com.fasterxml.jackson.databind.type

Class PlaceholderForType

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.PlaceholderForType

All Implemented Interfaces:

JsonSerializable, Serializable, Type

public class PlaceholderForType
extends TypeBase

Helper type used when introspecting bindings for already resolved types, needed for specialization.

Since:

2.8.11

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	_actualType Type assigned during wildcard resolution (which follows type structure resolution)
protected int	_ordinal

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

Constructor and Description
PlaceholderForType(int ordinal)

Method Summary

Methods

Modifier and Type	Method and Description
protected JavaType	_narrow(Class<?> subclass)
JavaType	actualType()
void	actualType(JavaType t)
protected String	buildCanonicalName()
boolean	equals(Object o)
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)
boolean	isContainerType()
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()
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.
JavaType	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.
JavaType	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	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.
JavaType	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.
JavaType	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, getContentType, getContentTypeHandler, getContentValueHandler, getErasedSignature, getGenericSignature, getKeyType, getParameterSource, getRawClass, getReferencedType, getTypeHandler, getValueHandler, hasContentType, hasGenericTypes, hasHandlers, hashCode, hasRawClass, hasValueHandler, isAbstract, isArrayType, isCollectionLikeType, isConcrete, isEnumType, isFinal, isInterface, isJavaLangObject, isMapLikeType, isPrimitive, isThrowable, isTypeOrSubTypeOf, useStaticType, withHandlersFrom

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

Field Detail

_ordinal

protected final int _ordinal

_actualType

protected JavaType _actualType

Type assigned during wildcard resolution (which follows type structure resolution)

Constructor Detail

PlaceholderForType

public PlaceholderForType(int ordinal)

Method Detail

actualType

public JavaType actualType()

actualType

public void actualType(JavaType t)

buildCanonicalName

protected String buildCanonicalName()

Overrides:

buildCanonicalName in class TypeBase

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

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

withTypeHandler

public JavaType 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 JavaType 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 JavaType 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 JavaType 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

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

withStaticTyping

public JavaType 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

_narrow

protected JavaType _narrow(Class<?> subclass)

Specified by:

_narrow in class JavaType

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.

toString

public String toString()

Specified by:

toString in class JavaType

equals

public boolean equals(Object o)

Specified by:

equals in class JavaType