Package tools.refinery.logic.literal

Enum Class Reduction

java.lang.Object

java.lang.Enum<Reduction>

tools.refinery.logic.literal.Reduction

All Implemented Interfaces:

Serializable, Comparable<Reduction>, Constable

public enum Reduction
extends Enum<Reduction>

Represents the possible reductions of a clause. A clause may be reduced to a smaller clause by omitting literals that are always true or by omitting the clause entirely if it is always false. Sometimes it is not possible to reduce the clause.

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
ALWAYS_FALSE	Signifies that the clause with the literal may be omitted entirely.
ALWAYS_TRUE	Signifies that the literal may be omitted from the cause (if the model being queried is nonempty).
NOT_REDUCIBLE	Signifies that a literal should be preserved in the clause.

Method Summary

Modifier and Type	Method	Description
Reduction	negate()
static Reduction	valueOf(String name)	Returns the enum constant of this class with the specified name.
static Reduction[]	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

NOT_REDUCIBLE

public static final Reduction NOT_REDUCIBLE

Signifies that a literal should be preserved in the clause.

ALWAYS_TRUE

public static final Reduction ALWAYS_TRUE

Signifies that the literal may be omitted from the cause (if the model being queried is nonempty).

ALWAYS_FALSE

public static final Reduction ALWAYS_FALSE

Signifies that the clause with the literal may be omitted entirely.

Method Details

values

public static Reduction[] 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 Reduction 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

negate

public Reduction negate()