public class EnumMapDeserializer extends StdDeserializer<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
JsonDeserializer.None| Modifier and Type | Field and Description |
|---|---|
protected Class<?> |
_enumClass |
protected JsonDeserializer<Enum<?>> |
_keyDeserializer |
protected JavaType |
_mapType |
protected JsonDeserializer<Object> |
_valueDeserializer |
protected TypeDeserializer |
_valueTypeDeserializer
If value instances have polymorphic type information, this
is the type deserializer that can handle it
|
_valueClass| Constructor and Description |
|---|
EnumMapDeserializer(JavaType mapType,
JsonDeserializer<?> keyDeserializer,
JsonDeserializer<?> valueDeser,
TypeDeserializer valueTypeDeser) |
| Modifier and Type | Method and Description |
|---|---|
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 jp,
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.
|
boolean |
isCachable()
Because of costs associated with constructing Enum resolvers,
let's cache instances by default.
|
EnumMapDeserializer |
withResolved(JsonDeserializer<?> keyDeserializer,
JsonDeserializer<?> valueDeserializer,
TypeDeserializer valueTypeDeser) |
_hasTextualNull, _isNaN, _isNegInf, _isPosInf, _parseBoolean, _parseBooleanFromNumber, _parseBooleanPrimitive, _parseByte, _parseDate, _parseDouble, _parseDoublePrimitive, _parseFloat, _parseFloatPrimitive, _parseInteger, _parseIntPrimitive, _parseLong, _parseLongPrimitive, _parseShort, _parseShortPrimitive, _parseString, findConvertingContentDeserializer, findDeserializer, getValueClass, getValueType, handledType, handleUnknownProperty, isDefaultDeserializer, isDefaultKeyDeserializer, parseDoubledeserialize, findBackReference, getDelegatee, getEmptyValue, getKnownPropertyNames, getNullValue, getObjectIdReader, replaceDelegatee, unwrappingDeserializerprotected final JavaType _mapType
protected final Class<?> _enumClass
protected JsonDeserializer<Enum<?>> _keyDeserializer
protected JsonDeserializer<Object> _valueDeserializer
protected final TypeDeserializer _valueTypeDeserializer
public EnumMapDeserializer(JavaType mapType, JsonDeserializer<?> keyDeserializer, JsonDeserializer<?> valueDeser, TypeDeserializer valueTypeDeser)
public EnumMapDeserializer withResolved(JsonDeserializer<?> keyDeserializer, JsonDeserializer<?> valueDeserializer, TypeDeserializer valueTypeDeser)
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 EnumMap<?,?> deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException
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 (jp.getCurrentToken() == JsonToken.START_OBJECT) {
jp.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<?,?>>jp - Parsed used for reading JSON contentctxt - Context that can be used to access information about
this deserialization activity.IOExceptionJsonProcessingExceptionpublic Object deserializeWithType(JsonParser jp, DeserializationContext ctxt, TypeDeserializer typeDeserializer) throws IOException, JsonProcessingException
StdDeserializerdeserializeWithType in class StdDeserializer<EnumMap<?,?>>typeDeserializer - Deserializer to use for handling type informationIOExceptionJsonProcessingExceptionCopyright © 2014 FasterXML. All Rights Reserved.