com.fasterxml.jackson.databind.node

Class BooleanNode

java.lang.Object

com.fasterxml.jackson.databind.JsonSerializable.Base

com.fasterxml.jackson.databind.JsonNode

com.fasterxml.jackson.databind.node.BaseJsonNode

com.fasterxml.jackson.databind.node.ValueNode

com.fasterxml.jackson.databind.node.BooleanNode

All Implemented Interfaces:

TreeNode, JsonSerializable, Serializable, Iterable<JsonNode>

public class BooleanNode
extends ValueNode

This concrete value class is used to contain boolean (true / false) values. Only two instances are ever created, to minimize memory usage.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface com.fasterxml.jackson.databind.JsonSerializable

JsonSerializable.Base

Field Summary

Fields

Modifier and Type	Field and Description
static BooleanNode	FALSE
static BooleanNode	TRUE

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BooleanNode(boolean v) NOTE: visibility raised to `protected` in 2.9.3 to allow custom subtypes.

Method Summary

Modifier and Type	Method and Description
boolean	asBoolean() Method that will try to convert value of this node to a Java boolean.
boolean	asBoolean(boolean defaultValue) Method that will try to convert value of this node to a Java boolean.
double	asDouble(double defaultValue) Method that will try to convert value of this node to a Java double.
int	asInt(int defaultValue) Method that will try to convert value of this node to a Java int.
long	asLong(long defaultValue) Method that will try to convert value of this node to a Java long.
String	asText() Method that will return a valid String representation of the container value, if the node is a value node (method JsonNode.isValueNode() returns true), otherwise empty String.
JsonToken	asToken() Method that can be used for efficient type detection when using stream abstraction for traversing nodes.
boolean	booleanValue() Method to use for accessing JSON boolean values (value literals 'true' and 'false').
boolean	equals(Object o) Equality for node objects is defined as full (deep) value equality.
static BooleanNode	getFalse()
JsonNodeType	getNodeType() Return the type of this node
static BooleanNode	getTrue()
int	hashCode()
protected Object	readResolve()
void	serialize(JsonGenerator g, SerializerProvider provider) Method called to serialize node instances using given generator.
static BooleanNode	valueOf(boolean b)

Methods inherited from class com.fasterxml.jackson.databind.node.ValueNode

_at, deepCopy, findParent, findParents, findValue, findValues, findValuesAsText, get, get, has, has, hasNonNull, hasNonNull, isEmpty, path, path, serializeWithType

Methods inherited from class com.fasterxml.jackson.databind.node.BaseJsonNode

findPath, numberType, required, required, toPrettyString, toString, traverse, traverse

Methods inherited from class com.fasterxml.jackson.databind.JsonNode

_reportRequiredViolation, _this, asDouble, asInt, asLong, asText, at, at, bigIntegerValue, binaryValue, canConvertToInt, canConvertToLong, decimalValue, doubleValue, elements, equals, fieldNames, fields, findParents, findValues, findValuesAsText, floatValue, intValue, isArray, isBigDecimal, isBigInteger, isBinary, isBoolean, isContainerNode, isDouble, isFloat, isFloatingPointNumber, isInt, isIntegralNumber, isLong, isMissingNode, isNull, isNumber, isObject, isPojo, isShort, isTextual, isValueNode, iterator, longValue, numberValue, require, requiredAt, requiredAt, requireNonNull, shortValue, size, textValue, with, withArray

Methods inherited from class com.fasterxml.jackson.databind.JsonSerializable.Base

isEmpty

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

TRUE

public static final BooleanNode TRUE

FALSE

public static final BooleanNode FALSE

Constructor Detail

BooleanNode

protected BooleanNode(boolean v)

NOTE: visibility raised to `protected` in 2.9.3 to allow custom subtypes.

Method Detail

readResolve

protected Object readResolve()

getTrue

public static BooleanNode getTrue()

getFalse

public static BooleanNode getFalse()

valueOf

public static BooleanNode valueOf(boolean b)

getNodeType

public JsonNodeType getNodeType()

Description copied from class: JsonNode

Return the type of this node

Specified by:

getNodeType in class JsonNode

Returns:

the node type as a JsonNodeType enum value

asToken

public JsonToken asToken()

Description copied from class: BaseJsonNode

Method that can be used for efficient type detection when using stream abstraction for traversing nodes. Will return the first JsonToken that equivalent stream event would produce (for most nodes there is just one token but for structured/container types multiple)

Specified by:

asToken in interface TreeNode

Specified by:

asToken in class ValueNode

booleanValue

public boolean booleanValue()

Description copied from class: JsonNode

Method to use for accessing JSON boolean values (value literals 'true' and 'false'). For other types, always returns false.

Overrides:

booleanValue in class JsonNode

Returns:

Textual value this node contains, iff it is a textual json node (comes from JSON String value entry)

asText

public String asText()

Description copied from class: JsonNode

Method that will return a valid String representation of the container value, if the node is a value node (method JsonNode.isValueNode() returns true), otherwise empty String.

Specified by:

asText in class JsonNode

asBoolean

public boolean asBoolean()

Description copied from class: JsonNode

Method that will try to convert value of this node to a Java boolean. JSON booleans map naturally; integer numbers other than 0 map to true, and 0 maps to false and Strings 'true' and 'false' map to corresponding values.

If representation cannot be converted to a boolean value (including structured types like Objects and Arrays), default value of false will be returned; no exceptions are thrown.

Overrides:

asBoolean in class JsonNode

asBoolean

public boolean asBoolean(boolean defaultValue)

Description copied from class: JsonNode

Method that will try to convert value of this node to a Java boolean. JSON booleans map naturally; integer numbers other than 0 map to true, and 0 maps to false and Strings 'true' and 'false' map to corresponding values.

If representation cannot be converted to a boolean value (including structured types like Objects and Arrays), specified defaultValue will be returned; no exceptions are thrown.

Overrides:

asBoolean in class JsonNode

asInt

public int asInt(int defaultValue)

Description copied from class: JsonNode

Method that will try to convert value of this node to a Java int. Numbers are coerced using default Java rules; booleans convert to 0 (false) and 1 (true), and Strings are parsed using default Java language integer parsing rules.

If representation cannot be converted to an int (including structured types like Objects and Arrays), specified defaultValue will be returned; no exceptions are thrown.

Overrides:

asInt in class JsonNode

asLong

public long asLong(long defaultValue)

Description copied from class: JsonNode

Method that will try to convert value of this node to a Java long. Numbers are coerced using default Java rules; booleans convert to 0 (false) and 1 (true), and Strings are parsed using default Java language integer parsing rules.

If representation cannot be converted to an long (including structured types like Objects and Arrays), specified defaultValue will be returned; no exceptions are thrown.

Overrides:

asLong in class JsonNode

asDouble

public double asDouble(double defaultValue)

Description copied from class: JsonNode

Method that will try to convert value of this node to a Java double. Numbers are coerced using default Java rules; booleans convert to 0.0 (false) and 1.0 (true), and Strings are parsed using default Java language integer parsing rules.

If representation cannot be converted to an int (including structured types like Objects and Arrays), specified defaultValue will be returned; no exceptions are thrown.

Overrides:

asDouble in class JsonNode

serialize

public final void serialize(JsonGenerator g,
                            SerializerProvider provider)
                     throws IOException

Description copied from class: BaseJsonNode

Method called to serialize node instances using given generator.

Specified by:

serialize in interface JsonSerializable

Specified by:

serialize in class BaseJsonNode

Throws:

IOException

hashCode

public int hashCode()

Specified by:

hashCode in class BaseJsonNode

equals

public boolean equals(Object o)

Description copied from class: JsonNode

Equality for node objects is defined as full (deep) value equality. This means that it is possible to compare complete JSON trees for equality by comparing equality of root nodes.

Note: marked as abstract to ensure all implementation classes define it properly and not rely on definition from Object.

Specified by:

equals in class JsonNode