiedName, RelationKind outerKind)

Method Summary

Modifier and Type	Method and Description
RelationKind	getKind()
RelationKind	getOuterKind() For OUTER_REFERENCE bindings, the underlying kind that the enclosing-scope relation resolves to (TABLE / CTE / SUBQUERY).
String	getQualifiedName()

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RelationBinding

public RelationBinding(RelationKind kind,
                       String qualifiedName)

RelationBinding

public RelationBinding(RelationKind kind,
                       String qualifiedName,
                       RelationKind outerKind)

Method Detail

getKind

public RelationKind getKind()

getQualifiedName

public String getQualifiedName()

getOuterKind

public RelationKind getOuterKind()

For OUTER_REFERENCE bindings, the underlying kind that the enclosing-scope relation resolves to (TABLE / CTE / SUBQUERY). Returns null for non-OUTER_REFERENCE bindings.