Package tools.refinery.interpreter.matchers.util

Enum Class Accuracy

java.lang.Object

java.lang.Enum<Accuracy>

tools.refinery.interpreter.matchers.util.Accuracy

All Implemented Interfaces:

Serializable, Comparable<Accuracy>, Constable

public enum Accuracy
extends Enum<Accuracy>

The degree of accuracy of a cardinality estimate

Since:

2.1

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
APPROXIMATION
BEST_LOWER_BOUND
BEST_UPPER_BOUND
EXACT_COUNT

Method Summary

Modifier and Type	Method	Description
boolean	atLeastAsPreciseAs(Accuracy other)	Partial order comparison.
Accuracy	reciprocal()
static Accuracy	valueOf(String name)	Returns the enum constant of this class with the specified name.
static Accuracy[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

EXACT_COUNT

public static final Accuracy EXACT_COUNT

BEST_UPPER_BOUND

public static final Accuracy BEST_UPPER_BOUND

BEST_LOWER_BOUND

public static final Accuracy BEST_LOWER_BOUND

APPROXIMATION

public static final Accuracy APPROXIMATION

Method Details

values

public static Accuracy[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static Accuracy valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null

atLeastAsPreciseAs

public boolean atLeastAsPreciseAs(Accuracy other)

Partial order comparison.

reciprocal

public Accuracy reciprocal()

Returns:

another accuracy value that is anti-monotonic to this one, i.e. an accuracy that should be used in the denominator to obtain a fraction with this accuracy