mini\Database\ExpressionEvaluator class

Documentation

Evaluates SQL AST expressions against a row context

Used by VirtualDatabase to evaluate WHERE conditions, SELECT expressions, etc.

Properties (1)

private mixed $subqueryExecutor

Callable that executes a subquery and returns result rows

Methods (18)

public setSubqueryExecutor()

Set the subquery executor for handling scalar subqueries

public evaluate()

Evaluate an expression node against a row

public evaluateAsBool()

Evaluate expression as boolean (for WHERE, HAVING, ON conditions)

private evaluateLiteral()

Documentation missing

private evaluateIdentifier()

Documentation missing

private evaluateBinaryOp()

Documentation missing

private evaluateUnaryOp()

Documentation missing

private evaluateFunction()

Documentation missing

private fnSubstr()

Documentation missing

private fnCoalesce()

Documentation missing

private evaluateIn()

Evaluate IN/NOT IN with proper three-valued NULL logic

private evaluateIsNull()

Documentation missing

private evaluateLike()

Documentation missing

private evaluateBetween()

Documentation missing

private evaluateCaseWhen()

Evaluate CASE WHEN expression

private evaluateSubquery()

Evaluate scalar subquery

private evaluateExists()

Evaluate EXISTS operation - returns true if subquery returns any rows

private evaluateNiladicFunction()

Evaluate niladic function (CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP)

Source

src/Database/ExpressionEvaluator.php:28-597