com.fasterxml.jackson.databind.type

Class MapLikeType

java.lang.Object

com.fasterxml.jackson.core.type.ResolvedType

com.fasterxml.jackson.databind.JavaType

com.fasterxml.jackson.databind.type.TypeBase

com.fasterxml.jackson.databind.type.MapLikeType

All Implemented Interfaces:

JsonSerializable, Serializable, Type

Direct Known Subclasses:

MapType

public class MapLikeType
extends TypeBase

Type that represents Map-like types; things that consist of key/value pairs but that do not necessarily implement Map, but that do not have enough introspection functionality to allow for some level of generic handling. This specifically allows framework to check for configuration and annotation settings used for Map types, and pass these to custom handlers that may be more familiar with actual type.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface com.fasterxml.jackson.databind.JsonSerializable

JsonSerializable.Base

Field Summary

Fields

Modifier and Type	Field and Description
protected JavaType	_keyType Type of keys of Map.
protected JavaType	_valueType Type of values of Map.

Fields inherited from class com.fasterxml.jackson.databind.type.TypeBase

_bindings, _superClass, _superInterfaces

Fields inherited from class com.fasterxml.jackson.databind.JavaType

_asStatic, _class, _hash, _typeHandler, _valueHandler

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MapLikeType(Class<?> mapType, TypeBindings bindings, JavaType superClass, JavaType[] superInts, JavaType keyT, JavaType valueT, Object valueHandler, Object typeHandler, boolean asStatic)
protected	MapLikeType(TypeBase base, JavaType keyT, JavaType valueT)

Method Summary

Modifier and Type	Method and Description
protected JavaType	_narrow(Class<?> subclass) Deprecated.
protected String	buildCanonicalName()
static MapLikeType	construct(Class<?> rawType, JavaType keyT, JavaType valueT) Deprecated.
boolean	equals(Object o)
JavaType	getContentType() Method for accessing content type of this type, if type has such a thing: simple types do not, structured types do (like arrays, Collections and Maps)
Object	getContentTypeHandler()
Object	getContentValueHandler()
StringBuilder	getErasedSignature(StringBuilder sb) Method for accessing signature without generic type information, in form compatible with all versions of JVM, and specifically used for type descriptions when generating byte code.
StringBuilder	getGenericSignature(StringBuilder sb)
JavaType	getKeyType() Method for accessing key type for this type, assuming type has such a concept (only Map types do)
boolean	hasHandlers() Helper method that checks whether this type, or its (optional) key or content type has JavaType.getValueHandler() or JavaType.getTypeHandler(); that is, are there any non-standard handlers associated with this type object.
boolean	isContainerType()
boolean	isMapLikeType()
boolean	isTrueMapType() Method that can be used for checking whether this type is a "real" Collection type; meaning whether it represents a parameterized subtype of Collection or just something that acts like one.
JavaType	refine(Class<?> rawType, TypeBindings bindings, JavaType superClass, JavaType[] superInterfaces) Mutant factory method that will try to create and return a sub-type instance for known parameterized types; for other types will return `null` to indicate that no just refinement makes necessary sense, without trying to detect special status through implemented interfaces.
String	toString()
static MapLikeType	upgradeFrom(JavaType baseType, JavaType keyT, JavaType valueT) Factory method that can be used to "upgrade" a basic type into collection-like one; usually done via TypeModifier
JavaType	withContentType(JavaType contentType) Mutant factory method that may be called on structured types that have a so-called content type (element of arrays, value type of Maps, referenced type of referential types), and will construct a new instance that is identical to this instance, except that it has specified content type, instead of current one.
MapLikeType	withContentTypeHandler(Object h) Mutant factory method that will construct a new instance that is identical to this instance, except that it will have specified content type (element type for arrays, value type for Maps and so forth) handler assigned.
MapLikeType	withContentValueHandler(Object h) Mutant factory method that will construct a new instance that is identical to this instance, except that it will have specified content value handler assigned.
JavaType	withHandlersFrom(JavaType src) Mutant factory method that will try to copy handlers that the specified source type instance had, if any; this must be done recursively where necessary (as content types may be structured).
MapLikeType	withKeyType(JavaType keyType)
MapLikeType	withKeyTypeHandler(Object h)
MapLikeType	withKeyValueHandler(Object h)
MapLikeType	withStaticTyping() Method that can be called to get a type instance that indicates that values of the type should be handled using "static typing" for purposes of serialization (as opposed to "dynamic" aka runtime typing): meaning that no runtime information is needed for determining serializers to use.
MapLikeType	withTypeHandler(Object h) "Copy method" that will construct a new instance that is identical to this instance, except that it will have specified type handler assigned.
MapLikeType	withValueHandler(Object h) Mutant factory method that will construct a new instance that is identical to this instance, except that it will have specified value handler assigned.

Methods inherited from class com.fasterxml.jackson.databind.type.TypeBase

_bogusSuperClass, _classSignature, containedType, containedTypeCount, containedTypeName, findSuperType, findTypeParameters, getBindings, getInterfaces, getSuperClass, serialize, serializeWithType, toCanonical

Methods inherited from class com.fasterxml.jackson.databind.JavaType

containedTypeOrUnknown, forcedNarrowBy, getErasedSignature, getGenericSignature, getParameterSource, getRawClass, getReferencedType, getTypeHandler, getValueHandler, hasContentType, hasGenericTypes, hashCode, hasRawClass, hasValueHandler, isAbstract, isArrayType, isCollectionLikeType, isConcrete, isEnumType, isFinal, isInterface, isJavaLangObject, isPrimitive, isThrowable, isTypeOrSubTypeOf, isTypeOrSuperTypeOf, useStaticType

Methods inherited from class com.fasterxml.jackson.core.type.ResolvedType

isReferenceType

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.reflect.Type

getTypeName

Field Detail

_keyType

protected final JavaType _keyType

Type of keys of Map.

_valueType

protected final JavaType _valueType

Type of values of Map.

Constructor Detail

MapLikeType

protected MapLikeType(Class<?> mapType,
                      TypeBindings bindings,
                      JavaType superClass,
                      JavaType[] superInts,
                      JavaType keyT,
                      JavaType valueT,
                      Object valueHandler,
                      Object typeHandler,
                      boolean asStatic)

MapLikeType

protected MapLikeType(TypeBase base,
                      JavaType keyT,
                      JavaType valueT)

Since:

2.7

Method Detail

upgradeFrom

public static MapLikeType upgradeFrom(JavaType baseType,
                                      JavaType keyT,
                                      JavaType valueT)

Factory method that can be used to "upgrade" a basic type into collection-like one; usually done via TypeModifier

Since:

2.7

construct

@Deprecated
public static MapLikeType construct(Class<?> rawType,
                                                JavaType keyT,
                                                JavaType valueT)

Deprecated.

_narrow

@Deprecated
protected JavaType _narrow(Class<?> subclass)

Deprecated.

Specified by:

_narrow in class JavaType

withKeyType

public MapLikeType withKeyType(JavaType keyType)

Since:

2.7

withContentType

public JavaType withContentType(JavaType contentType)

Description copied from class: JavaType

Mutant factory method that may be called on structured types that have a so-called content type (element of arrays, value type of Maps, referenced type of referential types), and will construct a new instance that is identical to this instance, except that it has specified content type, instead of current one. If content type is already set to given type, this is returned. If type does not have a content type (which is the case with SimpleType), IllegalArgumentException will be thrown.

Specified by:

withContentType in class JavaType

Returns:

Newly created type instance

withTypeHandler

public MapLikeType withTypeHandler(Object h)

Description copied from class: JavaType

"Copy method" that will construct a new instance that is identical to this instance, except that it will have specified type handler assigned.

Specified by:

withTypeHandler in class JavaType

Returns:

Newly created type instance

withContentTypeHandler

public MapLikeType withContentTypeHandler(Object h)

Description copied from class: JavaType

Mutant factory method that will construct a new instance that is identical to this instance, except that it will have specified content type (element type for arrays, value type for Maps and so forth) handler assigned.

Specified by:

withContentTypeHandler in class JavaType

Returns:

Newly created type instance, with given

withValueHandler

public MapLikeType withValueHandler(Object h)

Description copied from class: JavaType

Mutant factory method that will construct a new instance that is identical to this instance, except that it will have specified value handler assigned.

Specified by:

withValueHandler in class JavaType

Returns:

Newly created type instance

withContentValueHandler

public MapLikeType withContentValueHandler(Object h)

Description copied from class: JavaType

Mutant factory method that will construct a new instance that is identical to this instance, except that it will have specified content value handler assigned.

Specified by:

withContentValueHandler in class JavaType

Returns:

Newly created type instance

withHandlersFrom

public JavaType withHandlersFrom(JavaType src)

Description copied from class: JavaType

Mutant factory method that will try to copy handlers that the specified source type instance had, if any; this must be done recursively where necessary (as content types may be structured).

Overrides:

withHandlersFrom in class JavaType

withStaticTyping

public MapLikeType withStaticTyping()

Description copied from class: JavaType

Method that can be called to get a type instance that indicates that values of the type should be handled using "static typing" for purposes of serialization (as opposed to "dynamic" aka runtime typing): meaning that no runtime information is needed for determining serializers to use. The main use case is to allow forcing of specific root value serialization type, and specifically in resolving serializers for contained types (element types for arrays, Collections and Maps).

Specified by:

withStaticTyping in class JavaType

refine

public JavaType refine(Class<?> rawType,
                       TypeBindings bindings,
                       JavaType superClass,
                       JavaType[] superInterfaces)

Description copied from class: JavaType

Mutant factory method that will try to create and return a sub-type instance for known parameterized types; for other types will return `null` to indicate that no just refinement makes necessary sense, without trying to detect special status through implemented interfaces.

Specified by:

refine in class JavaType

buildCanonicalName

protected String buildCanonicalName()

Overrides:

buildCanonicalName in class TypeBase

isContainerType

public boolean isContainerType()

Specified by:

isContainerType in class JavaType

Returns:

True if type represented is a container type; this includes array, Map and Collection types.

isMapLikeType

public boolean isMapLikeType()

Overrides:

isMapLikeType in class JavaType

Returns:

True if type is either true Map type, or something similar (meaning it has at least two type parameter; first one describing key type, second value type)

getKeyType

public JavaType getKeyType()

Description copied from class: ResolvedType

Method for accessing key type for this type, assuming type has such a concept (only Map types do)

Overrides:

getKeyType in class JavaType

getContentType

public JavaType getContentType()

Description copied from class: ResolvedType

Method for accessing content type of this type, if type has such a thing: simple types do not, structured types do (like arrays, Collections and Maps)

Overrides:

getContentType in class JavaType

getContentValueHandler

public Object getContentValueHandler()

Overrides:

getContentValueHandler in class JavaType

getContentTypeHandler

public Object getContentTypeHandler()

Overrides:

getContentTypeHandler in class JavaType

hasHandlers

public boolean hasHandlers()

Description copied from class: JavaType

Helper method that checks whether this type, or its (optional) key or content type has JavaType.getValueHandler() or JavaType.getTypeHandler(); that is, are there any non-standard handlers associated with this type object.

Overrides:

hasHandlers in class JavaType

getErasedSignature

public StringBuilder getErasedSignature(StringBuilder sb)

Description copied from class: JavaType

Method for accessing signature without generic type information, in form compatible with all versions of JVM, and specifically used for type descriptions when generating byte code.

Specified by:

getErasedSignature in class TypeBase

Parameters:

sb - StringBuilder to append signature to

Returns:

StringBuilder that was passed in; returned to allow call chaining

getGenericSignature

public StringBuilder getGenericSignature(StringBuilder sb)

Specified by:

getGenericSignature in class TypeBase

Parameters:

sb - StringBuilder to append signature to

Returns:

StringBuilder that was passed in; returned to allow call chaining

withKeyTypeHandler

public MapLikeType withKeyTypeHandler(Object h)

withKeyValueHandler

public MapLikeType withKeyValueHandler(Object h)

isTrueMapType

public boolean isTrueMapType()

Method that can be used for checking whether this type is a "real" Collection type; meaning whether it represents a parameterized subtype of Collection or just something that acts like one.

toString

public String toString()

Specified by:

toString in class JavaType

equals

public boolean equals(Object o)

Specified by:

equals in class JavaType