Module com.darkcollective.relix.ast

Package com.darkcollective.relix.ast.visitor

package com.darkcollective.relix.ast.visitor

The visitor interfaces over the expression tree: RelNodeVisitor, PredicateVisitor and OperandVisitor.

Each hierarchy is sealed, so a switch over a node is exhaustive and is usually the simpler choice; a visitor suits a walk that dispatches on every kind.

Related Packages

Package	Description
com.darkcollective.relix.ast	Immutable AST node types for relational algebra expressions.
com.darkcollective.relix.ast.visitor.internal	The engine-side machinery behind com.darkcollective.relix.ast.visitor: not exported by the published artifact.
com.darkcollective.relix.ast.internal	Helpers over the expression tree that the engine's phases share: structural equivalence, operand walking, conjunct handling, temporal literal parsing.

Interfaces

Class	Description
OperandVisitor<R>	Visitor over the Operand sealed hierarchy.
PredicateVisitor<R>	Visitor over the Predicate sealed hierarchy.
RelNodeVisitor<R>	Visitor over the RelNode sealed hierarchy.