public class EnumMapDeserializer extends ContainerDeserializerBase<EnumMap<?,?>> implements ContextualDeserializer
EnumMap values.
Note: casting within this class is all messed up -- just could not figure out a way to properly deal with recursive definition of "EnumMap<K extends Enum<K>, V>
JsonDeserializer.None| Modifier and Type | Field and Description |
|---|---|
protected Class<?> |
_enumClass |
protected KeyDeserializer |
_keyDeserializer |
protected JsonDeserializer<Object> |
_valueDeserializer |
protected TypeDeserializer |
_valueTypeDeserializer
If value instances have polymorphic type information, this
is the type deserializer that can handle it
|
_containerType, _nullProvider, _skipNullValues, _unwrapSingle_valueClass, F_MASK_INT_COERCIONS| Constructor and Description |
|---|
EnumMapDeserializer(JavaType mapType,
KeyDeserializer keyDeser,
JsonDeserializer<?> valueDeser,
TypeDeserializer vtd)
Deprecated.
|
EnumMapDeserializer(JavaType mapType,
KeyDeserializer keyDeser,
JsonDeserializer<?> valueDeser,
TypeDeserializer vtd,
NullValueProvider nuller) |
| Modifier and Type | Method and Description |
|---|---|
protected EnumMap<?,?> |
constructMap() |
JsonDeserializer<?> |
createContextual(DeserializationContext ctxt,
BeanProperty property)
Method called to finalize setup of this deserializer,
when it is known for which property deserializer is needed for.
|
EnumMap<?,?> |
deserialize(JsonParser p,
DeserializationContext ctxt)
Method that can be called to ask implementation to deserialize
JSON content into the value type this serializer handles.
|
Object |
deserializeWithType(JsonParser jp,
DeserializationContext ctxt,
TypeDeserializer typeDeserializer)
Base implementation that does not assume specific type
inclusion mechanism.
|
JsonDeserializer<Object> |
getContentDeserializer()
Accesor for deserializer use for deserializing content values.
|
Object |
getEmptyValue(DeserializationContext ctxt)
Method called to determine value to be used for "empty" values
(most commonly when deserializing from empty JSON Strings).
|
boolean |
isCachable()
Because of costs associated with constructing Enum resolvers,
let's cache instances by default.
|
EnumMapDeserializer |
withResolved(KeyDeserializer keyDeserializer,
JsonDeserializer<?> valueDeserializer,
TypeDeserializer valueTypeDeser,
NullValueProvider nuller) |
findBackReference, getContentType, getEmptyAccessPattern, getValueInstantiator, getValueType, supportsUpdate, wrapAndThrow_byteOverflow, _coerceIntegral, _deserializeFromEmpty, _failDoubleToIntCoercion, _findNullProvider, _hasTextualNull, _intOverflow, _isIntNumber, _isNaN, _isNegInf, _isPosInf, _parseBooleanFromInt, _parseBooleanPrimitive, _parseDate, _parseDate, _parseDoublePrimitive, _parseFloatPrimitive, _parseIntPrimitive, _parseLongPrimitive, _parseShortPrimitive, _parseString, _shortOverflow, findContentNullProvider, findContentNullStyle, findConvertingContentDeserializer, findDeserializer, findFormatFeature, findFormatOverrides, findValueNullProvider, getValueClass, handledType, handleMissingEndArrayForSingle, handleUnknownProperty, isDefaultDeserializer, isDefaultKeyDeserializer, parseDoubledeserialize, getDelegatee, getEmptyValue, getKnownPropertyNames, getNullAccessPattern, getNullValue, getNullValue, getObjectIdReader, replaceDelegatee, unwrappingDeserializerprotected final Class<?> _enumClass
protected KeyDeserializer _keyDeserializer
protected JsonDeserializer<Object> _valueDeserializer
protected final TypeDeserializer _valueTypeDeserializer
public EnumMapDeserializer(JavaType mapType, KeyDeserializer keyDeser, JsonDeserializer<?> valueDeser, TypeDeserializer vtd, NullValueProvider nuller)
@Deprecated public EnumMapDeserializer(JavaType mapType, KeyDeserializer keyDeser, JsonDeserializer<?> valueDeser, TypeDeserializer vtd)
public EnumMapDeserializer withResolved(KeyDeserializer keyDeserializer, JsonDeserializer<?> valueDeserializer, TypeDeserializer valueTypeDeser, NullValueProvider nuller)
public JsonDeserializer<?> createContextual(DeserializationContext ctxt, BeanProperty property) throws JsonMappingException
createContextual in interface ContextualDeserializerctxt - Deserialization context to access configuration, additional
deserializers that may be needed by this deserializerproperty - Method, field or constructor parameter that represents the property
(and is used to assign deserialized value).
Should be available; but there may be cases where caller can not provide it and
null is passed instead (in which case impls usually pass 'this' deserializer as is)JsonMappingExceptionpublic boolean isCachable()
isCachable in class JsonDeserializer<EnumMap<?,?>>public JsonDeserializer<Object> getContentDeserializer()
ContainerDeserializerBasegetContentDeserializer in class ContainerDeserializerBase<EnumMap<?,?>>public Object getEmptyValue(DeserializationContext ctxt) throws JsonMappingException
JsonDeserializerJsonDeserializer.getNullValue(com.fasterxml.jackson.databind.DeserializationContext) (which in turn
is usually simply Java null), but it can be overridden
for types. Or, if type should never be converted from empty
String, method can also throw an exception.
Since version 2.6 (in which the context argument was added), call is expected to be made each and every time an empty value is needed.
Since version 2.9 does not require return of `T` any more.
Default implementation simply calls JsonDeserializer.getNullValue(com.fasterxml.jackson.databind.DeserializationContext) and
returns value.
getEmptyValue in class ContainerDeserializerBase<EnumMap<?,?>>JsonMappingExceptionpublic EnumMap<?,?> deserialize(JsonParser p, DeserializationContext ctxt) throws IOException
JsonDeserializerPre-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 or a FIELD_NAME.
The two possible input conditions for structured types result from polymorphism via fields. In the ordinary case, Jackson calls this method when it has encountered an OBJECT_START, and the method implementation must advance to the next token to see the first field name. If the application configures polymorphism via a field, then the object looks like the following.
{
"@class": "class name",
...
}
Jackson consumes the two tokens (the @class field name
and its value) in order to learn the class and select the deserializer.
Thus, the stream is pointing to the FIELD_NAME for the first field
after the @class. Thus, if you want your method to work correctly
both with and without polymorphism, you must begin your method with:
if (p.getCurrentToken() == JsonToken.START_OBJECT) {
p.nextToken();
}
This results in the stream pointing to the field name, so that
the two conditions align.
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.
deserialize in class JsonDeserializer<EnumMap<?,?>>p - Parsed used for reading JSON contentctxt - Context that can be used to access information about
this deserialization activity.IOExceptionpublic Object deserializeWithType(JsonParser jp, DeserializationContext ctxt, TypeDeserializer typeDeserializer) throws IOException
StdDeserializerdeserializeWithType in class StdDeserializer<EnumMap<?,?>>typeDeserializer - Deserializer to use for handling type informationIOExceptionprotected EnumMap<?,?> constructMap()
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