public static final class NumberDeserializers.NumberDeserializer extends StdScalarDeserializer<Number>
Number.class, we can just rely on type
mappings that plain JsonParser.getNumberValue() returns.
Since 1.5, there is one additional complication: some numeric
types (specifically, int/Integer and double/Double) are "non-typed";
meaning that they will NEVER be output with type information.
But other numeric types may need such type information.
This is why deserializeWithType(com.fasterxml.jackson.core.JsonParser, com.fasterxml.jackson.databind.DeserializationContext, com.fasterxml.jackson.databind.jsontype.TypeDeserializer) must be overridden.
JsonDeserializer.None| Modifier and Type | Field and Description |
|---|---|
static NumberDeserializers.NumberDeserializer |
instance |
_valueClass| Constructor and Description |
|---|
NumberDeserializers.NumberDeserializer() |
| Modifier and Type | Method and Description |
|---|---|
Number |
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)
As mentioned in class Javadoc, there is additional complexity in
handling potentially mixed type information here.
|
_hasTextualNull, _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, isCachable, replaceDelegatee, unwrappingDeserializerpublic static final NumberDeserializers.NumberDeserializer instance
public NumberDeserializers.NumberDeserializer()
public Number 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<Number>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
deserializeWithType in class StdScalarDeserializer<Number>typeDeserializer - Deserializer to use for handling type informationIOExceptionJsonProcessingExceptionCopyright © 2012-2013 FasterXML. All Rights Reserved.