JsonValueSerializer (jackson-databind 2.15.2)

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

All Implemented Interfaces:

JsonFormatVisitable, SchemaAware, ContextualSerializer, Serializable
```
public class JsonValueSerializer
extends StdSerializer<Object>
implements ContextualSerializer, JsonFormatVisitable
```
Serializer class that can serialize Object that have a JsonValue annotation to indicate that serialization should be done by calling the method annotated, and serializing result it returns.
Implementation note: we will post-process resulting serializer (much like what is done with BeanSerializer) to figure out actual serializers for final types. This must be done from createContextual(com.fasterxml.jackson.databind.SerializerProvider, com.fasterxml.jackson.databind.BeanProperty) method, and NOT from constructor; otherwise we could end up with an infinite loop.

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class com.fasterxml.jackson.databind.JsonSerializer
  JsonSerializer.None

Field Summary

Fields
Modifier and Type	Field and Description
`protected AnnotatedMember`	`_accessor`
`protected PropertySerializerMap`	`_dynamicSerializers` If value type cannot be statically determined, mapping from runtime value types to serializers are cached in this object.
`protected boolean`	`_forceTypeInformation` This is a flag that is set in rare (?) cases where this serializer is used for "natural" types (boolean, int, String, double); and where we actually must force type information wrapping, even though one would not normally be added.
`protected BeanProperty`	`_property`
`protected JsonSerializer<Object>`	`_valueSerializer`
`protected JavaType`	`_valueType` Declared type of the value accessed, as declared by accessor.
`protected TypeSerializer`	`_valueTypeSerializer`

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

Constructor Summary

Constructors
Constructor and Description
`JsonValueSerializer(AnnotatedMember accessor, JsonSerializer<?> ser)` Deprecated. Since 2.12
`JsonValueSerializer(AnnotatedMember accessor, TypeSerializer vts, JsonSerializer<?> ser)`
`JsonValueSerializer(JsonValueSerializer src, BeanProperty property, TypeSerializer vts, JsonSerializer<?> ser, boolean forceTypeInfo)`

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`protected boolean`	`_acceptJsonFormatVisitorForEnum(JsonFormatVisitorWrapper visitor, JavaType typeHint, Class<?> enumType)` Overridable helper method used for special case handling of schema information for Enums.
`protected JsonSerializer<Object>`	`_findDynamicSerializer(SerializerProvider ctxt, Class<?> valueClass)`
`void`	`acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType typeHint)` Default implementation specifies no format.
`JsonSerializer<?>`	`createContextual(SerializerProvider ctxt, BeanProperty property)` We can try to find the actual serializer for value, if we can statically figure out what the result type must be.
`JsonNode`	`getSchema(SerializerProvider ctxt, Type typeHint)` Deprecated. Since 2.15
`boolean`	`isEmpty(SerializerProvider ctxt, Object bean)` Method called to check whether given serializable value is considered "empty" value (for purposes of suppressing serialization of empty values).
`protected boolean`	`isNaturalTypeWithStdHandling(Class<?> rawType, JsonSerializer<?> ser)`
`void`	`serialize(Object bean, JsonGenerator gen, SerializerProvider ctxt)` Method that can be called to ask implementation to serialize values of type this serializer handles.
`void`	`serializeWithType(Object bean, JsonGenerator gen, SerializerProvider ctxt, TypeSerializer typeSer0)` 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.
`String`	`toString()`
`protected JsonValueSerializer`	`withResolved(BeanProperty property, TypeSerializer vts, JsonSerializer<?> ser, boolean forceTypeInfo)`

Methods inherited from class com.fasterxml.jackson.databind.ser.std.StdSerializer
_neitherNull, _nonEmpty, createSchemaNode, createSchemaNode, findAnnotatedContentSerializer, findContextualConvertingSerializer, findConvertingContentSerializer, findFormatFeature, findFormatOverrides, findIncludeOverrides, findPropertyFilter, getSchema, handledType, isDefaultSerializer, visitArrayFormat, visitArrayFormat, visitFloatFormat, visitIntFormat, visitIntFormat, visitStringFormat, visitStringFormat, wrapAndThrow, wrapAndThrow

Methods inherited from class com.fasterxml.jackson.databind.JsonSerializer
getDelegatee, isEmpty, isUnwrappingSerializer, properties, replaceDelegatee, unwrappingSerializer, usesObjectId, withFilterId

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - _accessor
```
protected final AnnotatedMember _accessor
```
    Since:
    
    2.9
  - _valueTypeSerializer
```
protected final TypeSerializer _valueTypeSerializer
```
    Since:
    
    2.12
  - _valueSerializer
```
protected final JsonSerializer<Object> _valueSerializer
```
  - _property
```
protected final BeanProperty _property
```
  - _valueType
```
protected final JavaType _valueType
```
    Declared type of the value accessed, as declared by accessor.
    
    Since:
    
    2.12
  - _forceTypeInformation
```
protected final boolean _forceTypeInformation
```
    This is a flag that is set in rare (?) cases where this serializer is used for "natural" types (boolean, int, String, double); and where we actually must force type information wrapping, even though one would not normally be added.
  - _dynamicSerializers
```
protected transient PropertySerializerMap _dynamicSerializers
```
    If value type cannot be statically determined, mapping from runtime value types to serializers are cached in this object.
    
    Since:
    
    2.12
- Constructor Detail
  - JsonValueSerializer
```
public JsonValueSerializer(AnnotatedMember accessor,
                           TypeSerializer vts,
                           JsonSerializer<?> ser)
```
    Parameters:
    
    ser - Explicit serializer to use, if caller knows it (which occurs if and only if the "value method" was annotated with JsonSerialize.using()), otherwise null
    
    Since:
    
    2.12 added TypeSerializer since 2.11
  - JsonValueSerializer
```
@Deprecated
public JsonValueSerializer(AnnotatedMember accessor,
                                       JsonSerializer<?> ser)
```
    Deprecated. Since 2.12
  - JsonValueSerializer
```
public JsonValueSerializer(JsonValueSerializer src,
                           BeanProperty property,
                           TypeSerializer vts,
                           JsonSerializer<?> ser,
                           boolean forceTypeInfo)
```
- Method Detail
  - withResolved
```
protected JsonValueSerializer withResolved(BeanProperty property,
                                           TypeSerializer vts,
                                           JsonSerializer<?> ser,
                                           boolean forceTypeInfo)
```
  - isEmpty
```
public boolean isEmpty(SerializerProvider ctxt,
                       Object bean)
```
    Description copied from class: JsonSerializer
    
    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 JsonSerializer.isEmpty(Object), which was deprecated in 2.5
    
    Overrides:
    
    isEmpty in class JsonSerializer<Object>
  - createContextual
```
public JsonSerializer<?> createContextual(SerializerProvider ctxt,
                                          BeanProperty property)
                                   throws JsonMappingException
```
    We can try to find the actual serializer for value, if we can statically figure out what the result type must be.
    
    Specified by:
    
    createContextual in interface ContextualSerializer
    
    Parameters:
    
    ctxt - Serializer provider to use for accessing config, other serializers
    
    property - Method or field that represents the property (and is used to access value to serialize). Should be available; but there may be cases where caller cannot provide it and null is passed instead (in which case impls usually pass 'this' serializer as is)
    
    Returns:
    
    Serializer to use for serializing values of specified property; may be this instance or a new instance.
    
    Throws:
    
    JsonMappingException
  - serialize
```
public void serialize(Object bean,
                      JsonGenerator gen,
                      SerializerProvider ctxt)
               throws IOException
```
    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:
    
    bean - Value to serialize; can not be null.
    
    gen - Generator used to output resulting Json content
    
    ctxt - Provider that can be used to get serializers for serializing Objects value contains, if any.
    
    Throws:
    
    IOException
  - serializeWithType
```
public void serializeWithType(Object bean,
                              JsonGenerator gen,
                              SerializerProvider ctxt,
                              TypeSerializer typeSer0)
                       throws IOException
```
    Description copied from class: JsonSerializer
    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.
    Overrides:
    
    serializeWithType in class JsonSerializer<Object>
    
    Parameters:
    
    bean - Value to serialize; can not be null.
    
    gen - Generator used to output resulting Json content
    
    ctxt - Provider that can be used to get serializers for serializing Objects value contains, if any.
    
    typeSer0 - Type serializer to use for including type information
    
    Throws:
    
    IOException
  - getSchema
```
@Deprecated
public JsonNode getSchema(SerializerProvider ctxt,
                                      Type typeHint)
                               throws JsonMappingException
```
    Deprecated. Since 2.15
    
    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:
    
    ctxt - The serializer provider.
    
    typeHint - A hint about the type.
    
    Returns:
    
    Json-schema for this serializer.
    
    Throws:
    
    JsonMappingException
  - acceptJsonFormatVisitor
```
public void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor,
                                    JavaType typeHint)
                             throws JsonMappingException
```
    Description copied from class: StdSerializer
    
    Default implementation specifies no format. This behavior is usually overriden by custom serializers.
    
    Specified by:
    
    acceptJsonFormatVisitor in interface JsonFormatVisitable
    
    Overrides:
    
    acceptJsonFormatVisitor in class StdSerializer<Object>
    
    typeHint - Type of element (entity like property) being visited
    
    Throws:
    
    JsonMappingException
  - _acceptJsonFormatVisitorForEnum
```
protected boolean _acceptJsonFormatVisitorForEnum(JsonFormatVisitorWrapper visitor,
                                                  JavaType typeHint,
                                                  Class<?> enumType)
                                           throws JsonMappingException
```
    Overridable helper method used for special case handling of schema information for Enums.
    
    Returns:
    
    True if method handled callbacks; false if not; in latter case caller will send default callbacks
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.6
  - isNaturalTypeWithStdHandling
```
protected boolean isNaturalTypeWithStdHandling(Class<?> rawType,
                                               JsonSerializer<?> ser)
```
  - _findDynamicSerializer
```
protected JsonSerializer<Object> _findDynamicSerializer(SerializerProvider ctxt,
                                                        Class<?> valueClass)
                                                 throws JsonMappingException
```
    Throws:
    
    JsonMappingException
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Class JsonValueSerializer

Nested Class Summary

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

Field Summary

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

Constructor Summary

Method Summary

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

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

Methods inherited from class java.lang.Object

Field Detail

_accessor

_valueTypeSerializer

_valueSerializer

_property

_valueType

_forceTypeInformation

_dynamicSerializers

Constructor Detail

JsonValueSerializer

JsonValueSerializer

JsonValueSerializer

Method Detail

withResolved

isEmpty

createContextual

serialize

serializeWithType

getSchema

acceptJsonFormatVisitor

_acceptJsonFormatVisitorForEnum

isNaturalTypeWithStdHandling

_findDynamicSerializer

toString