Package io.trino.sql.ir.optimizer.rule

Class RemoveRedundantLogicalTerms

java.lang.Object

io.trino.sql.ir.optimizer.rule.RemoveRedundantLogicalTerms

All Implemented Interfaces:

IrOptimizerRule

public class RemoveRedundantLogicalTerms
extends Object
implements IrOptimizerRule

Remove duplicated and redundant terms in logical expressions. E.g.,

• And(a, b, a, true, c) -> And(a, b, c)
• Or(a, b, a, false, c) -> Or(a, b, c)
• And(a, a) -> a

Constructor Summary

Constructors

Constructor	Description
RemoveRedundantLogicalTerms()

Method Summary

Modifier and Type	Method	Description
Optional<Expression>	apply(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

Constructor Details

RemoveRedundantLogicalTerms

public RemoveRedundantLogicalTerms()

Method Details

apply

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

Specified by:

apply in interface IrOptimizerRule