Module com.darkcollective.relix.ast

Package com.darkcollective.relix.ast.internal

package 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. Not exported by the published artifact.

Related Packages

Package	Description
com.darkcollective.relix.ast	Immutable AST node types for relational algebra expressions.
com.darkcollective.relix.ast.visitor	The visitor interfaces over the expression tree: RelNodeVisitor, PredicateVisitor and OperandVisitor.

Classes

Class	Description
AstEquivalence	Structural equality over the AST — "are these two fragments the same expression?", asked without regard to where each was written.
AttributeNames	Utilities for working with possibly relation-qualified attribute names.
DisplayLabels	Shared rendering for the sub-expressions that appear inside a node label.
Identifiers	Delimited-identifier rendering for round-trippable pretty-printing.
LikePatterns	Translation of a SQL LIKE pattern into an anchored regular expression.
OperandWalker	A single, reusable structural walk over Operand expression trees (and the Predicate trees that contain them).
Predicates	Utilities for taking a Predicate tree apart and putting it back together.
Qualifiers	The relation names an expression's columns answer to as qualifiers.
RelNodeOperands	The operand-level counterpart of RelNode.children(): a single, exhaustive registration point for the Operand and Predicate expressions each RelNode carries directly.
TemporalLiterals	Parses the ISO-8601 payloads of the typed temporal literals (DATE '…', TIME '…', TIMESTAMP '…', DURATION '…') into the java.time values carried by DateOperand, TimeOperand, TimestampOperand, and DurationOperand.