@Target(value={ANNOTATION_TYPE,METHOD,FIELD,TYPE,PARAMETER}) @Retention(value=RUNTIME) public @interface JsonSerialize
An example annotation would be:
@JsonSerialize(using=MySerializer.class, as=MySubClass.class, typing=JsonSerialize.Typing.STATIC )(which would be redundant, since some properties block others: specifically, 'using' has precedence over 'as', which has precedence over 'typing' setting)
Modifier and Type | Optional Element and Description |
---|---|
Class<?> |
as
Supertype (of declared type, which itself is supertype of runtime type)
to use as type when locating serializer to use.
|
Class<?> |
contentAs
Concrete type to serialize content value (elements
of a Collection/array, values of Maps) as,
instead of type otherwise declared.
|
Class<? extends Converter> |
contentConverter
Similar to
converter() , but used for values of structures types
(List, arrays, Maps). |
Class<? extends JsonSerializer> |
contentUsing
Serializer class to use for serializing contents (elements
of a Collection/array, values of Maps) of annotated property.
|
Class<? extends Converter> |
converter
Which helper object is to be used to convert type into something
that Jackson knows how to serialize; either because base type
cannot be serialized easily, or just to alter serialization.
|
JsonSerialize.Inclusion |
include
Deprecated.
As of Jackson 2.0, this annotation has been replaced
by
JsonInclude |
Class<?> |
keyAs
Concrete type to serialize keys of
Map as,
instead of type otherwise declared. |
Class<? extends JsonSerializer> |
keyUsing
Serializer class to use for serializing Map keys
of annotated property.
|
Class<? extends JsonSerializer> |
nullsUsing
Serializer class to use for serializing nulls for properties that
are annotated, instead of the
default null serializer.
|
JsonSerialize.Typing |
typing
Whether type detection used is dynamic or static: that is,
whether actual runtime type is used (dynamic), or just the
declared type (static).
|
Class<? extends JsonSerializer> |
using
Serializer class to use for
serializing associated value.
|
public abstract Class<? extends JsonSerializer> using
public abstract Class<? extends JsonSerializer> contentUsing
public abstract Class<? extends JsonSerializer> keyUsing
public abstract Class<? extends JsonSerializer> nullsUsing
public abstract Class<?> as
Bogus type Void
can be used to indicate that declared
type is used as is (i.e. this annotation property has no setting);
this since annotation properties are not allowed to have null value.
Note: if using()
is also used it has precedence
(since it directly specifies
serializer, whereas this would only be used to locate the
serializer)
and value of this annotation property is ignored.
public abstract Class<?> contentAs
public abstract JsonSerialize.Typing typing
Note that Jackson 2.3 changed default to DEFAULT_TYPING
,
which is roughly same as saying "whatever".
This is important as it allows avoiding accidental overrides
at property level.
public abstract Class<? extends Converter> converter
public abstract Class<? extends Converter> contentConverter
converter()
, but used for values of structures types
(List, arrays, Maps).
Note that this property does NOT have effect when used as Class annotation;
it can only be used as property annotation: this because association between
container and value types is loose and as such converters seldom make sense
for such usage.@Deprecated public abstract JsonSerialize.Inclusion include
JsonInclude
This property has been replaced by special-purpose JsonInclude
annotation, introduced in Jackson 2.0.
Note that Jackson 2.3 changed default to DEFAULT_INCLUSION
,
which is roughly same as saying "whatever". This is important because
it allows hierarchic default values to be used.
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