public class JsonValueSerializer extends StdSerializer<Object> implements ContextualSerializer, JsonFormatVisitable, SchemaAware
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.JsonSerializer.None| Modifier and Type | Field and Description |
|---|---|
protected Method |
_accessorMethod |
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 |
_handledType| Constructor and Description |
|---|
JsonValueSerializer(JsonValueSerializer src,
BeanProperty property,
JsonSerializer<?> ser,
boolean forceTypeInfo) |
JsonValueSerializer(Method valueMethod,
JsonSerializer<Object> ser) |
| Modifier and Type | Method and Description |
|---|---|
void |
acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor,
JavaType typeHint)
Default implementation specifies no format.
|
JsonSerializer<?> |
createContextual(SerializerProvider provider,
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 provider,
Type typeHint)
Default implementation simply claims type is "string"; usually
overriden by custom serializers.
|
protected boolean |
isNaturalTypeWithStdHandling(Class<?> rawType,
JsonSerializer<?> ser) |
void |
serialize(Object bean,
JsonGenerator jgen,
SerializerProvider prov)
Method that can be called to ask implementation to serialize
values of type this serializer handles.
|
void |
serializeWithType(Object bean,
JsonGenerator jgen,
SerializerProvider provider,
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() |
JsonValueSerializer |
withResolved(BeanProperty property,
JsonSerializer<?> ser,
boolean forceTypeInfo) |
createObjectNode, createSchemaNode, createSchemaNode, findConvertingContentSerializer, getSchema, handledType, isDefaultSerializer, wrapAndThrow, wrapAndThrowgetDelegatee, isEmpty, isUnwrappingSerializer, replaceDelegatee, unwrappingSerializer, usesObjectIdclone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, waitgetSchemaprotected final Method _accessorMethod
protected final JsonSerializer<Object> _valueSerializer
protected final BeanProperty _property
protected final boolean _forceTypeInformation
public JsonValueSerializer(Method valueMethod, JsonSerializer<Object> ser)
ser - Explicit serializer to use, if caller knows it (which
occurs if and only if the "value method" was annotated with
JsonSerialize.using()), otherwise
nullpublic JsonValueSerializer(JsonValueSerializer src, BeanProperty property, JsonSerializer<?> ser, boolean forceTypeInfo)
public JsonValueSerializer withResolved(BeanProperty property, JsonSerializer<?> ser, boolean forceTypeInfo)
public JsonSerializer<?> createContextual(SerializerProvider provider, BeanProperty property) throws JsonMappingException
createContextual in interface ContextualSerializerprovider - Serializer provider to use for accessing config, other serializersproperty - 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 can not provide it and
null is passed instead (in which case impls usually pass 'this' serializer as is)JsonMappingExceptionpublic void serialize(Object bean, JsonGenerator jgen, SerializerProvider prov) throws IOException, JsonGenerationException
JsonSerializerserialize in class StdSerializer<Object>bean - Value to serialize; can not be null.jgen - Generator used to output resulting Json contentprov - Provider that can be used to get serializers for
serializing Objects value contains, if any.IOExceptionJsonGenerationExceptionpublic void serializeWithType(Object bean, JsonGenerator jgen, SerializerProvider provider, TypeSerializer typeSer0) throws IOException, JsonProcessingException
JsonSerializer
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, jgen); serialize(value, jgen, provider); typeSer.writeTypeSuffixForScalar(value, jgen);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.serializeWithType in class JsonSerializer<Object>bean - Value to serialize; can not be null.jgen - Generator used to output resulting Json contentprovider - Provider that can be used to get serializers for
serializing Objects value contains, if any.typeSer0 - Type serializer to use for including type informationIOExceptionJsonProcessingExceptionpublic JsonNode getSchema(SerializerProvider provider, Type typeHint) throws JsonMappingException
StdSerializergetSchema in interface SchemaAwaregetSchema in class StdSerializer<Object>provider - The serializer provider.typeHint - A hint about the type.JsonMappingExceptionpublic void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType typeHint) throws JsonMappingException
StdSerializeracceptJsonFormatVisitor in interface JsonFormatVisitableacceptJsonFormatVisitor in class StdSerializer<Object>typeHint - Type of element (entity like property) being visitedJsonMappingExceptionprotected boolean isNaturalTypeWithStdHandling(Class<?> rawType, JsonSerializer<?> ser)
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