Module tools.jackson.databind

Package tools.jackson.databind.deser.jackson

Class BaseNodeDeserializer<T extends JsonNode>

java.lang.Object

tools.jackson.databind.ValueDeserializer<T>

tools.jackson.databind.deser.std.StdDeserializer<T>

tools.jackson.databind.deser.jackson.BaseNodeDeserializer<T>

All Implemented Interfaces:

NullValueProvider, ValueInstantiator.Gettable

Direct Known Subclasses:

JsonNodeDeserializer

public abstract class BaseNodeDeserializer<T extends JsonNode>
extends StdDeserializer<T>

Base class for all actual JsonNode deserializer implementations. Uses iteration instead of recursion: this allows handling of very deeply nested input structures.

This class should only be extended by internal Jackson deserializers. It is not intended to be used by custom deserializers.

Nested Class Summary

Nested classes/interfaces inherited from class tools.jackson.databind.ValueDeserializer

ValueDeserializer.None

Field Summary

Fields

Modifier and Type	Field	Description
protected final boolean	_mergeArrays
protected final boolean	_mergeObjects
protected final Boolean	_supportsUpdates

Fields inherited from class tools.jackson.databind.deser.std.StdDeserializer

_valueClass, _valueType, F_MASK_INT_COERCIONS

Constructor Summary

Constructors

Modifier	Constructor	Description
	BaseNodeDeserializer(Class<T> vc, Boolean supportsUpdates)
protected	BaseNodeDeserializer(BaseNodeDeserializer<?> base, boolean mergeArrays, boolean mergeObjects)

Method Summary

Modifier and Type	Method	Description
protected abstract BaseNodeDeserializer<?>	_createWithMerge(boolean mergeArrays, boolean mergeObjects)
protected final JsonNode	_deserializeAnyScalar(JsonParser p, DeserializationContext ctxt)
protected final ContainerNode<?>	_deserializeContainerNoRecursion(JsonParser p, DeserializationContext ctxt, JsonNodeFactory nodeFactory, tools.jackson.databind.deser.jackson.BaseNodeDeserializer.ContainerStack stack, ContainerNode<?> root)
protected final ObjectNode	_deserializeObjectAtName(JsonParser p, DeserializationContext ctxt, JsonNodeFactory nodeFactory, tools.jackson.databind.deser.jackson.BaseNodeDeserializer.ContainerStack stack)	Alternate deserialization method used when parser already points to first PROPERTY_NAME and not START_OBJECT.
protected final JsonNode	_deserializeRareScalar(JsonParser p, DeserializationContext ctxt)
protected final JsonNode	_fromEmbedded(JsonParser p, DeserializationContext ctxt)
protected final JsonNode	_fromFloat(JsonParser p, DeserializationContext ctxt, JsonNodeFactory nodeFactory)
protected final JsonNode	_fromInt(JsonParser p, int coercionFeatures, JsonNodeFactory nodeFactory)
protected final JsonNode	_fromInt(JsonParser p, DeserializationContext ctxt, JsonNodeFactory nodeFactory)
protected void	_handleDuplicateProperty(JsonParser p, DeserializationContext ctxt, JsonNodeFactory nodeFactory, String propName, ObjectNode objectNode, JsonNode oldValue, JsonNode newValue)	Method called when there is a duplicate value for an Object property.
ValueDeserializer<?>	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	deserializeWithType(JsonParser p, DeserializationContext ctxt, TypeDeserializer typeDeserializer)	Base implementation that does not assume specific type inclusion mechanism.
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).
LogicalType	logicalType()	Method for accessing logical type of values this deserializer produces.
Boolean	supportsUpdate(DeserializationConfig config)	Introspection method that may be called to see whether deserializer supports update of an existing value (aka "merging") or not.
protected final JsonNode	updateObject(JsonParser p, DeserializationContext ctxt, ObjectNode node, tools.jackson.databind.deser.jackson.BaseNodeDeserializer.ContainerStack stack)	Alternate deserialization method that is to update existing ObjectNode if possible.

Methods inherited from class tools.jackson.databind.deser.std.StdDeserializer

_byteOverflow, _checkBooleanToStringCoercion, _checkCoercionFail, _checkDoubleSpecialValue, _checkFloatSpecialValue, _checkFloatToIntCoercion, _checkFloatToStringCoercion, _checkFromStringCoercion, _checkFromStringCoercion, _checkIntToFloatCoercion, _checkIntToStringCoercion, _checkTextualNull, _checkToStringCoercion, _coerceBooleanFromInt, _coercedTypeDesc, _coercedTypeDesc, _coerceIntegral, _deserializeFromArray, _deserializeFromEmptyString, _deserializeFromString, _deserializeFromStringForContainer, _deserializeWrappedValue, _findCoercionFromBlankString, _findCoercionFromEmptyArray, _findCoercionFromEmptyString, _findNullProvider, _hasTextualNull, _intOverflow, _isBlank, _isFalse, _isIntNumber, _isNaN, _isNegInf, _isPosInf, _isTrue, _neitherNull, _nonNullNumber, _parseBoolean, _parseBooleanPrimitive, _parseBytePrimitive, _parseDate, _parseDate, _parseDateFromArray, _parseDouble, _parseDoublePrimitive, _parseDoublePrimitive, _parseFloatPrimitive, _parseFloatPrimitive, _parseInteger, _parseInteger, _parseIntPrimitive, _parseIntPrimitive, _parseLong, _parseLong, _parseLongPrimitive, _parseLongPrimitive, _parseShortPrimitive, _parseString, _reportFailedNullCoerce, _shortOverflow, _streamReadConstraints, _validateTimestampLength, _verifyEndArrayForSingle, _verifyNullForPrimitive, _verifyNullForPrimitive, _verifyNullForPrimitiveCoercion, _wrapIOFailure, findContentNullProvider, findContentNullStyle, findConvertingContentDeserializer, findDeserializer, findFormatFeature, findFormatFeature, findFormatOverrides, findFormatOverrides, findValueNullProvider, getValueInstantiator, getValueType, getValueType, handledType, handleMissingEndArrayForSingle, handleNestedArrayForSingle, handleUnknownProperty, isDefaultDeserializer, isDefaultKeyDeserializer

Methods inherited from class tools.jackson.databind.ValueDeserializer

collectAllPropertyNamesTo, deserialize, deserialize, deserializeWithType, findBackReference, getAbsentValue, getDelegatee, getEmptyAccessPattern, getEmptyValue, getKnownPropertyNames, getNullAccessPattern, getNullValue, getObjectIdReader, hasAnySetter, replaceDelegatee, resolve, unwrappingDeserializer

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

_supportsUpdates

protected final Boolean _supportsUpdates

_mergeArrays

protected final boolean _mergeArrays

_mergeObjects

protected final boolean _mergeObjects

Constructor Details

BaseNodeDeserializer

public BaseNodeDeserializer(Class<T> vc,
 Boolean supportsUpdates)

BaseNodeDeserializer

protected BaseNodeDeserializer(BaseNodeDeserializer<?> base,
 boolean mergeArrays,
 boolean mergeObjects)

Method Details

deserializeWithType

public Object deserializeWithType(JsonParser p,
 DeserializationContext ctxt,
 TypeDeserializer typeDeserializer)
                           throws JacksonException

Description copied from class: StdDeserializer

Base implementation that does not assume specific type inclusion mechanism. Sub-classes are expected to override this method if they are to handle type information.

Overrides:

deserializeWithType in class StdDeserializer<T extends JsonNode>

typeDeserializer - Deserializer to use for handling type information

Throws:

JacksonException

logicalType

public LogicalType logicalType()

Description copied from class: ValueDeserializer

Method for accessing logical type of values this deserializer produces. Typically used for further configuring handling of values, for example, to find which coercions are legal.

Overrides:

logicalType in class ValueDeserializer<T extends JsonNode>

Returns:

Logical type of values this deserializer produces, if known; null if not

isCachable

public boolean isCachable()

Description copied from class: ValueDeserializer

Method called to see if deserializer instance is cachable and usable for other properties of same type (type for which instance was created).

Note that cached instances are still contextualized on per-property basis (but note that ValueDeserializer.resolve(DeserializationContext)d just once!) 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.

Overrides:

isCachable in class ValueDeserializer<T extends JsonNode>

supportsUpdate

public Boolean supportsUpdate(DeserializationConfig config)

Description copied from class: ValueDeserializer

Introspection method that may be called to see whether deserializer supports update of an existing value (aka "merging") or not. Return value should either be Boolean.FALSE if update is not supported at all (immutable values); Boolean.TRUE if update should usually work (regular POJOs, for example), or null if this is either not known, or may sometimes work.

Information gathered is typically used to either prevent merging update for property (either by skipping, if based on global defaults; or by exception during deserializer construction if explicit attempt made) if Boolean.FALSE returned, or inclusion if Boolean.TRUE is specified. If "unknown" case (null returned) behavior is to exclude property if global defaults used; or to allow if explicit per-type or property merging is defined.

Default implementation returns null to allow explicit per-type or per-property attempts.

Overrides:

supportsUpdate in class ValueDeserializer<T extends JsonNode>

createContextual

public ValueDeserializer<?> createContextual(DeserializationContext ctxt,
 BeanProperty property)

Description copied from class: ValueDeserializer

Method called to see if a different (or differently configured) deserializer is needed to deserialize values of specified property. Note that instance that this method is called on is typically shared one and as a result method should NOT modify this instance but rather construct and return a new instance. This instance should only be returned as-is, in case it is already suitable for use.

Overrides:

createContextual in class ValueDeserializer<T extends JsonNode>

Parameters:

ctxt - Deserialization context to access configuration, additional deserializers that may be needed by this deserializer

property - 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)

Returns:

Deserializer to use for deserializing values of specified property; may be this instance or a new instance.

_createWithMerge

protected abstract BaseNodeDeserializer<?> _createWithMerge(boolean mergeArrays,
 boolean mergeObjects)

_handleDuplicateProperty

protected void _handleDuplicateProperty(JsonParser p,
 DeserializationContext ctxt,
 JsonNodeFactory nodeFactory,
 String propName,
 ObjectNode objectNode,
 JsonNode oldValue,
 JsonNode newValue)
                                 throws JacksonException

Method called when there is a duplicate value for an Object property. By default we don't care, and the last value is used. Can be overridden to provide alternate handling, such as throwing an exception, or choosing different strategy for combining values or choosing which one to keep.

Parameters:

propName - Name of the property for which duplicate value was found

objectNode - Object node that contains values

oldValue - Value that existed for the object node before newValue was added

newValue - Newly added value just added to the object node

Throws:

JacksonException

_deserializeObjectAtName

protected final ObjectNode _deserializeObjectAtName(JsonParser p,
 DeserializationContext ctxt,
 JsonNodeFactory nodeFactory,
 tools.jackson.databind.deser.jackson.BaseNodeDeserializer.ContainerStack stack)
                                             throws JacksonException

Alternate deserialization method used when parser already points to first PROPERTY_NAME and not START_OBJECT.

Throws:

JacksonException

updateObject

protected final JsonNode updateObject(JsonParser p,
 DeserializationContext ctxt,
 ObjectNode node,
 tools.jackson.databind.deser.jackson.BaseNodeDeserializer.ContainerStack stack)
                               throws JacksonException

Alternate deserialization method that is to update existing ObjectNode if possible.

Throws:

JacksonException

_deserializeContainerNoRecursion

protected final ContainerNode<?> _deserializeContainerNoRecursion(JsonParser p,
 DeserializationContext ctxt,
 JsonNodeFactory nodeFactory,
 tools.jackson.databind.deser.jackson.BaseNodeDeserializer.ContainerStack stack,
 ContainerNode<?> root)
                                                           throws JacksonException

Throws:

JacksonException

_deserializeAnyScalar

protected final JsonNode _deserializeAnyScalar(JsonParser p,
 DeserializationContext ctxt)
                                        throws JacksonException

Throws:

JacksonException

_deserializeRareScalar

protected final JsonNode _deserializeRareScalar(JsonParser p,
 DeserializationContext ctxt)
                                         throws JacksonException

Throws:

JacksonException

_fromInt

protected final JsonNode _fromInt(JsonParser p,
 int coercionFeatures,
 JsonNodeFactory nodeFactory)
                           throws JacksonException

Throws:

JacksonException

_fromInt

protected final JsonNode _fromInt(JsonParser p,
 DeserializationContext ctxt,
 JsonNodeFactory nodeFactory)
                           throws JacksonException

Throws:

JacksonException

_fromFloat

protected final JsonNode _fromFloat(JsonParser p,
 DeserializationContext ctxt,
 JsonNodeFactory nodeFactory)
                             throws JacksonException

Throws:

JacksonException

_fromEmbedded

protected final JsonNode _fromEmbedded(JsonParser p,
 DeserializationContext ctxt)
                                throws JacksonException

Throws:

JacksonException