com.fasterxml.jackson.annotation

Enum OptBoolean

java.lang.Object

java.lang.Enum<OptBoolean>

com.fasterxml.jackson.annotation.OptBoolean

All Implemented Interfaces:

Serializable, Comparable<OptBoolean>

public enum OptBoolean
extends Enum<OptBoolean>

Optional Boolean value ("nullean"). Needed just because Java annotations can not take 'null' as a value (even as default), so there is no way to distinguish between explicit `true` and `false`, and lack of choice (related: annotations are limited to primitives, so Boolean not allowed as solution).

Note: although use of `true` and `false` would be more convenient, they can not be chosen since they are Java keyword and compiler won't allow the choice. And since enum naming convention suggests all-upper-case, that is what is done here.

Since:

2.6

Enum Constant Summary

Enum Constants

Enum Constant and Description
DEFAULT Value that indicates that the annotation property does NOT have an explicit definition of enabled/disabled (or true/false); instead, a higher-level configuration value is used; or lacking higher-level global setting, default.
FALSE Value that indicates that the annotation property is explicitly defined to be disabled, or false.
TRUE Value that indicates that the annotation property is explicitly defined to be enabled, or true.

Method Summary

Modifier and Type	Method and Description
Boolean	asBoolean()
boolean	asPrimitive()
static boolean	equals(Boolean b1, Boolean b2)
static OptBoolean	fromBoolean(Boolean b)
static OptBoolean	valueOf(String name) Returns the enum constant of this type with the specified name.
static OptBoolean[]	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

TRUE

public static final OptBoolean TRUE

Value that indicates that the annotation property is explicitly defined to be enabled, or true.

FALSE

public static final OptBoolean FALSE

Value that indicates that the annotation property is explicitly defined to be disabled, or false.

DEFAULT

public static final OptBoolean DEFAULT

Value that indicates that the annotation property does NOT have an explicit definition of enabled/disabled (or true/false); instead, a higher-level configuration value is used; or lacking higher-level global setting, default.

Method Detail

values

public static OptBoolean[] 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 (OptBoolean c : OptBoolean.values())
    System.out.println(c);

Returns:

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

valueOf

public static OptBoolean 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

asBoolean

public Boolean asBoolean()

asPrimitive

public boolean asPrimitive()

fromBoolean

public static OptBoolean fromBoolean(Boolean b)

equals

public static boolean equals(Boolean b1,
                             Boolean b2)