public class ObjectArrayDeserializer extends ContainerDeserializerBase<Object[]> implements ContextualDeserializer
JsonDeserializer.None
Modifier and Type | Field and Description |
---|---|
protected Class<?> |
_elementClass
Type of contained elements: needed for constructing actual
result array
|
protected JsonDeserializer<Object> |
_elementDeserializer
Element deserializer
|
protected TypeDeserializer |
_elementTypeDeserializer
If element instances have polymorphic type information, this
is the type deserializer that can handle it
|
protected boolean |
_untyped
Flag that indicates whether the component type is Object or not.
|
protected static Object[] |
NO_OBJECTS |
_containerType, _nullProvider, _skipNullValues, _unwrapSingle
_valueClass, F_MASK_ACCEPT_ARRAYS, F_MASK_INT_COERCIONS
Modifier | Constructor and Description |
---|---|
|
ObjectArrayDeserializer(JavaType arrayType,
JsonDeserializer<Object> elemDeser,
TypeDeserializer elemTypeDeser) |
protected |
ObjectArrayDeserializer(ObjectArrayDeserializer base,
JsonDeserializer<Object> elemDeser,
TypeDeserializer elemTypeDeser,
NullValueProvider nuller,
Boolean unwrapSingle) |
Modifier and Type | Method and Description |
---|---|
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.
|
Object[] |
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[] |
deserialize(JsonParser p,
DeserializationContext ctxt,
Object[] intoValue)
Alternate deserialization method (compared to the most commonly
used,
JsonDeserializer.deserialize(JsonParser, DeserializationContext) ),
which takes in initialized value instance, to be
configured and/or populated by deserializer. |
protected Byte[] |
deserializeFromBase64(JsonParser p,
DeserializationContext ctxt) |
Object[] |
deserializeWithType(JsonParser p,
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.
|
AccessPattern |
getEmptyAccessPattern()
This method may be called in conjunction with calls to
JsonDeserializer.getEmptyValue(DeserializationContext) , to check whether it needs
to be called just once (static values), or each time empty value is
needed. |
Object |
getEmptyValue(DeserializationContext ctxt)
Method called to determine value to be used for "empty" values
(most commonly when deserializing from empty JSON Strings).
|
protected Object[] |
handleNonArray(JsonParser p,
DeserializationContext ctxt) |
boolean |
isCachable()
Method called to see if deserializer instance is cachable and
usable for other properties of same type (type for which instance
was created).
|
ObjectArrayDeserializer |
withDeserializer(TypeDeserializer elemTypeDeser,
JsonDeserializer<?> elemDeser)
Overridable fluent-factory method used to create contextual instances
|
ObjectArrayDeserializer |
withResolved(TypeDeserializer elemTypeDeser,
JsonDeserializer<?> elemDeser,
NullValueProvider nuller,
Boolean unwrapSingle) |
findBackReference, getContentType, getValueInstantiator, getValueType, supportsUpdate, wrapAndThrow
_byteOverflow, _coercedTypeDesc, _coerceEmptyString, _coerceIntegral, _coerceNullToken, _coerceTextualNull, _deserializeFromArray, _deserializeFromEmpty, _deserializeWrappedValue, _failDoubleToIntCoercion, _findNullProvider, _hasTextualNull, _intOverflow, _isEmptyOrTextualNull, _isIntNumber, _isNaN, _isNegInf, _isPosInf, _neitherNull, _nonNullNumber, _parseBooleanFromInt, _parseBooleanPrimitive, _parseBytePrimitive, _parseDate, _parseDate, _parseDateFromArray, _parseDoublePrimitive, _parseDoublePrimitive, _parseFloatPrimitive, _parseFloatPrimitive, _parseIntPrimitive, _parseIntPrimitive, _parseLongPrimitive, _parseLongPrimitive, _parseShortPrimitive, _parseString, _reportFailedNullCoerce, _shortOverflow, _verifyEndArrayForSingle, _verifyNullForPrimitive, _verifyNullForPrimitiveCoercion, _verifyNullForScalarCoercion, _verifyNumberForScalarCoercion, _verifyStringForScalarCoercion, findContentNullProvider, findContentNullStyle, findConvertingContentDeserializer, findDeserializer, findFormatFeature, findFormatOverrides, findValueNullProvider, getValueClass, handledType, handleMissingEndArrayForSingle, handleUnknownProperty, isDefaultDeserializer, isDefaultKeyDeserializer, parseDouble
getDelegatee, getEmptyValue, getKnownPropertyNames, getNullAccessPattern, getNullValue, getNullValue, getObjectIdReader, replaceDelegatee, unwrappingDeserializer
protected static final Object[] NO_OBJECTS
protected final boolean _untyped
protected final Class<?> _elementClass
protected JsonDeserializer<Object> _elementDeserializer
protected final TypeDeserializer _elementTypeDeserializer
public ObjectArrayDeserializer(JavaType arrayType, JsonDeserializer<Object> elemDeser, TypeDeserializer elemTypeDeser)
protected ObjectArrayDeserializer(ObjectArrayDeserializer base, JsonDeserializer<Object> elemDeser, TypeDeserializer elemTypeDeser, NullValueProvider nuller, Boolean unwrapSingle)
public ObjectArrayDeserializer withDeserializer(TypeDeserializer elemTypeDeser, JsonDeserializer<?> elemDeser)
public ObjectArrayDeserializer withResolved(TypeDeserializer elemTypeDeser, JsonDeserializer<?> elemDeser, NullValueProvider nuller, Boolean unwrapSingle)
public boolean isCachable()
JsonDeserializer
Note that cached instances are still resolved on per-property basis,
if instance implements ResolvableDeserializer
:
cached instance is just as the base. This means that in most cases it is safe to
cache instances; however, it only makes sense to cache instances
if instantiation is expensive, or if instances are heavy-weight.
Default implementation returns false, to indicate that no caching is done.
isCachable
in class JsonDeserializer<Object[]>
public JsonDeserializer<?> createContextual(DeserializationContext ctxt, BeanProperty property) throws JsonMappingException
ContextualDeserializer
createContextual
in interface ContextualDeserializer
ctxt
- 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 cannot provide it and
null is passed instead (in which case impls usually pass 'this' deserializer as is)JsonMappingException
public JsonDeserializer<Object> getContentDeserializer()
ContainerDeserializerBase
getContentDeserializer
in class ContainerDeserializerBase<Object[]>
public AccessPattern getEmptyAccessPattern()
JsonDeserializer
JsonDeserializer.getEmptyValue(DeserializationContext)
, to check whether it needs
to be called just once (static values), or each time empty value is
needed.getEmptyAccessPattern
in class ContainerDeserializerBase<Object[]>
public Object getEmptyValue(DeserializationContext ctxt) throws JsonMappingException
JsonDeserializer
JsonDeserializer.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<Object[]>
JsonMappingException
public Object[] deserialize(JsonParser p, DeserializationContext ctxt) throws IOException
JsonDeserializer
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 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<Object[]>
p
- Parsed used for reading JSON contentctxt
- Context that can be used to access information about
this deserialization activity.IOException
public Object[] deserializeWithType(JsonParser p, DeserializationContext ctxt, TypeDeserializer typeDeserializer) throws IOException
StdDeserializer
deserializeWithType
in class StdDeserializer<Object[]>
typeDeserializer
- Deserializer to use for handling type informationIOException
public Object[] deserialize(JsonParser p, DeserializationContext ctxt, Object[] intoValue) throws IOException
JsonDeserializer
JsonDeserializer.deserialize(JsonParser, DeserializationContext)
),
which takes in initialized value instance, to be
configured and/or populated by deserializer.
Method is not necessarily used (or supported) by all types
(it will not work for immutable types, for obvious reasons):
most commonly it is used for Collections and Maps.
It may be used both with "updating readers" (for POJOs) and
when Collections and Maps use "getter as setter".
Default implementation just throws
UnsupportedOperationException
, to indicate that types
that do not explicitly add support do not necessarily support
update-existing-value operation (esp. immutable types)
deserialize
in class JsonDeserializer<Object[]>
IOException
protected Byte[] deserializeFromBase64(JsonParser p, DeserializationContext ctxt) throws IOException
IOException
protected Object[] handleNonArray(JsonParser p, DeserializationContext ctxt) throws IOException
IOException
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