DeserializationContext (jackson-databind 2.14.0)

java.lang.Object
- com.fasterxml.jackson.databind.DatabindContext
- - com.fasterxml.jackson.databind.DeserializationContext

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

DefaultDeserializationContext
```
public abstract class DeserializationContext
extends DatabindContext
implements Serializable
```
Context for the process of deserialization a single root-level value. Used to allow passing in configuration settings and reusable temporary objects (scrap arrays, containers).
Instance life-cycle is such that a partially configured "blueprint" object is registered with ObjectMapper (and ObjectReader, and when actual instance is needed for deserialization, a fully configured instance will be created using a method in extended internal API of sub-class (DefaultDeserializationContext.createInstance(com.fasterxml.jackson.databind.DeserializationConfig, com.fasterxml.jackson.core.JsonParser, com.fasterxml.jackson.databind.InjectableValues)). Each instance is guaranteed to only be used from single-threaded context; instances may be reused if (and only if) no configuration has changed.
Defined as abstract class so that implementations must define methods for reconfiguring blueprints and creating instances.

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`protected ArrayBuilders`	`_arrayBuilders`
`protected ContextAttributes`	`_attributes` Lazily-constructed holder for per-call attributes.
`protected DeserializerCache`	`_cache` Object that handle details of `JsonDeserializer` caching.
`protected DeserializationConfig`	`_config` Generic deserialization processing configuration
`protected LinkedNode<JavaType>`	`_currentType` Type of `JsonDeserializer` (or, more specifically, `ContextualDeserializer`) that is being contextualized currently.
`protected DateFormat`	`_dateFormat`
`protected DeserializerFactory`	`_factory` Read-only factory instance; exposed to let owners (`ObjectMapper`, `ObjectReader`) access it.
`protected int`	`_featureFlags` Bitmap of `DeserializationFeature`s that are enabled
`protected InjectableValues`	`_injectableValues` Object used for resolving references to injectable values.
`protected ObjectBuffer`	`_objectBuffer`
`protected com.fasterxml.jackson.core.JsonParser`	`_parser` Currently active parser used for deserialization.
`protected com.fasterxml.jackson.core.util.JacksonFeatureSet<com.fasterxml.jackson.core.StreamReadCapability>`	`_readCapabilities` Capabilities of the input format.
`protected Class<?>`	`_view` Currently active view, if any.

Constructor Summary

Constructors
Modifier	Constructor and Description
`protected`	`DeserializationContext(DeserializationContext src)` Copy-constructor for use with `copy()` by `ObjectMapper.copy()`
`protected`	`DeserializationContext(DeserializationContext src, DeserializationConfig config)` Constructor used for creating bogus per-call style instance, but without underlying parser: needed for deserializer pre-fetching
`protected`	`DeserializationContext(DeserializationContext src, DeserializationConfig config, com.fasterxml.jackson.core.JsonParser p, InjectableValues injectableValues)` Constructor used for creating actual per-call instances.
`protected`	`DeserializationContext(DeserializationContext src, DeserializerFactory factory)`
`protected`	`DeserializationContext(DeserializerFactory df)`
`protected`	`DeserializationContext(DeserializerFactory df, DeserializerCache cache)`

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`protected DateFormat`	`_getDateFormat()`
`protected boolean`	`_isCompatible(Class<?> target, Object value)`
`protected String`	`_shapeForToken(com.fasterxml.jackson.core.JsonToken t)` Helper method for constructing description like "Object value" given `JsonToken` encountered.
`TokenBuffer`	`bufferAsCopyOfValue(com.fasterxml.jackson.core.JsonParser p)` Convenience method, equivalent to:
`TokenBuffer`	`bufferForInputBuffering()` Convenience method that is equivalent to:
`TokenBuffer`	`bufferForInputBuffering(com.fasterxml.jackson.core.JsonParser p)` Factory method used for creating `TokenBuffer` to temporarily contain copy of content read from specified parser; usually for purpose of reading contents later on (possibly augmeneted with injected additional content)
`boolean`	`canOverrideAccessModifiers()` Convenience method for accessing serialization view in use (if any); equivalent to:
`abstract void`	`checkUnresolvedObjectId()` Method called to ensure that every object id encounter during processing are resolved.
`Calendar`	`constructCalendar(Date d)` Convenience method for constructing Calendar instance set to specified time, to be modified and used by caller.
`JavaType`	`constructSpecializedType(JavaType baseType, Class<?> subclass)` Convenience method for constructing subtypes, retaining generic type parameter (if any).
`JavaType`	`constructType(Class<?> cls)` Convenience method, functionally equivalent to:
`abstract JsonDeserializer<Object>`	`deserializerInstance(Annotated annotated, Object deserDef)`
`JsonMappingException`	`endOfInputException(Class<?> instClass)` Deprecated. Since 2.8; currently no way to catch EOF at databind level
`String`	`extractScalarFromObject(com.fasterxml.jackson.core.JsonParser p, JsonDeserializer<?> deser, Class<?> scalarType)` Method to call in case incoming shape is Object Value (and parser thereby points to `JsonToken.START_OBJECT` token), but a Scalar value (potentially coercible from String value) is expected.
`Class<?>`	`findClass(String className)` Helper method that is to be used when resolving basic class name into Class instance, the reason being that it may be necessary to work around various ClassLoader limitations, as well as to handle primitive type signatures.
`CoercionAction`	`findCoercionAction(LogicalType targetType, Class<?> targetClass, CoercionInputShape inputShape)` General-purpose accessor for finding what to do when specified coercion from shape that is now always allowed to be coerced from is requested.
`CoercionAction`	`findCoercionFromBlankString(LogicalType targetType, Class<?> targetClass, CoercionAction actionIfBlankNotAllowed)` More specialized accessor called in case of input being a blank String (one consisting of only white space characters with length of at least one).
`JsonDeserializer<Object>`	`findContextualValueDeserializer(JavaType type, BeanProperty prop)` Method for finding a value deserializer, and creating a contextual version if necessary, for value reached via specified property.
`Object`	`findInjectableValue(Object valueId, BeanProperty forProperty, Object beanInstance)`
`KeyDeserializer`	`findKeyDeserializer(JavaType keyType, BeanProperty prop)` Convenience method, functionally same as:
`JsonDeserializer<Object>`	`findNonContextualValueDeserializer(JavaType type)` Variant that will try to locate deserializer for current type, but without performing any contextualization (unlike `findContextualValueDeserializer(com.fasterxml.jackson.databind.JavaType, com.fasterxml.jackson.databind.BeanProperty)`) or checking for need to create a `TypeDeserializer` (unlike `findRootValueDeserializer(JavaType)`.
`abstract ReadableObjectId`	`findObjectId(Object id, ObjectIdGenerator<?> generator, ObjectIdResolver resolver)` Method called to find and return entry corresponding to given Object Id: will add an entry if necessary, and never returns null
`JsonDeserializer<Object>`	`findRootValueDeserializer(JavaType type)` Method for finding a deserializer for root-level value.
`Class<?>`	`getActiveView()` Accessor for locating currently active view, if any; returns null if no view has been set.
`AnnotationIntrospector`	`getAnnotationIntrospector()` Convenience method for accessing serialization view in use (if any); equivalent to:
`ArrayBuilders`	`getArrayBuilders()` Method for accessing object useful for building arrays of primitive types (such as int[]).
`Object`	`getAttribute(Object key)` Method for accessing attributes available in this context.
`com.fasterxml.jackson.core.Base64Variant`	`getBase64Variant()` Convenience method for accessing the default Base64 encoding used for decoding base64 encoded binary content.
`DeserializationConfig`	`getConfig()` Accessor to currently active configuration (both per-request configs and per-mapper config).
`JavaType`	`getContextualType()` Accessor to `JavaType` of currently contextualized `ContextualDeserializer`, if any.
`protected DateFormat`	`getDateFormat()` Deprecated.
`JsonFormat.Value`	`getDefaultPropertyFormat(Class<?> baseType)`
`int`	`getDeserializationFeatures()` Bulk access method for getting the bit mask of all `DeserializationFeature`s that are enabled.
`DeserializerFactory`	`getFactory()` Method for getting current `DeserializerFactory`.
`Locale`	`getLocale()` Method for accessing default Locale to use: convenience method for
`JsonNodeFactory`	`getNodeFactory()` Convenience method, functionally equivalent to:
`com.fasterxml.jackson.core.JsonParser`	`getParser()` Method for accessing the currently active parser.
`TimeZone`	`getTimeZone()` Method for accessing default TimeZone to use: convenience method for
`TypeFactory`	`getTypeFactory()`
`void`	`handleBadMerge(JsonDeserializer<?> deser)` Method that deserializer may call if it is called to do an update ("merge") but deserializer operates on a non-mergeable type.
`Object`	`handleInstantiationProblem(Class<?> instClass, Object argument, Throwable t)` Method that deserializers should call if they fail to instantiate value due to an exception that was thrown by constructor (or other mechanism used to create instances).
`Object`	`handleMissingInstantiator(Class<?> instClass, ValueInstantiator valueInst, com.fasterxml.jackson.core.JsonParser p, String msg, Object... msgArgs)` Method that deserializers should call if they fail to instantiate value due to lack of viable instantiator (usually creator, that is, constructor or static factory method).
`JavaType`	`handleMissingTypeId(JavaType baseType, TypeIdResolver idResolver, String extraDesc)`
`JsonDeserializer<?>`	`handlePrimaryContextualization(JsonDeserializer<?> deser, BeanProperty prop, JavaType type)` Method called for primary property deserializers (ones directly created to deserialize values of a POJO property), to handle details of resolving `ContextualDeserializer` with given property context.
`JsonDeserializer<?>`	`handleSecondaryContextualization(JsonDeserializer<?> deser, BeanProperty prop, JavaType type)` Method called for secondary property deserializers (ones NOT directly created to deal with an annotatable POJO property, but instead created as a component -- such as value deserializers for structured types, or deserializers for root values) to handle details of resolving `ContextualDeserializer` with given property context.
`Object`	`handleUnexpectedToken(Class<?> instClass, com.fasterxml.jackson.core.JsonParser p)` Method that deserializers should call if the first token of the value to deserialize is of unexpected type (that is, type of token that deserializer cannot handle).
`Object`	`handleUnexpectedToken(Class<?> instClass, com.fasterxml.jackson.core.JsonToken t, com.fasterxml.jackson.core.JsonParser p, String msg, Object... msgArgs)` Method that deserializers should call if the first token of the value to deserialize is of unexpected type (that is, type of token that deserializer cannot handle).
`Object`	`handleUnexpectedToken(JavaType targetType, com.fasterxml.jackson.core.JsonParser p)` Method that deserializers should call if the first token of the value to deserialize is of unexpected type (that is, type of token that deserializer cannot handle).
`Object`	`handleUnexpectedToken(JavaType targetType, com.fasterxml.jackson.core.JsonToken t, com.fasterxml.jackson.core.JsonParser p, String msg, Object... msgArgs)` Method that deserializers should call if the first token of the value to deserialize is of unexpected type (that is, type of token that deserializer cannot handle).
`boolean`	`handleUnknownProperty(com.fasterxml.jackson.core.JsonParser p, JsonDeserializer<?> deser, Object instanceOrClass, String propName)` Method that deserializers should call if they encounter an unrecognized property (and once that is not explicitly designed as ignorable), to inform possibly configured `DeserializationProblemHandler`s and let it handle the problem.
`JavaType`	`handleUnknownTypeId(JavaType baseType, String id, TypeIdResolver idResolver, String extraDesc)` Method that deserializers should call if they encounter a type id (for polymorphic deserialization) that cannot be resolved to an actual type; usually since there is no mapping defined.
`Object`	`handleWeirdKey(Class<?> keyClass, String keyValue, String msg, Object... msgArgs)` Method that deserializers should call if they encounter a String value that cannot be converted to expected key of a `Map` valued property.
`Object`	`handleWeirdNativeValue(JavaType targetType, Object badValue, com.fasterxml.jackson.core.JsonParser p)`
`Object`	`handleWeirdNumberValue(Class<?> targetClass, Number value, String msg, Object... msgArgs)` Method that deserializers should call if they encounter a numeric value that cannot be converted to target property type, in cases where some numeric values could be acceptable (either with different settings, or different numeric value).
`Object`	`handleWeirdStringValue(Class<?> targetClass, String value, String msg, Object... msgArgs)` Method that deserializers should call if they encounter a String value that cannot be converted to target property type, in cases where some String values could be acceptable (either with different settings, or different value).
`boolean`	`hasDeserializationFeatures(int featureMask)` Bulk access method for checking that all features specified by mask are enabled.
`boolean`	`hasSomeOfFeatures(int featureMask)` Bulk access method for checking that at least one of features specified by mask is enabled.
`boolean`	`hasValueDeserializerFor(JavaType type, AtomicReference<Throwable> cause)` Method for checking whether we could find a deserializer for given type.
`JsonMappingException`	`instantiationException(Class<?> instClass, String msg0)` Helper method for constructing instantiation exception for specified type, to indicate that instantiation failed due to missing instantiator (creator; constructor or factory method).
`JsonMappingException`	`instantiationException(Class<?> instClass, Throwable cause)` Helper method for constructing instantiation exception for specified type, to indicate problem with physically constructing instance of specified class (missing constructor, exception from constructor)
`JsonMappingException`	`invalidTypeIdException(JavaType baseType, String typeId, String extraDesc)` Helper method for constructing exception to indicate that given type id could not be resolved to a valid subtype of specified base type.
`boolean`	`isEnabled(DatatypeFeature feature)` Method for checking whether specified datatype feature is enabled or not.
`boolean`	`isEnabled(DeserializationFeature feat)` Convenience method for checking whether specified on/off feature is enabled
`boolean`	`isEnabled(MapperFeature feature)` Convenience method for checking whether specified Mapper feature is enabled or not.
`boolean`	`isEnabled(com.fasterxml.jackson.core.StreamReadCapability cap)` Accessor for checking whether input format has specified capability or not.
`abstract KeyDeserializer`	`keyDeserializerInstance(Annotated annotated, Object deserDef)`
`ObjectBuffer`	`leaseObjectBuffer()` Method that can be used to get access to a reusable ObjectBuffer, useful for efficiently constructing Object arrays and Lists.
`JsonMappingException`	`mappingException(Class<?> targetClass)` Deprecated. Since 2.8 use `handleUnexpectedToken(Class, JsonParser)` instead
`JsonMappingException`	`mappingException(Class<?> targetClass, com.fasterxml.jackson.core.JsonToken token)` Deprecated. Since 2.8 use `handleUnexpectedToken(Class, JsonParser)` instead
`JsonMappingException`	`mappingException(String message)` Deprecated. Since 2.9 use more specific error reporting methods instead
`JsonMappingException`	`mappingException(String msg, Object... msgArgs)` Deprecated. Since 2.9 use more specific error reporting methods instead
`JsonMappingException`	`missingTypeIdException(JavaType baseType, String extraDesc)`
`Date`	`parseDate(String dateStr)` Convenience method for parsing a Date from given String, using currently configured date format (accessed using `MapperConfig.getDateFormat()`).
`<T> T`	`readPropertyValue(com.fasterxml.jackson.core.JsonParser p, BeanProperty prop, Class<T> type)` Convenience method that may be used by composite or container deserializers, for reading one-off values for the composite type, taking into account annotations that the property (passed to this method -- usually property that has custom serializer that called this method) has.
`<T> T`	`readPropertyValue(com.fasterxml.jackson.core.JsonParser p, BeanProperty prop, JavaType type)` Same as `readPropertyValue(JsonParser, BeanProperty, Class)` but with fully resolved `JavaType` as target: needs to be used for generic types, for example.
`JsonNode`	`readTree(com.fasterxml.jackson.core.JsonParser p)` Convenience method for reading the value that passed `JsonParser` points to as a `JsonNode`.
`<T> T`	`readTreeAsValue(JsonNode n, Class<T> targetType)` Helper method similar to `ObjectReader.treeToValue(TreeNode, Class)` which will read contents of given tree (`JsonNode`) and bind them into specified target type.
`<T> T`	`readTreeAsValue(JsonNode n, JavaType targetType)` Same as `readTreeAsValue(JsonNode, Class)` but will fully resolved `JavaType` as `targetType`
`<T> T`	`readValue(com.fasterxml.jackson.core.JsonParser p, Class<T> type)` Convenience method that may be used by composite or container deserializers, for reading one-off values contained (for sequences, it is more efficient to actually fetch deserializer once for the whole collection).
`<T> T`	`readValue(com.fasterxml.jackson.core.JsonParser p, JavaType type)`
`<T> T`	`reportBadCoercion(JsonDeserializer<?> src, Class<?> targetType, Object inputValue, String msg, Object... msgArgs)` Helper method used to indicate a problem with input in cases where specific input coercion was not allowed.
`<T> T`	`reportBadDefinition(JavaType type, String msg)` Helper method called to indicate a generic problem that stems from type definition(s), not input data, or input/output state; typically this means throwing a `InvalidDefinitionException`.
`<T> T`	`reportBadMerge(JsonDeserializer<?> deser)` Deprecated. Since 2.10 use `handleBadMerge(com.fasterxml.jackson.databind.JsonDeserializer<?>)` instead
`<T> T`	`reportBadPropertyDefinition(BeanDescription bean, BeanPropertyDefinition prop, String msg, Object... msgArgs)` Helper method called to indicate problem in POJO (serialization) definitions or settings regarding specific property (of a type), unrelated to actual JSON content to map.
`<T> T`	`reportBadTypeDefinition(BeanDescription bean, String msg, Object... msgArgs)` Helper method called to indicate problem in POJO (serialization) definitions or settings regarding specific Java type, unrelated to actual JSON content to map.
`<T> T`	`reportInputMismatch(BeanProperty prop, String msg, Object... msgArgs)` Helper method used to indicate a problem with input in cases where more specific `reportXxx()` method was not available.
`<T> T`	`reportInputMismatch(Class<?> targetType, String msg, Object... msgArgs)` Helper method used to indicate a problem with input in cases where more specific `reportXxx()` method was not available.
`<T> T`	`reportInputMismatch(JavaType targetType, String msg, Object... msgArgs)` Helper method used to indicate a problem with input in cases where more specific `reportXxx()` method was not available.
`<T> T`	`reportInputMismatch(JsonDeserializer<?> src, String msg, Object... msgArgs)` Helper method used to indicate a problem with input in cases where more specific `reportXxx()` method was not available.
`void`	`reportMappingException(String msg, Object... msgArgs)` Deprecated. Since 2.9: use a more specific method, or `reportBadDefinition(JavaType, String)`, or `reportInputMismatch(com.fasterxml.jackson.databind.JsonDeserializer<?>, java.lang.String, java.lang.Object...)` instead
`void`	`reportMissingContent(String msg, Object... msgArgs)` Deprecated. Since 2.9: not clear this ever occurs
`<T> T`	`reportPropertyInputMismatch(Class<?> targetType, String propertyName, String msg, Object... msgArgs)` Helper method used to indicate a problem with input in cases where more specific `reportXxx()` method was not available.
`<T> T`	`reportPropertyInputMismatch(JavaType targetType, String propertyName, String msg, Object... msgArgs)` Helper method used to indicate a problem with input in cases where more specific `reportXxx()` method was not available.
`<T> T`	`reportTrailingTokens(Class<?> targetType, com.fasterxml.jackson.core.JsonParser p, com.fasterxml.jackson.core.JsonToken trailingToken)`
`void`	`reportUnknownProperty(Object instanceOrClass, String fieldName, JsonDeserializer<?> deser)` Deprecated. Since 2.8 call `handleUnknownProperty(com.fasterxml.jackson.core.JsonParser, com.fasterxml.jackson.databind.JsonDeserializer<?>, java.lang.Object, java.lang.String)` instead
`<T> T`	`reportUnresolvedObjectId(ObjectIdReader oidReader, Object bean)`
`void`	`reportWrongTokenException(Class<?> targetType, com.fasterxml.jackson.core.JsonToken expToken, String msg, Object... msgArgs)` Method for deserializers to call when the token encountered was of type different than what should be seen at that position, usually within a sequence of expected tokens.
`void`	`reportWrongTokenException(JavaType targetType, com.fasterxml.jackson.core.JsonToken expToken, String msg, Object... msgArgs)` Method for deserializers to call when the token encountered was of type different than what should be seen at that position, usually within a sequence of expected tokens.
`void`	`reportWrongTokenException(JsonDeserializer<?> deser, com.fasterxml.jackson.core.JsonToken expToken, String msg, Object... msgArgs)` Method for deserializers to call when the token encountered was of type different than what should be seen at that position, usually within a sequence of expected tokens.
`void`	`reportWrongTokenException(com.fasterxml.jackson.core.JsonParser p, com.fasterxml.jackson.core.JsonToken expToken, String msg, Object... msgArgs)` Deprecated.
`void`	`returnObjectBuffer(ObjectBuffer buf)` Method to call to return object buffer previously leased with `leaseObjectBuffer()`.
`DeserializationContext`	`setAttribute(Object key, Object value)` Method for setting per-call value of given attribute.
`JsonMappingException`	`unknownTypeException(JavaType type, String id, String extraDesc)` Deprecated. Since 2.8 use `handleUnknownTypeId(com.fasterxml.jackson.databind.JavaType, java.lang.String, com.fasterxml.jackson.databind.jsontype.TypeIdResolver, java.lang.String)` instead
`JsonMappingException`	`weirdKeyException(Class<?> keyClass, String keyValue, String msg)` Helper method for constructing exception to indicate that given JSON Object field name was not in format to be able to deserialize specified key type.
`JsonMappingException`	`weirdNativeValueException(Object value, Class<?> instClass)` Helper method for constructing exception to indicate that input JSON token of type "native value" (see `JsonToken.VALUE_EMBEDDED_OBJECT`) is of incompatible type (and there is no delegating creator or such to use) and can not be used to construct value of specified type (usually POJO).
`JsonMappingException`	`weirdNumberException(Number value, Class<?> instClass, String msg)` Helper method for constructing exception to indicate that input JSON Number was not suitable for deserializing into given target type.
`JsonMappingException`	`weirdStringException(String value, Class<?> instClass, String msgBase)` Helper method for constructing exception to indicate that input JSON String was not suitable for deserializing into given target type.
`JsonMappingException`	`wrongTokenException(com.fasterxml.jackson.core.JsonParser p, Class<?> targetType, com.fasterxml.jackson.core.JsonToken expToken, String extra)`
`JsonMappingException`	`wrongTokenException(com.fasterxml.jackson.core.JsonParser p, JavaType targetType, com.fasterxml.jackson.core.JsonToken expToken, String extra)` Helper method for constructing `JsonMappingException` to indicate that the token encountered was of type different than what should be seen at that position, usually within a sequence of expected tokens.
`JsonMappingException`	`wrongTokenException(com.fasterxml.jackson.core.JsonParser p, com.fasterxml.jackson.core.JsonToken expToken, String msg)` Deprecated.

Methods inherited from class com.fasterxml.jackson.databind.DatabindContext
_colonConcat, _desc, _format, _quotedString, _throwNotASubtype, _throwSubtypeClassNotAllowed, _throwSubtypeNameNotAllowed, _truncate, constructType, converterInstance, objectIdGeneratorInstance, objectIdResolverInstance, reportBadDefinition, resolveAndValidateSubType, resolveSubType

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

- Field Detail
  - _cache
```
protected final DeserializerCache _cache
```
    Object that handle details of JsonDeserializer caching.
  - _factory
```
protected final DeserializerFactory _factory
```
    Read-only factory instance; exposed to let owners (ObjectMapper, ObjectReader) access it.
  - _config
```
protected final DeserializationConfig _config
```
    Generic deserialization processing configuration
  - _featureFlags
```
protected final int _featureFlags
```
    Bitmap of DeserializationFeatures that are enabled
  - _readCapabilities
```
protected final com.fasterxml.jackson.core.util.JacksonFeatureSet<com.fasterxml.jackson.core.StreamReadCapability> _readCapabilities
```
    Capabilities of the input format.
    
    Since:
    
    2.12
  - _view
```
protected final Class<?> _view
```
    Currently active view, if any.
  - _parser
```
protected transient com.fasterxml.jackson.core.JsonParser _parser
```
    Currently active parser used for deserialization. May be different from the outermost parser when content is buffered.
  - _injectableValues
```
protected final InjectableValues _injectableValues
```
    Object used for resolving references to injectable values.
  - _arrayBuilders
```
protected transient ArrayBuilders _arrayBuilders
```
  - _objectBuffer
```
protected transient ObjectBuffer _objectBuffer
```
  - _dateFormat
```
protected transient DateFormat _dateFormat
```
  - _attributes
```
protected transient ContextAttributes _attributes
```
    Lazily-constructed holder for per-call attributes.
    
    Since:
    
    2.3
  - _currentType
```
protected LinkedNode<JavaType> _currentType
```
    Type of JsonDeserializer (or, more specifically, ContextualDeserializer) that is being contextualized currently.
    
    Since:
    
    2.5
- Constructor Detail
  - DeserializationContext
```
protected DeserializationContext(DeserializerFactory df)
```
  - DeserializationContext
```
protected DeserializationContext(DeserializerFactory df,
                                 DeserializerCache cache)
```
  - DeserializationContext
```
protected DeserializationContext(DeserializationContext src,
                                 DeserializerFactory factory)
```
  - DeserializationContext
```
protected DeserializationContext(DeserializationContext src,
                                 DeserializationConfig config,
                                 com.fasterxml.jackson.core.JsonParser p,
                                 InjectableValues injectableValues)
```
    Constructor used for creating actual per-call instances.
  - DeserializationContext
```
protected DeserializationContext(DeserializationContext src,
                                 DeserializationConfig config)
```
    Constructor used for creating bogus per-call style instance, but without underlying parser: needed for deserializer pre-fetching
    
    Since:
    
    2.12
  - DeserializationContext
```
protected DeserializationContext(DeserializationContext src)
```
    Copy-constructor for use with copy() by ObjectMapper.copy()
- Method Detail
  - getConfig
```
public DeserializationConfig getConfig()
```
    Description copied from class: DatabindContext
    
    Accessor to currently active configuration (both per-request configs and per-mapper config).
    
    Specified by:
    
    getConfig in class DatabindContext
  - getActiveView
```
public final Class<?> getActiveView()
```
    Description copied from class: DatabindContext
    
    Accessor for locating currently active view, if any; returns null if no view has been set.
    
    Specified by:
    
    getActiveView in class DatabindContext
  - canOverrideAccessModifiers
```
public final boolean canOverrideAccessModifiers()
```
    Description copied from class: DatabindContext
    Convenience method for accessing serialization view in use (if any); equivalent to:
```
   getConfig().canOverrideAccessModifiers();
```
    Specified by:
    
    canOverrideAccessModifiers in class DatabindContext
  - isEnabled
```
public final boolean isEnabled(MapperFeature feature)
```
    Description copied from class: DatabindContext
    Convenience method for checking whether specified Mapper feature is enabled or not. Shortcut for:
```
  getConfig().isEnabled(feature);
```
    Specified by:
    
    isEnabled in class DatabindContext
  - isEnabled
```
public final boolean isEnabled(DatatypeFeature feature)
```
    Description copied from class: DatabindContext
    
    Method for checking whether specified datatype feature is enabled or not.
    
    Specified by:
    
    isEnabled in class DatabindContext
  - getDefaultPropertyFormat
```
public final JsonFormat.Value getDefaultPropertyFormat(Class<?> baseType)
```
    Specified by:
    
    getDefaultPropertyFormat in class DatabindContext
  - getAnnotationIntrospector
```
public final AnnotationIntrospector getAnnotationIntrospector()
```
    Description copied from class: DatabindContext
    Convenience method for accessing serialization view in use (if any); equivalent to:
```
   getConfig().getAnnotationIntrospector();
```
    Specified by:
    
    getAnnotationIntrospector in class DatabindContext
  - getTypeFactory
```
public final TypeFactory getTypeFactory()
```
    Specified by:
    
    getTypeFactory in class DatabindContext
  - constructSpecializedType
```
public JavaType constructSpecializedType(JavaType baseType,
                                         Class<?> subclass)
                                  throws IllegalArgumentException
```
    Description copied from class: DatabindContext
    
    Convenience method for constructing subtypes, retaining generic type parameter (if any).
    Note: since 2.11 handling has varied a bit across serialization, deserialization.
    
    Specified by:
    
    constructSpecializedType in class DatabindContext
    
    Throws:
    
    IllegalArgumentException
  - getLocale
```
public Locale getLocale()
```
    Method for accessing default Locale to use: convenience method for
```
   getConfig().getLocale();
```
    Specified by:
    
    getLocale in class DatabindContext
  - getTimeZone
```
public TimeZone getTimeZone()
```
    Method for accessing default TimeZone to use: convenience method for
```
   getConfig().getTimeZone();
```
    Specified by:
    
    getTimeZone in class DatabindContext
  - getAttribute
```
public Object getAttribute(Object key)
```
    Description copied from class: DatabindContext
    
    Method for accessing attributes available in this context. Per-call attributes have highest precedence; attributes set via ObjectReader or ObjectWriter have lower precedence.
    
    Specified by:
    
    getAttribute in class DatabindContext
    
    Parameters:
    
    key - Key of the attribute to get
    
    Returns:
    
    Value of the attribute, if any; null otherwise
  - setAttribute
```
public DeserializationContext setAttribute(Object key,
                                           Object value)
```
    Description copied from class: DatabindContext
    
    Method for setting per-call value of given attribute. This will override any previously defined value for the attribute within this context.
    
    Specified by:
    
    setAttribute in class DatabindContext
    
    Parameters:
    
    key - Key of the attribute to set
    
    value - Value to set attribute to
    
    Returns:
    
    This context object, to allow chaining
  - getContextualType
```
public JavaType getContextualType()
```
    Accessor to JavaType of currently contextualized ContextualDeserializer, if any. This is sometimes useful for generic JsonDeserializers that do not get passed (or do not retain) type information when being constructed: happens for example for deserializers constructed from annotations.
    
    Returns:
    
    Type of ContextualDeserializer being contextualized, if process is on-going; null if not.
    
    Since:
    
    2.5
  - getFactory
```
public DeserializerFactory getFactory()
```
    Method for getting current DeserializerFactory.
  - isEnabled
```
public final boolean isEnabled(DeserializationFeature feat)
```
    Convenience method for checking whether specified on/off feature is enabled
  - isEnabled
```
public final boolean isEnabled(com.fasterxml.jackson.core.StreamReadCapability cap)
```
    Accessor for checking whether input format has specified capability or not.
    
    Returns:
    
    True if input format has specified capability; false if not
    
    Since:
    
    2.12
  - getDeserializationFeatures
```
public final int getDeserializationFeatures()
```
    Bulk access method for getting the bit mask of all DeserializationFeatures that are enabled.
    
    Since:
    
    2.6
  - hasDeserializationFeatures
```
public final boolean hasDeserializationFeatures(int featureMask)
```
    Bulk access method for checking that all features specified by mask are enabled.
    
    Since:
    
    2.3
  - hasSomeOfFeatures
```
public final boolean hasSomeOfFeatures(int featureMask)
```
    Bulk access method for checking that at least one of features specified by mask is enabled.
    
    Since:
    
    2.6
  - getParser
```
public final com.fasterxml.jackson.core.JsonParser getParser()
```
    Method for accessing the currently active parser. May be different from the outermost parser when content is buffered.
    Use of this method is discouraged: if code has direct access to the active parser, that should be used instead.
  - findInjectableValue
```
public final Object findInjectableValue(Object valueId,
                                        BeanProperty forProperty,
                                        Object beanInstance)
                                 throws JsonMappingException
```
    Throws:
    
    JsonMappingException
  - getBase64Variant
```
public final com.fasterxml.jackson.core.Base64Variant getBase64Variant()
```
    Convenience method for accessing the default Base64 encoding used for decoding base64 encoded binary content. Same as calling:
```
  getConfig().getBase64Variant();
```
  - getNodeFactory
```
public final JsonNodeFactory getNodeFactory()
```
    Convenience method, functionally equivalent to:
```
  getConfig().getNodeFactory();
 
```
  - findCoercionAction
```
public CoercionAction findCoercionAction(LogicalType targetType,
                                         Class<?> targetClass,
                                         CoercionInputShape inputShape)
```
    General-purpose accessor for finding what to do when specified coercion from shape that is now always allowed to be coerced from is requested.
    
    Parameters:
    
    targetType - Logical target type of coercion
    
    targetClass - Physical target type of coercion
    
    inputShape - Input shape to coerce from
    
    Returns:
    
    CoercionAction configured for specific coercion
    
    Since:
    
    2.12
  - findCoercionFromBlankString
```
public CoercionAction findCoercionFromBlankString(LogicalType targetType,
                                                  Class<?> targetClass,
                                                  CoercionAction actionIfBlankNotAllowed)
```
    More specialized accessor called in case of input being a blank String (one consisting of only white space characters with length of at least one). Will basically first determine if "blank as empty" is allowed: if not, returns actionIfBlankNotAllowed, otherwise returns action for CoercionInputShape.EmptyString.
    
    Parameters:
    
    targetType - Logical target type of coercion
    
    targetClass - Physical target type of coercion
    
    actionIfBlankNotAllowed - Return value to use in case "blanks as empty" is not allowed
    
    Returns:
    
    CoercionAction configured for specified coercion from blank string
    
    Since:
    
    2.12
  - bufferForInputBuffering
```
public TokenBuffer bufferForInputBuffering(com.fasterxml.jackson.core.JsonParser p)
```
    Factory method used for creating TokenBuffer to temporarily contain copy of content read from specified parser; usually for purpose of reading contents later on (possibly augmeneted with injected additional content)
    
    Since:
    
    2.13
  - bufferForInputBuffering
```
public final TokenBuffer bufferForInputBuffering()
```
    Convenience method that is equivalent to:
```
   ctxt.bufferForInputBuffering(ctxt.getParser());
```
  - bufferAsCopyOfValue
```
public TokenBuffer bufferAsCopyOfValue(com.fasterxml.jackson.core.JsonParser p)
                                throws IOException
```
    Convenience method, equivalent to:
```
 TokenBuffer buffer = ctxt.bufferForInputBuffering(parser);
 buffer.copyCurrentStructure(parser);
 return buffer;
```
    NOTE: the whole "current value" that parser points to is read and buffered, including Object and Array values (if parser pointing to start marker).
    Throws:
    
    IOException
    
    Since:
    
    2.9
  - hasValueDeserializerFor
```
public boolean hasValueDeserializerFor(JavaType type,
                                       AtomicReference<Throwable> cause)
```
    Method for checking whether we could find a deserializer for given type.
    
    Parameters:
    
    type - Type to check
    
    cause - (optional) Reference set to root cause if no deserializer could be found due to exception (to find the reason for failure)
    
    Since:
    
    2.3
  - findContextualValueDeserializer
```
public final JsonDeserializer<Object> findContextualValueDeserializer(JavaType type,
                                                                      BeanProperty prop)
                                                               throws JsonMappingException
```
    Method for finding a value deserializer, and creating a contextual version if necessary, for value reached via specified property.
    
    Throws:
    
    JsonMappingException
  - findNonContextualValueDeserializer
```
public final JsonDeserializer<Object> findNonContextualValueDeserializer(JavaType type)
                                                                  throws JsonMappingException
```
    Variant that will try to locate deserializer for current type, but without performing any contextualization (unlike findContextualValueDeserializer(com.fasterxml.jackson.databind.JavaType, com.fasterxml.jackson.databind.BeanProperty)) or checking for need to create a TypeDeserializer (unlike findRootValueDeserializer(JavaType). This method is usually called from within ResolvableDeserializer.resolve(com.fasterxml.jackson.databind.DeserializationContext), and expectation is that caller then calls either handlePrimaryContextualization(JsonDeserializer, BeanProperty, JavaType) or handleSecondaryContextualization(JsonDeserializer, BeanProperty, JavaType) at a later point, as necessary.
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.5
  - findRootValueDeserializer
```
public final JsonDeserializer<Object> findRootValueDeserializer(JavaType type)
                                                         throws JsonMappingException
```
    Method for finding a deserializer for root-level value.
    
    Throws:
    
    JsonMappingException
  - findKeyDeserializer
```
public final KeyDeserializer findKeyDeserializer(JavaType keyType,
                                                 BeanProperty prop)
                                          throws JsonMappingException
```
    Convenience method, functionally same as:
```
  getDeserializerProvider().findKeyDeserializer(getConfig(), prop.getType(), prop);
```
    Throws:
    
    JsonMappingException
  - findObjectId
```
public abstract ReadableObjectId findObjectId(Object id,
                                              ObjectIdGenerator<?> generator,
                                              ObjectIdResolver resolver)
```
    Method called to find and return entry corresponding to given Object Id: will add an entry if necessary, and never returns null
  - checkUnresolvedObjectId
```
public abstract void checkUnresolvedObjectId()
                                      throws UnresolvedForwardReference
```
    Method called to ensure that every object id encounter during processing are resolved.
    
    Throws:
    
    UnresolvedForwardReference
  - constructType
```
public final JavaType constructType(Class<?> cls)
```
    Convenience method, functionally equivalent to:
```
  getConfig().constructType(cls);
 
```
  - findClass
```
public Class<?> findClass(String className)
                   throws ClassNotFoundException
```
    Helper method that is to be used when resolving basic class name into Class instance, the reason being that it may be necessary to work around various ClassLoader limitations, as well as to handle primitive type signatures.
    
    Throws:
    
    ClassNotFoundException
    
    Since:
    
    2.6
  - leaseObjectBuffer
```
public final ObjectBuffer leaseObjectBuffer()
```
    Method that can be used to get access to a reusable ObjectBuffer, useful for efficiently constructing Object arrays and Lists. Note that leased buffers should be returned once deserializer is done, to allow for reuse during same round of deserialization.
  - returnObjectBuffer
```
public final void returnObjectBuffer(ObjectBuffer buf)
```
    Method to call to return object buffer previously leased with leaseObjectBuffer().
    
    Parameters:
    
    buf - Returned object buffer
  - getArrayBuilders
```
public final ArrayBuilders getArrayBuilders()
```
    Method for accessing object useful for building arrays of primitive types (such as int[]).
  - deserializerInstance
```
public abstract JsonDeserializer<Object> deserializerInstance(Annotated annotated,
                                                              Object deserDef)
                                                       throws JsonMappingException
```
    Throws:
    
    JsonMappingException
  - keyDeserializerInstance
```
public abstract KeyDeserializer keyDeserializerInstance(Annotated annotated,
                                                        Object deserDef)
                                                 throws JsonMappingException
```
    Throws:
    
    JsonMappingException
  - handlePrimaryContextualization
```
public JsonDeserializer<?> handlePrimaryContextualization(JsonDeserializer<?> deser,
                                                          BeanProperty prop,
                                                          JavaType type)
                                                   throws JsonMappingException
```
    Method called for primary property deserializers (ones directly created to deserialize values of a POJO property), to handle details of resolving ContextualDeserializer with given property context.
    
    Parameters:
    
    prop - Property for which the given primary deserializer is used; never null.
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.5
  - handleSecondaryContextualization
```
public JsonDeserializer<?> handleSecondaryContextualization(JsonDeserializer<?> deser,
                                                            BeanProperty prop,
                                                            JavaType type)
                                                     throws JsonMappingException
```
    Method called for secondary property deserializers (ones NOT directly created to deal with an annotatable POJO property, but instead created as a component -- such as value deserializers for structured types, or deserializers for root values) to handle details of resolving ContextualDeserializer with given property context. Given that these deserializers are not directly related to given property (or, in case of root value property, to any property), annotations accessible may or may not be relevant.
    
    Parameters:
    
    prop - Property for which deserializer is used, if any; null when deserializing root values
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.5
  - parseDate
```
public Date parseDate(String dateStr)
               throws IllegalArgumentException
```
    Convenience method for parsing a Date from given String, using currently configured date format (accessed using MapperConfig.getDateFormat()).
    Implementation will handle thread-safety issues related to date formats such that first time this method is called, date format is cloned, and cloned instance will be retained for use during this deserialization round.
    
    Throws:
    
    IllegalArgumentException
  - constructCalendar
```
public Calendar constructCalendar(Date d)
```
    Convenience method for constructing Calendar instance set to specified time, to be modified and used by caller.
  - extractScalarFromObject
```
public String extractScalarFromObject(com.fasterxml.jackson.core.JsonParser p,
                                      JsonDeserializer<?> deser,
                                      Class<?> scalarType)
                               throws IOException
```
    Method to call in case incoming shape is Object Value (and parser thereby points to JsonToken.START_OBJECT token), but a Scalar value (potentially coercible from String value) is expected. This would typically be used to deserializer a Number, Boolean value or some other "simple" unstructured value type.
    
    Parameters:
    
    p - Actual parser to read content from
    
    deser - Deserializer that needs extracted String value
    
    scalarType - Immediate type of scalar to extract; usually type deserializer handles but not always (for example, deserializer for int[] would pass scalar type of int)
    
    Returns:
    
    String value found; not null (exception should be thrown if no suitable value found)
    
    Throws:
    
    IOException - If there are problems either reading content (underlying parser problem) or finding expected scalar value
  - readValue
```
public <T> T readValue(com.fasterxml.jackson.core.JsonParser p,
                       Class<T> type)
                throws IOException
```
    Convenience method that may be used by composite or container deserializers, for reading one-off values contained (for sequences, it is more efficient to actually fetch deserializer once for the whole collection).
    NOTE: when deserializing values of properties contained in composite types, rather use readPropertyValue(JsonParser, BeanProperty, Class); this method does not allow use of contextual annotations.
    
    Throws:
    
    IOException
    
    Since:
    
    2.4
  - readValue
```
public <T> T readValue(com.fasterxml.jackson.core.JsonParser p,
                       JavaType type)
                throws IOException
```
    Throws:
    
    IOException
    
    Since:
    
    2.4
  - readPropertyValue
```
public <T> T readPropertyValue(com.fasterxml.jackson.core.JsonParser p,
                               BeanProperty prop,
                               Class<T> type)
                        throws IOException
```
    Convenience method that may be used by composite or container deserializers, for reading one-off values for the composite type, taking into account annotations that the property (passed to this method -- usually property that has custom serializer that called this method) has.
    
    Parameters:
    
    p - Parser that points to the first token of the value to read
    
    prop - Logical property of a POJO being type
    
    Returns:
    
    Value of type type that was read
    
    Throws:
    
    IOException
    
    Since:
    
    2.4
  - readPropertyValue
```
public <T> T readPropertyValue(com.fasterxml.jackson.core.JsonParser p,
                               BeanProperty prop,
                               JavaType type)
                        throws IOException
```
    Same as readPropertyValue(JsonParser, BeanProperty, Class) but with fully resolved JavaType as target: needs to be used for generic types, for example.
    
    Throws:
    
    IOException
    
    Since:
    
    2.4
  - readTree
```
public JsonNode readTree(com.fasterxml.jackson.core.JsonParser p)
                  throws IOException
```
    Convenience method for reading the value that passed JsonParser points to as a JsonNode.
    
    Parameters:
    
    p - Parser that points to the first token of the value to read
    
    Returns:
    
    Value read as JsonNode
    
    Throws:
    
    IOException
    
    Since:
    
    2.10
  - readTreeAsValue
```
public <T> T readTreeAsValue(JsonNode n,
                             Class<T> targetType)
                      throws IOException
```
    Helper method similar to ObjectReader.treeToValue(TreeNode, Class) which will read contents of given tree (JsonNode) and bind them into specified target type. This is often used in two-phase deserialization in which content is first read as a tree, then manipulated (adding and/or removing properties of Object values, for example), and finally converted into actual target type using default deserialization logic for the type.
    NOTE: deserializer implementations should be careful not to try to recursively deserialize into target type deserializer has registered itself to handle.
    
    Parameters:
    
    n - Tree value to convert, if not null: if null, will simply return null
    
    targetType - Type to deserialize contents of n into (if n not null)
    
    Returns:
    
    Either null (if n was null or a value of type type that was read from non-null n argument
    
    Throws:
    
    IOException
    
    Since:
    
    2.13
  - readTreeAsValue
```
public <T> T readTreeAsValue(JsonNode n,
                             JavaType targetType)
                      throws IOException
```
    Same as readTreeAsValue(JsonNode, Class) but will fully resolved JavaType as targetType
    NOTE: deserializer implementations should be careful not to try to recursively deserialize into target type deserializer has registered itself to handle.
    
    Parameters:
    
    n - Tree value to convert
    
    targetType - Type to deserialize contents of n into
    
    Returns:
    
    Value of type type that was read
    
    Throws:
    
    IOException
    
    Since:
    
    2.13
  - handleUnknownProperty
```
public boolean handleUnknownProperty(com.fasterxml.jackson.core.JsonParser p,
                                     JsonDeserializer<?> deser,
                                     Object instanceOrClass,
                                     String propName)
                              throws IOException
```
    Method that deserializers should call if they encounter an unrecognized property (and once that is not explicitly designed as ignorable), to inform possibly configured DeserializationProblemHandlers and let it handle the problem.
    
    Returns:
    
    True if there was a configured problem handler that was able to handle the problem
    
    Throws:
    
    IOException
  - handleWeirdKey
```
public Object handleWeirdKey(Class<?> keyClass,
                             String keyValue,
                             String msg,
                             Object... msgArgs)
                      throws IOException
```
    Method that deserializers should call if they encounter a String value that cannot be converted to expected key of a Map valued property. Default implementation will try to call DeserializationProblemHandler.handleWeirdNumberValue(com.fasterxml.jackson.databind.DeserializationContext, java.lang.Class<?>, java.lang.Number, java.lang.String) on configured handlers, if any, to allow for recovery; if recovery does not succeed, will throw InvalidFormatException with given message.
    
    Parameters:
    
    keyClass - Expected type for key
    
    keyValue - String value from which to deserialize key
    
    msg - Error message template caller wants to use if exception is to be thrown
    
    msgArgs - Optional arguments to use for message, if any
    
    Returns:
    
    Key value to use
    
    Throws:
    
    IOException - To indicate unrecoverable problem, usually based on msg
    
    Since:
    
    2.8
  - handleWeirdStringValue
```
public Object handleWeirdStringValue(Class<?> targetClass,
                                     String value,
                                     String msg,
                                     Object... msgArgs)
                              throws IOException
```
    Method that deserializers should call if they encounter a String value that cannot be converted to target property type, in cases where some String values could be acceptable (either with different settings, or different value). Default implementation will try to call DeserializationProblemHandler.handleWeirdStringValue(com.fasterxml.jackson.databind.DeserializationContext, java.lang.Class<?>, java.lang.String, java.lang.String) on configured handlers, if any, to allow for recovery; if recovery does not succeed, will throw InvalidFormatException with given message.
    
    Parameters:
    
    targetClass - Type of property into which incoming number should be converted
    
    value - String value from which to deserialize property value
    
    msg - Error message template caller wants to use if exception is to be thrown
    
    msgArgs - Optional arguments to use for message, if any
    
    Returns:
    
    Property value to use
    
    Throws:
    
    IOException - To indicate unrecoverable problem, usually based on msg
    
    Since:
    
    2.8
  - handleWeirdNumberValue
```
public Object handleWeirdNumberValue(Class<?> targetClass,
                                     Number value,
                                     String msg,
                                     Object... msgArgs)
                              throws IOException
```
    Method that deserializers should call if they encounter a numeric value that cannot be converted to target property type, in cases where some numeric values could be acceptable (either with different settings, or different numeric value). Default implementation will try to call DeserializationProblemHandler.handleWeirdNumberValue(com.fasterxml.jackson.databind.DeserializationContext, java.lang.Class<?>, java.lang.Number, java.lang.String) on configured handlers, if any, to allow for recovery; if recovery does not succeed, will throw InvalidFormatException with given message.
    
    Parameters:
    
    targetClass - Type of property into which incoming number should be converted
    
    value - Number value from which to deserialize property value
    
    msg - Error message template caller wants to use if exception is to be thrown
    
    msgArgs - Optional arguments to use for message, if any
    
    Returns:
    
    Property value to use
    
    Throws:
    
    IOException - To indicate unrecoverable problem, usually based on msg
    
    Since:
    
    2.8
  - handleWeirdNativeValue
```
public Object handleWeirdNativeValue(JavaType targetType,
                                     Object badValue,
                                     com.fasterxml.jackson.core.JsonParser p)
                              throws IOException
```
    Throws:
    
    IOException
  - handleMissingInstantiator
```
public Object handleMissingInstantiator(Class<?> instClass,
                                        ValueInstantiator valueInst,
                                        com.fasterxml.jackson.core.JsonParser p,
                                        String msg,
                                        Object... msgArgs)
                                 throws IOException
```
    Method that deserializers should call if they fail to instantiate value due to lack of viable instantiator (usually creator, that is, constructor or static factory method). Method should be called at point where value has not been decoded, so that handler has a chance to handle decoding using alternate mechanism, and handle underlying content (possibly by just skipping it) to keep input state valid
    
    Parameters:
    
    instClass - Type that was to be instantiated
    
    valueInst - (optional) Value instantiator to be used, if any; null if type does not use one for instantiation (custom deserialiers don't; standard POJO deserializer does)
    
    p - Parser that points to the JSON value to decode
    
    Returns:
    
    Object that should be constructed, if any; has to be of type instClass
    
    Throws:
    
    IOException
    
    Since:
    
    2.9 (2.8 had alternate that did not take ValueInstantiator)
  - handleInstantiationProblem
```
public Object handleInstantiationProblem(Class<?> instClass,
                                         Object argument,
                                         Throwable t)
                                  throws IOException
```
    Method that deserializers should call if they fail to instantiate value due to an exception that was thrown by constructor (or other mechanism used to create instances). Default implementation will try to call DeserializationProblemHandler.handleInstantiationProblem(com.fasterxml.jackson.databind.DeserializationContext, java.lang.Class<?>, java.lang.Object, java.lang.Throwable) on configured handlers, if any, to allow for recovery; if recovery does not succeed, will throw exception constructed with instantiationException(java.lang.Class<?>, java.lang.Throwable).
    
    Parameters:
    
    instClass - Type that was to be instantiated
    
    argument - (optional) Argument that was passed to constructor or equivalent instantiator; often a String.
    
    t - Exception that caused failure
    
    Returns:
    
    Object that should be constructed, if any; has to be of type instClass
    
    Throws:
    
    IOException
    
    Since:
    
    2.8
  - handleUnexpectedToken
```
public Object handleUnexpectedToken(Class<?> instClass,
                                    com.fasterxml.jackson.core.JsonParser p)
                             throws IOException
```
    Method that deserializers should call if the first token of the value to deserialize is of unexpected type (that is, type of token that deserializer cannot handle). This could occur, for example, if a Number deserializer encounter JsonToken.START_ARRAY instead of JsonToken.VALUE_NUMBER_INT or JsonToken.VALUE_NUMBER_FLOAT.
    
    Parameters:
    
    instClass - Type that was to be instantiated
    
    p - Parser that points to the JSON value to decode
    
    Returns:
    
    Object that should be constructed, if any; has to be of type instClass
    
    Throws:
    
    IOException
    
    Since:
    
    2.8
  - handleUnexpectedToken
```
public Object handleUnexpectedToken(Class<?> instClass,
                                    com.fasterxml.jackson.core.JsonToken t,
                                    com.fasterxml.jackson.core.JsonParser p,
                                    String msg,
                                    Object... msgArgs)
                             throws IOException
```
    Method that deserializers should call if the first token of the value to deserialize is of unexpected type (that is, type of token that deserializer cannot handle). This could occur, for example, if a Number deserializer encounter JsonToken.START_ARRAY instead of JsonToken.VALUE_NUMBER_INT or JsonToken.VALUE_NUMBER_FLOAT.
    
    Parameters:
    
    instClass - Type that was to be instantiated
    
    t - Token encountered that does match expected
    
    p - Parser that points to the JSON value to decode
    
    Returns:
    
    Object that should be constructed, if any; has to be of type instClass
    
    Throws:
    
    IOException
    
    Since:
    
    2.8
  - handleUnexpectedToken
```
public Object handleUnexpectedToken(JavaType targetType,
                                    com.fasterxml.jackson.core.JsonParser p)
                             throws IOException
```
    Method that deserializers should call if the first token of the value to deserialize is of unexpected type (that is, type of token that deserializer cannot handle). This could occur, for example, if a Number deserializer encounter JsonToken.START_ARRAY instead of JsonToken.VALUE_NUMBER_INT or JsonToken.VALUE_NUMBER_FLOAT.
    
    Parameters:
    
    targetType - Type that was to be instantiated
    
    p - Parser that points to the JSON value to decode
    
    Returns:
    
    Object that should be constructed, if any; has to be of type instClass
    
    Throws:
    
    IOException
    
    Since:
    
    2.10
  - handleUnexpectedToken
```
public Object handleUnexpectedToken(JavaType targetType,
                                    com.fasterxml.jackson.core.JsonToken t,
                                    com.fasterxml.jackson.core.JsonParser p,
                                    String msg,
                                    Object... msgArgs)
                             throws IOException
```
    Method that deserializers should call if the first token of the value to deserialize is of unexpected type (that is, type of token that deserializer cannot handle). This could occur, for example, if a Number deserializer encounter JsonToken.START_ARRAY instead of JsonToken.VALUE_NUMBER_INT or JsonToken.VALUE_NUMBER_FLOAT.
    
    Parameters:
    
    targetType - Type that was to be instantiated
    
    t - Token encountered that does not match expected
    
    p - Parser that points to the JSON value to decode
    
    Returns:
    
    Object that should be constructed, if any; has to be of type instClass
    
    Throws:
    
    IOException
    
    Since:
    
    2.10
  - handleUnknownTypeId
```
public JavaType handleUnknownTypeId(JavaType baseType,
                                    String id,
                                    TypeIdResolver idResolver,
                                    String extraDesc)
                             throws IOException
```
    Method that deserializers should call if they encounter a type id (for polymorphic deserialization) that cannot be resolved to an actual type; usually since there is no mapping defined. Default implementation will try to call DeserializationProblemHandler.handleUnknownTypeId(com.fasterxml.jackson.databind.DeserializationContext, com.fasterxml.jackson.databind.JavaType, java.lang.String, com.fasterxml.jackson.databind.jsontype.TypeIdResolver, java.lang.String) on configured handlers, if any, to allow for recovery; if recovery does not succeed, will throw exception constructed with invalidTypeIdException(com.fasterxml.jackson.databind.JavaType, java.lang.String, java.lang.String).
    
    Parameters:
    
    baseType - Base type from which resolution starts
    
    id - Type id that could not be converted
    
    extraDesc - Additional problem description to add to default exception message, if resolution fails.
    
    Returns:
    
    JavaType that id resolves to
    
    Throws:
    
    IOException - To indicate unrecoverable problem, if resolution cannot be made to work
    
    Since:
    
    2.8
  - handleMissingTypeId
```
public JavaType handleMissingTypeId(JavaType baseType,
                                    TypeIdResolver idResolver,
                                    String extraDesc)
                             throws IOException
```
    Throws:
    
    IOException
    
    Since:
    
    2.9
  - handleBadMerge
```
public void handleBadMerge(JsonDeserializer<?> deser)
                    throws JsonMappingException
```
    Method that deserializer may call if it is called to do an update ("merge") but deserializer operates on a non-mergeable type. Although this should usually be caught earlier, sometimes it may only be caught during operation and if so this is the method to call. Note that if MapperFeature.IGNORE_MERGE_FOR_UNMERGEABLE is enabled, this method will simply return null; otherwise InvalidDefinitionException will be thrown.
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.10
  - _isCompatible
```
protected boolean _isCompatible(Class<?> target,
                                Object value)
```
    Since:
    
    2.9.2
  - reportWrongTokenException
```
public void reportWrongTokenException(JsonDeserializer<?> deser,
                                      com.fasterxml.jackson.core.JsonToken expToken,
                                      String msg,
                                      Object... msgArgs)
                               throws JsonMappingException
```
    Method for deserializers to call when the token encountered was of type different than what should be seen at that position, usually within a sequence of expected tokens. Note that this method will throw a JsonMappingException and no recovery is attempted (via DeserializationProblemHandler, as problem is considered to be difficult to recover from, in general.
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.9
  - reportWrongTokenException
```
public void reportWrongTokenException(JavaType targetType,
                                      com.fasterxml.jackson.core.JsonToken expToken,
                                      String msg,
                                      Object... msgArgs)
                               throws JsonMappingException
```
    Method for deserializers to call when the token encountered was of type different than what should be seen at that position, usually within a sequence of expected tokens. Note that this method will throw a JsonMappingException and no recovery is attempted (via DeserializationProblemHandler, as problem is considered to be difficult to recover from, in general.
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.9
  - reportWrongTokenException
```
public void reportWrongTokenException(Class<?> targetType,
                                      com.fasterxml.jackson.core.JsonToken expToken,
                                      String msg,
                                      Object... msgArgs)
                               throws JsonMappingException
```
    Method for deserializers to call when the token encountered was of type different than what should be seen at that position, usually within a sequence of expected tokens. Note that this method will throw a JsonMappingException and no recovery is attempted (via DeserializationProblemHandler, as problem is considered to be difficult to recover from, in general.
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.9
  - reportUnresolvedObjectId
```
public <T> T reportUnresolvedObjectId(ObjectIdReader oidReader,
                                      Object bean)
                               throws JsonMappingException
```
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.8
  - reportInputMismatch
```
public <T> T reportInputMismatch(JsonDeserializer<?> src,
                                 String msg,
                                 Object... msgArgs)
                          throws JsonMappingException
```
    Helper method used to indicate a problem with input in cases where more specific reportXxx() method was not available.
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.9
  - reportInputMismatch
```
public <T> T reportInputMismatch(Class<?> targetType,
                                 String msg,
                                 Object... msgArgs)
                          throws JsonMappingException
```
    Helper method used to indicate a problem with input in cases where more specific reportXxx() method was not available.
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.9
  - reportInputMismatch
```
public <T> T reportInputMismatch(JavaType targetType,
                                 String msg,
                                 Object... msgArgs)
                          throws JsonMappingException
```
    Helper method used to indicate a problem with input in cases where more specific reportXxx() method was not available.
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.9
  - reportInputMismatch
```
public <T> T reportInputMismatch(BeanProperty prop,
                                 String msg,
                                 Object... msgArgs)
                          throws JsonMappingException
```
    Helper method used to indicate a problem with input in cases where more specific reportXxx() method was not available.
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.9
  - reportPropertyInputMismatch
```
public <T> T reportPropertyInputMismatch(Class<?> targetType,
                                         String propertyName,
                                         String msg,
                                         Object... msgArgs)
                                  throws JsonMappingException
```
    Helper method used to indicate a problem with input in cases where more specific reportXxx() method was not available.
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.10
  - reportPropertyInputMismatch
```
public <T> T reportPropertyInputMismatch(JavaType targetType,
                                         String propertyName,
                                         String msg,
                                         Object... msgArgs)
                                  throws JsonMappingException
```
    Helper method used to indicate a problem with input in cases where more specific reportXxx() method was not available.
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.10
  - reportBadCoercion
```
public <T> T reportBadCoercion(JsonDeserializer<?> src,
                               Class<?> targetType,
                               Object inputValue,
                               String msg,
                               Object... msgArgs)
                        throws JsonMappingException
```
    Helper method used to indicate a problem with input in cases where specific input coercion was not allowed.
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.12
  - reportTrailingTokens
```
public <T> T reportTrailingTokens(Class<?> targetType,
                                  com.fasterxml.jackson.core.JsonParser p,
                                  com.fasterxml.jackson.core.JsonToken trailingToken)
                           throws JsonMappingException
```
    Throws:
    
    JsonMappingException
  - reportWrongTokenException
```
@Deprecated
public void reportWrongTokenException(com.fasterxml.jackson.core.JsonParser p,
                                                  com.fasterxml.jackson.core.JsonToken expToken,
                                                  String msg,
                                                  Object... msgArgs)
                                           throws JsonMappingException
```
    Deprecated.
    
    Throws:
    
    JsonMappingException
  - reportUnknownProperty
```
@Deprecated
public void reportUnknownProperty(Object instanceOrClass,
                                              String fieldName,
                                              JsonDeserializer<?> deser)
                                       throws JsonMappingException
```
    Deprecated. Since 2.8 call handleUnknownProperty(com.fasterxml.jackson.core.JsonParser, com.fasterxml.jackson.databind.JsonDeserializer<?>, java.lang.Object, java.lang.String) instead
    
    Helper method for reporting a problem with unhandled unknown property.
    
    Parameters:
    
    instanceOrClass - Either value being populated (if one has been instantiated), or Class that indicates type that would be (or have been) instantiated
    
    deser - Deserializer that had the problem, if called by deserializer (or on behalf of one)
    
    Throws:
    
    JsonMappingException
  - reportMissingContent
```
@Deprecated
public void reportMissingContent(String msg,
                                             Object... msgArgs)
                                      throws JsonMappingException
```
    Deprecated. Since 2.9: not clear this ever occurs
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.8
  - reportBadTypeDefinition
```
public <T> T reportBadTypeDefinition(BeanDescription bean,
                                     String msg,
                                     Object... msgArgs)
                              throws JsonMappingException
```
    Helper method called to indicate problem in POJO (serialization) definitions or settings regarding specific Java type, unrelated to actual JSON content to map. Default behavior is to construct and throw a JsonMappingException.
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.9
  - reportBadPropertyDefinition
```
public <T> T reportBadPropertyDefinition(BeanDescription bean,
                                         BeanPropertyDefinition prop,
                                         String msg,
                                         Object... msgArgs)
                                  throws JsonMappingException
```
    Helper method called to indicate problem in POJO (serialization) definitions or settings regarding specific property (of a type), unrelated to actual JSON content to map. Default behavior is to construct and throw a JsonMappingException.
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.9
  - reportBadDefinition
```
public <T> T reportBadDefinition(JavaType type,
                                 String msg)
                          throws JsonMappingException
```
    Description copied from class: DatabindContext
    
    Helper method called to indicate a generic problem that stems from type definition(s), not input data, or input/output state; typically this means throwing a InvalidDefinitionException.
    
    Specified by:
    
    reportBadDefinition in class DatabindContext
    
    Throws:
    
    JsonMappingException
  - reportBadMerge
```
@Deprecated
public <T> T reportBadMerge(JsonDeserializer<?> deser)
                                 throws JsonMappingException
```
    Deprecated. Since 2.10 use handleBadMerge(com.fasterxml.jackson.databind.JsonDeserializer<?>) instead
    
    Throws:
    
    JsonMappingException
  - wrongTokenException
```
public JsonMappingException wrongTokenException(com.fasterxml.jackson.core.JsonParser p,
                                                JavaType targetType,
                                                com.fasterxml.jackson.core.JsonToken expToken,
                                                String extra)
```
    Helper method for constructing JsonMappingException to indicate that the token encountered was of type different than what should be seen at that position, usually within a sequence of expected tokens. Note that most of the time this method should NOT be directly called; instead, reportWrongTokenException(com.fasterxml.jackson.databind.JsonDeserializer<?>, com.fasterxml.jackson.core.JsonToken, java.lang.String, java.lang.Object...) should be called and will call this method as necessary.
    
    Since:
    
    2.9
  - wrongTokenException
```
public JsonMappingException wrongTokenException(com.fasterxml.jackson.core.JsonParser p,
                                                Class<?> targetType,
                                                com.fasterxml.jackson.core.JsonToken expToken,
                                                String extra)
```
  - wrongTokenException
```
@Deprecated
public JsonMappingException wrongTokenException(com.fasterxml.jackson.core.JsonParser p,
                                                            com.fasterxml.jackson.core.JsonToken expToken,
                                                            String msg)
```
    Deprecated.
  - weirdKeyException
```
public JsonMappingException weirdKeyException(Class<?> keyClass,
                                              String keyValue,
                                              String msg)
```
    Helper method for constructing exception to indicate that given JSON Object field name was not in format to be able to deserialize specified key type. Note that most of the time this method should NOT be called; instead, handleWeirdKey(java.lang.Class<?>, java.lang.String, java.lang.String, java.lang.Object...) should be called which will call this method if necessary.
  - weirdStringException
```
public JsonMappingException weirdStringException(String value,
                                                 Class<?> instClass,
                                                 String msgBase)
```
    Helper method for constructing exception to indicate that input JSON String was not suitable for deserializing into given target type. Note that most of the time this method should NOT be called; instead, handleWeirdStringValue(java.lang.Class<?>, java.lang.String, java.lang.String, java.lang.Object...) should be called which will call this method if necessary.
    
    Parameters:
    
    value - String value from input being deserialized
    
    instClass - Type that String should be deserialized into
    
    msgBase - Message that describes specific problem
    
    Since:
    
    2.1
  - weirdNumberException
```
public JsonMappingException weirdNumberException(Number value,
                                                 Class<?> instClass,
                                                 String msg)
```
    Helper method for constructing exception to indicate that input JSON Number was not suitable for deserializing into given target type. Note that most of the time this method should NOT be called; instead, handleWeirdNumberValue(java.lang.Class<?>, java.lang.Number, java.lang.String, java.lang.Object...) should be called which will call this method if necessary.
  - weirdNativeValueException
```
public JsonMappingException weirdNativeValueException(Object value,
                                                      Class<?> instClass)
```
    Helper method for constructing exception to indicate that input JSON token of type "native value" (see JsonToken.VALUE_EMBEDDED_OBJECT) is of incompatible type (and there is no delegating creator or such to use) and can not be used to construct value of specified type (usually POJO). Note that most of the time this method should NOT be called; instead, handleWeirdNativeValue(com.fasterxml.jackson.databind.JavaType, java.lang.Object, com.fasterxml.jackson.core.JsonParser) should be called which will call this method
    
    Since:
    
    2.9
  - instantiationException
```
public JsonMappingException instantiationException(Class<?> instClass,
                                                   Throwable cause)
```
    Helper method for constructing instantiation exception for specified type, to indicate problem with physically constructing instance of specified class (missing constructor, exception from constructor)
    Note that most of the time this method should NOT be called directly; instead, handleInstantiationProblem(java.lang.Class<?>, java.lang.Object, java.lang.Throwable) should be called which will call this method if necessary.
  - instantiationException
```
public JsonMappingException instantiationException(Class<?> instClass,
                                                   String msg0)
```
    Helper method for constructing instantiation exception for specified type, to indicate that instantiation failed due to missing instantiator (creator; constructor or factory method).
    Note that most of the time this method should NOT be called; instead, handleMissingInstantiator(java.lang.Class<?>, com.fasterxml.jackson.databind.deser.ValueInstantiator, com.fasterxml.jackson.core.JsonParser, java.lang.String, java.lang.Object...) should be called which will call this method if necessary.
  - invalidTypeIdException
```
public JsonMappingException invalidTypeIdException(JavaType baseType,
                                                   String typeId,
                                                   String extraDesc)
```
    Description copied from class: DatabindContext
    
    Helper method for constructing exception to indicate that given type id could not be resolved to a valid subtype of specified base type. Most commonly called during polymorphic deserialization.
    Note that most of the time this method should NOT be called directly: instead, method handleUnknownTypeId() should be called which will call this method if necessary.
    
    Specified by:
    
    invalidTypeIdException in class DatabindContext
  - missingTypeIdException
```
public JsonMappingException missingTypeIdException(JavaType baseType,
                                                   String extraDesc)
```
    Since:
    
    2.9
  - unknownTypeException
```
@Deprecated
public JsonMappingException unknownTypeException(JavaType type,
                                                             String id,
                                                             String extraDesc)
```
    Deprecated. Since 2.8 use handleUnknownTypeId(com.fasterxml.jackson.databind.JavaType, java.lang.String, com.fasterxml.jackson.databind.jsontype.TypeIdResolver, java.lang.String) instead
    
    Since:
    
    2.5
  - endOfInputException
```
@Deprecated
public JsonMappingException endOfInputException(Class<?> instClass)
```
    Deprecated. Since 2.8; currently no way to catch EOF at databind level
    
    Helper method for constructing exception to indicate that end-of-input was reached while still expecting more tokens to deserialize value of specified type.
  - reportMappingException
```
@Deprecated
public void reportMappingException(String msg,
                                               Object... msgArgs)
                                        throws JsonMappingException
```
    Deprecated. Since 2.9: use a more specific method, or reportBadDefinition(JavaType, String), or reportInputMismatch(com.fasterxml.jackson.databind.JsonDeserializer<?>, java.lang.String, java.lang.Object...) instead
    
    Fallback method that may be called if no other reportXxx is applicable -- but only in that case.
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.8
  - mappingException
```
@Deprecated
public JsonMappingException mappingException(String message)
```
    Deprecated. Since 2.9 use more specific error reporting methods instead
    
    Helper method for constructing generic mapping exception with specified message and current location information. Note that application code should almost always call one of handleXxx methods, or reportMappingException(String, Object...) instead.
    
    Since:
    
    2.6
  - mappingException
```
@Deprecated
public JsonMappingException mappingException(String msg,
                                                         Object... msgArgs)
```
    Deprecated. Since 2.9 use more specific error reporting methods instead
    
    Helper method for constructing generic mapping exception with specified message and current location information Note that application code should almost always call one of handleXxx methods, or reportMappingException(String, Object...) instead.
    
    Since:
    
    2.6
  - mappingException
```
@Deprecated
public JsonMappingException mappingException(Class<?> targetClass)
```
    Deprecated. Since 2.8 use handleUnexpectedToken(Class, JsonParser) instead
    
    Helper method for constructing generic mapping exception for specified type
  - mappingException
```
@Deprecated
public JsonMappingException mappingException(Class<?> targetClass,
                                                         com.fasterxml.jackson.core.JsonToken token)
```
    Deprecated. Since 2.8 use handleUnexpectedToken(Class, JsonParser) instead
  - getDateFormat
```
@Deprecated
protected DateFormat getDateFormat()
```
    Deprecated.
  - _getDateFormat
```
protected DateFormat _getDateFormat()
```
  - _shapeForToken
```
protected String _shapeForToken(com.fasterxml.jackson.core.JsonToken t)
```
    Helper method for constructing description like "Object value" given JsonToken encountered.

Class DeserializationContext

Field Summary

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Field Detail

_cache

_factory

_config

_featureFlags

_readCapabilities

_view

_parser

_injectableValues

_arrayBuilders

_objectBuffer

_dateFormat

_attributes

_currentType

Constructor Detail

DeserializationContext

DeserializationContext

DeserializationContext

DeserializationContext

DeserializationContext

DeserializationContext

Method Detail

getConfig

getActiveView

canOverrideAccessModifiers

isEnabled

isEnabled

getDefaultPropertyFormat

getAnnotationIntrospector

getTypeFactory

constructSpecializedType

getLocale

getTimeZone

getAttribute

setAttribute

getContextualType

getFactory

isEnabled

isEnabled

getDeserializationFeatures

hasDeserializationFeatures

hasSomeOfFeatures

getParser

findInjectableValue

getBase64Variant

getNodeFactory

findCoercionAction

findCoercionFromBlankString

bufferForInputBuffering

bufferForInputBuffering

bufferAsCopyOfValue

hasValueDeserializerFor

findContextualValueDeserializer

findNonContextualValueDeserializer

findRootValueDeserializer

findKeyDeserializer

findObjectId

checkUnresolvedObjectId

constructType

findClass

leaseObjectBuffer

returnObjectBuffer

getArrayBuilders

deserializerInstance

keyDeserializerInstance

handlePrimaryContextualization

handleSecondaryContextualization

parseDate

constructCalendar

extractScalarFromObject

readValue

readValue

readPropertyValue

readPropertyValue