BeanDeserializer (jackson-databind 2.15.4)

java.lang.Object
- com.fasterxml.jackson.databind.JsonDeserializer<T>
- - com.fasterxml.jackson.databind.deser.std.StdDeserializer<Object>
  - - com.fasterxml.jackson.databind.deser.BeanDeserializerBase
    - - com.fasterxml.jackson.databind.deser.BeanDeserializer

All Implemented Interfaces:

ContextualDeserializer, NullValueProvider, ResolvableDeserializer, ValueInstantiator.Gettable, Serializable

Direct Known Subclasses:

ThrowableDeserializer
```
public class BeanDeserializer
extends BeanDeserializerBase
implements Serializable
```
Deserializer class that can deserialize instances of arbitrary bean objects, usually from JSON Object structs,

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class com.fasterxml.jackson.databind.JsonDeserializer
  JsonDeserializer.None

Field Summary

Fields
Modifier and Type	Field and Description
`protected Exception`	`_nullFromCreator` Lazily constructed exception used as root cause if reporting problem with creator method that returns `null` (which is not allowed)

Fields inherited from class com.fasterxml.jackson.databind.deser.BeanDeserializerBase
_anySetter, _arrayDelegateDeserializer, _backRefs, _beanProperties, _beanType, _delegateDeserializer, _externalTypeIdHandler, _ignorableProps, _ignoreAllUnknown, _includableProps, _injectables, _needViewProcesing, _nonStandardCreation, _objectIdReader, _propertyBasedCreator, _serializationShape, _subDeserializers, _unwrappedPropertyHandler, _valueInstantiator, _vanillaProcessing, TEMP_PROPERTY_NAME

Fields inherited from class com.fasterxml.jackson.databind.deser.std.StdDeserializer
_valueClass, _valueType, F_MASK_ACCEPT_ARRAYS, F_MASK_INT_COERCIONS

Constructor Summary

Constructors
Modifier	Constructor and Description
`protected`	`BeanDeserializer(BeanDeserializerBase src)` Copy-constructor that can be used by sub-classes to allow copy-on-write style copying of settings of an existing instance.
	`BeanDeserializer(BeanDeserializerBase src, BeanPropertyMap props)`
`protected`	`BeanDeserializer(BeanDeserializerBase src, boolean ignoreAllUnknown)`
`protected`	`BeanDeserializer(BeanDeserializerBase src, NameTransformer unwrapper)`
	`BeanDeserializer(BeanDeserializerBase src, ObjectIdReader oir)`
	`BeanDeserializer(BeanDeserializerBase src, Set<String> ignorableProps)` Deprecated. in 2.12, remove from 3.0
	`BeanDeserializer(BeanDeserializerBase src, Set<String> ignorableProps, Set<String> includableProps)`
	`BeanDeserializer(BeanDeserializerBuilder builder, BeanDescription beanDesc, BeanPropertyMap properties, Map<String,SettableBeanProperty> backRefs, HashSet<String> ignorableProps, boolean ignoreAllUnknown, boolean hasViews)` Deprecated. in 2.12, remove from 3.0
	`BeanDeserializer(BeanDeserializerBuilder builder, BeanDescription beanDesc, BeanPropertyMap properties, Map<String,SettableBeanProperty> backRefs, HashSet<String> ignorableProps, boolean ignoreAllUnknown, Set<String> includableProps, boolean hasViews)` Constructor used by `BeanDeserializerBuilder`.

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`protected Exception`	`_creatorReturnedNullException()` Helper method for getting a lazily construct exception to be reported to `DeserializationContext.handleInstantiationProblem(Class, Object, Throwable)`.
`protected Object`	`_deserializeFromArray(JsonParser p, DeserializationContext ctxt)` Helper method that allows easy support for array-related coercion features: checks for either empty array, or single-value array-wrapped value (if coercion enabled by `CoercionConfigs` (since 2.12), and either reports an exception (if no coercion allowed), or returns appropriate result value using coercion mechanism indicated.
`protected Object`	`_deserializeOther(JsonParser p, DeserializationContext ctxt, JsonToken t)`
`protected Object`	`_deserializeUsingPropertyBased(JsonParser p, DeserializationContext ctxt)` Method called to deserialize bean using "property-based creator": this means that a non-default constructor or factory method is called, and then possibly other setters.
`protected Object`	`_deserializeWithErrorWrapping(JsonParser p, DeserializationContext ctxt, SettableBeanProperty prop)`
`protected Object`	`_deserializeWithExternalTypeId(JsonParser p, DeserializationContext ctxt, Object bean, ExternalTypeHandler ext)`
`protected Object`	`_missingToken(JsonParser p, DeserializationContext ctxt)` Deprecated.
`protected BeanDeserializerBase`	`asArrayDeserializer()` Fluent factory for creating a variant that can handle POJO output as a JSON Array.
`Object`	`deserialize(JsonParser p, DeserializationContext ctxt)` Main deserialization method for bean-based objects (POJOs).
`Object`	`deserialize(JsonParser p, DeserializationContext ctxt, Object bean)` Secondary deserialization method, called in cases where POJO instance is created as part of deserialization, potentially after collecting some or all of the properties to set.
`protected Object`	`deserializeFromNull(JsonParser p, DeserializationContext ctxt)` Helper method called for rare case of pointing to `JsonToken.VALUE_NULL` token.
`Object`	`deserializeFromObject(JsonParser p, DeserializationContext ctxt)` General version used when handling needs more advanced features.
`protected Object`	`deserializeUsingPropertyBasedWithExternalTypeId(JsonParser p, DeserializationContext ctxt)`
`protected Object`	`deserializeUsingPropertyBasedWithUnwrapped(JsonParser p, DeserializationContext ctxt)`
`protected Object`	`deserializeWithExternalTypeId(JsonParser p, DeserializationContext ctxt)`
`protected Object`	`deserializeWithExternalTypeId(JsonParser p, DeserializationContext ctxt, Object bean)`
`protected Object`	`deserializeWithUnwrapped(JsonParser p, DeserializationContext ctxt)` Method called when there are declared "unwrapped" properties which need special handling
`protected Object`	`deserializeWithUnwrapped(JsonParser p, DeserializationContext ctxt, Object bean)`
`protected Object`	`deserializeWithView(JsonParser p, DeserializationContext ctxt, Object bean, Class<?> activeView)`
`JsonDeserializer<Object>`	`unwrappingDeserializer(NameTransformer transformer)` Method that will return deserializer instance that is able to handle "unwrapped" value instances If no unwrapped instance can be constructed, will simply return this object as-is.
`BeanDeserializerBase`	`withBeanProperties(BeanPropertyMap props)` Mutant factory method that custom sub-classes must override; not left as abstract to prevent more drastic backwards compatibility problems.
`BeanDeserializer`	`withByNameInclusion(Set<String> ignorableProps, Set<String> includableProps)`
`BeanDeserializerBase`	`withIgnoreAllUnknown(boolean ignoreUnknown)`
`BeanDeserializer`	`withObjectIdReader(ObjectIdReader oir)`

Methods inherited from class com.fasterxml.jackson.databind.deser.BeanDeserializerBase
_convertObjectId, _delegateDeserializer, _findPropertyUnwrapper, _findSubclassDeserializer, _handleByNameInclusion, _handleTypedObjectId, _replaceProperty, _resolvedObjectIdProperty, _resolveInnerClassValuedProperty, _resolveManagedReferenceProperty, _resolveMergeAndNullSettings, createContextual, creatorProperties, deserializeFromArray, deserializeFromBoolean, deserializeFromDouble, deserializeFromEmbedded, deserializeFromNumber, deserializeFromObjectId, deserializeFromObjectUsingNonDefault, deserializeFromString, deserializeWithObjectId, deserializeWithType, findBackReference, findConvertingDeserializer, findProperty, findProperty, findProperty, getBeanClass, getEmptyAccessPattern, getEmptyValue, getKnownPropertyNames, getNullAccessPattern, getObjectIdReader, getPropertyCount, getValueInstantiator, getValueType, handledType, handleIgnoredProperty, handlePolymorphic, handlePolymorphic, handleUnknownProperties, handleUnknownProperty, handleUnknownVanilla, hasProperty, hasViews, injectValues, isCachable, isCaseInsensitive, logicalType, properties, replaceProperty, resolve, supportsUpdate, withIgnorableProperties, wrapAndThrow, wrapInstantiationProblem

Methods inherited from class com.fasterxml.jackson.databind.deser.std.StdDeserializer
_byteOverflow, _checkBooleanToStringCoercion, _checkCoercionFail, _checkDoubleSpecialValue, _checkFloatSpecialValue, _checkFloatToIntCoercion, _checkFloatToStringCoercion, _checkFromStringCoercion, _checkFromStringCoercion, _checkIntToFloatCoercion, _checkIntToStringCoercion, _checkTextualNull, _checkToStringCoercion, _coerceBooleanFromInt, _coercedTypeDesc, _coercedTypeDesc, _coerceEmptyString, _coerceIntegral, _coerceNullToken, _coerceTextualNull, _deserializeFromEmpty, _deserializeFromEmptyString, _deserializeFromString, _deserializeWrappedValue, _failDoubleToIntCoercion, _findCoercionFromBlankString, _findCoercionFromEmptyArray, _findCoercionFromEmptyString, _findNullProvider, _hasTextualNull, _intOverflow, _isBlank, _isEmptyOrTextualNull, _isFalse, _isIntNumber, _isNaN, _isNegInf, _isPosInf, _isTrue, _neitherNull, _nonNullNumber, _parseBoolean, _parseBooleanFromInt, _parseBooleanPrimitive, _parseBooleanPrimitive, _parseBytePrimitive, _parseDate, _parseDate, _parseDateFromArray, _parseDouble, _parseDouble, _parseDoublePrimitive, _parseDoublePrimitive, _parseDoublePrimitive, _parseFloatPrimitive, _parseFloatPrimitive, _parseFloatPrimitive, _parseInteger, _parseInteger, _parseIntPrimitive, _parseIntPrimitive, _parseLong, _parseLong, _parseLongPrimitive, _parseLongPrimitive, _parseShortPrimitive, _parseString, _parseString, _reportFailedNullCoerce, _shortOverflow, _verifyEndArrayForSingle, _verifyNullForPrimitive, _verifyNullForPrimitiveCoercion, _verifyNullForScalarCoercion, _verifyNumberForScalarCoercion, _verifyStringForScalarCoercion, findContentNullProvider, findContentNullStyle, findConvertingContentDeserializer, findDeserializer, findFormatFeature, findFormatOverrides, findValueNullProvider, getValueClass, getValueType, handleMissingEndArrayForSingle, handleNestedArrayForSingle, isDefaultDeserializer, isDefaultKeyDeserializer

Methods inherited from class com.fasterxml.jackson.databind.JsonDeserializer
deserializeWithType, getAbsentValue, getDelegatee, getEmptyValue, getNullValue, getNullValue, replaceDelegatee

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail
- _nullFromCreator
```
protected transient Exception _nullFromCreator
```
  Lazily constructed exception used as root cause if reporting problem with creator method that returns null (which is not allowed)
  
  Since:
  
  2.8

Constructor Detail

BeanDeserializer

@Deprecated
public BeanDeserializer(BeanDeserializerBuilder builder,
                                    BeanDescription beanDesc,
                                    BeanPropertyMap properties,
                                    Map<String,SettableBeanProperty> backRefs,
                                    HashSet<String> ignorableProps,
                                    boolean ignoreAllUnknown,
                                    boolean hasViews)

Deprecated. in 2.12, remove from 3.0

Constructor used by BeanDeserializerBuilder.

BeanDeserializer

public BeanDeserializer(BeanDeserializerBuilder builder,
                        BeanDescription beanDesc,
                        BeanPropertyMap properties,
                        Map<String,SettableBeanProperty> backRefs,
                        HashSet<String> ignorableProps,
                        boolean ignoreAllUnknown,
                        Set<String> includableProps,
                        boolean hasViews)

Constructor used by BeanDeserializerBuilder.

Since:: 2.12

BeanDeserializer
```
protected BeanDeserializer(BeanDeserializerBase src)
```
Copy-constructor that can be used by sub-classes to allow copy-on-write style copying of settings of an existing instance.

BeanDeserializer

protected BeanDeserializer(BeanDeserializerBase src,
                           boolean ignoreAllUnknown)

BeanDeserializer

protected BeanDeserializer(BeanDeserializerBase src,
                           NameTransformer unwrapper)

BeanDeserializer

public BeanDeserializer(BeanDeserializerBase src,
                        ObjectIdReader oir)

BeanDeserializer

@Deprecated
public BeanDeserializer(BeanDeserializerBase src,
                                    Set<String> ignorableProps)

Deprecated. in 2.12, remove from 3.0

BeanDeserializer

public BeanDeserializer(BeanDeserializerBase src,
                        Set<String> ignorableProps,
                        Set<String> includableProps)

Since:: 2.12

BeanDeserializer

public BeanDeserializer(BeanDeserializerBase src,
                        BeanPropertyMap props)

Method Detail

unwrappingDeserializer
```
public JsonDeserializer<Object> unwrappingDeserializer(NameTransformer transformer)
```
Description copied from class: JsonDeserializer

Method that will return deserializer instance that is able to handle "unwrapped" value instances If no unwrapped instance can be constructed, will simply return this object as-is.
Default implementation just returns 'this' indicating that no unwrapped variant exists

Specified by:

unwrappingDeserializer in class BeanDeserializerBase

withObjectIdReader
```
public BeanDeserializer withObjectIdReader(ObjectIdReader oir)
```
Specified by:

withObjectIdReader in class BeanDeserializerBase

withByNameInclusion

public BeanDeserializer withByNameInclusion(Set<String> ignorableProps,
                                            Set<String> includableProps)

Specified by:: withByNameInclusion in class BeanDeserializerBase

withIgnoreAllUnknown
```
public BeanDeserializerBase withIgnoreAllUnknown(boolean ignoreUnknown)
```
Specified by:

withIgnoreAllUnknown in class BeanDeserializerBase

withBeanProperties
```
public BeanDeserializerBase withBeanProperties(BeanPropertyMap props)
```
Description copied from class: BeanDeserializerBase

Mutant factory method that custom sub-classes must override; not left as abstract to prevent more drastic backwards compatibility problems.

Overrides:

withBeanProperties in class BeanDeserializerBase

asArrayDeserializer
```
protected BeanDeserializerBase asArrayDeserializer()
```
Description copied from class: BeanDeserializerBase

Fluent factory for creating a variant that can handle POJO output as a JSON Array. Implementations may ignore this request if no such input is possible.

Specified by:

asArrayDeserializer in class BeanDeserializerBase

deserialize
```
public Object deserialize(JsonParser p,
                          DeserializationContext ctxt)
                   throws IOException
```
Main deserialization method for bean-based objects (POJOs).

Specified by:

deserialize in class JsonDeserializer<Object>

Parameters:

p - Parsed used for reading JSON content

ctxt - Context that can be used to access information about this deserialization activity.

Returns:

Deserialized value

Throws:

IOException

_deserializeOther

protected final Object _deserializeOther(JsonParser p,
                                         DeserializationContext ctxt,
                                         JsonToken t)
                                  throws IOException

Throws:: IOException

_missingToken

@Deprecated
protected Object _missingToken(JsonParser p,
                                           DeserializationContext ctxt)
                                    throws IOException

Deprecated.

Throws:: IOException

deserialize
```
public Object deserialize(JsonParser p,
                          DeserializationContext ctxt,
                          Object bean)
                   throws IOException
```
Secondary deserialization method, called in cases where POJO instance is created as part of deserialization, potentially after collecting some or all of the properties to set.

Overrides:

deserialize in class JsonDeserializer<Object>

Throws:

IOException

deserializeFromObject

public Object deserializeFromObject(JsonParser p,
                                    DeserializationContext ctxt)
                             throws IOException

General version used when handling needs more advanced features.

Specified by:: deserializeFromObject in class BeanDeserializerBase
Throws:: IOException

_deserializeUsingPropertyBased
```
protected Object _deserializeUsingPropertyBased(JsonParser p,
                                                DeserializationContext ctxt)
                                         throws IOException
```
Method called to deserialize bean using "property-based creator": this means that a non-default constructor or factory method is called, and then possibly other setters. The trick is that values for creator method need to be buffered, first; and due to non-guaranteed ordering possibly some other properties as well.

Specified by:

_deserializeUsingPropertyBased in class BeanDeserializerBase

Throws:

IOException

_deserializeWithErrorWrapping

protected final Object _deserializeWithErrorWrapping(JsonParser p,
                                                     DeserializationContext ctxt,
                                                     SettableBeanProperty prop)
                                              throws IOException

Throws:: IOException

deserializeFromNull
```
protected Object deserializeFromNull(JsonParser p,
                                     DeserializationContext ctxt)
                              throws IOException
```
Helper method called for rare case of pointing to JsonToken.VALUE_NULL token. While this is most often an erroneous condition, there is one specific case with XML handling where polymorphic type with no properties is exposed as such, and should be handled same as empty Object.

Throws:

IOException

Since:

2.7

_deserializeFromArray
```
protected Object _deserializeFromArray(JsonParser p,
                                       DeserializationContext ctxt)
                                throws IOException
```
Description copied from class: StdDeserializer

Helper method that allows easy support for array-related coercion features: checks for either empty array, or single-value array-wrapped value (if coercion enabled by CoercionConfigs (since 2.12), and either reports an exception (if no coercion allowed), or returns appropriate result value using coercion mechanism indicated.
This method should NOT be called if Array representation is explicitly supported for type: it should only be called in case it is otherwise unrecognized.
NOTE: in case of unwrapped single element, will handle actual decoding by calling StdDeserializer._deserializeWrappedValue(com.fasterxml.jackson.core.JsonParser, com.fasterxml.jackson.databind.DeserializationContext), which by default calls JsonDeserializer.deserialize(JsonParser, DeserializationContext).

Overrides:

_deserializeFromArray in class StdDeserializer<Object>

Throws:

IOException

deserializeWithView

protected final Object deserializeWithView(JsonParser p,
                                           DeserializationContext ctxt,
                                           Object bean,
                                           Class<?> activeView)
                                    throws IOException

Throws:: IOException

deserializeWithUnwrapped

protected Object deserializeWithUnwrapped(JsonParser p,
                                          DeserializationContext ctxt)
                                   throws IOException

Method called when there are declared "unwrapped" properties which need special handling

Throws:: IOException

deserializeWithUnwrapped

protected Object deserializeWithUnwrapped(JsonParser p,
                                          DeserializationContext ctxt,
                                          Object bean)
                                   throws IOException

Throws:: IOException

deserializeUsingPropertyBasedWithUnwrapped

protected Object deserializeUsingPropertyBasedWithUnwrapped(JsonParser p,
                                                            DeserializationContext ctxt)
                                                     throws IOException

Throws:: IOException

deserializeWithExternalTypeId

protected Object deserializeWithExternalTypeId(JsonParser p,
                                               DeserializationContext ctxt)
                                        throws IOException

Throws:: IOException

deserializeWithExternalTypeId

protected Object deserializeWithExternalTypeId(JsonParser p,
                                               DeserializationContext ctxt,
                                               Object bean)
                                        throws IOException

Throws:: IOException

_deserializeWithExternalTypeId

protected Object _deserializeWithExternalTypeId(JsonParser p,
                                                DeserializationContext ctxt,
                                                Object bean,
                                                ExternalTypeHandler ext)
                                         throws IOException

Throws:: IOException

deserializeUsingPropertyBasedWithExternalTypeId

protected Object deserializeUsingPropertyBasedWithExternalTypeId(JsonParser p,
                                                                 DeserializationContext ctxt)
                                                          throws IOException

Throws:: IOException

_creatorReturnedNullException
```
protected Exception _creatorReturnedNullException()
```
Helper method for getting a lazily construct exception to be reported to DeserializationContext.handleInstantiationProblem(Class, Object, Throwable).

Since:

2.8

Class BeanDeserializer

Nested Class Summary

Nested classes/interfaces inherited from class com.fasterxml.jackson.databind.JsonDeserializer

Field Summary

Fields inherited from class com.fasterxml.jackson.databind.deser.BeanDeserializerBase

Fields inherited from class com.fasterxml.jackson.databind.deser.std.StdDeserializer

Constructor Summary

Method Summary

Methods inherited from class com.fasterxml.jackson.databind.deser.BeanDeserializerBase

Methods inherited from class com.fasterxml.jackson.databind.deser.std.StdDeserializer

Methods inherited from class com.fasterxml.jackson.databind.JsonDeserializer

Methods inherited from class java.lang.Object

Field Detail

_nullFromCreator

Constructor Detail

BeanDeserializer

BeanDeserializer

BeanDeserializer

BeanDeserializer

BeanDeserializer

BeanDeserializer

BeanDeserializer

BeanDeserializer

BeanDeserializer

Method Detail

unwrappingDeserializer

withObjectIdReader

withByNameInclusion

withIgnoreAllUnknown

withBeanProperties

asArrayDeserializer

deserialize

_deserializeOther

_missingToken

deserialize

deserializeFromObject

_deserializeUsingPropertyBased

_deserializeWithErrorWrapping

deserializeFromNull

_deserializeFromArray

deserializeWithView

deserializeWithUnwrapped

deserializeWithUnwrapped

deserializeUsingPropertyBasedWithUnwrapped

deserializeWithExternalTypeId

deserializeWithExternalTypeId

_deserializeWithExternalTypeId

deserializeUsingPropertyBasedWithExternalTypeId

_creatorReturnedNullException