com.fasterxml.jackson.databind.type

Class CollectionLikeType

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.CollectionLikeType

All Implemented Interfaces:

JsonSerializable, Serializable, Type

Direct Known Subclasses:

CollectionType

public class CollectionLikeType
extends TypeBase

Type that represents things that act similar to Collection; but may or may not be instances of that interface. 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	_elementType Type of elements in collection

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

_asStatic, _class, _hash, _typeHandler, _valueHandler

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	CollectionLikeType(Class<?> collT, JavaType elemT, Object valueHandler, Object typeHandler, boolean asStatic)

Method Summary

Methods

Modifier and Type	Method and Description
protected JavaType	_narrow(Class<?> subclass)
protected String	buildCanonicalName()
static CollectionLikeType	construct(Class<?> rawType, JavaType elemT)
JavaType	containedType(int index)
int	containedTypeCount()
String	containedTypeName(int index) Not sure if we should count on this, but type names for core interfaces use "E" for element type
boolean	equals(Object o)
JavaType	getContentType()
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)
Class<?>	getParameterSource()
boolean	isCollectionLikeType()
boolean	isContainerType()
boolean	isTrueCollectionType() 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	narrowContentsBy(Class<?> contentClass)
String	toString()
JavaType	widenContentsBy(Class<?> contentClass)
CollectionLikeType	withContentTypeHandler(Object h) "Copy method" that will construct a new instance that is identical to this instance, except that its content type will have specified type handler assigned.
CollectionLikeType	withContentValueHandler(Object h) "Copy method" that will construct a new instance that is identical to this instance, except that it will have specified content value handler assigned.
CollectionLikeType	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.
CollectionLikeType	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.
CollectionLikeType	withValueHandler(Object h) "Copy 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

_classSignature, getTypeHandler, getValueHandler, serialize, serializeWithType, toCanonical

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

_assertSubclass, _widen, containedTypeOrUnknown, forcedNarrowBy, getErasedSignature, getGenericSignature, getKeyType, getRawClass, getReferencedType, hasGenericTypes, hashCode, hasRawClass, hasValueHandler, isAbstract, isArrayType, isConcrete, isEnumType, isFinal, isInterface, isJavaLangObject, isMapLikeType, isPrimitive, isThrowable, isTypeOrSubTypeOf, narrowBy, useStaticType, widenBy

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

_elementType

protected final JavaType _elementType

Type of elements in collection

Constructor Detail

CollectionLikeType

protected CollectionLikeType(Class<?> collT,
                  JavaType elemT,
                  Object valueHandler,
                  Object typeHandler,
                  boolean asStatic)

Method Detail

_narrow

protected JavaType _narrow(Class<?> subclass)

Specified by:

_narrow in class JavaType

narrowContentsBy

public JavaType narrowContentsBy(Class<?> contentClass)

Specified by:

narrowContentsBy in class JavaType

widenContentsBy

public JavaType widenContentsBy(Class<?> contentClass)

Specified by:

widenContentsBy in class JavaType

construct

public static CollectionLikeType construct(Class<?> rawType,
                           JavaType elemT)

withTypeHandler

public CollectionLikeType 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 CollectionLikeType withContentTypeHandler(Object h)

Description copied from class: JavaType

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

Specified by:

withContentTypeHandler in class JavaType

Returns:

Newly created type instance

withValueHandler

public CollectionLikeType withValueHandler(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 value handler assigned.

Specified by:

withValueHandler in class JavaType

Returns:

Newly created type instance

withContentValueHandler

public CollectionLikeType withContentValueHandler(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 content value handler assigned.

Specified by:

withContentValueHandler in class JavaType

Returns:

Newly created type instance

withStaticTyping

public CollectionLikeType 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

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.

isCollectionLikeType

public boolean isCollectionLikeType()

Overrides:

isCollectionLikeType in class JavaType

Returns:

True if type is either true Collection type, or something similar (meaning it has at least one type parameter, which describes type of contents)

getContentType

public JavaType getContentType()

Overrides:

getContentType in class JavaType

containedTypeCount

public int containedTypeCount()

Overrides:

containedTypeCount in class JavaType

containedType

public JavaType containedType(int index)

Overrides:

containedType in class JavaType

containedTypeName

public String containedTypeName(int index)

Not sure if we should count on this, but type names for core interfaces use "E" for element type

Overrides:

containedTypeName in class JavaType

getParameterSource

public Class<?> getParameterSource()

Specified by:

getParameterSource 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

buildCanonicalName

protected String buildCanonicalName()

Specified by:

buildCanonicalName in class TypeBase

isTrueCollectionType

public boolean isTrueCollectionType()

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.

equals

public boolean equals(Object o)

Specified by:

equals in class JavaType

toString

public String toString()

Specified by:

toString in class JavaType