interface TypedDataManagerInterface

interface TypedDataManagerInterface extends PluginManagerInterface, CachedDiscoveryInterface {
    
    /**
     * Instantiates a typed data object.
     *
     * @param string $data_type
     *   The data type, for which a typed object should be instantiated.
     * @param array $configuration
     *   The plugin configuration array, i.e. an array with the following keys:
     *   - data_definition: The data definition object, i.e. an instance of
     *     \Drupal\Core\TypedData\DataDefinitionInterface.
     *   - name: The name of the property or the delta of the list item if a
     *     property or list item is to be created. Otherwise, this should be set
     *     to NULL, but the key must be specified.
     *   - parent: The parent typed data object implementing either the
     *     ListInterface or the ComplexDataInterface if a property or list item is
     *     to be created. Otherwise, this should be set to NULL, but the key must
     *     be specified.
     *
     * @return \Drupal\Core\TypedData\TypedDataInterface
     *   The instantiated typed data object.
     *
     * @see \Drupal\Core\TypedData\TypedDataManager::create()
     */
    public function createInstance($data_type, array $configuration = []);
    
    /**
     * Creates a new typed data object instance.
     *
     * @param \Drupal\Core\TypedData\DataDefinitionInterface $definition
     *   The data definition of the typed data object. For backwards-compatibility
     *   an array representation of the data definition may be passed also.
     * @param mixed $value
     *   (optional) The data value. If set, it has to match one of the supported
     *   data type format as documented for the data type classes.
     * @param string $name
     *   (optional) If a property or list item is to be created, the name of the
     *   property or the delta of the list item.
     * @param mixed $parent
     *   (optional) If a property or list item is to be created, the parent typed
     *   data object implementing either the ListInterface or the
     *   ComplexDataInterface.
     *
     * @return \Drupal\Core\TypedData\TypedDataInterface
     *   The instantiated typed data object.
     *
     * @see \Drupal\Core\TypedData\TypedDataManager::getPropertyInstance()
     * @see \Drupal\Core\TypedData\Plugin\DataType\BinaryData
     * @see \Drupal\Core\TypedData\Plugin\DataType\BooleanData
     * @see \Drupal\Core\TypedData\Plugin\DataType\Date
     * @see \Drupal\Core\TypedData\Plugin\DataType\Duration
     * @see \Drupal\Core\TypedData\Plugin\DataType\FloatData
     * @see \Drupal\Core\TypedData\Plugin\DataType\IntegerData
     * @see \Drupal\Core\TypedData\Plugin\DataType\StringData
     * @see \Drupal\Core\TypedData\Plugin\DataType\Uri
     */
    public function create(DataDefinitionInterface $definition, $value = NULL, $name = NULL, $parent = NULL);
    
    /**
     * Creates a new data definition object.
     *
     * While data definitions objects may be created directly if the definition
     * class used by a data type is known, this method allows the creation of data
     * definitions for any given data type.
     *
     * For example, if a definition for a map is to be created, the following code
     * could be used instead of calling this method with the argument 'map':
     * @code
     *   $map_definition = \Drupal\Core\TypedData\MapDataDefinition::create();
     * @endcode
     *
     * @param string $data_type
     *   The data type plugin ID, for which a data definition object should be
     *   created.
     *
     * @return \Drupal\Core\TypedData\DataDefinitionInterface
     *   A data definition object for the given data type. The class of this
     *   object is provided by the definition_class in the plugin annotation.
     *
     * @see \Drupal\Core\TypedData\TypedDataManager::createListDataDefinition()
     */
    public function createDataDefinition($data_type);
    
    /**
     * Creates a new list data definition for items of the given data type.
     *
     * @param string $item_type
     *   The item type, for which a list data definition should be created.
     *
     * @return \Drupal\Core\TypedData\ListDataDefinitionInterface
     *   A list definition for items of the given data type.
     *
     * @see \Drupal\Core\TypedData\TypedDataManager::createDataDefinition()
     */
    public function createListDataDefinition($item_type);
    
    /**
     * {@inheritdoc}
     *
     * @param array $options
     *   An array of options with the following keys:
     *   - object: The parent typed data object, implementing the
     *     TypedDataInterface and either the ListInterface or the
     *     ComplexDataInterface.
     *   - property: The name of the property to instantiate, or the delta of the
     *     the list item to instantiate.
     *   - value: The value to set. If set, it has to match one of the supported
     *     data type formats as documented by the data type classes.
     *
     * @return \Drupal\Core\TypedData\TypedDataInterface
     *   The new property instance.
     *
     * @throws \InvalidArgumentException
     *   If the given property is not known, or the passed object does not
     *   implement the ListInterface or the ComplexDataInterface.
     *
     * @see \Drupal\Core\TypedData\TypedDataManager::getPropertyInstance()
     */
    public function getInstance(array $options);
    
    /**
     * Get a typed data instance for a property of a given typed data object.
     *
     * This method will use prototyping for fast and efficient instantiation of
     * many property objects with the same property path; for example,
     * when multiple comments are used comment_body.0.value needs to be
     * instantiated very often.
     *
     * Prototyping is done by the root object's data type and the given
     * property path, i.e. all property instances having the same property path
     * and inheriting from the same data type are prototyped.
     *
     * @param \Drupal\Core\TypedData\TypedDataInterface $object
     *   The parent typed data object, implementing the TypedDataInterface and
     *   either the ListInterface or the ComplexDataInterface.
     * @param string $property_name
     *   The name of the property to instantiate, or the delta of a list item.
     * @param mixed $value
     *   (optional) The data value. If set, it has to match one of the supported
     *   data type formats as documented by the data type classes.
     *
     * @return \Drupal\Core\TypedData\TypedDataInterface
     *   The new property instance.
     *
     * @throws \InvalidArgumentException
     *   If the given property is not known, or the passed object does not
     *   implement the ListInterface or the ComplexDataInterface.
     *
     * @see \Drupal\Core\TypedData\TypedDataManager::create()
     */
    public function getPropertyInstance(TypedDataInterface $object, $property_name, $value = NULL);
    
    /**
     * Gets the validator for validating typed data.
     *
     * @return \Symfony\Component\Validator\Validator\ValidatorInterface
     *   The validator object.
     */
    public function getValidator();
    
    /**
     * Sets the validator for validating typed data.
     *
     * @param \Symfony\Component\Validator\Validator\ValidatorInterface $validator
     *   The validator object to set.
     */
    public function setValidator(ValidatorInterface $validator);
    
    /**
     * Gets the validation constraint manager.
     *
     * @return \Drupal\Core\Validation\ConstraintManager
     *   The constraint manager.
     */
    public function getValidationConstraintManager();
    
    /**
     * Sets the validation constraint manager.
     *
     * The validation constraint manager is used to instantiate validation
     * constraint plugins.
     *
     * @param \Drupal\Core\Validation\ConstraintManager $constraintManager
     *   The constraint manager to set.
     */
    public function setValidationConstraintManager(ConstraintManager $constraintManager);
    
    /**
     * Gets default constraints for the given data definition.
     *
     * This generates default constraint definitions based on the data definition;
     * for example, a NotNull constraint is generated if the data is defined as
     * required. Besides that, any constraints defined for the data type (that is,
     * below the 'constraint' key of the type's plugin definition) are taken into
     * account.
     *
     * @param \Drupal\Core\TypedData\DataDefinitionInterface $definition
     *   A data definition.
     *
     * @return array
     *   An array of validation constraint definitions, keyed by constraint name.
     *   Each constraint definition can be used for instantiating
     *   \Symfony\Component\Validator\Constraint objects.
     */
    public function getDefaultConstraints(DataDefinitionInterface $definition);
    
    /**
     * Gets the canonical representation of a TypedData object.
     *
     * The canonical representation is typically used when data is passed on to
     * other code components. In many use cases, the TypedData object is mostly
     * unified adapter wrapping a primary value (a string, an entity, etc.) which
     * is the canonical representation that consuming code like constraint
     * validators are really interested in. For some APIs, though, the domain
     * object (for example, Field API's FieldItem and FieldItemList) directly
     * implements TypedDataInterface, and the canonical representation is thus the
     * data object itself.
     *
     * When a TypedData object gets validated, for example, its canonical
     * representation is passed on to constraint validators, which thus receive
     * an Entity unwrapped, but a FieldItem as is.
     *
     * Data types specify whether their data objects need unwrapping by using the
     * 'unwrap_for_canonical_representation' property in the data definition
     * (defaults to TRUE).
     *
     * @param \Drupal\Core\TypedData\TypedDataInterface $data
     *   The data.
     *
     * @return mixed
     *   The canonical representation of the passed data.
     */
    public function getCanonicalRepresentation(TypedDataInterface $data);

}