Package org.codehaus.jackson.map.type

Class ArrayType

java.lang.Object

org.codehaus.jackson.type.JavaType

org.codehaus.jackson.map.type.TypeBase

org.codehaus.jackson.map.type.ArrayType

All Implemented Interfaces:

JsonSerializable, JsonSerializableWithType

public final class ArrayType
extends TypeBase

Array types represent Java arrays, both primitive and object valued. Further, Object-valued arrays can have element type of any other legal JavaType.

Field Summary

Fields

Modifier and Type	Field	Description
protected final JavaType	_componentType	Type of elements in the array.
protected final Object	_emptyArray	We will also keep track of shareable instance of empty array, since it usually needs to be constructed any way; and because it is essentially immutable and thus can be shared.

Fields inherited from class org.codehaus.jackson.type.JavaType

_class, _hashCode, _typeHandler, _valueHandler

Method Summary

Modifier and Type	Method	Description
protected JavaType	_narrow(Class<?> subclass)	Handling of narrowing conversions for arrays is trickier: for now, it is not even allowed.
protected String	buildCanonicalName()
static ArrayType	construct(JavaType componentType)	Deprecated. Since 1.9, if you must directly instantiate, call method that takes handlers
static ArrayType	construct(JavaType componentType, Object valueHandler, Object typeHandler)
JavaType	containedType(int index)	Method for accessing definitions of contained ("child") types.
int	containedTypeCount()	Method for checking how many contained types this type has.
String	containedTypeName(int index)	Not sure what symbolic name is used internally, if any; let's follow naming of Collection types here.
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)
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	hasGenericTypes()	Method that can be used to find out if the type directly declares generic parameters (for its direct super-class and/or super-interfaces).
boolean	isAbstract()	For some odd reason, modifiers for array classes would claim they are abstract types.
boolean	isArrayType()
boolean	isConcrete()	For some odd reason, modifiers for array classes would claim they are abstract types.
boolean	isContainerType()
JavaType	narrowContentsBy(Class<?> contentClass)	For array types, both main type and content type can be modified; but ultimately they are interchangeable.
String	toString()
JavaType	widenContentsBy(Class<?> contentClass)
ArrayType	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.
ArrayType	withContentValueHandler(Object h)
ArrayType	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.
ArrayType	withValueHandler(Object h)

Methods inherited from class org.codehaus.jackson.map.type.TypeBase

_classSignature, getTypeHandler, getValueHandler, serialize, serializeWithType, toCanonical

Methods inherited from class org.codehaus.jackson.type.JavaType

_assertSubclass, _widen, forcedNarrowBy, getErasedSignature, getGenericSignature, getKeyType, getRawClass, hashCode, hasRawClass, isCollectionLikeType, isEnumType, isFinal, isInterface, isMapLikeType, isPrimitive, isThrowable, narrowBy, setValueHandler, widenBy

Methods inherited from class java.lang.Object

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

Field Details

_componentType

protected final JavaType _componentType

Type of elements in the array.

_emptyArray

protected final Object _emptyArray

We will also keep track of shareable instance of empty array, since it usually needs to be constructed any way; and because it is essentially immutable and thus can be shared.

Method Details

construct

@Deprecated
public static ArrayType construct(JavaType componentType)

Deprecated.

Since 1.9, if you must directly instantiate, call method that takes handlers

construct

public static ArrayType construct(JavaType componentType,
 Object valueHandler,
 Object typeHandler)

withTypeHandler

public ArrayType 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 ArrayType 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 ArrayType withValueHandler(Object h)

Overrides:

withValueHandler in class JavaType

withContentValueHandler

public ArrayType withContentValueHandler(Object h)

Overrides:

withContentValueHandler in class JavaType

buildCanonicalName

protected String buildCanonicalName()

Specified by:

buildCanonicalName in class TypeBase

_narrow

protected JavaType _narrow(Class<?> subclass)

Handling of narrowing conversions for arrays is trickier: for now, it is not even allowed.

Specified by:

_narrow in class JavaType

narrowContentsBy

public JavaType narrowContentsBy(Class<?> contentClass)

For array types, both main type and content type can be modified; but ultimately they are interchangeable.

Specified by:

narrowContentsBy in class JavaType

widenContentsBy

public JavaType widenContentsBy(Class<?> contentClass)

Specified by:

widenContentsBy in class JavaType

isArrayType

public boolean isArrayType()

Overrides:

isArrayType in class JavaType

isAbstract

public boolean isAbstract()

For some odd reason, modifiers for array classes would claim they are abstract types. Not so, at least for our purposes.

Overrides:

isAbstract in class JavaType

isConcrete

public boolean isConcrete()

For some odd reason, modifiers for array classes would claim they are abstract types. Not so, at least for our purposes.

Overrides:

isConcrete in class JavaType

hasGenericTypes

public boolean hasGenericTypes()

Description copied from class: JavaType

Method that can be used to find out if the type directly declares generic parameters (for its direct super-class and/or super-interfaces).

Overrides:

hasGenericTypes in class JavaType

containedTypeName

public String containedTypeName(int index)

Not sure what symbolic name is used internally, if any; let's follow naming of Collection types here. Should not really matter since array types have no super types.

Overrides:

containedTypeName in class JavaType

Parameters:

index - Index of contained type to return

Returns:

Contained type at index, or null if no such type exists (no exception thrown)

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.

getContentType

public JavaType getContentType()

Description copied from class: JavaType

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

containedTypeCount

public int containedTypeCount()

Description copied from class: JavaType

Method for checking how many contained types this type has. Contained types are usually generic types, so that generic Maps have 2 contained types.

Overrides:

containedTypeCount in class JavaType

containedType

public JavaType containedType(int index)

Description copied from class: JavaType

Method for accessing definitions of contained ("child") types.

Overrides:

containedType in class JavaType

Parameters:

index - Index of contained type to return

Returns:

Contained type at index, or null if no such type exists (no exception thrown)

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

toString

public String toString()

Specified by:

toString in class JavaType

equals

public boolean equals(Object o)

Specified by:

equals in class JavaType