Top Description Fields Constructors Methods
com.fasterxml.jackson.databind.ser.std

public Class ToEmptyObjectSerializer

extends StdSerializer<Object>
Class Inheritance
Known Direct Subclasses
com.fasterxml.jackson.databind.ser.impl.UnknownSerializer
Annotations
@JacksonStdImpl
@SuppressWarnings:serial
Imports
java.io.IOException, java.lang.reflect.Type, com.fasterxml.jackson.core.JsonGenerator, .JsonToken, com.fasterxml.jackson.core.type.WritableTypeId, com.fasterxml.jackson.databind.JavaType, .JsonMappingException, .JsonNode, .SerializerProvider, com.fasterxml.jackson.databind.annotation.JacksonStdImpl, com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatVisitorWrapper, com.fasterxml.jackson.databind.jsontype.TypeSerializer

References Deprecated

StdSerializer is deprecated or references (maybe indirectly) at least one deprecated element.

See corresponding docs for further information.

Simple "bogus" serializer that will just serialize an empty Object for any given value. Quite similar to UnknownSerializer with the exception that serialization never fails.
Since
2.13

Field Summary

Inherited from com.fasterxml.jackson.databind.ser.std.StdSerializer:
_handledType

Constructor Summary

AccessConstructor and Description
protected
ToEmptyObjectSerializer(Class<?> raw)

public
ToEmptyObjectSerializer(JavaType type)

Method Summary

Modifier and TypeMethod and Description
public void
acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType
Type of element (entity like property) being visited
typeHint)

Overrides com.fasterxml.jackson.databind.ser.std.StdSerializer.acceptJsonFormatVisitor.

Implements com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatVisitable.acceptJsonFormatVisitor.

Default implementation specifies no format.

public JsonNode
getSchema(SerializerProvider
The serializer provider.
provider, Type
A hint about the type.
typeHint)

Overrides com.fasterxml.jackson.databind.ser.std.StdSerializer.getSchema.

Implements com.fasterxml.jackson.databind.jsonschema.SchemaAware.getSchema.

Deprecated Since 2.15

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

public boolean
isEmpty(SerializerProvider provider, Object value)

Overrides com.fasterxml.jackson.databind.JsonSerializer.isEmpty.

Method called to check whether given serializable value is considered "empty" value (for purposes of suppressing serialization of empty values).

public void
serialize(Object
Value to serialize; can not be null.
value, JsonGenerator
Generator used to output resulting Json content
gen, SerializerProvider
Provider that can be used to get serializers for serializing Objects value contains, if any.
ctxt)

Implements abstract com.fasterxml.jackson.databind.ser.std.StdSerializer.serialize.

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

public void
serializeWithType(Object
Value to serialize; can not be null.
value, JsonGenerator
Generator used to output resulting Json content
gen, SerializerProvider
Provider that can be used to get serializers for serializing Objects value contains, if any.
ctxt, TypeSerializer
Type serializer to use for including type information
typeSer)

Overrides com.fasterxml.jackson.databind.JsonSerializer.serializeWithType.

Method that can be called to ask implementation to serialize values of type this serializer handles, using specified type serializer for embedding necessary type information.

Inherited from com.fasterxml.jackson.databind.ser.std.StdSerializer:
_neitherNull_nonEmptycreateSchemaNodecreateSchemaNodefindAnnotatedContentSerializerfindContextualConvertingSerializerfindConvertingContentSerializerfindFormatFeaturefindFormatOverridesfindIncludeOverridesfindPropertyFiltergetSchemahandledTypeisDefaultSerializervisitArrayFormatvisitArrayFormatvisitFloatFormatvisitIntFormatvisitIntFormatvisitStringFormatvisitStringFormatwrapAndThrowwrapAndThrow

Constructor Detail

ToEmptyObjectSerializerback to summary
protected ToEmptyObjectSerializer(Class<?> raw)
ToEmptyObjectSerializerback to summary
public ToEmptyObjectSerializer(JavaType type)

Method Detail

acceptJsonFormatVisitorback to summary
public void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType typeHint) throws JsonMappingException

Overrides com.fasterxml.jackson.databind.ser.std.StdSerializer.acceptJsonFormatVisitor.

Implements com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatVisitable.acceptJsonFormatVisitor.

Doc from com.fasterxml.jackson.databind.ser.std.StdSerializer.acceptJsonFormatVisitor.

Default implementation specifies no format. This behavior is usually overriden by custom serializers.

Parameters
typeHint:JavaType

Doc from com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatVisitable.acceptJsonFormatVisitor.

Type of element (entity like property) being visited

Annotations
@Override
getSchemaback to summary
public JsonNode getSchema(SerializerProvider provider, Type typeHint) throws JsonMappingException

Overrides com.fasterxml.jackson.databind.ser.std.StdSerializer.getSchema.

Implements com.fasterxml.jackson.databind.jsonschema.SchemaAware.getSchema.

Doc from com.fasterxml.jackson.databind.ser.std.StdSerializer.getSchema.

Deprecated

Since 2.15

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

Parameters
provider:SerializerProvider

Doc from com.fasterxml.jackson.databind.jsonschema.SchemaAware.getSchema.

The serializer provider.

typeHint:Type

Doc from com.fasterxml.jackson.databind.jsonschema.SchemaAware.getSchema.

A hint about the type.

Returns:JsonNode

Doc from com.fasterxml.jackson.databind.jsonschema.SchemaAware.getSchema.

Json-schema for this serializer.

Annotations
@Deprecated
@Override
isEmptyback to summary
public boolean isEmpty(SerializerProvider provider, Object value)

Overrides com.fasterxml.jackson.databind.JsonSerializer.isEmpty.

Doc from com.fasterxml.jackson.databind.JsonSerializer.isEmpty.

Method called to check whether given serializable value is considered "empty" value (for purposes of suppressing serialization of empty values).

Default implementation will consider only null values to be empty.

Note

replaces isEmpty(Object), which was deprecated in 2.5

Annotations
@Override
serializeback to summary
public void serialize(Object value, JsonGenerator gen, SerializerProvider ctxt) throws IOException

Implements abstract com.fasterxml.jackson.databind.ser.std.StdSerializer.serialize.

Doc from com.fasterxml.jackson.databind.JsonSerializer.serialize.

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

Parameters
value:Object

Value to serialize; can not be null.

gen:JsonGenerator

Generator used to output resulting Json content

ctxt:SerializerProvider

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

Annotations
@Override
serializeWithTypeback to summary
public void serializeWithType(Object value, JsonGenerator gen, SerializerProvider ctxt, TypeSerializer typeSer) throws IOException

Overrides com.fasterxml.jackson.databind.JsonSerializer.serializeWithType.

Doc from com.fasterxml.jackson.databind.JsonSerializer.serializeWithType.

Method that can be called to ask implementation to serialize values of type this serializer handles, using specified type serializer for embedding necessary type information.

Default implementation will throw UnsupportedOperationException to indicate that proper type handling needs to be implemented.

For simple datatypes written as a single scalar value (JSON String, Number, Boolean), implementation would look like: 

  // note: method to call depends on whether this type is serialized as JSON scalar, object or Array!
  typeSer.writeTypePrefixForScalar(value, gen);
  serialize(value, gen, provider);
  typeSer.writeTypeSuffixForScalar(value, gen);
and implementations for type serialized as JSON Arrays or Objects would differ slightly, as START-ARRAY/END-ARRAY and START-OBJECT/END-OBJECT pairs need to be properly handled with respect to serializing of contents.
Parameters
value:Object

Value to serialize; can not be null.

gen:JsonGenerator

Generator used to output resulting Json content

ctxt:SerializerProvider

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

typeSer:TypeSerializer

Type serializer to use for including type information

Annotations
@Override