ContainerDeserializerBase (jackson-databind 2.9.10)

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

All Implemented Interfaces:

NullValueProvider, ValueInstantiator.Gettable, Serializable

Direct Known Subclasses:

CollectionDeserializer, EnumMapDeserializer, MapDeserializer, MapEntryDeserializer, ObjectArrayDeserializer, StringCollectionDeserializer
```
public abstract class ContainerDeserializerBase<T>
extends StdDeserializer<T>
implements ValueInstantiator.Gettable
```
Intermediate base deserializer class that adds more shared accessor so that other classes can access information about contained (value) types

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 JavaType`	`_containerType`
`protected NullValueProvider`	`_nullProvider` Handler we need for dealing with nulls.
`protected boolean`	`_skipNullValues` Marker flag set if the `_nullProvider` indicates that all null content values should be skipped (instead of being possibly converted).
`protected Boolean`	`_unwrapSingle` Specific override for this instance (from proper, or global per-type overrides) to indicate whether single value may be taken to mean an unwrapped one-element array or not.

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

Constructor Summary

Constructors
Modifier	Constructor and Description
`protected`	`ContainerDeserializerBase(ContainerDeserializerBase<?> base)`
`protected`	`ContainerDeserializerBase(ContainerDeserializerBase<?> base, NullValueProvider nuller, Boolean unwrapSingle)`
`protected`	`ContainerDeserializerBase(JavaType selfType)`
`protected`	`ContainerDeserializerBase(JavaType selfType, NullValueProvider nuller, Boolean unwrapSingle)`

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`SettableBeanProperty`	`findBackReference(String refName)` Method needed by `BeanDeserializerFactory` to properly link managed- and back-reference pairs.
`abstract JsonDeserializer<Object>`	`getContentDeserializer()` Accesor for deserializer use for deserializing content values.
`JavaType`	`getContentType()` Accessor for declared type of contained value elements; either exact type, or one of its supertypes.
`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).
`ValueInstantiator`	`getValueInstantiator()`
`JavaType`	`getValueType()` Exact structured type this deserializer handles, if known.
`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 <BOGUS> BOGUS`	`wrapAndThrow(Throwable t, Object ref, String key)` Helper method called by various Map(-like) deserializers.

Methods inherited from class com.fasterxml.jackson.databind.deser.std.StdDeserializer
_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, deserializeWithType, findContentNullProvider, findContentNullStyle, findConvertingContentDeserializer, findDeserializer, findFormatFeature, findFormatOverrides, findValueNullProvider, getValueClass, handledType, handleMissingEndArrayForSingle, handleUnknownProperty, isDefaultDeserializer, isDefaultKeyDeserializer, parseDouble

Methods inherited from class com.fasterxml.jackson.databind.JsonDeserializer
deserialize, deserialize, getDelegatee, getEmptyValue, getKnownPropertyNames, getNullAccessPattern, getNullValue, getNullValue, getObjectIdReader, isCachable, replaceDelegatee, unwrappingDeserializer

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

- Field Detail
  - _containerType
```
protected final JavaType _containerType
```
  - _nullProvider
```
protected final NullValueProvider _nullProvider
```
    Handler we need for dealing with nulls.
    
    Since:
    
    2.9
  - _unwrapSingle
```
protected final Boolean _unwrapSingle
```
    Specific override for this instance (from proper, or global per-type overrides) to indicate whether single value may be taken to mean an unwrapped one-element array or not. If null, left to global defaults.
    
    Since:
    
    2.9 (demoted from sub-classes where added in 2.7)
  - _skipNullValues
```
protected final boolean _skipNullValues
```
    Marker flag set if the _nullProvider indicates that all null content values should be skipped (instead of being possibly converted).
    
    Since:
    
    2.9
- Constructor Detail
  - ContainerDeserializerBase
```
protected ContainerDeserializerBase(JavaType selfType,
                                    NullValueProvider nuller,
                                    Boolean unwrapSingle)
```
  - ContainerDeserializerBase
```
protected ContainerDeserializerBase(JavaType selfType)
```
  - ContainerDeserializerBase
```
protected ContainerDeserializerBase(ContainerDeserializerBase<?> base)
```
    Since:
    
    2.9
  - ContainerDeserializerBase
```
protected ContainerDeserializerBase(ContainerDeserializerBase<?> base,
                                    NullValueProvider nuller,
                                    Boolean unwrapSingle)
```
    Since:
    
    2.9
- Method Detail
  - getValueType
```
public JavaType getValueType()
```
    Description copied from class: StdDeserializer
    
    Exact structured type this deserializer handles, if known.
    Default implementation just returns null.
    
    Overrides:
    
    getValueType in class StdDeserializer<T>
  - supportsUpdate
```
public Boolean supportsUpdate(DeserializationConfig config)
```
    Description copied from class: JsonDeserializer
    
    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 deserialization 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 JsonDeserializer<T>
  - findBackReference
```
public SettableBeanProperty findBackReference(String refName)
```
    Description copied from class: JsonDeserializer
    
    Method needed by BeanDeserializerFactory to properly link managed- and back-reference pairs.
    
    Overrides:
    
    findBackReference in class JsonDeserializer<T>
  - getContentType
```
public JavaType getContentType()
```
    Accessor for declared type of contained value elements; either exact type, or one of its supertypes.
  - getContentDeserializer
```
public abstract JsonDeserializer<Object> getContentDeserializer()
```
    Accesor for deserializer use for deserializing content values.
  - getValueInstantiator
```
public ValueInstantiator getValueInstantiator()
```
    Specified by:
    
    getValueInstantiator in interface ValueInstantiator.Gettable
    
    Since:
    
    2.9
  - getEmptyAccessPattern
```
public AccessPattern getEmptyAccessPattern()
```
    Description copied from class: JsonDeserializer
    
    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.
    
    Overrides:
    
    getEmptyAccessPattern in class JsonDeserializer<T>
  - getEmptyValue
```
public Object getEmptyValue(DeserializationContext ctxt)
                     throws JsonMappingException
```
    Description copied from class: JsonDeserializer
    
    Method called to determine value to be used for "empty" values (most commonly when deserializing from empty JSON Strings). Usually this is same as 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.
    
    Overrides:
    
    getEmptyValue in class JsonDeserializer<T>
    
    Throws:
    
    JsonMappingException
  - wrapAndThrow
```
protected <BOGUS> BOGUS wrapAndThrow(Throwable t,
                                     Object ref,
                                     String key)
                              throws IOException
```
    Helper method called by various Map(-like) deserializers.
    
    Throws:
    
    IOException

Class ContainerDeserializerBase<T>

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.std.StdDeserializer

Constructor Summary

Method Summary

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

_containerType

_nullProvider

_unwrapSingle

_skipNullValues

Constructor Detail

ContainerDeserializerBase

ContainerDeserializerBase

ContainerDeserializerBase

ContainerDeserializerBase

Method Detail

getValueType

supportsUpdate

findBackReference

getContentType

getContentDeserializer

getValueInstantiator

getEmptyAccessPattern

getEmptyValue

wrapAndThrow