com.fasterxml.jackson.databind.node

Class NumericNode

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.NumericNode

All Implemented Interfaces:

TreeNode, JsonSerializable, Serializable, Iterable<JsonNode>

Direct Known Subclasses:

BigIntegerNode, DecimalNode, DoubleNode, FloatNode, IntNode, LongNode, ShortNode

public abstract class NumericNode
extends ValueNode

Intermediate value node used for numeric nodes.

See Also:

Serialized Form

Nested Class Summary

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

JsonSerializable.Base

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	NumericNode()

Method Summary

Modifier and Type	Method and Description
double	asDouble() Method that will try to convert value of this node to a Java double.
double	asDouble(double defaultValue) Method that will try to convert value of this node to a Java double.
int	asInt() Method that will try to convert value of this node to a Java int.
int	asInt(int defaultValue) Method that will try to convert value of this node to a Java int.
long	asLong() Method that will try to convert value of this node to a Java long.
long	asLong(long defaultValue) Method that will try to convert value of this node to a Java long.
abstract 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.
abstract BigInteger	bigIntegerValue() Returns integer value for this node (as BigDecimal), if and only if this node is numeric (JsonNode.isNumber() returns true).
abstract boolean	canConvertToInt() Method that can be used to check whether this node is a numeric node (JsonNode.isNumber() would return true) AND its value fits within Java's 32-bit signed integer type, int.
abstract boolean	canConvertToLong() Method that can be used to check whether this node is a numeric node (JsonNode.isNumber() would return true) AND its value fits within Java's 64-bit signed integer type, long.
abstract BigDecimal	decimalValue() Returns floating point value for this node (as BigDecimal), if and only if this node is numeric (JsonNode.isNumber() returns true).
abstract double	doubleValue() Returns 64-bit floating point (double) value for this node, if and only if this node is numeric (JsonNode.isNumber() returns true).
JsonNodeType	getNodeType() Return the type of this node
abstract int	intValue() Returns integer value for this node, if and only if this node is numeric (JsonNode.isNumber() returns true).
boolean	isNaN() Convenience method for checking whether this node is a FloatNode or DoubleNode that contains "not-a-number" (NaN) value.
abstract long	longValue() Returns 64-bit long value for this node, if and only if this node is numeric (JsonNode.isNumber() returns true).
abstract JsonParser.NumberType	numberType() Returns code that identifies type of underlying numeric value, if (and only if) node is a number node.
abstract Number	numberValue() Returns numeric value for this node, if and only if this node is numeric (JsonNode.isNumber() returns true); otherwise returns null

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

_at, asToken, 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, hashCode, required, required, serialize, toPrettyString, toString, traverse, traverse

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

_reportRequiredViolation, _this, asBoolean, asBoolean, asText, at, at, binaryValue, booleanValue, elements, equals, equals, fieldNames, fields, findParents, findValues, findValuesAsText, floatValue, isArray, isBigDecimal, isBigInteger, isBinary, isBoolean, isContainerNode, isDouble, isFloat, isFloatingPointNumber, isInt, isIntegralNumber, isLong, isMissingNode, isNull, isNumber, isObject, isPojo, isShort, isTextual, isValueNode, iterator, 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

Constructor Detail

NumericNode

protected NumericNode()

Method Detail

getNodeType

public final 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

numberType

public abstract JsonParser.NumberType numberType()

Description copied from class: BaseJsonNode

Returns code that identifies type of underlying numeric value, if (and only if) node is a number node.

Specified by:

numberType in interface TreeNode

Overrides:

numberType in class BaseJsonNode

numberValue

public abstract Number numberValue()

Description copied from class: JsonNode

Returns numeric value for this node, if and only if this node is numeric (JsonNode.isNumber() returns true); otherwise returns null

Overrides:

numberValue in class JsonNode

Returns:

Number value this node contains, if any (null for non-number nodes).

intValue

public abstract int intValue()

Description copied from class: JsonNode

Returns integer value for this node, if and only if this node is numeric (JsonNode.isNumber() returns true). For other types returns 0. For floating-point numbers, value is truncated using default Java coercion, similar to how cast from double to int operates.

Overrides:

intValue in class JsonNode

Returns:

Integer value this node contains, if any; 0 for non-number nodes.

longValue

public abstract long longValue()

Description copied from class: JsonNode

Returns 64-bit long value for this node, if and only if this node is numeric (JsonNode.isNumber() returns true). For other types returns 0. For floating-point numbers, value is truncated using default Java coercion, similar to how cast from double to long operates.

Overrides:

longValue in class JsonNode

Returns:

Long value this node contains, if any; 0 for non-number nodes.

doubleValue

public abstract double doubleValue()

Description copied from class: JsonNode

Returns 64-bit floating point (double) value for this node, if and only if this node is numeric (JsonNode.isNumber() returns true). For other types returns 0.0. For integer values, conversion is done using coercion; this may result in overflows with BigInteger values.

Overrides:

doubleValue in class JsonNode

Returns:

64-bit double value this node contains, if any; 0.0 for non-number nodes.

decimalValue

public abstract BigDecimal decimalValue()

Description copied from class: JsonNode

Returns floating point value for this node (as BigDecimal), if and only if this node is numeric (JsonNode.isNumber() returns true). For other types returns BigDecimal.ZERO.

Overrides:

decimalValue in class JsonNode

Returns:

BigDecimal value this node contains, if numeric node; BigDecimal.ZERO for non-number nodes.

bigIntegerValue

public abstract BigInteger bigIntegerValue()

Description copied from class: JsonNode

Returns integer value for this node (as BigDecimal), if and only if this node is numeric (JsonNode.isNumber() returns true). For other types returns BigInteger.ZERO.

Overrides:

bigIntegerValue in class JsonNode

Returns:

BigInteger value this node contains, if numeric node; BigInteger.ZERO for non-number nodes.

canConvertToInt

public abstract boolean canConvertToInt()

Description copied from class: JsonNode

Method that can be used to check whether this node is a numeric node (JsonNode.isNumber() would return true) AND its value fits within Java's 32-bit signed integer type, int. Note that floating-point numbers are convertible if the integral part fits without overflow (as per standard Java coercion rules)

NOTE: this method does not consider possible value type conversion from JSON String into Number; so even if this method returns false, it is possible that JsonNode.asInt() could still succeed if node is a JSON String representing integral number, or boolean.

Overrides:

canConvertToInt in class JsonNode

canConvertToLong

public abstract boolean canConvertToLong()

Description copied from class: JsonNode

Method that can be used to check whether this node is a numeric node (JsonNode.isNumber() would return true) AND its value fits within Java's 64-bit signed integer type, long. Note that floating-point numbers are convertible if the integral part fits without overflow (as per standard Java coercion rules)

NOTE: this method does not consider possible value type conversion from JSON String into Number; so even if this method returns false, it is possible that JsonNode.asLong() could still succeed if node is a JSON String representing integral number, or boolean.

Overrides:

canConvertToLong in class JsonNode

asText

public abstract 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

asInt

public final int asInt()

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), default value of 0 will be returned; no exceptions are thrown.

Overrides:

asInt in class JsonNode

asInt

public final 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 final long asLong()

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), default value of 0 will be returned; no exceptions are thrown.

Overrides:

asLong in class JsonNode

asLong

public final 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 final double asDouble()

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), default value of 0.0 will be returned; no exceptions are thrown.

Overrides:

asDouble in class JsonNode

asDouble

public final 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

isNaN

public boolean isNaN()

Convenience method for checking whether this node is a FloatNode or DoubleNode that contains "not-a-number" (NaN) value.

Since:

2.9