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

Class SpecializeTransformWithJsonParse

java.lang.Object

io.trino.sql.ir.optimizer.rule.SpecializeTransformWithJsonParse

All Implemented Interfaces:

IrOptimizerRule

public class SpecializeTransformWithJsonParse
extends Object
implements IrOptimizerRule

Optimize case of transformation with cast and json_extract_scalars E.g,

• transform(cast(json_parse(varchar_column) as array<json>), json -> json_extract_scalar(json, jsonPath)) -> $internal$json_string_array_extract_scalar(varchar_column, jsonPath)

Constructor Summary

Constructors

Constructor	Description
SpecializeTransformWithJsonParse(PlannerContext context)

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

SpecializeTransformWithJsonParse

public SpecializeTransformWithJsonParse(PlannerContext context)

Method Details

apply

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

Specified by:

apply in interface IrOptimizerRule