Class JDKKeyDeserializer

java.lang.Object

tools.jackson.databind.KeyDeserializer

tools.jackson.databind.deser.jdk.JDKKeyDeserializer

Direct Known Subclasses:

JDKKeyDeserializer.EnumKD, JDKKeyDeserializer.StringCtorKeyDeserializer, JDKKeyDeserializer.StringFactoryKeyDeserializer, JDKKeyDeserializer.StringKD

public class JDKKeyDeserializer
extends KeyDeserializer

Default KeyDeserializer implementation used for most Map key types Jackson supports. Implemented as "chameleon" (or swiss pocket knife) class; not particularly elegant, but helps reduce number of classes and jar size (class metadata adds significant per-class overhead; much more than bytecode).

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static final class	JDKKeyDeserializer.DelegatingKD	Key deserializer that wraps a "regular" deserializer (but one that must recognize FIELD_NAMEs as text!) to reuse existing handlers as key handlers.
(package private) static final class	JDKKeyDeserializer.EnumKD
(package private) static final class	JDKKeyDeserializer.StringCtorKeyDeserializer	Key deserializer that calls a single-string-arg constructor to instantiate desired key type.
(package private) static final class	JDKKeyDeserializer.StringFactoryKeyDeserializer	Key deserializer that calls a static no-args factory method to instantiate desired key type.
(package private) static final class	JDKKeyDeserializer.StringKD

Nested classes/interfaces inherited from class KeyDeserializer

KeyDeserializer.None

Field Summary

Fields

Modifier and Type	Field	Description
protected final JDKFromStringDeserializer	_deser	Some types that are deserialized using a helper deserializer.
protected final Class<?>	_keyClass
protected final int	_kind
static final int	TYPE_BOOLEAN
static final int	TYPE_BYTE
static final int	TYPE_BYTE_ARRAY
static final int	TYPE_CALENDAR
static final int	TYPE_CHAR
static final int	TYPE_CLASS
static final int	TYPE_CURRENCY
static final int	TYPE_DATE
static final int	TYPE_DOUBLE
static final int	TYPE_FLOAT
static final int	TYPE_INT
static final int	TYPE_LOCALE
static final int	TYPE_LONG
static final int	TYPE_SHORT
static final int	TYPE_URI
static final int	TYPE_URL
static final int	TYPE_UUID

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	JDKKeyDeserializer(int kind, Class<?> cls)
protected	JDKKeyDeserializer(int kind, Class<?> cls, JDKFromStringDeserializer deser)

Method Summary

Modifier and Type	Method	Description
protected Object	_parse(String key, DeserializationContext ctxt)
protected double	_parseDouble(String key)
protected int	_parseInt(String key)
protected long	_parseLong(String key)
protected Object	_weirdKey(DeserializationContext ctxt, String key, Exception e)
Object	deserializeKey(String key, DeserializationContext ctxt)	Method called to deserialize a Map key from JSON property name.
static JDKKeyDeserializer	forType(Class<?> raw)
Class<?>	getKeyClass()

Methods inherited from class KeyDeserializer

resolve

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

TYPE_BOOLEAN

public static final int TYPE_BOOLEAN

See Also:

• Constant Field Values

TYPE_BYTE

public static final int TYPE_BYTE

See Also:

• Constant Field Values

TYPE_SHORT

public static final int TYPE_SHORT

See Also:

• Constant Field Values

TYPE_CHAR

public static final int TYPE_CHAR

See Also:

• Constant Field Values

TYPE_INT

public static final int TYPE_INT

See Also:

• Constant Field Values

TYPE_LONG

public static final int TYPE_LONG

See Also:

• Constant Field Values

TYPE_FLOAT

public static final int TYPE_FLOAT

See Also:

• Constant Field Values

TYPE_DOUBLE

public static final int TYPE_DOUBLE

See Also:

• Constant Field Values

TYPE_LOCALE

public static final int TYPE_LOCALE

See Also:

• Constant Field Values

TYPE_DATE

public static final int TYPE_DATE

See Also:

• Constant Field Values

TYPE_CALENDAR

public static final int TYPE_CALENDAR

See Also:

• Constant Field Values

TYPE_UUID

public static final int TYPE_UUID

See Also:

• Constant Field Values

TYPE_URI

public static final int TYPE_URI

See Also:

• Constant Field Values

TYPE_URL

public static final int TYPE_URL

See Also:

• Constant Field Values

TYPE_CLASS

public static final int TYPE_CLASS

See Also:

• Constant Field Values

TYPE_CURRENCY

public static final int TYPE_CURRENCY

See Also:

• Constant Field Values

TYPE_BYTE_ARRAY

public static final int TYPE_BYTE_ARRAY

See Also:

• Constant Field Values

_kind

protected final int _kind

_keyClass

protected final Class<?> _keyClass

_deser

protected final JDKFromStringDeserializer _deser

Some types that are deserialized using a helper deserializer.

Constructor Details

JDKKeyDeserializer

protected JDKKeyDeserializer(int kind,
 Class<?> cls)

JDKKeyDeserializer

protected JDKKeyDeserializer(int kind,
 Class<?> cls,
 JDKFromStringDeserializer deser)

Method Details

forType

public static JDKKeyDeserializer forType(Class<?> raw)

deserializeKey

public Object deserializeKey(String key,
 DeserializationContext ctxt)
                      throws tools.jackson.core.JacksonException

Description copied from class: KeyDeserializer

Method called to deserialize a Map key from JSON property name.

Specified by:

deserializeKey in class KeyDeserializer

Throws:

tools.jackson.core.JacksonException

getKeyClass

public Class<?> getKeyClass()

_parse

protected Object _parse(String key,
 DeserializationContext ctxt)
                 throws Exception

Throws:

Exception

_parseInt

protected int _parseInt(String key)
                 throws IllegalArgumentException

Throws:

IllegalArgumentException

_parseLong

protected long _parseLong(String key)
                   throws IllegalArgumentException

Throws:

IllegalArgumentException

_parseDouble

protected double _parseDouble(String key)
                       throws IllegalArgumentException

Throws:

IllegalArgumentException

_weirdKey

protected Object _weirdKey(DeserializationContext ctxt,
 String key,
 Exception e)
                    throws tools.jackson.core.JacksonException

Throws:

tools.jackson.core.JacksonException