Package com.fasterxml.jackson.databind.util

Class EnumResolver

java.lang.Object

com.fasterxml.jackson.databind.util.EnumResolver

All Implemented Interfaces:

Serializable

public class EnumResolver
extends Object
implements Serializable

Helper class used to resolve String values (either JSON Object field names or regular String values) into Java Enum instances.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected final Enum<?>	_defaultValue
protected final Class<Enum<?>>	_enumClass
protected final Enum<?>[]	_enums
protected final HashMap<String,Enum<?>>	_enumsById
protected final boolean	_isFromIntValue	Marker for case where value may come from @JsonValue annotated accessor and is expected/likely to come from actual integral number value (and not String).
protected final boolean	_isIgnoreCase	Marker for case-insensitive handling

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	EnumResolver(Class<Enum<?>> enumClass, Enum<?>[] enums, HashMap<String,Enum<?>> map, Enum<?> defaultValue, boolean isIgnoreCase)	Deprecated. Since 2.13 -- remove from 2.16
protected	EnumResolver(Class<Enum<?>> enumClass, Enum<?>[] enums, HashMap<String,Enum<?>> map, Enum<?> defaultValue, boolean isIgnoreCase, boolean isFromIntValue)

Method Summary

Modifier and Type	Method	Description
protected static EnumResolver	_constructFor(DeserializationConfig config, Class<?> enumCls0)
protected static EnumResolver	_constructUsingMethod(DeserializationConfig config, Class<?> enumCls0, AnnotatedMember accessor)
protected static EnumResolver	_constructUsingToString(DeserializationConfig config, Class<?> enumCls0)
protected static Class<Enum<?>>	_enumClass(Class<?> enumCls0)
protected static Enum<?>[]	_enumConstants(Class<?> enumCls)
protected static Enum<?>	_enumDefault(AnnotationIntrospector intr, Class<?> enumCls)
protected Enum<?>	_findEnumCaseInsensitive(String key)
protected static boolean	_isIntType(Class<?> erasedType)
static EnumResolver	constructFor(DeserializationConfig config, Class<?> enumCls)	Factory method for constructing resolver that maps from Enum.name() into Enum value.
CompactStringObjectMap	constructLookup()
static EnumResolver	constructUsingEnumNamingStrategy(DeserializationConfig config, Class<?> enumCls, EnumNamingStrategy enumNamingStrategy)	Factory method for constructing resolver that maps the name of enums converted to external property names into Enum value using an implementation of EnumNamingStrategy.
static EnumResolver	constructUsingIndex(DeserializationConfig config, Class<Enum<?>> enumCls)	Factory method for constructing resolver that maps from index of Enum.values() into Enum value
static EnumResolver	constructUsingMethod(DeserializationConfig config, Class<?> enumCls, AnnotatedMember accessor)	Method used when actual String serialization is indicated using @JsonValue on a method in Enum class.
static EnumResolver	constructUsingToString(DeserializationConfig config, Class<?> enumCls)	Factory method for constructing resolver that maps from Enum.toString() into Enum value
Enum<?>	findEnum(String key)
Enum<?>	getDefaultValue()
Enum<?>	getEnum(int index)
Class<Enum<?>>	getEnumClass()
Collection<String>	getEnumIds()
List<Enum<?>>	getEnums()
Enum<?>[]	getRawEnums()
boolean	isFromIntValue()	Accessor for checking if we have a special case in which value to map is from @JsonValue annotated accessor with integral type: this matters for cases where incoming content value is of integral type and should be mapped to specific value and NOT to Enum.index().
int	lastValidIndex()

Methods inherited from class java.lang.Object

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

Field Details

_enumClass

protected final Class<Enum<?>> _enumClass

_enums

protected final Enum<?>[] _enums

_enumsById

protected final HashMap<String,Enum<?>> _enumsById

_defaultValue

protected final Enum<?> _defaultValue

_isIgnoreCase

protected final boolean _isIgnoreCase

Marker for case-insensitive handling

Since:

2.12

_isFromIntValue

protected final boolean _isFromIntValue

Marker for case where value may come from @JsonValue annotated accessor and is expected/likely to come from actual integral number value (and not String).

Special case is needed since this specifically means that Enum.index() should NOT be used or default to.

Since:

2.13

Constructor Details

EnumResolver

protected EnumResolver(Class<Enum<?>> enumClass,
 Enum<?>[] enums,
 HashMap<String,Enum<?>> map,
 Enum<?> defaultValue,
 boolean isIgnoreCase,
 boolean isFromIntValue)

Since:

2.12

EnumResolver

@Deprecated
protected EnumResolver(Class<Enum<?>> enumClass,
 Enum<?>[] enums,
 HashMap<String,Enum<?>> map,
 Enum<?> defaultValue,
 boolean isIgnoreCase)

Deprecated.

Since 2.13 -- remove from 2.16

Method Details

constructFor

public static EnumResolver constructFor(DeserializationConfig config,
 Class<?> enumCls)

Factory method for constructing resolver that maps from Enum.name() into Enum value.

Since:

2.12

_constructFor

protected static EnumResolver _constructFor(DeserializationConfig config,
 Class<?> enumCls0)

Since:

2.15

constructUsingToString

public static EnumResolver constructUsingToString(DeserializationConfig config,
 Class<?> enumCls)

Factory method for constructing resolver that maps from Enum.toString() into Enum value

Since:

2.12

constructUsingIndex

public static EnumResolver constructUsingIndex(DeserializationConfig config,
 Class<Enum<?>> enumCls)

Factory method for constructing resolver that maps from index of Enum.values() into Enum value

Since:

2.15

constructUsingEnumNamingStrategy

public static EnumResolver constructUsingEnumNamingStrategy(DeserializationConfig config,
 Class<?> enumCls,
 EnumNamingStrategy enumNamingStrategy)

Factory method for constructing resolver that maps the name of enums converted to external property names into Enum value using an implementation of EnumNamingStrategy. The output EnumResolver should contain values that are symmetric to EnumValues.constructUsingEnumNamingStrategy(MapperConfig, Class, EnumNamingStrategy).

Since:

2.15

_constructUsingToString

protected static EnumResolver _constructUsingToString(DeserializationConfig config,
 Class<?> enumCls0)

Since:

2.12

constructUsingMethod

public static EnumResolver constructUsingMethod(DeserializationConfig config,
 Class<?> enumCls,
 AnnotatedMember accessor)

Method used when actual String serialization is indicated using @JsonValue on a method in Enum class.

Since:

2.12

_constructUsingMethod

protected static EnumResolver _constructUsingMethod(DeserializationConfig config,
 Class<?> enumCls0,
 AnnotatedMember accessor)

Since:

2.12

constructLookup

public CompactStringObjectMap constructLookup()

_enumClass

protected static Class<Enum<?>> _enumClass(Class<?> enumCls0)

_enumConstants

protected static Enum<?>[] _enumConstants(Class<?> enumCls)

_enumDefault

protected static Enum<?> _enumDefault(AnnotationIntrospector intr,
 Class<?> enumCls)

_isIntType

protected static boolean _isIntType(Class<?> erasedType)

findEnum

public Enum<?> findEnum(String key)

_findEnumCaseInsensitive

protected Enum<?> _findEnumCaseInsensitive(String key)

getEnum

public Enum<?> getEnum(int index)

getDefaultValue

public Enum<?> getDefaultValue()

getRawEnums

public Enum<?>[] getRawEnums()

getEnums

public List<Enum<?>> getEnums()

getEnumIds

public Collection<String> getEnumIds()

Since:

2.7.3

getEnumClass

public Class<Enum<?>> getEnumClass()

lastValidIndex

public int lastValidIndex()

isFromIntValue

public boolean isFromIntValue()

Accessor for checking if we have a special case in which value to map is from @JsonValue annotated accessor with integral type: this matters for cases where incoming content value is of integral type and should be mapped to specific value and NOT to Enum.index().

Since:

2.13