T - Target type to convert to, from delegate typepublic class StdDelegatingDeserializer<T> extends StdDeserializer<T> implements ContextualDeserializer
Converter into desired target type.
Common delegate types to use are Map
and JsonNode.
Note that although types (delegate, target) may be related, they must not be same; trying to do this will result in an exception.
JsonDeserializer.None| Modifier and Type | Field and Description |
|---|---|
protected Converter<Object,T> |
_converter |
protected JsonDeserializer<Object> |
_delegateDeserializer
Underlying serializer for type
T<.code>. |
protected JavaType |
_delegateType
Fully resolved delegate type, with generic information if any available.
|
_valueClass| Modifier | Constructor and Description |
|---|---|
|
StdDelegatingDeserializer(Converter<?,T> converter) |
protected |
StdDelegatingDeserializer(Converter<Object,T> converter,
JavaType delegateType,
JsonDeserializer<?> delegateDeserializer) |
| Modifier and Type | Method and Description |
|---|---|
protected T |
convertValue(Object delegateValue)
Method called to convert from "delegate value" (which was deserialized
from JSON using standard Jackson deserializer for delegate type)
into desired target type.
|
JsonDeserializer<?> |
createContextual(DeserializationContext ctxt,
BeanProperty property)
Method called to see if a different (or differently configured) deserializer
is needed to deserialize values of specified property.
|
T |
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.
|
JsonDeserializer<?> |
getDelegatee()
Accessor that can be used to determine if this deserializer uses
another deserializer for actual deserialization, by delegating
calls.
|
protected StdDelegatingDeserializer<T> |
withDelegate(Converter<Object,T> converter,
JavaType delegateType,
JsonDeserializer<?> delegateDeserializer)
Method used for creating resolved contextual instances.
|
_parseBoolean, _parseBooleanFromNumber, _parseBooleanPrimitive, _parseByte, _parseDate, _parseDouble, _parseDoublePrimitive, _parseFloat, _parseFloatPrimitive, _parseInteger, _parseIntPrimitive, _parseLong, _parseLongPrimitive, _parseShort, _parseShortPrimitive, _parseString, findDeserializer, getValueClass, getValueType, handleUnknownProperty, isDefaultDeserializer, isDefaultKeyDeserializer, parseDoubledeserialize, getEmptyValue, getKnownPropertyNames, getNullValue, getObjectIdReader, isCachable, replaceDelegatee, unwrappingDeserializerprotected final JavaType _delegateType
protected final JsonDeserializer<Object> _delegateDeserializer
T<.code>.protected StdDelegatingDeserializer(Converter<Object,T> converter, JavaType delegateType, JsonDeserializer<?> delegateDeserializer)
protected StdDelegatingDeserializer<T> withDelegate(Converter<Object,T> converter, JavaType delegateType, JsonDeserializer<?> delegateDeserializer)
public JsonDeserializer<?> createContextual(DeserializationContext ctxt, BeanProperty property) throws JsonMappingException
ContextualDeserializercreateContextual 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 JsonDeserializer<?> getDelegatee()
JsonDeserializergetDelegatee in class JsonDeserializer<T>public T 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. 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<T>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<T>typeDeserializer - Deserializer to use for handling type informationIOExceptionJsonProcessingExceptionprotected T convertValue(Object delegateValue)
The default implementation uses configured Converter to do
conversion.
delegateValue - Copyright © 2012-2013 FasterXML. All Rights Reserved.