Package io.trino.sql.ir.optimizer

Class IrExpressionOptimizer

java.lang.Object

io.trino.sql.ir.optimizer.IrExpressionOptimizer

public class IrExpressionOptimizer
extends Object

Method Summary

Modifier and Type	Method	Description
static IrExpressionOptimizer	newOptimizer(PlannerContext context)	Get a full expression optimizer.
static IrExpressionOptimizer	newPartialEvaluator(PlannerContext context)	Get an optimizer that does partial evaluation only (constant folding).
Optional<Expression>	process(Expression expression, Session session, Map<Symbol,Expression> bindings)

Methods inherited from class java.lang.Object

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

Method Details

newOptimizer

public static IrExpressionOptimizer newOptimizer(PlannerContext context)

Get a full expression optimizer. Performs partial evaluation and other semantic rewrites

newPartialEvaluator

public static IrExpressionOptimizer newPartialEvaluator(PlannerContext context)

Get an optimizer that does partial evaluation only (constant folding). This can be used for simplifying expressions given known variable bindings.

process

public Optional<Expression> process(Expression expression,
 Session session,
 Map<Symbol,Expression> bindings)