Package io.prestosql.spi.connector

Interface LocalProperty<E>

All Known Implementing Classes:

ConstantProperty, GroupingProperty, SortingProperty

public interface LocalProperty<E>

Method Summary

Modifier and Type	Method	Description
default LocalProperty<E>	constrain(java.util.Set<E> columns)	Return a new instance with the give (reduced) set of columns
java.util.Set<E>	getColumns()
boolean	isOrderSensitive()	Returns true if reordering breaks this LocalProperty
boolean	isSimplifiedBy(LocalProperty<E> actual)	Return true if the actual LocalProperty can be used to simplify this LocalProperty
<T> java.util.Optional<LocalProperty<T>>	translate(java.util.function.Function<E,java.util.Optional<T>> translator)
default java.util.Optional<LocalProperty<E>>	withConstants(java.util.Set<E> constants)	Simplfies this LocalProperty provided that the specified inputs are constants

Method Detail

translate

<T> java.util.Optional<LocalProperty<T>> translate(java.util.function.Function<E,java.util.Optional<T>> translator)

isOrderSensitive

boolean isOrderSensitive()

Returns true if reordering breaks this LocalProperty

isSimplifiedBy

boolean isSimplifiedBy(LocalProperty<E> actual)

Return true if the actual LocalProperty can be used to simplify this LocalProperty

withConstants

default java.util.Optional<LocalProperty<E>> withConstants(java.util.Set<E> constants)

Simplfies this LocalProperty provided that the specified inputs are constants

constrain

default LocalProperty<E> constrain(java.util.Set<E> columns)

Return a new instance with the give (reduced) set of columns

getColumns

java.util.Set<E> getColumns()