com.fasterxml.jackson.databind.deser.std
Class EnumDeserializer

java.lang.Object
  com.fasterxml.jackson.databind.JsonDeserializer<T>
      com.fasterxml.jackson.databind.deser.std.StdDeserializer<T>
          com.fasterxml.jackson.databind.deser.std.StdScalarDeserializer<Enum<?>>
              com.fasterxml.jackson.databind.deser.std.EnumDeserializer

public class EnumDeserializer
extends StdScalarDeserializer<Enum<?>>

Deserializer class that can deserialize instances of specified Enum class from Strings and Integers.

Nested Class Summary

protected static class

EnumDeserializer.FactoryBasedDeserializer Deserializer that uses a single-String static factory method for locating Enum values by String id.

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

JsonDeserializer.None

Field Summary

protected EnumResolver<?>

_resolver

Fields inherited from class com.fasterxml.jackson.databind.deser.std.StdDeserializer

_valueClass

Constructor Summary

EnumDeserializer(EnumResolver<?> res)

Method Summary

Enum<?>	deserialize(com.fasterxml.jackson.core.JsonParser jp, DeserializationContext ctxt) Method that can be called to ask implementation to deserialize JSON content into the value type this serializer handles.
static JsonDeserializer<?>	deserializerForCreator(DeserializationConfig config, Class<?> enumClass, AnnotatedMethod factory) Factory method used when Enum instances are to be deserialized using a creator (static factory method)
boolean	isCachable() Because of costs associated with constructing Enum resolvers, let's cache instances by default.

Methods inherited from class com.fasterxml.jackson.databind.deser.std.StdScalarDeserializer

deserializeWithType

Methods inherited from class com.fasterxml.jackson.databind.deser.std.StdDeserializer

_parseBoolean, _parseBooleanFromNumber, _parseBooleanPrimitive, _parseByte, _parseDate, _parseDouble, _parseDoublePrimitive, _parseFloat, _parseFloatPrimitive, _parseInteger, _parseIntPrimitive, _parseLong, _parseLongPrimitive, _parseShort, _parseShortPrimitive, findDeserializer, getValueClass, getValueType, handleUnknownProperty, isDefaultDeserializer, isDefaultKeyDeserializer, parseDouble

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

deserialize, getEmptyValue, getNullValue, unwrappingDeserializer

Methods inherited from class java.lang.Object

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

Field Detail

_resolver

protected final EnumResolver<?> _resolver

Constructor Detail

EnumDeserializer

public EnumDeserializer(EnumResolver<?> res)

Method Detail

deserializerForCreator

public static JsonDeserializer<?> deserializerForCreator(DeserializationConfig config,
                                                         Class<?> enumClass,
                                                         AnnotatedMethod factory)

Factory method used when Enum instances are to be deserialized using a creator (static factory method)

Returns:

Deserializer based on given factory method, if type was suitable; null if type can not be used

isCachable

public boolean isCachable()

Because of costs associated with constructing Enum resolvers, let's cache instances by default.

Overrides:

isCachable in class JsonDeserializer<Enum<?>>

deserialize

public Enum<?> deserialize(com.fasterxml.jackson.core.JsonParser jp,
                           DeserializationContext ctxt)
                    throws IOException,
                           com.fasterxml.jackson.core.JsonProcessingException

Description copied from class: JsonDeserializer

Method that can be called to ask implementation to deserialize JSON content into the value type this serializer handles. Returned instance is to be constructed by method itself.

Pre-condition for this method is that the parser points to the first event that is part of value to deserializer (and which is never JSON 'null' literal, more on this below): for simple types it may be the only value; and for structured types the Object start marker. Post-condition is that the parser will point to the last event that is part of deserialized value (or in case deserialization fails, event that was not recognized or usable, which may be the same event as the one it pointed to upon call).

Note that this method is never called for JSON null literal, and thus deserializers need (and should) not check for it.

Specified by:

deserialize in class JsonDeserializer<Enum<?>>

Parameters:

jp - Parsed used for reading JSON content

ctxt - Context that can be used to access information about this deserialization activity.

Returns:

Deserializer value

Throws:

IOException

com.fasterxml.jackson.core.JsonProcessingException