public final class NullNode extends ValueNode
Modifier and Type | Field and Description |
---|---|
static NullNode |
instance |
NO_NODES, NO_STRINGS
Modifier and Type | Method and Description |
---|---|
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 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 |
equals(Object o)
Equality for node objects is defined as full (deep) value
equality.
|
static NullNode |
getInstance() |
boolean |
isNull()
Method that can be used to check if this node was created from
Json liternal null value.
|
void |
serialize(JsonGenerator jg,
SerializerProvider provider)
Method called to serialize node instances using given generator.
|
isValueNode, path, path, serializeWithType, toString
findParent, findParents, findPath, findValue, findValues, findValuesAsText, getNumberType, traverse
asBoolean, asBoolean, asDouble, asInt, asLong, findParents, findValues, findValuesAsText, get, get, getBigIntegerValue, getBinaryValue, getBooleanValue, getDecimalValue, getDoubleValue, getElements, getFieldNames, getFields, getIntValue, getLongValue, getNumberValue, getPath, getPath, getTextValue, getValueAsBoolean, getValueAsBoolean, getValueAsDouble, getValueAsDouble, getValueAsInt, getValueAsInt, getValueAsLong, getValueAsLong, getValueAsText, has, has, isArray, isBigDecimal, isBigInteger, isBinary, isBoolean, isContainerNode, isDouble, isFloatingPointNumber, isInt, isIntegralNumber, isLong, isMissingNode, isNumber, isObject, isPojo, isTextual, iterator, size, with
public static final NullNode instance
public static NullNode getInstance()
public JsonToken asToken()
BaseJsonNode
JsonToken
that equivalent
stream event would produce (for most nodes there is just
one token but for structured/container types multiple)public boolean isNull()
JsonNode
public String asText()
JsonNode
JsonNode.isValueNode()
returns true), otherwise
empty String.public int asInt(int defaultValue)
JsonNode
If representation can not be converted to an int (including structured types like Objects and Arrays), specified defaultValue will be returned; no exceptions are thrown.
public long asLong(long defaultValue)
JsonNode
If representation can not be converted to an long (including structured types like Objects and Arrays), specified defaultValue will be returned; no exceptions are thrown.
public double asDouble(double defaultValue)
JsonNode
If representation can not be converted to an int (including structured types like Objects and Arrays), specified defaultValue will be returned; no exceptions are thrown.
public final void serialize(JsonGenerator jg, SerializerProvider provider) throws IOException, JsonProcessingException
BaseJsonNode
serialize
in interface JsonSerializable
serialize
in class BaseJsonNode
IOException
JsonProcessingException
public boolean equals(Object o)
JsonNode
Note: marked as abstract to ensure all implementation
classes define it properly and not rely on definition
from Object
.