MapperConfig (jackson-databind 2.9.9.3 API)

java.lang.Object
- com.fasterxml.jackson.databind.cfg.MapperConfig<T>

All Implemented Interfaces:

ClassIntrospector.MixInResolver, Serializable

Direct Known Subclasses:

MapperConfigBase
```
public abstract class MapperConfig<T extends MapperConfig<T>>
extends Object
implements ClassIntrospector.MixInResolver, Serializable
```
Interface that defines functionality accessible through both serialization and deserialization configuration objects; accessors to mode-independent configuration settings and such. In addition, shared features are defined in MapperFeature.
Small part of implementation is included here by aggregating BaseSettings instance that contains configuration that is shared between different types of instances.

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`protected BaseSettings`	`_base` Immutable container object for simple configuration settings.
`protected int`	`_mapperFeatures` Set of shared mapper features enabled.
`protected static JsonFormat.Value`	`EMPTY_FORMAT`
`protected static JsonInclude.Value`	`EMPTY_INCLUDE`

Constructor Summary

Constructors
Modifier	Constructor and Description
`protected`	`MapperConfig(BaseSettings base, int mapperFeatures)`
`protected`	`MapperConfig(MapperConfig<T> src)`
`protected`	`MapperConfig(MapperConfig<T> src, BaseSettings base)`
`protected`	`MapperConfig(MapperConfig<T> src, int mapperFeatures)`

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`canOverrideAccessModifiers()` Accessor for determining whether it is ok to try to force override of access modifiers to be able to get or set values of non-public Methods, Fields; to invoke non-public Constructors, Methods; or to instantiate non-public Classes.
`static <F extends Enum<F> & ConfigFeature> int`	`collectFeatureDefaults(Class<F> enumClass)` Method that calculates bit set (flags) of all features that are enabled by default.
`SerializableString`	`compileString(String src)` Method for constructing a specialized textual object that can typically be serialized faster than basic `String` (depending on escaping needed if any, char-to-byte encoding if needed).
`JavaType`	`constructSpecializedType(JavaType baseType, Class<?> subclass)`
`JavaType`	`constructType(Class<?> cls)` Helper method that will construct `JavaType` for given raw class.
`JavaType`	`constructType(TypeReference<?> valueTypeRef)` Helper method that will construct `JavaType` for given type reference This is a simple short-cut for:
`abstract ConfigOverride`	`findConfigOverride(Class<?> type)` Accessor for finding `ConfigOverride` to use for properties of given type, if any exist; or return `null` if not.
`abstract PropertyName`	`findRootName(Class<?> rawRootType)`
`abstract PropertyName`	`findRootName(JavaType rootType)`
`abstract Class<?>`	`getActiveView()` Accessor for finding currently active view, if any (null if none)
`AnnotationIntrospector`	`getAnnotationIntrospector()` Method for getting `AnnotationIntrospector` configured to introspect annotation values used for configuration.
`abstract ContextAttributes`	`getAttributes()` Method for accessing per-instance shared (baseline/default) attribute values; these are used as the basis for per-call attributes.
`Base64Variant`	`getBase64Variant()` Method called during deserialization if Base64 encoded content needs to be decoded.
`ClassIntrospector`	`getClassIntrospector()`
`abstract ConfigOverride`	`getConfigOverride(Class<?> type)` Accessor for finding `ConfigOverride` to use for properties of given type, if any exist; or if none, return an immutable "empty" instance with no overrides.
`DateFormat`	`getDateFormat()` Method for accessing currently configured (textual) date format that will be used for reading or writing date values (in case of writing, only if textual output is configured; not if dates are to be serialized as time stamps).
`abstract JsonInclude.Value`	`getDefaultInclusion(Class<?> baseType, Class<?> propertyType)` Accessor for default property inclusion to use for serialization, considering possible per-type override for given base type and possible per-type override for given property type. NOTE: if no override found, defaults to value returned by `getDefaultPropertyInclusion()`.
`JsonInclude.Value`	`getDefaultInclusion(Class<?> baseType, Class<?> propertyType, JsonInclude.Value defaultIncl)` Accessor for default property inclusion to use for serialization, considering possible per-type override for given base type and possible per-type override for given property type; but if none found, returning given `defaultIncl`
`abstract Boolean`	`getDefaultMergeable()` Accessor for the baseline merge info used as the global baseline, not considering possible per-type overrides.
`abstract Boolean`	`getDefaultMergeable(Class<?> baseType)` Accessor for the baseline merge info used for given type, including global defaults if no type-specific overrides defined.
`abstract JsonFormat.Value`	`getDefaultPropertyFormat(Class<?> baseType)` Accessor for default format settings to use for serialization (and, to a degree deserialization), considering baseline settings and per-type defaults for given base type (if any).
`abstract JsonIgnoreProperties.Value`	`getDefaultPropertyIgnorals(Class<?> baseType)` Accessor for default property ignorals to use, if any, for given base type, based on config overrides settings (see `findConfigOverride(Class)`).
`abstract JsonIgnoreProperties.Value`	`getDefaultPropertyIgnorals(Class<?> baseType, AnnotatedClass actualClass)` Helper method that may be called to see if there are property ignoral definitions from annotations (via `AnnotatedClass`) or through "config overrides".
`abstract JsonInclude.Value`	`getDefaultPropertyInclusion()` Accessor for default property inclusion to use for serialization, used unless overridden by per-type or per-property overrides.
`abstract JsonInclude.Value`	`getDefaultPropertyInclusion(Class<?> baseType)` Accessor for default property inclusion to use for serialization, considering possible per-type override for given base type. NOTE: if no override found, defaults to value returned by `getDefaultPropertyInclusion()`.
`JsonInclude.Value`	`getDefaultPropertyInclusion(Class<?> baseType, JsonInclude.Value defaultIncl)` Accessor for default property inclusion to use for serialization, considering possible per-type override for given base type; but if none found, returning given `defaultIncl`
`abstract JsonSetter.Value`	`getDefaultSetterInfo()` Accessor for the baseline setter info used as the global baseline, not considering possible per-type overrides.
`TypeResolverBuilder<?>`	`getDefaultTyper(JavaType baseType)` Method called to locate a type info handler for types that do not have one explicitly declared via annotations (or other configuration).
`abstract VisibilityChecker<?>`	`getDefaultVisibilityChecker()` Accessor for object used for determining whether specific property elements (method, constructors, fields) can be auto-detected based on their visibility (access modifiers).
`abstract VisibilityChecker<?>`	`getDefaultVisibilityChecker(Class<?> baseType, AnnotatedClass actualClass)` Accessor for object used for determining whether specific property elements (method, constructors, fields) can be auto-detected based on their visibility (access modifiers).
`HandlerInstantiator`	`getHandlerInstantiator()`
`Locale`	`getLocale()` Method for accessing the default `Locale` to use for formatting, unless overridden by local annotations.
`PropertyNamingStrategy`	`getPropertyNamingStrategy()`
`abstract SubtypeResolver`	`getSubtypeResolver()`
`TimeZone`	`getTimeZone()` Method for accessing the default `TimeZone` to use for formatting, unless overridden by local annotations.
`TypeFactory`	`getTypeFactory()`
`boolean`	`hasMapperFeatures(int featureMask)` "Bulk" access method for checking that all features specified by mask are enabled.
`BeanDescription`	`introspectClassAnnotations(Class<?> cls)` Accessor for getting bean description that only contains class annotations: useful if no getter/setter/creator information is needed.
`BeanDescription`	`introspectClassAnnotations(JavaType type)` Accessor for getting bean description that only contains class annotations: useful if no getter/setter/creator information is needed.
`BeanDescription`	`introspectDirectClassAnnotations(Class<?> cls)` Accessor for getting bean description that only contains immediate class annotations: ones from the class, and its direct mix-in, if any, but not from super types.
`BeanDescription`	`introspectDirectClassAnnotations(JavaType type)` Accessor for getting bean description that only contains immediate class annotations: ones from the class, and its direct mix-in, if any, but not from super types.
`boolean`	`isAnnotationProcessingEnabled()` Method for determining whether annotation processing is enabled or not (default settings are typically that it is enabled; must explicitly disable).
`boolean`	`isEnabled(MapperFeature f)` Accessor for simple mapper features (which are shared for serialization, deserialization)
`boolean`	`shouldSortPropertiesAlphabetically()` Accessor for checking whether default settings for property handling indicate that properties should be alphabetically ordered or not.
`TypeIdResolver`	`typeIdResolverInstance(Annotated annotated, Class<? extends TypeIdResolver> resolverClass)` Method that can be called to obtain an instance of `TypeIdResolver` of specified type.
`TypeResolverBuilder<?>`	`typeResolverBuilderInstance(Annotated annotated, Class<? extends TypeResolverBuilder<?>> builderClass)` Method that can be called to obtain an instance of `TypeIdResolver` of specified type.
`abstract boolean`	`useRootWrapping()` Accessor for checking whether configuration indicates that "root wrapping" (use of an extra property/name pair at root level) is expected or not.
`abstract T`	`with(MapperFeature... features)` Method for constructing and returning a new instance with specified mapper features enabled.
`abstract T`	`with(MapperFeature feature, boolean state)`
`abstract T`	`without(MapperFeature... features)` Method for constructing and returning a new instance with specified mapper features disabled.

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

Methods inherited from interface com.fasterxml.jackson.databind.introspect.ClassIntrospector.MixInResolver
copy, findMixInClassFor

- Field Detail
  - EMPTY_INCLUDE
```
protected static final JsonInclude.Value EMPTY_INCLUDE
```
    Since:
    
    2.7
  - EMPTY_FORMAT
```
protected static final JsonFormat.Value EMPTY_FORMAT
```
    Since:
    
    2.7
  - _mapperFeatures
```
protected final int _mapperFeatures
```
    Set of shared mapper features enabled.
  - _base
```
protected final BaseSettings _base
```
    Immutable container object for simple configuration settings.
- Constructor Detail
  - MapperConfig
```
protected MapperConfig(BaseSettings base,
                       int mapperFeatures)
```
  - MapperConfig
```
protected MapperConfig(MapperConfig<T> src,
                       int mapperFeatures)
```
  - MapperConfig
```
protected MapperConfig(MapperConfig<T> src,
                       BaseSettings base)
```
  - MapperConfig
```
protected MapperConfig(MapperConfig<T> src)
```
- Method Detail
  - collectFeatureDefaults
```
public static <F extends Enum<F> & ConfigFeature> int collectFeatureDefaults(Class<F> enumClass)
```
    Method that calculates bit set (flags) of all features that are enabled by default.
  - with
```
public abstract T with(MapperFeature... features)
```
    Method for constructing and returning a new instance with specified mapper features enabled.
  - without
```
public abstract T without(MapperFeature... features)
```
    Method for constructing and returning a new instance with specified mapper features disabled.
  - with
```
public abstract T with(MapperFeature feature,
                       boolean state)
```
    Since:
    
    2.3
  - isEnabled
```
public final boolean isEnabled(MapperFeature f)
```
    Accessor for simple mapper features (which are shared for serialization, deserialization)
  - hasMapperFeatures
```
public final boolean hasMapperFeatures(int featureMask)
```
    "Bulk" access method for checking that all features specified by mask are enabled.
    
    Since:
    
    2.3
  - isAnnotationProcessingEnabled
```
public final boolean isAnnotationProcessingEnabled()
```
    Method for determining whether annotation processing is enabled or not (default settings are typically that it is enabled; must explicitly disable).
    
    Returns:
    
    True if annotation processing is enabled; false if not
  - canOverrideAccessModifiers
```
public final boolean canOverrideAccessModifiers()
```
    Accessor for determining whether it is ok to try to force override of access modifiers to be able to get or set values of non-public Methods, Fields; to invoke non-public Constructors, Methods; or to instantiate non-public Classes. By default this is enabled, but on some platforms it needs to be prevented since if this would violate security constraints and cause failures.
    
    Returns:
    
    True if access modifier overriding is allowed (and may be done for any Field, Method, Constructor or Class); false to prevent any attempts to override.
  - shouldSortPropertiesAlphabetically
```
public final boolean shouldSortPropertiesAlphabetically()
```
    Accessor for checking whether default settings for property handling indicate that properties should be alphabetically ordered or not.
  - useRootWrapping
```
public abstract boolean useRootWrapping()
```
    Accessor for checking whether configuration indicates that "root wrapping" (use of an extra property/name pair at root level) is expected or not.
  - compileString
```
public SerializableString compileString(String src)
```
    Method for constructing a specialized textual object that can typically be serialized faster than basic String (depending on escaping needed if any, char-to-byte encoding if needed).
    
    Parameters:
    
    src - Text to represent
    
    Returns:
    
    Optimized text object constructed
    
    Since:
    
    2.4
  - getClassIntrospector
```
public ClassIntrospector getClassIntrospector()
```
  - getAnnotationIntrospector
```
public AnnotationIntrospector getAnnotationIntrospector()
```
    Method for getting AnnotationIntrospector configured to introspect annotation values used for configuration.
    Non-final since it is actually overridden by sub-classes (for now?)
  - getPropertyNamingStrategy
```
public final PropertyNamingStrategy getPropertyNamingStrategy()
```
  - getHandlerInstantiator
```
public final HandlerInstantiator getHandlerInstantiator()
```
  - getDefaultTyper
```
public final TypeResolverBuilder<?> getDefaultTyper(JavaType baseType)
```
    Method called to locate a type info handler for types that do not have one explicitly declared via annotations (or other configuration). If such default handler is configured, it is returned; otherwise null is returned.
  - getSubtypeResolver
```
public abstract SubtypeResolver getSubtypeResolver()
```
  - getTypeFactory
```
public final TypeFactory getTypeFactory()
```
  - constructType
```
public final JavaType constructType(Class<?> cls)
```
    Helper method that will construct JavaType for given raw class. This is a simple short-cut for:
```
    getTypeFactory().constructType(cls);
```
  - constructType
```
public final JavaType constructType(TypeReference<?> valueTypeRef)
```
    Helper method that will construct JavaType for given type reference This is a simple short-cut for:
```
    getTypeFactory().constructType(valueTypeRef);
```
  - constructSpecializedType
```
public JavaType constructSpecializedType(JavaType baseType,
                                         Class<?> subclass)
```
  - introspectClassAnnotations
```
public BeanDescription introspectClassAnnotations(Class<?> cls)
```
    Accessor for getting bean description that only contains class annotations: useful if no getter/setter/creator information is needed.
  - introspectClassAnnotations
```
public BeanDescription introspectClassAnnotations(JavaType type)
```
    Accessor for getting bean description that only contains class annotations: useful if no getter/setter/creator information is needed.
  - introspectDirectClassAnnotations
```
public BeanDescription introspectDirectClassAnnotations(Class<?> cls)
```
    Accessor for getting bean description that only contains immediate class annotations: ones from the class, and its direct mix-in, if any, but not from super types.
  - introspectDirectClassAnnotations
```
public final BeanDescription introspectDirectClassAnnotations(JavaType type)
```
    Accessor for getting bean description that only contains immediate class annotations: ones from the class, and its direct mix-in, if any, but not from super types.
  - findConfigOverride
```
public abstract ConfigOverride findConfigOverride(Class<?> type)
```
    Accessor for finding ConfigOverride to use for properties of given type, if any exist; or return `null` if not.
    Note that only directly associated override is found; no type hierarchy traversal is performed.
    
    Returns:
    
    Override object to use for the type, if defined; null if none.
    
    Since:
    
    2.8
  - getConfigOverride
```
public abstract ConfigOverride getConfigOverride(Class<?> type)
```
    Accessor for finding ConfigOverride to use for properties of given type, if any exist; or if none, return an immutable "empty" instance with no overrides.
    Note that only directly associated override is found; no type hierarchy traversal is performed.
    
    Returns:
    
    Override object to use for the type, never null (but may be empty)
    
    Since:
    
    2.9
  - getDefaultPropertyInclusion
```
public abstract JsonInclude.Value getDefaultPropertyInclusion()
```
    Accessor for default property inclusion to use for serialization, used unless overridden by per-type or per-property overrides.
    
    Since:
    
    2.7
  - getDefaultPropertyInclusion
```
public abstract JsonInclude.Value getDefaultPropertyInclusion(Class<?> baseType)
```
    Accessor for default property inclusion to use for serialization, considering possible per-type override for given base type.
    NOTE: if no override found, defaults to value returned by getDefaultPropertyInclusion().
    
    Since:
    
    2.7
  - getDefaultPropertyInclusion
```
public JsonInclude.Value getDefaultPropertyInclusion(Class<?> baseType,
                                                     JsonInclude.Value defaultIncl)
```
    Accessor for default property inclusion to use for serialization, considering possible per-type override for given base type; but if none found, returning given defaultIncl
    
    Parameters:
    
    defaultIncl - Inclusion setting to return if no overrides found.
    
    Since:
    
    2.8.2
  - getDefaultInclusion
```
public abstract JsonInclude.Value getDefaultInclusion(Class<?> baseType,
                                                      Class<?> propertyType)
```
    Accessor for default property inclusion to use for serialization, considering possible per-type override for given base type and possible per-type override for given property type.
    NOTE: if no override found, defaults to value returned by getDefaultPropertyInclusion().
    
    Parameters:
    
    baseType - Type of the instance containing the targeted property.
    
    propertyType - Type of the property to look up inclusion setting for.
    
    Since:
    
    2.9
  - getDefaultInclusion
```
public JsonInclude.Value getDefaultInclusion(Class<?> baseType,
                                             Class<?> propertyType,
                                             JsonInclude.Value defaultIncl)
```
    Accessor for default property inclusion to use for serialization, considering possible per-type override for given base type and possible per-type override for given property type; but if none found, returning given defaultIncl
    
    Parameters:
    
    baseType - Type of the instance containing the targeted property.
    
    propertyType - Type of the property to look up inclusion setting for.
    
    defaultIncl - Inclusion setting to return if no overrides found.
    
    Since:
    
    2.9
  - getDefaultPropertyFormat
```
public abstract JsonFormat.Value getDefaultPropertyFormat(Class<?> baseType)
```
    Accessor for default format settings to use for serialization (and, to a degree deserialization), considering baseline settings and per-type defaults for given base type (if any).
    
    Since:
    
    2.7
  - getDefaultPropertyIgnorals
```
public abstract JsonIgnoreProperties.Value getDefaultPropertyIgnorals(Class<?> baseType)
```
    Accessor for default property ignorals to use, if any, for given base type, based on config overrides settings (see findConfigOverride(Class)).
    
    Since:
    
    2.8
  - getDefaultPropertyIgnorals
```
public abstract JsonIgnoreProperties.Value getDefaultPropertyIgnorals(Class<?> baseType,
                                                                      AnnotatedClass actualClass)
```
    Helper method that may be called to see if there are property ignoral definitions from annotations (via AnnotatedClass) or through "config overrides". If both exist, config overrides have precedence over class annotations.
    
    Since:
    
    2.8
  - getDefaultVisibilityChecker
```
public abstract VisibilityChecker<?> getDefaultVisibilityChecker()
```
    Accessor for object used for determining whether specific property elements (method, constructors, fields) can be auto-detected based on their visibility (access modifiers). Can be changed to allow different minimum visibility levels for auto-detection. Note that this is the global handler; individual types (classes) can further override active checker used (using JsonAutoDetect annotation)
  - getDefaultVisibilityChecker
```
public abstract VisibilityChecker<?> getDefaultVisibilityChecker(Class<?> baseType,
                                                                 AnnotatedClass actualClass)
```
    Accessor for object used for determining whether specific property elements (method, constructors, fields) can be auto-detected based on their visibility (access modifiers). This is based on global defaults (as would be returned by getDefaultVisibilityChecker(), but then modified by possible class annotation (see JsonAutoDetect) and/or per-type config override (see ConfigOverride.getVisibility()).
    
    Since:
    
    2.9
  - getDefaultSetterInfo
```
public abstract JsonSetter.Value getDefaultSetterInfo()
```
    Accessor for the baseline setter info used as the global baseline, not considering possible per-type overrides.
    
    Returns:
    
    Global base settings; never null
    
    Since:
    
    2.9
  - getDefaultMergeable
```
public abstract Boolean getDefaultMergeable()
```
    Accessor for the baseline merge info used as the global baseline, not considering possible per-type overrides.
    
    Returns:
    
    Global base settings, if any; `null` if none.
    
    Since:
    
    2.9
  - getDefaultMergeable
```
public abstract Boolean getDefaultMergeable(Class<?> baseType)
```
    Accessor for the baseline merge info used for given type, including global defaults if no type-specific overrides defined.
    
    Returns:
    
    Type-specific settings (if any); global defaults (same as getDefaultMergeable()) otherwise, if any defined; or `null` if neither defined
    
    Since:
    
    2.9
  - getDateFormat
```
public final DateFormat getDateFormat()
```
    Method for accessing currently configured (textual) date format that will be used for reading or writing date values (in case of writing, only if textual output is configured; not if dates are to be serialized as time stamps).
    Note that typically DateFormat instances are not thread-safe (at least ones provided by JDK): this means that calling code should clone format instance before using it.
    This method is usually only called by framework itself, since there are convenience methods available via DeserializationContext and SerializerProvider that take care of cloning and thread-safe reuse.
  - getLocale
```
public final Locale getLocale()
```
    Method for accessing the default Locale to use for formatting, unless overridden by local annotations. Initially set to Locale.getDefault().
  - getTimeZone
```
public final TimeZone getTimeZone()
```
    Method for accessing the default TimeZone to use for formatting, unless overridden by local annotations. Initially set to TimeZone.getDefault().
  - getActiveView
```
public abstract Class<?> getActiveView()
```
    Accessor for finding currently active view, if any (null if none)
  - getBase64Variant
```
public Base64Variant getBase64Variant()
```
    Method called during deserialization if Base64 encoded content needs to be decoded. Default version just returns default Jackson uses, which is modified-mime which does not add linefeeds (because those would have to be escaped in JSON strings); but this can be configured on ObjectWriter.
  - getAttributes
```
public abstract ContextAttributes getAttributes()
```
    Method for accessing per-instance shared (baseline/default) attribute values; these are used as the basis for per-call attributes.
    
    Since:
    
    2.3
  - findRootName
```
public abstract PropertyName findRootName(JavaType rootType)
```
    Since:
    
    2.6
  - findRootName
```
public abstract PropertyName findRootName(Class<?> rawRootType)
```
    Since:
    
    2.6
  - typeResolverBuilderInstance
```
public TypeResolverBuilder<?> typeResolverBuilderInstance(Annotated annotated,
                                                          Class<? extends TypeResolverBuilder<?>> builderClass)
```
    Method that can be called to obtain an instance of TypeIdResolver of specified type.
  - typeIdResolverInstance
```
public TypeIdResolver typeIdResolverInstance(Annotated annotated,
                                             Class<? extends TypeIdResolver> resolverClass)
```
    Method that can be called to obtain an instance of TypeIdResolver of specified type.

Class MapperConfig<T extends MapperConfig<T>>

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface com.fasterxml.jackson.databind.introspect.ClassIntrospector.MixInResolver

Field Detail

EMPTY_INCLUDE

EMPTY_FORMAT

_mapperFeatures

_base

Constructor Detail

MapperConfig

MapperConfig

MapperConfig

MapperConfig

Method Detail

collectFeatureDefaults

with

without

with

isEnabled

hasMapperFeatures

isAnnotationProcessingEnabled

canOverrideAccessModifiers

shouldSortPropertiesAlphabetically

useRootWrapping

compileString

getClassIntrospector

getAnnotationIntrospector

getPropertyNamingStrategy

getHandlerInstantiator

getDefaultTyper

getSubtypeResolver

getTypeFactory

constructType

constructType

constructSpecializedType

introspectClassAnnotations

introspectClassAnnotations

introspectDirectClassAnnotations

introspectDirectClassAnnotations

findConfigOverride

getConfigOverride

getDefaultPropertyInclusion

getDefaultPropertyInclusion

getDefaultPropertyInclusion

getDefaultInclusion

getDefaultInclusion

getDefaultPropertyFormat

getDefaultPropertyIgnorals

getDefaultPropertyIgnorals

getDefaultVisibilityChecker

getDefaultVisibilityChecker

getDefaultSetterInfo

getDefaultMergeable

getDefaultMergeable

getDateFormat

getLocale

getTimeZone

getActiveView

getBase64Variant

getAttributes

findRootName

findRootName

typeResolverBuilderInstance

typeIdResolverInstance