com.fasterxml.jackson.databind.ser.std
Class NullSerializer

java.lang.Object
  com.fasterxml.jackson.databind.JsonSerializer<T>
      com.fasterxml.jackson.databind.ser.std.StdSerializer<Object>
          com.fasterxml.jackson.databind.ser.std.NullSerializer

All Implemented Interfaces:

SchemaAware

public class NullSerializer
extends StdSerializer<Object>

This is a simple dummy serializer that will just output literal JSON null value whenever serialization is requested. Used as the default "null serializer" (which is used for serializing null object references unless overridden), as well as for some more exotic types (java.lang.Void).

Nested Class Summary

Nested classes/interfaces inherited from class com.fasterxml.jackson.databind.JsonSerializer

JsonSerializer.None

Field Summary

static NullSerializer

instance

Fields inherited from class com.fasterxml.jackson.databind.ser.std.StdSerializer

_handledType

Method Summary

JsonNode	getSchema(SerializerProvider provider, Type typeHint) Default implementation simply claims type is "string"; usually overriden by custom serializers.
void	serialize(Object value, com.fasterxml.jackson.core.JsonGenerator jgen, SerializerProvider provider) Method that can be called to ask implementation to serialize values of type this serializer handles.

Methods inherited from class com.fasterxml.jackson.databind.ser.std.StdSerializer

createObjectNode, createSchemaNode, createSchemaNode, handledType, isDefaultSerializer, wrapAndThrow, wrapAndThrow

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

isEmpty, isUnwrappingSerializer, serializeWithType, unwrappingSerializer, usesObjectId

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

instance

public static final NullSerializer instance

Method Detail

serialize

public void serialize(Object value,
                      com.fasterxml.jackson.core.JsonGenerator jgen,
                      SerializerProvider provider)
               throws IOException,
                      com.fasterxml.jackson.core.JsonGenerationException

Description copied from class: JsonSerializer

Method that can be called to ask implementation to serialize values of type this serializer handles.

Specified by:

serialize in class StdSerializer<Object>

Parameters:

value - Value to serialize; can not be null.

jgen - Generator used to output resulting Json content

provider - Provider that can be used to get serializers for serializing Objects value contains, if any.

Throws:

IOException

com.fasterxml.jackson.core.JsonGenerationException

getSchema

public JsonNode getSchema(SerializerProvider provider,
                          Type typeHint)
                   throws JsonMappingException

Description copied from class: StdSerializer

Default implementation simply claims type is "string"; usually overriden by custom serializers.

Specified by:

getSchema in interface SchemaAware

Overrides:

getSchema in class StdSerializer<Object>

Parameters:

provider - The serializer provider.

typeHint - A hint about the type.

Returns:

Json-schema for this serializer.

Throws:

JsonMappingException