com.fasterxml.jackson.databind.ser

Class BeanSerializerFactory

java.lang.Object

com.fasterxml.jackson.databind.ser.SerializerFactory

com.fasterxml.jackson.databind.ser.BasicSerializerFactory

com.fasterxml.jackson.databind.ser.BeanSerializerFactory

All Implemented Interfaces:

Serializable

public class BeanSerializerFactory
extends BasicSerializerFactory
implements Serializable

Factory class that can provide serializers for any regular Java beans (as defined by "having at least one get method recognizable as bean accessor" -- where Object.getClass() does not count); as well as for "standard" JDK types. Latter is achieved by delegating calls to BasicSerializerFactory to find serializers both for "standard" JDK types (and in some cases, sub-classes as is the case for collection classes like Lists and Maps) and bean (value) classes.

Note about delegating calls to BasicSerializerFactory: although it would be nicer to use linear delegation for construction (to essentially dispatch all calls first to the underlying BasicSerializerFactory; or alternatively after failing to provide bean-based serializer}, there is a problem: priority levels for detecting standard types are mixed. That is, we want to check if a type is a bean after some of "standard" JDK types, but before the rest. As a result, "mixed" delegation used, and calls are NOT done using regular SerializerFactory interface but rather via direct calls to BasicSerializerFactory.

Finally, since all caching is handled by the serializer provider (not factory) and there is no configurability, this factory is stateless. This means that a global singleton instance can be used.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static BeanSerializerFactory	instance Like BasicSerializerFactory, this factory is stateless, and thus a single shared global (== singleton) instance can be used without thread-safety issues.

Fields inherited from class com.fasterxml.jackson.databind.ser.BasicSerializerFactory

_concrete, _concreteLazy, _factoryConfig

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BeanSerializerFactory(SerializerFactoryConfig config) Constructor for creating instances with specified configuration.

Method Summary

Modifier and Type	Method and Description
protected BeanPropertyWriter	_constructWriter(SerializerProvider prov, BeanPropertyDefinition propDef, PropertyBuilder pb, boolean staticTyping, AnnotatedMember accessor) Secondary helper method for constructing BeanPropertyWriter for given member (field or method).
protected JsonSerializer<?>	_createSerializer2(SerializerProvider prov, JavaType type, BeanDescription beanDesc, boolean staticTyping)
protected JsonSerializer<Object>	constructBeanSerializer(SerializerProvider prov, BeanDescription beanDesc) Method called to construct serializer for serializing specified bean type.
protected BeanSerializerBuilder	constructBeanSerializerBuilder(BeanDescription beanDesc)
protected BeanPropertyWriter	constructFilteredBeanWriter(BeanPropertyWriter writer, Class<?>[] inViews) Method called to construct a filtered writer, for given view definitions.
protected ObjectIdWriter	constructObjectIdHandler(SerializerProvider prov, BeanDescription beanDesc, List<BeanPropertyWriter> props)
protected PropertyBuilder	constructPropertyBuilder(SerializationConfig config, BeanDescription beanDesc)
JsonSerializer<Object>	createSerializer(SerializerProvider prov, JavaType origType) Main serializer constructor method.
protected Iterable<Serializers>	customSerializers()
protected List<BeanPropertyWriter>	filterBeanProperties(SerializationConfig config, BeanDescription beanDesc, List<BeanPropertyWriter> props) Overridable method that can filter out properties.
protected List<BeanPropertyWriter>	findBeanProperties(SerializerProvider prov, BeanDescription beanDesc, BeanSerializerBuilder builder) Method used to collect all actual serializable properties.
JsonSerializer<Object>	findBeanSerializer(SerializerProvider prov, JavaType type, BeanDescription beanDesc) Method that will try to construct a BeanSerializer for given class.
TypeSerializer	findPropertyContentTypeSerializer(JavaType containerType, SerializationConfig config, AnnotatedMember accessor) Method called to create a type information serializer for values of given container property if one is needed.
TypeSerializer	findPropertyTypeSerializer(JavaType baseType, SerializationConfig config, AnnotatedMember accessor) Method called to create a type information serializer for values of given non-container property if one is needed.
protected boolean	isPotentialBeanType(Class<?> type) Helper method used to skip processing for types that we know cannot be (i.e.
protected void	processViews(SerializationConfig config, BeanSerializerBuilder builder) Method called to handle view information for constructed serializer, based on bean property writers.
protected void	removeIgnorableTypes(SerializationConfig config, BeanDescription beanDesc, List<BeanPropertyDefinition> properties) Method that will apply by-type limitations (as per [JACKSON-429]); by default this is based on JsonIgnoreType annotation but can be supplied by module-provided introspectors too.
protected List<BeanPropertyWriter>	removeOverlappingTypeIds(SerializerProvider prov, BeanDescription beanDesc, BeanSerializerBuilder builder, List<BeanPropertyWriter> props) Helper method called to ensure that we do not have "duplicate" type ids.
protected void	removeSetterlessGetters(SerializationConfig config, BeanDescription beanDesc, List<BeanPropertyDefinition> properties) Helper method that will remove all properties that do not have a mutator.
SerializerFactory	withConfig(SerializerFactoryConfig config) Method used by module registration functionality, to attach additional serializer providers into this serializer factory.

Methods inherited from class com.fasterxml.jackson.databind.ser.BasicSerializerFactory

_checkMapContentInclusion, _findContentSerializer, _findInclusionWithContent, _findKeySerializer, buildArraySerializer, buildAtomicReferenceSerializer, buildCollectionSerializer, buildCollectionSerializer, buildContainerSerializer, buildEnumSerializer, buildEnumSetSerializer, buildIndexedListSerializer, buildIterableSerializer, buildIteratorSerializer, buildMapEntrySerializer, buildMapSerializer, createKeySerializer, createTypeSerializer, findConverter, findConvertingSerializer, findFilterId, findOptionalStdSerializer, findReferenceSerializer, findSerializerByAddonType, findSerializerByAnnotations, findSerializerByLookup, findSerializerByPrimaryType, findSerializerFromAnnotation, getFactoryConfig, isIndexedList, usesStaticTyping, withAdditionalKeySerializers, withAdditionalSerializers, withSerializerModifier

Methods inherited from class java.lang.Object

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

Field Detail

instance

public static final BeanSerializerFactory instance

Like BasicSerializerFactory, this factory is stateless, and thus a single shared global (== singleton) instance can be used without thread-safety issues.

Constructor Detail

BeanSerializerFactory

protected BeanSerializerFactory(SerializerFactoryConfig config)

Constructor for creating instances with specified configuration.

Method Detail

withConfig

public SerializerFactory withConfig(SerializerFactoryConfig config)

Method used by module registration functionality, to attach additional serializer providers into this serializer factory. This is typically handled by constructing a new instance with additional serializers, to ensure thread-safe access.

Specified by:

withConfig in class BasicSerializerFactory

customSerializers

protected Iterable<Serializers> customSerializers()

Specified by:

customSerializers in class BasicSerializerFactory

createSerializer

public JsonSerializer<Object> createSerializer(SerializerProvider prov,
                                               JavaType origType)
                                        throws JsonMappingException

Main serializer constructor method. We will have to be careful with respect to ordering of various method calls: essentially we want to reliably figure out which classes are standard types, and which are beans. The problem is that some bean Classes may implement standard interfaces (say, Iterable.

Note: sub-classes may choose to complete replace implementation, if they want to alter priority of serializer lookups.

Specified by:

createSerializer in class BasicSerializerFactory

Parameters:

prov - Provider that needs to be used to resolve annotation-provided serializers (but NOT for others)

Throws:

JsonMappingException

_createSerializer2

protected JsonSerializer<?> _createSerializer2(SerializerProvider prov,
                                               JavaType type,
                                               BeanDescription beanDesc,
                                               boolean staticTyping)
                                        throws JsonMappingException

Throws:

JsonMappingException

findBeanSerializer

public JsonSerializer<Object> findBeanSerializer(SerializerProvider prov,
                                                 JavaType type,
                                                 BeanDescription beanDesc)
                                          throws JsonMappingException

Method that will try to construct a BeanSerializer for given class. Returns null if no properties are found.

Throws:

JsonMappingException

findPropertyTypeSerializer

public TypeSerializer findPropertyTypeSerializer(JavaType baseType,
                                                 SerializationConfig config,
                                                 AnnotatedMember accessor)
                                          throws JsonMappingException

Method called to create a type information serializer for values of given non-container property if one is needed. If not needed (no polymorphic handling configured), should return null.

Parameters:

baseType - Declared type to use as the base type for type information serializer

Returns:

Type serializer to use for property values, if one is needed; null if not.

Throws:

JsonMappingException

findPropertyContentTypeSerializer

public TypeSerializer findPropertyContentTypeSerializer(JavaType containerType,
                                                        SerializationConfig config,
                                                        AnnotatedMember accessor)
                                                 throws JsonMappingException

Method called to create a type information serializer for values of given container property if one is needed. If not needed (no polymorphic handling configured), should return null.

Parameters:

containerType - Declared type of the container to use as the base type for type information serializer

Returns:

Type serializer to use for property value contents, if one is needed; null if not.

Throws:

JsonMappingException

constructBeanSerializer

protected JsonSerializer<Object> constructBeanSerializer(SerializerProvider prov,
                                                         BeanDescription beanDesc)
                                                  throws JsonMappingException

Method called to construct serializer for serializing specified bean type.

Throws:

JsonMappingException

Since:

2.1

constructObjectIdHandler

protected ObjectIdWriter constructObjectIdHandler(SerializerProvider prov,
                                                  BeanDescription beanDesc,
                                                  List<BeanPropertyWriter> props)
                                           throws JsonMappingException

Throws:

JsonMappingException

constructFilteredBeanWriter

protected BeanPropertyWriter constructFilteredBeanWriter(BeanPropertyWriter writer,
                                                         Class<?>[] inViews)

Method called to construct a filtered writer, for given view definitions. Default implementation constructs filter that checks active view type to views property is to be included in.

constructPropertyBuilder

protected PropertyBuilder constructPropertyBuilder(SerializationConfig config,
                                                   BeanDescription beanDesc)

constructBeanSerializerBuilder

protected BeanSerializerBuilder constructBeanSerializerBuilder(BeanDescription beanDesc)

isPotentialBeanType

protected boolean isPotentialBeanType(Class<?> type)

Helper method used to skip processing for types that we know cannot be (i.e. are never consider to be) beans: things like primitives, Arrays, Enums, and proxy types.

Note that usually we shouldn't really be getting these sort of types anyway; but better safe than sorry.

findBeanProperties

protected List<BeanPropertyWriter> findBeanProperties(SerializerProvider prov,
                                                      BeanDescription beanDesc,
                                                      BeanSerializerBuilder builder)
                                               throws JsonMappingException

Method used to collect all actual serializable properties. Can be overridden to implement custom detection schemes.

Throws:

JsonMappingException

filterBeanProperties

protected List<BeanPropertyWriter> filterBeanProperties(SerializationConfig config,
                                                        BeanDescription beanDesc,
                                                        List<BeanPropertyWriter> props)

Overridable method that can filter out properties. Default implementation checks annotations class may have.

processViews

protected void processViews(SerializationConfig config,
                            BeanSerializerBuilder builder)

Method called to handle view information for constructed serializer, based on bean property writers.

Note that this method is designed to be overridden by sub-classes if they want to provide custom view handling. As such it is not considered an internal implementation detail, and will be supported as part of API going forward.

removeIgnorableTypes

protected void removeIgnorableTypes(SerializationConfig config,
                                    BeanDescription beanDesc,
                                    List<BeanPropertyDefinition> properties)

Method that will apply by-type limitations (as per [JACKSON-429]); by default this is based on JsonIgnoreType annotation but can be supplied by module-provided introspectors too. Starting with 2.8 there are also "Config overrides" to consider.

removeSetterlessGetters

protected void removeSetterlessGetters(SerializationConfig config,
                                       BeanDescription beanDesc,
                                       List<BeanPropertyDefinition> properties)

Helper method that will remove all properties that do not have a mutator.

removeOverlappingTypeIds

protected List<BeanPropertyWriter> removeOverlappingTypeIds(SerializerProvider prov,
                                                            BeanDescription beanDesc,
                                                            BeanSerializerBuilder builder,
                                                            List<BeanPropertyWriter> props)

Helper method called to ensure that we do not have "duplicate" type ids. Added to resolve [databind#222]

Since:

2.6

_constructWriter

protected BeanPropertyWriter _constructWriter(SerializerProvider prov,
                                              BeanPropertyDefinition propDef,
                                              PropertyBuilder pb,
                                              boolean staticTyping,
                                              AnnotatedMember accessor)
                                       throws JsonMappingException

Secondary helper method for constructing BeanPropertyWriter for given member (field or method).

Throws:

JsonMappingException