com.fasterxml.jackson.databind.cfg

Class MapperBuilder<M extends ObjectMapper,B extends MapperBuilder<M,B>>

java.lang.Object

com.fasterxml.jackson.databind.cfg.MapperBuilder<M,B>

Direct Known Subclasses:

JsonMapper.Builder

public abstract class MapperBuilder<M extends ObjectMapper,B extends MapperBuilder<M,B>>
extends Object

Jackson 3 will introduce fully immutable, builder-based system for constructing ObjectMappers. Same can not be done with 2.10 for backwards-compatibility reasons; but we can offer sort of "fake" builder, which simply encapsulates configuration calls. The main (and only) point is to allow gradual upgrade.

Since:

2.10

Field Summary

Fields

Modifier and Type	Field and Description
protected M	_mapper

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MapperBuilder(M mapper)

Method Summary

Modifier and Type	Method and Description
protected B	_this()
B	activateDefaultTyping(PolymorphicTypeValidator subtypeValidator) Convenience method that is equivalent to calling
B	activateDefaultTyping(PolymorphicTypeValidator subtypeValidator, ObjectMapper.DefaultTyping dti) Convenience method that is equivalent to calling
B	activateDefaultTyping(PolymorphicTypeValidator subtypeValidator, ObjectMapper.DefaultTyping applicability, JsonTypeInfo.As includeAs) Method for enabling automatic inclusion of type information, needed for proper deserialization of polymorphic types (unless types have been annotated with JsonTypeInfo).
B	activateDefaultTypingAsProperty(PolymorphicTypeValidator subtypeValidator, ObjectMapper.DefaultTyping applicability, String propertyName) Method for enabling automatic inclusion of type information -- needed for proper deserialization of polymorphic types (unless types have been annotated with JsonTypeInfo) -- using "As.PROPERTY" inclusion mechanism and specified property name to use for inclusion (default being "@class" since default type information always uses class name as type identifier)
B	addHandler(DeserializationProblemHandler h) Method used for adding a DeserializationProblemHandler for this builder, at the head of the list (meaning it has priority over handler registered earlier).
B	addMixIn(Class<?> target, Class<?> mixinSource) Method to use for defining mix-in annotations to use for augmenting annotations that classes have, for purpose of configuration serialization and/or deserialization processing.
B	addModule(Module module)
B	addModules(Iterable<? extends Module> modules)
B	addModules(Module... modules)
B	annotationIntrospector(AnnotationIntrospector intr) Method for replacing AnnotationIntrospector used by the mapper instance to be built.
M	build() Method to call to create actual mapper instance.
B	clearProblemHandlers() Method that may be used to remove all DeserializationProblemHandlers added to this builder (if any).
B	configure(DeserializationFeature feature, boolean state)
B	configure(JsonGenerator.Feature feature, boolean state)
B	configure(JsonParser.Feature feature, boolean state)
B	configure(MapperFeature feature, boolean state)
B	configure(SerializationFeature feature, boolean state)
B	configure(StreamReadFeature feature, boolean state)
B	configure(StreamWriteFeature feature, boolean state)
B	deactivateDefaultTyping() Method for disabling automatic inclusion of type information; if so, only explicitly annotated types (ones with JsonTypeInfo) will have additional embedded type information.
B	defaultBase64Variant(Base64Variant v) Method that will configure default Base64Variant that byte[] serializers and deserializers will use.
B	defaultDateFormat(DateFormat df) Method for configuring the default DateFormat to use when serializing time values as Strings, and deserializing from JSON Strings.
B	defaultLeniency(Boolean b) Method for setting default Setter configuration, regarding things like merging, null-handling; used for properties for which there are no per-type or per-property overrides (via annotations or config overrides).
B	defaultLocale(Locale locale) Method for overriding default locale to use for formatting.
B	defaultMergeable(Boolean b) Method for setting default Setter configuration, regarding things like merging, null-handling; used for properties for which there are no per-type or per-property overrides (via annotations or config overrides).
B	defaultPrettyPrinter(PrettyPrinter pp)
B	defaultSetterInfo(JsonSetter.Value v)
B	defaultTimeZone(TimeZone tz) Method for overriding default TimeZone to use for formatting.
B	disable(DeserializationFeature... features)
B	disable(JsonGenerator.Feature... features)
B	disable(JsonParser.Feature... features)
B	disable(MapperFeature... features)
B	disable(SerializationFeature... features)
B	disable(StreamReadFeature... features)
B	disable(StreamWriteFeature... features)
B	enable(DeserializationFeature... features)
B	enable(JsonGenerator.Feature... features)
B	enable(JsonParser.Feature... features)
B	enable(MapperFeature... features)
B	enable(SerializationFeature... features)
B	enable(StreamReadFeature... features)
B	enable(StreamWriteFeature... features)
B	filterProvider(FilterProvider prov) Method for configuring this mapper to use specified FilterProvider for mapping Filter Ids to actual filter instances.
B	findAndAddModules() Convenience method that is functionally equivalent to: addModules(builder.findModules());
static List<Module>	findModules() Method for locating available methods, using JDK ServiceLoader facility, along with module-provided SPI.
static List<Module>	findModules(ClassLoader classLoader) Method for locating available methods, using JDK ServiceLoader facility, along with module-provided SPI.
B	handlerInstantiator(HandlerInstantiator hi) Method for configuring HandlerInstantiator to use for creating instances of handlers (such as serializers, deserializers, type and type id resolvers), given a class.
B	injectableValues(InjectableValues v)
boolean	isEnabled(DeserializationFeature f)
boolean	isEnabled(JsonGenerator.Feature f)
boolean	isEnabled(JsonParser.Feature f)
boolean	isEnabled(MapperFeature f)
boolean	isEnabled(SerializationFeature f)
B	nodeFactory(JsonNodeFactory f)
B	polymorphicTypeValidator(PolymorphicTypeValidator ptv) Method for assigning PolymorphicTypeValidator to use for validating subtypes when using Class name - based polymorphic deserialization using annotations (validator used with "Default Typing" is specified by passing in activateDefaultTyping(PolymorphicTypeValidator) instead).
B	propertyNamingStrategy(PropertyNamingStrategy s)
B	registerSubtypes(Class<?>... subtypes)
B	registerSubtypes(Collection<Class<?>> subtypes)
B	registerSubtypes(NamedType... subtypes)
B	serializationInclusion(JsonInclude.Include incl)
B	serializerFactory(SerializerFactory f)
TokenStreamFactory	streamFactory()
B	subtypeResolver(SubtypeResolver r)
B	typeFactory(TypeFactory f)
B	visibility(PropertyAccessor forMethod, JsonAutoDetect.Visibility visibility)
B	visibility(VisibilityChecker<?> vc)

Methods inherited from class java.lang.Object

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

Field Detail

_mapper

protected final M extends ObjectMapper _mapper

Constructor Detail

MapperBuilder

protected MapperBuilder(M mapper)

Method Detail

build

public M build()

Method to call to create actual mapper instance.

Implementation detail: in 2.10 (but not 3.x) underlying mapper is eagerly constructed when builder is constructed, and method simply returns that instance.

isEnabled

public boolean isEnabled(MapperFeature f)

isEnabled

public boolean isEnabled(DeserializationFeature f)

isEnabled

public boolean isEnabled(SerializationFeature f)

isEnabled

public boolean isEnabled(JsonParser.Feature f)

isEnabled

public boolean isEnabled(JsonGenerator.Feature f)

streamFactory

public TokenStreamFactory streamFactory()

enable

public B enable(MapperFeature... features)

disable

public B disable(MapperFeature... features)

configure

public B configure(MapperFeature feature,
                   boolean state)

enable

public B enable(SerializationFeature... features)

disable

public B disable(SerializationFeature... features)

configure

public B configure(SerializationFeature feature,
                   boolean state)

enable

public B enable(DeserializationFeature... features)

disable

public B disable(DeserializationFeature... features)

configure

public B configure(DeserializationFeature feature,
                   boolean state)

enable

public B enable(JsonParser.Feature... features)

disable

public B disable(JsonParser.Feature... features)

configure

public B configure(JsonParser.Feature feature,
                   boolean state)

enable

public B enable(JsonGenerator.Feature... features)

disable

public B disable(JsonGenerator.Feature... features)

configure

public B configure(JsonGenerator.Feature feature,
                   boolean state)

enable

public B enable(StreamReadFeature... features)

disable

public B disable(StreamReadFeature... features)

configure

public B configure(StreamReadFeature feature,
                   boolean state)

enable

public B enable(StreamWriteFeature... features)

disable

public B disable(StreamWriteFeature... features)

configure

public B configure(StreamWriteFeature feature,
                   boolean state)

addModule

public B addModule(Module module)

addModules

public B addModules(Module... modules)

addModules

public B addModules(Iterable<? extends Module> modules)

findModules

public static List<Module> findModules()

Method for locating available methods, using JDK ServiceLoader facility, along with module-provided SPI.

Note that method does not do any caching, so calls should be considered potentially expensive.

findModules

public static List<Module> findModules(ClassLoader classLoader)

Method for locating available methods, using JDK ServiceLoader facility, along with module-provided SPI.

Note that method does not do any caching, so calls should be considered potentially expensive.

findAndAddModules

public B findAndAddModules()

Convenience method that is functionally equivalent to: addModules(builder.findModules());

As with findModules(), no caching is done for modules, so care needs to be taken to either create and share a single mapper instance; or to cache introspected set of modules.

annotationIntrospector

public B annotationIntrospector(AnnotationIntrospector intr)

Method for replacing AnnotationIntrospector used by the mapper instance to be built. Note that doing this will replace the current introspector, which may lead to unavailability of core Jackson annotations. If you want to combine handling of multiple introspectors, have a look at AnnotationIntrospectorPair.

See Also:

AnnotationIntrospectorPair

nodeFactory

public B nodeFactory(JsonNodeFactory f)

typeFactory

public B typeFactory(TypeFactory f)

subtypeResolver

public B subtypeResolver(SubtypeResolver r)

visibility

public B visibility(VisibilityChecker<?> vc)

visibility

public B visibility(PropertyAccessor forMethod,
                    JsonAutoDetect.Visibility visibility)

handlerInstantiator

public B handlerInstantiator(HandlerInstantiator hi)

Method for configuring HandlerInstantiator to use for creating instances of handlers (such as serializers, deserializers, type and type id resolvers), given a class.

Parameters:

hi - Instantiator to use; if null, use the default implementation

propertyNamingStrategy

public B propertyNamingStrategy(PropertyNamingStrategy s)

serializerFactory

public B serializerFactory(SerializerFactory f)

filterProvider

public B filterProvider(FilterProvider prov)

Method for configuring this mapper to use specified FilterProvider for mapping Filter Ids to actual filter instances.

Note that usually it is better to use method in ObjectWriter, but sometimes this method is more convenient. For example, some frameworks only allow configuring of ObjectMapper instances and not ObjectWriters.

defaultPrettyPrinter

public B defaultPrettyPrinter(PrettyPrinter pp)

injectableValues

public B injectableValues(InjectableValues v)

addHandler

public B addHandler(DeserializationProblemHandler h)

Method used for adding a DeserializationProblemHandler for this builder, at the head of the list (meaning it has priority over handler registered earlier).

clearProblemHandlers

public B clearProblemHandlers()

Method that may be used to remove all DeserializationProblemHandlers added to this builder (if any).

defaultSetterInfo

public B defaultSetterInfo(JsonSetter.Value v)

defaultMergeable

public B defaultMergeable(Boolean b)

Method for setting default Setter configuration, regarding things like merging, null-handling; used for properties for which there are no per-type or per-property overrides (via annotations or config overrides).

defaultLeniency

public B defaultLeniency(Boolean b)

Method for setting default Setter configuration, regarding things like merging, null-handling; used for properties for which there are no per-type or per-property overrides (via annotations or config overrides).

defaultDateFormat

public B defaultDateFormat(DateFormat df)

Method for configuring the default DateFormat to use when serializing time values as Strings, and deserializing from JSON Strings. If you need per-request configuration, factory methods in ObjectReader and ObjectWriter instead.

defaultTimeZone

public B defaultTimeZone(TimeZone tz)

Method for overriding default TimeZone to use for formatting. Default value used is UTC (NOT default TimeZone of JVM).

defaultLocale

public B defaultLocale(Locale locale)

Method for overriding default locale to use for formatting. Default value used is Locale.getDefault().

defaultBase64Variant

public B defaultBase64Variant(Base64Variant v)

Method that will configure default Base64Variant that byte[] serializers and deserializers will use.

Parameters:

v - Base64 variant to use

Returns:

This mapper, for convenience to allow chaining

serializationInclusion

public B serializationInclusion(JsonInclude.Include incl)

addMixIn

public B addMixIn(Class<?> target,
                  Class<?> mixinSource)

Method to use for defining mix-in annotations to use for augmenting annotations that classes have, for purpose of configuration serialization and/or deserialization processing. Mixing in is done when introspecting class annotations and properties. Annotations from "mixin" class (and its supertypes) will override annotations that target classes (and their super-types) have.

Note that standard mixin handler implementations will only allow a single mix-in source class per target, so if there was a previous mix-in defined target it will be cleared. This also means that you can remove mix-in definition by specifying mixinSource of null

registerSubtypes

public B registerSubtypes(Class<?>... subtypes)

registerSubtypes

public B registerSubtypes(NamedType... subtypes)

registerSubtypes

public B registerSubtypes(Collection<Class<?>> subtypes)

polymorphicTypeValidator

public B polymorphicTypeValidator(PolymorphicTypeValidator ptv)

Method for assigning PolymorphicTypeValidator to use for validating subtypes when using Class name - based polymorphic deserialization using annotations (validator used with "Default Typing" is specified by passing in activateDefaultTyping(PolymorphicTypeValidator) instead).

Validator will be called on validating types for which no default databind deserializer, or module-provided deserializer is found: typically this includes "POJO" (aka Bean) types, but not (for example) most container types.

Since:

2.10

activateDefaultTyping

public B activateDefaultTyping(PolymorphicTypeValidator subtypeValidator)

Convenience method that is equivalent to calling

  activateDefaultTyping(subtypeValidator, DefaultTyping.OBJECT_AND_NON_CONCRETE);

NOTE: choice of PolymorphicTypeValidator to pass is critical for security as allowing all subtypes can be risky for untrusted content.

activateDefaultTyping

public B activateDefaultTyping(PolymorphicTypeValidator subtypeValidator,
                               ObjectMapper.DefaultTyping dti)

Convenience method that is equivalent to calling

  activateDefaultTyping(subtypeValidator, dti, JsonTypeInfo.As.WRAPPER_ARRAY);

NOTE: choice of PolymorphicTypeValidator to pass is critical for security as allowing all subtypes can be risky for untrusted content.

activateDefaultTyping

public B activateDefaultTyping(PolymorphicTypeValidator subtypeValidator,
                               ObjectMapper.DefaultTyping applicability,
                               JsonTypeInfo.As includeAs)

Method for enabling automatic inclusion of type information, needed for proper deserialization of polymorphic types (unless types have been annotated with JsonTypeInfo).

NOTE: use of JsonTypeInfo.As#EXTERNAL_PROPERTY NOT SUPPORTED; and attempts of do so will throw an IllegalArgumentException to make this limitation explicit.

NOTE: choice of PolymorphicTypeValidator to pass is critical for security as allowing all subtypes can be risky for untrusted content.

Parameters:

applicability - Defines kinds of types for which additional type information is added; see ObjectMapper.DefaultTyping for more information.

activateDefaultTypingAsProperty

public B activateDefaultTypingAsProperty(PolymorphicTypeValidator subtypeValidator,
                                         ObjectMapper.DefaultTyping applicability,
                                         String propertyName)

Method for enabling automatic inclusion of type information -- needed for proper deserialization of polymorphic types (unless types have been annotated with JsonTypeInfo) -- using "As.PROPERTY" inclusion mechanism and specified property name to use for inclusion (default being "@class" since default type information always uses class name as type identifier)

NOTE: choice of PolymorphicTypeValidator to pass is critical for security as allowing all subtypes can be risky for untrusted content.

deactivateDefaultTyping

public B deactivateDefaultTyping()

Method for disabling automatic inclusion of type information; if so, only explicitly annotated types (ones with JsonTypeInfo) will have additional embedded type information.

_this

protected final B _this()