com.fasterxml.jackson.databind

Interface BeanProperty

All Superinterfaces:

Named

All Known Implementing Classes:

AttributePropertyWriter, BeanProperty.Bogus, BeanProperty.Std, BeanPropertyWriter, ConcreteBeanPropertyBase, CreatorProperty, FieldProperty, InnerClassProperty, ManagedReferenceProperty, MapProperty, MergingSettableBeanProperty, MethodProperty, ObjectIdReferenceProperty, ObjectIdValueProperty, PropertyWriter, SettableBeanProperty, SettableBeanProperty.Delegating, SetterlessProperty, UnwrappingBeanPropertyWriter, ValueInjector, VirtualBeanPropertyWriter

public interface BeanProperty
extends Named

Bean properties are logical entities that represent data that Java objects (POJOs (Plain Old Java Objects), sometimes also called "beans") contain; and that are accessed using accessors (methods like getters and setters, fields, constructor parameters). Instances allow access to annotations directly associated to property (via field or method), as well as contextual annotations (annotations for class that contains properties).

Instances are not typically passed when constructing serializers and deserializers, but rather only passed when context is known when ContextualSerializer and ContextualDeserializer resolution occurs (createContextual(...) method is called). References may (need to) be retained by serializers and deserializers, especially when further resolving dependent handlers like value serializers/deserializers or structured types.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	BeanProperty.Bogus Alternative "Null" implementation that can be used in cases where a non-null BeanProperty is needed
static class	BeanProperty.Std Simple stand-alone implementation, useful as a placeholder or base class for more complex implementations.

Field Summary

Fields

Modifier and Type	Field and Description
static JsonFormat.Value	EMPTY_FORMAT
static JsonInclude.Value	EMPTY_INCLUDE

Method Summary

Methods

Modifier and Type	Method and Description
void	depositSchemaProperty(JsonObjectFormatVisitor objectVisitor, SerializerProvider provider) Method that can be called to visit the type structure that this property is part of.
List<PropertyName>	findAliases(MapperConfig<?> config) Method for accessing set of possible alternate names that are accepted during deserialization.
JsonFormat.Value	findFormatOverrides(AnnotationIntrospector intr) Deprecated. since 2.8 use findPropertyFormat(com.fasterxml.jackson.databind.cfg.MapperConfig<?>, java.lang.Class<?>) instead.
JsonFormat.Value	findPropertyFormat(MapperConfig<?> config, Class<?> baseType) Helper method used to look up format settings applicable to this property, considering both possible per-type configuration settings
JsonInclude.Value	findPropertyInclusion(MapperConfig<?> config, Class<?> baseType) Convenience method that is roughly equivalent to
<A extends Annotation> A	getAnnotation(Class<A> acls) Method for finding annotation associated with this property; meaning annotation associated with one of entities used to access property.
<A extends Annotation> A	getContextAnnotation(Class<A> acls) Method for finding annotation associated with context of this property; usually class in which member is declared (or its subtype if processing subtype).
PropertyName	getFullName() Method for getting full name definition, including possible format-specific additional properties (such as namespace when using XML backend).
AnnotatedMember	getMember() Method for accessing primary physical entity that represents the property; annotated field, method or constructor property.
PropertyMetadata	getMetadata() Accessor for additional optional information about property.
String	getName() Method to get logical name of the property
JavaType	getType() Method to get declared type of the property.
PropertyName	getWrapperName() If property is indicated to be wrapped, name of wrapper element to use.
boolean	isRequired() Whether value for property is marked as required using annotations or associated schema.
boolean	isVirtual() Accessor for checking whether there is an actual physical property behind this property abstraction or not.

Field Detail

EMPTY_FORMAT

static final JsonFormat.Value EMPTY_FORMAT

EMPTY_INCLUDE

static final JsonInclude.Value EMPTY_INCLUDE

Method Detail

getName

String getName()

Method to get logical name of the property

Specified by:

getName in interface Named

getFullName

PropertyName getFullName()

Method for getting full name definition, including possible format-specific additional properties (such as namespace when using XML backend).

Since:

2.3

getType

JavaType getType()

Method to get declared type of the property.

getWrapperName

PropertyName getWrapperName()

If property is indicated to be wrapped, name of wrapper element to use.

Since:

2.2

getMetadata

PropertyMetadata getMetadata()

Accessor for additional optional information about property.

Returns:

Metadata about property; never null.

Since:

2.3

isRequired

boolean isRequired()

Whether value for property is marked as required using annotations or associated schema. Equivalent to: getMetadata().isRequired()

Since:

2.2

isVirtual

boolean isVirtual()

Accessor for checking whether there is an actual physical property behind this property abstraction or not.

Since:

2.7

getAnnotation

<A extends Annotation> A getAnnotation(Class<A> acls)

Method for finding annotation associated with this property; meaning annotation associated with one of entities used to access property.

Note that this method should only be called for custom annotations; access to standard Jackson annotations (or ones supported by alternate AnnotationIntrospectors) should be accessed through AnnotationIntrospector.

getContextAnnotation

<A extends Annotation> A getContextAnnotation(Class<A> acls)

Method for finding annotation associated with context of this property; usually class in which member is declared (or its subtype if processing subtype).

Note that this method should only be called for custom annotations; access to standard Jackson annotations (or ones supported by alternate AnnotationIntrospectors) should be accessed through AnnotationIntrospector.

getMember

AnnotatedMember getMember()

Method for accessing primary physical entity that represents the property; annotated field, method or constructor property.

findFormatOverrides

@Deprecated
JsonFormat.Value findFormatOverrides(AnnotationIntrospector intr)

Deprecated. since 2.8 use findPropertyFormat(com.fasterxml.jackson.databind.cfg.MapperConfig<?>, java.lang.Class<?>) instead.

Convenience method that is roughly equivalent to

   return intr.findFormat(getMember());

and specifically does NOT try to find per-type format defaults to merge; use findPropertyFormat(com.fasterxml.jackson.databind.cfg.MapperConfig<?>, java.lang.Class<?>) if such defaults would be useful.

Since:

2.6

findPropertyFormat

JsonFormat.Value findPropertyFormat(MapperConfig<?> config,
                                  Class<?> baseType)

Helper method used to look up format settings applicable to this property, considering both possible per-type configuration settings

Since:

2.7

findPropertyInclusion

JsonInclude.Value findPropertyInclusion(MapperConfig<?> config,
                                      Class<?> baseType)

Convenience method that is roughly equivalent to

   return config.getAnnotationIntrospector().findPropertyInclusion(getMember());

but also considers global default settings for inclusion

Since:

2.7

findAliases

List<PropertyName> findAliases(MapperConfig<?> config)

Method for accessing set of possible alternate names that are accepted during deserialization.

Returns:

List (possibly empty) of alternate names; never null

Since:

2.9

depositSchemaProperty

void depositSchemaProperty(JsonObjectFormatVisitor objectVisitor,
                         SerializerProvider provider)
                           throws JsonMappingException

Method that can be called to visit the type structure that this property is part of. Note that not all implementations support traversal with this method; those that do not should throw UnsupportedOperationException.

NOTE: Starting with 2.7, takes explicit SerializerProvider argument to reduce the need to rely on provider visitor may or may not have assigned.

Parameters:

objectVisitor - Visitor to used as the callback handler

Throws:

JsonMappingException

Since:

2.2 (although signature did change in 2.7)