StdKeyDeserializer (jackson-databind 2.15.0)

java.lang.Object
- com.fasterxml.jackson.databind.KeyDeserializer
- - com.fasterxml.jackson.databind.deser.std.StdKeyDeserializer

All Implemented Interfaces:

Serializable
```
public class StdKeyDeserializer
extends KeyDeserializer
implements Serializable
```
Default KeyDeserializer implementation used for most Map 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).

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class com.fasterxml.jackson.databind.KeyDeserializer
  KeyDeserializer.None

Field Summary

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

Constructor Summary

Constructors
Modifier	Constructor and Description
`protected`	`StdKeyDeserializer(int kind, Class<?> cls)`
`protected`	`StdKeyDeserializer(int kind, Class<?> cls, FromStringDeserializer<?> deser)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and 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 StdKeyDeserializer`	`forType(Class<?> raw)`
`Class<?>`	`getKeyClass()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail
- 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 FromStringDeserializer<?> _deser
```
  Some types that are deserialized using a helper deserializer.

Constructor Detail

StdKeyDeserializer

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

StdKeyDeserializer

protected StdKeyDeserializer(int kind,
                             Class<?> cls,
                             FromStringDeserializer<?> deser)

Method Detail

forType

public static StdKeyDeserializer forType(Class<?> raw)

deserializeKey
```
public Object deserializeKey(String key,
                             DeserializationContext ctxt)
                      throws IOException
```
Description copied from class: KeyDeserializer

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

Specified by:

deserializeKey in class KeyDeserializer

Throws:

IOException

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 IOException

Throws:: IOException

Class StdKeyDeserializer

Nested Class Summary

Nested classes/interfaces inherited from class com.fasterxml.jackson.databind.KeyDeserializer

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

TYPE_BOOLEAN

TYPE_BYTE

TYPE_SHORT

TYPE_CHAR

TYPE_INT

TYPE_LONG

TYPE_FLOAT

TYPE_DOUBLE

TYPE_LOCALE

TYPE_DATE

TYPE_CALENDAR

TYPE_UUID

TYPE_URI

TYPE_URL

TYPE_CLASS

TYPE_CURRENCY

TYPE_BYTE_ARRAY

_kind

_keyClass

_deser

Constructor Detail

StdKeyDeserializer

StdKeyDeserializer

Method Detail

forType

deserializeKey

getKeyClass

_parse

_parseInt

_parseLong

_parseDouble

_weirdKey