org.apache.sling.scripting.sightly.compiler.expression.nodes

Enum UnaryOperator

java.lang.Object

java.lang.Enum<UnaryOperator>

org.apache.sling.scripting.sightly.compiler.expression.nodes.UnaryOperator

All Implemented Interfaces:

Serializable, Comparable<UnaryOperator>

public enum UnaryOperator
extends Enum<UnaryOperator>

Unary operators used in expressions.

Enum Constant Summary

Enum Constants

Enum Constant and Description
IS_WHITESPACE Evaluates whether the operand is a string of only whitespace characters
LENGTH Evaluates the length of a collection
NOT Evaluates to logical negation of the operand

Method Summary

Modifier and Type	Method and Description
abstract Object	eval(Object operand)
static UnaryOperator	valueOf(String name) Returns the enum constant of this type with the specified name.
static UnaryOperator[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

NOT

public static final UnaryOperator NOT

Evaluates to logical negation of the operand

IS_WHITESPACE

public static final UnaryOperator IS_WHITESPACE

Evaluates whether the operand is a string of only whitespace characters

LENGTH

public static final UnaryOperator LENGTH

Evaluates the length of a collection

Method Detail

values

public static UnaryOperator[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (UnaryOperator c : UnaryOperator.values())
    System.out.println(c);

Returns:

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

valueOf

public static UnaryOperator valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (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 type has no constant with the specified name

NullPointerException - if the argument is null

eval

public abstract Object eval(Object operand)