Package com.fasterxml.jackson.annotation

Public core annotations, most of which are used to configure how Data Mapping/Binding works.

See: Description

  • Interface Summary 
    Interface Description
    JacksonAnnotationValue<A extends Annotation>
    Marker interface used by value classes like JsonFormat.Value that are used to contain information from one of Jackson annotations, and can be directly instantiated from those annotations, as well as programmatically constructed and possibly merged.
    ObjectIdResolver
    Definition of API used for resolving actual Java object from Object Identifiers (as annotated using JsonIdentityInfo).
  • Class Summary 
    Class Description
    JacksonInject.Value
    Helper class used to contain information from a single JacksonInject annotation, as well as to provide possible overrides from non-annotation sources.
    JsonAutoDetect.Value
    Helper class used to contain information from a single JsonIgnoreProperties annotation, as well as to provide possible overrides from non-annotation sources.
    JsonFormat.Features
    Helper class that encapsulates information equivalent to Boolean valued EnumMap.
    JsonFormat.Value
    Helper class used to contain information from a single JsonFormat annotation.
    JsonIgnoreProperties.Value
    Helper class used to contain information from a single JsonIgnoreProperties annotation, as well as to provide possible overrides from non-annotation sources.
    JsonInclude.Value
    Helper class used to contain information from a single JsonInclude annotation.
    JsonIncludeProperties.Value
    Helper class used to contain information from a single JsonIncludeProperties annotation, as well as to provide possible overrides from non-annotation sources.
    JsonSetter.Value
    Helper class used to contain information from a single JsonSetter annotation, as well as to provide possible overrides from non-annotation sources.
    JsonTypeInfo.None Deprecated
    Since 2.5, use any Annotation type (such as JsonTypeInfo), if such behavior is needed; this is rarely necessary.
    JsonTypeInfo.Value  
    ObjectIdGenerator<T>
    Definition of API used for constructing Object Identifiers (as annotated using JsonIdentityInfo).
    ObjectIdGenerator.IdKey
    Simple key class that can be used as a key for ObjectId-to-POJO mappings, when multiple ObjectId types and scopes are used.
    ObjectIdGenerators
    ObjectIdGenerators.IntSequenceGenerator
    Simple sequence-number based generator, which uses basic Java ints (starting with value 1) as Object Identifiers.
    ObjectIdGenerators.None
    Abstract marker class used to allow explicitly specifying that no generator is used; which also implies that no Object Id is to be included or used.
    ObjectIdGenerators.PropertyGenerator
    Abstract place-holder class which is used to denote case where Object Identifier to use comes from a POJO property (getter method or field).
    ObjectIdGenerators.StringIdGenerator
    Implementation that will accept arbitrary (but unique) String Ids on deserialization, and (by default) use random UUID generation similar to ObjectIdGenerators.UUIDGenerator for generation ids.
    ObjectIdGenerators.UUIDGenerator
    Implementation that just uses UUIDs as reliably unique identifiers: downside is that resulting String is 36 characters long.
    SimpleObjectIdResolver
    Simple implementation of ObjectIdResolver
  • Enum Summary 
    Enum Description
    JsonAutoDetect.Visibility
    Enumeration for possible visibility thresholds (minimum visibility) that can be used to limit which methods (and fields) are auto-detected.
    JsonCreator.Mode  
    JsonFormat.Feature
    Set of features that can be enabled/disabled for property annotated.
    JsonFormat.Shape
    Value enumeration used for indicating preferred Shape; translates loosely to JSON types, with some extra values to indicate less precise choices (i.e.
    JsonInclude.Include
    Enumeration used with JsonInclude to define which properties of Java Beans are to be included in serialization.
    JsonProperty.Access
    Various options for JsonProperty.access() property, specifying how property may be accessed during serialization ("read") and deserialization ("write") (note that the direction of read and write is from perspective of the property, not from external data format: this may be confusing in some contexts).
    JsonTypeInfo.As
    Definition of standard type inclusion mechanisms for type metadata.
    JsonTypeInfo.Id
    Definition of different type identifiers that can be included in JSON during serialization, and used for deserialization.
    Nulls
    Enumeration used with JsonSetter (for properties `nulls` and `contentNulls`) to define how explicit `null` values from input (if input format has the concept; JSON, for example does) are handled.
    OptBoolean
    Optional Boolean value ("nullean").
    PropertyAccessor
    Enumeration used to define kinds of elements (called "property accessors") that annotations like JsonAutoDetect apply to.
  • Annotation Types Summary 
    Annotation Type Description
    JacksonAnnotation
    Meta-annotation (annotations used on other annotations) used for marking all annotations that are part of Jackson package.
    JacksonAnnotationsInside
    Meta-annotation (annotations used on other annotations) used for indicating that instead of using target annotation (annotation annotated with this annotation), Jackson should use meta-annotations it has.
    JacksonInject
    Jackson-specific annotation used for indicating that value of annotated property will be "injected", i.e.
    JsonAlias
    Annotation that can be used to define one or more alternative names for a property, accepted during deserialization as alternative to the official name.
    JsonAnyGetter
    Marker annotation that can be used to define a non-static, no-argument method to be an "any getter"; accessor for getting a set of key/value pairs, to be serialized as part of containing POJO (similar to unwrapping) along with regular property values it has.
    JsonAnySetter
    Marker annotation that can be used to define a logical "any setter" mutator -- either using non-static two-argument method (first argument name of property, second value to set) or a field (of type Map or POJO) - to be used as a "fallback" handler for all otherwise unrecognized properties found from JSON content.
    JsonAutoDetect
    Class annotation that can be used to define which kinds of Methods are to be detected by auto-detection, and with what minimum access level.
    JsonBackReference
    Annotation used to indicate that associated property is part of two-way linkage between fields; and that its role is "child" (or "back") link.
    JsonClassDescription
    Annotation used to define a human-readable description for annotated type (class).
    JsonCreator
    Marker annotation that can be used to define constructors and factory methods as one to use for instantiating new instances of the associated class.
    JsonEnumDefaultValue
    Marker annotation that can be used to define a default value used when trying to deserialize unknown Enum values.
    JsonFilter
    Annotation used to indicate which logical filter is to be used for filtering out properties of type (class) annotated; association made by this annotation declaring ids of filters, and com.fasterxml.jackson.databind.ObjectMapper (or objects it delegates to) providing matching filters by id.
    JsonFormat
    General-purpose annotation used for configuring details of how values of properties are to be serialized.
    JsonGetter
    Marker annotation that can be used to define a non-static, no-argument value-returning (non-void) method to be used as a "getter" for a logical property.
    JsonIdentityInfo
    Annotation used for indicating that values of annotated type or property should be serializing so that instances either contain additional object identifier (in addition actual object properties), or as a reference that consists of an object id that refers to a full serialization.
    JsonIdentityReference
    Optional annotation that can be used for customizing details of a reference to Objects for which "Object Identity" is enabled (see JsonIdentityInfo).
    JsonIgnore
    Marker annotation that indicates that the logical property that the accessor (field, getter/setter method or Creator parameter [of JsonCreator-annotated constructor or factory method]) is to be ignored by introspection-based serialization and deserialization functionality.
    JsonIgnoreProperties
    Annotation that can be used to either suppress serialization of properties (during serialization), or ignore processing of JSON properties read (during deserialization).
    JsonIgnoreType
    Marker annotation that indicates that all properties that have type annotated with this annotation are to be ignored during serialization and deserialization.
    JsonInclude
    Annotation used to indicate when value of the annotated property (when used for a field, method or constructor parameter), or all properties of the annotated class, is to be serialized.
    JsonIncludeProperties
    Annotation that can be used to either only include serialization of properties (during serialization), or only include processing of JSON properties read (during deserialization).
    JsonKey
    Marker annotation that indicates that the value of annotated accessor (either field or "getter" method [a method with non-void return type, no args]) is to be used as the single value to serialize for the instance.
    JsonManagedReference
    Annotation used to indicate that annotated property is part of two-way linkage between fields; and that its role is "parent" (or "forward") link.
    JsonMerge
    Annotation to specify whether annotated property value should use "merging" approach: merging meaning that the current value is first accessed (with a getter or field) and then modified with incoming data.
    JsonProperty
    Marker annotation that can be used to define a non-static method as a "setter" or "getter" for a logical property accessor (depending on its signature), or a non-static Object field to be used (serialized, deserialized) as a logical property (to assign value or get value from)
    JsonPropertyDescription
    Annotation used to define a human-readable description for a logical property.
    JsonPropertyOrder
    Annotation that can be used to define ordering (possibly partial) to use when serializing object properties.
    JsonRawValue
    Marker annotation that indicates that the annotated method or field should be serialized by including literal String value of the property as is, without quoting of characters.
    JsonRootName
    Annotation similar to javax.xml.bind.annotation.XmlRootElement, used to indicate name to use for root-level wrapping, if wrapping is enabled.
    JsonSetter
    Annotation that can be used to define a non-static, single-argument method to be used as a "setter" for a logical property as an alternative to recommended JsonProperty annotation; or (as of 2.9 and later), specify additional aspects of the assigning property a value during serialization.
    JsonSubTypes
    Annotation used with JsonTypeInfo to indicate subtypes of serializable polymorphic types, and to associate logical names used within JSON content (which is more portable than using physical Java class names).
    JsonSubTypes.Type
    Definition of a subtype, along with optional name(s).
    JsonTypeId
    Marker annotation that can be used on a property accessor (field, getter or setter, constructor parameter) to indicate that the property is to contain type id to use when including polymorphic type information.
    JsonTypeInfo
    Annotation used for configuring details of if and how type information is used with JSON serialization and deserialization, to preserve information about actual class of Object instances.
    JsonTypeName
    Annotation used for binding logical name that the annotated class has.
    JsonUnwrapped
    Annotation used to indicate that a POJO-valued property should be serialized "unwrapped" -- that is, if it would be serialized as Object value, its properties are instead included as properties of its containing Object -- and deserialized reproducing "missing" structure.
    JsonValue
    Marker annotation that indicates that the value of annotated accessor (either field or "getter" method [a method with non-void return type, no args]) is to be used as the single value to serialize for the instance, instead of the usual method of collecting properties of value.
    JsonView
    Annotation used for indicating view(s) that the property that is defined by method or field annotated is part of.

Package com.fasterxml.jackson.annotation Description

Public core annotations, most of which are used to configure how Data Mapping/Binding works. Annotations in this package can only have dependencies to non-annotation classes in Core package; annotations that have dependencies to Mapper classes are included in Mapper module (under org.codehaus.jackson.map.annotate). Also contains parameter types (mostly enums) needed by annotations.

Note that prior versions (1.x) contained these annotations within 'core' jar, as part of Streaming API.

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