Converts between objects with getter and setter methods and arrays.

The normalization process looks at all public methods and calls the ones
which have a name starting with get and take no parameters. The result is a
map from property names (method name stripped of the get prefix and converted
to lower case) to property values. Property values are normalized through the

The denormalization first looks at the constructor of the given class to see
if any of the parameters have the same name as one of the properties. The
constructor is then called with all parameters or an exception is thrown if
any required parameters were not present as properties. Then the denormalizer
walks through the given map of property names to property values to see if a
setter method exists for any of the properties. If a setter exists it is
called with the property value. No automatic denormalization of the value
takes place.

public Symfony\Component\Serializer\Normalizer\AbstractNormalizer::ALLOW_EXTRA_ATTRIBUTES = 'allow_extra_attributes'

If ATTRIBUTES are specified, and the source has fields that are not part of that list,
either ignore those attributes (true) or throw an ExtraAttributesException (false).

public Symfony\Component\Serializer\Normalizer\AbstractNormalizer::ATTRIBUTES = 'attributes'

Limit (de)normalize to the specified names.

For nested structures, this list needs to reflect the object tree.

public Symfony\Component\Serializer\Normalizer\AbstractNormalizer::CALLBACKS = 'callbacks'

Hashmap of field name => callable to (de)normalize this field.

The callable is called if the field is encountered with the arguments:

  • mixed $attributeValue value of this field
  • object|string $object the whole object being normalized or the object's class being denormalized
  • string $attributeName name of the attribute being (de)normalized
  • string $format the requested format
  • array $context the serialization context
public Symfony\Component\Serializer\Normalizer\AbstractNormalizer::CIRCULAR_REFERENCE_HANDLER = 'circular_reference_handler'

Handler to call when a circular reference has been detected.

If you specify no handler, a CircularReferenceException is thrown.

The method will be called with ($object, $format, $context) and its
return value is returned as the result of the normalize call.

public Symfony\Component\Serializer\Normalizer\AbstractNormalizer::CIRCULAR_REFERENCE_LIMIT = 'circular_reference_limit'

How many loops of circular reference to allow while normalizing.

The default value of 1 means that when we encounter the same object a
second time, we consider that a circular reference.

You can raise this value for special cases, e.g. in combination with the
max depth setting of the object normalizer.

public Symfony\Component\Serializer\Normalizer\DenormalizerInterface::COLLECT_DENORMALIZATION_ERRORS = 'collect_denormalization_errors'
public Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer::DEEP_OBJECT_TO_POPULATE = 'deep_object_to_populate'

Flag to tell the denormalizer to also populate existing objects on
attributes of the main object.

Setting this to true is only useful if you also specify the root object

public Symfony\Component\Serializer\Normalizer\AbstractNormalizer::DEFAULT_CONSTRUCTOR_ARGUMENTS = 'default_constructor_arguments'

Hashmap of default values for constructor arguments.

The names need to match the parameter names in the constructor arguments.

public Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer::DEPTH_KEY_PATTERN = 'depth_%s::%s'

How to track the current depth in the context.

public Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer::DISABLE_TYPE_ENFORCEMENT = 'disable_type_enforcement'

While denormalizing, we can verify that types match.

You can disable this by setting this flag to true.

public Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer::ENABLE_MAX_DEPTH = 'enable_max_depth'

Set to true to respect the max depth metadata on fields.

public Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer::EXCLUDE_FROM_CACHE_KEY = 'exclude_from_cache_key'

Specify which context key are not relevant to determine which attributes
of an object to (de)normalize.

public Symfony\Component\Serializer\Normalizer\AbstractNormalizer::GROUPS = 'groups'

Only (de)normalize attributes that are in the specified groups.

public Symfony\Component\Serializer\Normalizer\AbstractNormalizer::IGNORED_ATTRIBUTES = 'ignored_attributes'

Skip the specified attributes when normalizing an object tree.

This list is applied to each element of nested structures.

Note: The behaviour for nested structures is different from ATTRIBUTES
for historical reason. Aligning the behaviour would be a BC break.

public Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer::MAX_DEPTH_HANDLER = 'max_depth_handler'

Callback to allow to set a value for an attribute when the max depth has
been reached.

If no callback is given, the attribute is skipped. If a callable is
given, its return value is used (even if null).

The arguments are:

  • mixed $attributeValue value of this field
  • object $object the whole object being normalized
  • string $attributeName name of the attribute being normalized
  • string $format the requested format
  • array $context the serialization context
public Symfony\Component\Serializer\Normalizer\AbstractNormalizer::OBJECT_TO_POPULATE = 'object_to_populate'

Instead of creating a new instance of an object, update the specified object.

If you have a nested structure, child objects will be overwritten with
new instances unless you set DEEP_OBJECT_TO_POPULATE to true.

public Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer::PRESERVE_EMPTY_OBJECTS = 'preserve_empty_objects'

Flag to control whether an empty object should be kept as an object (in
JSON: {}) or converted to a list (in JSON: []).

public Symfony\Component\Serializer\Normalizer\AbstractNormalizer::REQUIRE_ALL_PROPERTIES = 'require_all_properties'

Require all properties to be listed in the input instead of falling
back to null for nullable ones.

public Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer::SKIP_NULL_VALUES = 'skip_null_values'

Flag to control whether fields with the value null should be output
when normalizing or omitted.

public Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer::SKIP_UNINITIALIZED_VALUES = 'skip_uninitialized_values'

Flag to control whether uninitialized PHP>=7.4 typed class properties
should be excluded when normalizing.

public Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer::__construct(?Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactoryInterface $classMetadataFactory = NULL, ?Symfony\Component\Serializer\NameConverter\NameConverterInterface $nameConverter = NULL, ?Symfony\Component\PropertyInfo\PropertyTypeExtractorInterface $propertyTypeExtractor = NULL, ?Symfony\Component\Serializer\Mapping\ClassDiscriminatorResolverInterface $classDiscriminatorResolver = NULL, ?callable $objectClassResolver = NULL, array $defaultContext = [])
public Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer::denormalize(?mixed $data, string $type, ?string $format = NULL, array $context = [])
  • return mixed
public getSupportedTypes(?string $format) : array
public hasCacheableSupportsMethod() : bool
  • deprecated since Symfony 6.3, use "getSupportedTypes()" instead
public Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer::normalize(?mixed $object, ?string $format = NULL, array $context = [])
  • return array|string|int|float|bool|\ArrayObject|null
public Symfony\Component\Serializer\Normalizer\AbstractNormalizer::setSerializer(Symfony\Component\Serializer\SerializerInterface $serializer)
  • return void
public supportsDenormalization(?mixed $data, string $type, ?string $format = NULL) : bool
  • param array $context
public supportsNormalization(?mixed $data, ?string $format = NULL) : bool
  • param array $context
protected Symfony\Component\Serializer\Normalizer\AbstractNormalizer::CIRCULAR_REFERENCE_LIMIT_COUNTERS = 'circular_reference_limit_counters'
  • internal
protected Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer::$classDiscriminatorResolver = NULL
  • var \ClassDiscriminatorResolverInterface|null
protected Symfony\Component\Serializer\Normalizer\AbstractNormalizer::$classMetadataFactory = NULL
  • var \ClassMetadataFactoryInterface|null
protected Symfony\Component\Serializer\Normalizer\AbstractNormalizer::$defaultContext = ['allow_extra_attributes' => true, 'circular_reference_handler' => NULL, 'circular_reference_limit' => 1, 'ignored_attributes' => []]
protected Symfony\Component\Serializer\Normalizer\AbstractNormalizer::$nameConverter = NULL
  • var \NameConverterInterface|null
protected Symfony\Component\Serializer\Normalizer\AbstractNormalizer::$serializer = NULL
  • var \SerializerInterface
protected final Symfony\Component\Serializer\Normalizer\AbstractNormalizer::applyCallbacks(?mixed $value, object|string $object, string $attribute, ?string $format, array $context) : ?mixed
protected Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer::createChildContext(array $parentContext, string $attribute, ?string $format) : array

Overwritten to update the cache key for the child.

We must not mix up the attribute cache between parent and children.

  • internal
protected Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer::denormalizeParameter(ReflectionClass $class, ReflectionParameter $parameter, string $parameterName, ?mixed $parameterData, array $context, ?string $format = NULL) : ?mixed
  • internal
protected extractAttributes(object $object, ?string $format = NULL, array $context = []) : array
protected Symfony\Component\Serializer\Normalizer\AbstractNormalizer::extractObjectToPopulate(string $class, array $context, ?string $key = NULL) : ?object

Extract the object_to_populate field from the context if it exists
and is an instance of the provided $class.

  • param string $class The class the object should be
  • param string|null $key They in which to look for the object to populate.
    Keeps backwards compatibility with AbstractNormalizer.
protected Symfony\Component\Serializer\Normalizer\AbstractNormalizer::getAllowedAttributes(object|string $classOrObject, array $context, bool $attributesAsString = false)

Gets attributes to normalize using groups.

  • param bool $attributesAsString If false, return an array of {@link AttributeMetadataInterface}
  • return string[]|\AttributeMetadataInterface[]|bool
  • throws \LogicException if the 'allow_extra_attributes' context variable is false and no class metadata factory is provided
protected Symfony\Component\Serializer\Normalizer\AbstractNormalizer::getAttributeDenormalizationContext(string $class, string $attribute, array $context) : array

Computes the denormalization context merged with current one. Metadata always wins over global context, as more specific.

  • internal
protected Symfony\Component\Serializer\Normalizer\AbstractNormalizer::getAttributeMetadata(object|string $objectOrClass, string $attribute) : ?Symfony\Component\Serializer\Mapping\AttributeMetadataInterface
  • internal
protected Symfony\Component\Serializer\Normalizer\AbstractNormalizer::getAttributeNormalizationContext(object $object, string $attribute, array $context) : array

Computes the normalization context merged with current one. Metadata always wins over global context, as more specific.

  • internal
protected Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer::getAttributes(object $object, ?string $format, array $context) : array

Gets and caches attributes for the given object, format and context.

  • return string[]
protected getAttributeValue(object $object, string $attribute, ?string $format = NULL, array $context = []) : ?mixed
protected Symfony\Component\Serializer\Normalizer\AbstractNormalizer::getConstructor(array $data, string $class, array $context, ReflectionClass $reflectionClass, array|bool $allowedAttributes) : ?ReflectionMethod

Returns the method to use to construct an object. This method must be either
the object constructor or static.

protected Symfony\Component\Serializer\Normalizer\AbstractNormalizer::getGroups(array $context) : array
protected Symfony\Component\Serializer\Normalizer\AbstractNormalizer::handleCircularReference(object $object, ?string $format = NULL, array $context = []) : ?mixed

Handles a circular reference.

If a circular reference handler is set, it will be called. Otherwise, a
{@class CircularReferenceException} will be thrown.

  • final
  • throws \CircularReferenceException
protected Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer::instantiateObject(array $data, string $class, array $context, ReflectionClass $reflectionClass, array|bool $allowedAttributes, ?string $format = NULL)
  • return object
protected Symfony\Component\Serializer\Normalizer\AbstractNormalizer::isAllowedAttribute(object|string $classOrObject, string $attribute, ?string $format = NULL, array $context = [])

Is this attribute allowed?

  • return bool
protected Symfony\Component\Serializer\Normalizer\AbstractNormalizer::isCircularReference(object $object, array $context) : bool

Detects if the configured circular reference limit is reached.

  • throws \CircularReferenceException
protected Symfony\Component\Serializer\Normalizer\AbstractNormalizer::prepareForDenormalization(?mixed $data) : array

Normalizes the given data to an array. It's particularly useful during
the denormalization process.

protected setAttributeValue(object $object, string $attribute, ?mixed $value, ?string $format = NULL, array $context = [])
  • return void
protected final Symfony\Component\Serializer\Normalizer\AbstractNormalizer::validateCallbackContext(array $context, string $contextType = '') : void

Validate callbacks set in context.

  • param string $contextType Used to specify which context is invalid in exceptions
  • throws \InvalidArgumentException
private static $setterAccessibleCache = []
private isGetMethod(ReflectionMethod $method) : bool

Checks if a method's name matches /^(get|is|has).+$/ and can be called non-statically without parameters.

private supports(string $class) : bool

Checks if the given class has any getter method.

private static $setterAccessibleCache = []
© 2023 Bruce Wells
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