/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php

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<?php

declare(strict_types=1);

namespace Doctrine\ORM\Mapping;

use BadMethodCallException;
use DateInterval;
use DateTime;
use DateTimeImmutable;
use Doctrine\DBAL\Platforms\AbstractPlatform;
use Doctrine\DBAL\Types\Type;
use Doctrine\DBAL\Types\Types;
use Doctrine\Deprecations\Deprecation;
use Doctrine\Instantiator\Instantiator;
use Doctrine\Instantiator\InstantiatorInterface;
use Doctrine\ORM\Cache\Exception\CacheException;
use Doctrine\ORM\Cache\Exception\NonCacheableEntityAssociation;
use Doctrine\ORM\Id\AbstractIdGenerator;
use Doctrine\Persistence\Mapping\ClassMetadata;
use Doctrine\Persistence\Mapping\ReflectionService;
use InvalidArgumentException;
use ReflectionClass;
use ReflectionNamedType;
use ReflectionProperty;
use RuntimeException;

use function array_diff;
use function array_flip;
use function array_intersect;
use function array_keys;
use function array_map;
use function array_merge;
use function array_pop;
use function array_values;
use function assert;
use function class_exists;
use function count;
use function explode;
use function gettype;
use function in_array;
use function interface_exists;
use function is_array;
use function is_subclass_of;
use function ltrim;
use function method_exists;
use function spl_object_id;
use function str_replace;
use function strpos;
use function strtolower;
use function trait_exists;
use function trim;

use const PHP_VERSION_ID;

/**
 * A <tt>ClassMetadata</tt> instance holds all the object-relational mapping metadata
 * of an entity and its associations.
 *
 * Once populated, ClassMetadata instances are usually cached in a serialized form.
 *
 * <b>IMPORTANT NOTE:</b>
 *
 * The fields of this class are only public for 2 reasons:
 * 1) To allow fast READ access.
 * 2) To drastically reduce the size of a serialized instance (private/protected members
 *    get the whole class name, namespace inclusive, prepended to every property in
 *    the serialized representation).
 *
 * @template-covariant T of object
 * @template-implements ClassMetadata<T>
 */
class ClassMetadataInfo implements ClassMetadata
{
    /* The inheritance mapping types */
    /**
     * NONE means the class does not participate in an inheritance hierarchy
     * and therefore does not need an inheritance mapping type.
     */
    public const INHERITANCE_TYPE_NONE = 1;

    /**
     * JOINED means the class will be persisted according to the rules of
     * <tt>Class Table Inheritance</tt>.
     */
    public const INHERITANCE_TYPE_JOINED = 2;

    /**
     * SINGLE_TABLE means the class will be persisted according to the rules of
     * <tt>Single Table Inheritance</tt>.
     */
    public const INHERITANCE_TYPE_SINGLE_TABLE = 3;

    /**
     * TABLE_PER_CLASS means the class will be persisted according to the rules
     * of <tt>Concrete Table Inheritance</tt>.
     */
    public const INHERITANCE_TYPE_TABLE_PER_CLASS = 4;

    /* The Id generator types. */
    /**
     * AUTO means the generator type will depend on what the used platform prefers.
     * Offers full portability.
     */
    public const GENERATOR_TYPE_AUTO = 1;

    /**
     * SEQUENCE means a separate sequence object will be used. Platforms that do
     * not have native sequence support may emulate it. Full portability is currently
     * not guaranteed.
     */
    public const GENERATOR_TYPE_SEQUENCE = 2;

    /**
     * TABLE means a separate table is used for id generation.
     * Offers full portability (in that it results in an exception being thrown
     * no matter the platform).
     *
     * @deprecated no replacement planned
     */
    public const GENERATOR_TYPE_TABLE = 3;

    /**
     * IDENTITY means an identity column is used for id generation. The database
     * will fill in the id column on insertion. Platforms that do not support
     * native identity columns may emulate them. Full portability is currently
     * not guaranteed.
     */
    public const GENERATOR_TYPE_IDENTITY = 4;

    /**
     * NONE means the class does not have a generated id. That means the class
     * must have a natural, manually assigned id.
     */
    public const GENERATOR_TYPE_NONE = 5;

    /**
     * UUID means that a UUID/GUID expression is used for id generation. Full
     * portability is currently not guaranteed.
     *
     * @deprecated use an application-side generator instead
     */
    public const GENERATOR_TYPE_UUID = 6;

    /**
     * CUSTOM means that customer will use own ID generator that supposedly work
     */
    public const GENERATOR_TYPE_CUSTOM = 7;

    /**
     * DEFERRED_IMPLICIT means that changes of entities are calculated at commit-time
     * by doing a property-by-property comparison with the original data. This will
     * be done for all entities that are in MANAGED state at commit-time.
     *
     * This is the default change tracking policy.
     */
    public const CHANGETRACKING_DEFERRED_IMPLICIT = 1;

    /**
     * DEFERRED_EXPLICIT means that changes of entities are calculated at commit-time
     * by doing a property-by-property comparison with the original data. This will
     * be done only for entities that were explicitly saved (through persist() or a cascade).
     */
    public const CHANGETRACKING_DEFERRED_EXPLICIT = 2;

    /**
     * NOTIFY means that Doctrine relies on the entities sending out notifications
     * when their properties change. Such entity classes must implement
     * the <tt>NotifyPropertyChanged</tt> interface.
     */
    public const CHANGETRACKING_NOTIFY = 3;

    /**
     * Specifies that an association is to be fetched when it is first accessed.
     */
    public const FETCH_LAZY = 2;

    /**
     * Specifies that an association is to be fetched when the owner of the
     * association is fetched.
     */
    public const FETCH_EAGER = 3;

    /**
     * Specifies that an association is to be fetched lazy (on first access) and that
     * commands such as Collection#count, Collection#slice are issued directly against
     * the database if the collection is not yet initialized.
     */
    public const FETCH_EXTRA_LAZY = 4;

    /**
     * Identifies a one-to-one association.
     */
    public const ONE_TO_ONE = 1;

    /**
     * Identifies a many-to-one association.
     */
    public const MANY_TO_ONE = 2;

    /**
     * Identifies a one-to-many association.
     */
    public const ONE_TO_MANY = 4;

    /**
     * Identifies a many-to-many association.
     */
    public const MANY_TO_MANY = 8;

    /**
     * Combined bitmask for to-one (single-valued) associations.
     */
    public const TO_ONE = 3;

    /**
     * Combined bitmask for to-many (collection-valued) associations.
     */
    public const TO_MANY = 12;

    /**
     * ReadOnly cache can do reads, inserts and deletes, cannot perform updates or employ any locks,
     */
    public const CACHE_USAGE_READ_ONLY = 1;

    /**
     * Nonstrict Read Write Cache doesn’t employ any locks but can do inserts, update and deletes.
     */
    public const CACHE_USAGE_NONSTRICT_READ_WRITE = 2;

    /**
     * Read Write Attempts to lock the entity before update/delete.
     */
    public const CACHE_USAGE_READ_WRITE = 3;

    /**
     * READ-ONLY: The name of the entity class.
     *
     * @var string
     * @psalm-var class-string<T>
     */
    public $name;

    /**
     * READ-ONLY: The namespace the entity class is contained in.
     *
     * @var string
     * @todo Not really needed. Usage could be localized.
     */
    public $namespace;

    /**
     * READ-ONLY: The name of the entity class that is at the root of the mapped entity inheritance
     * hierarchy. If the entity is not part of a mapped inheritance hierarchy this is the same
     * as {@link $name}.
     *
     * @var string
     * @psalm-var class-string
     */
    public $rootEntityName;

    /**
     * READ-ONLY: The definition of custom generator. Only used for CUSTOM
     * generator type
     *
     * The definition has the following structure:
     * <code>
     * array(
     *     'class' => 'ClassName',
     * )
     * </code>
     *
     * @todo Merge with tableGeneratorDefinition into generic generatorDefinition
     * @var array<string, string>|null
     */
    public $customGeneratorDefinition;

    /**
     * The name of the custom repository class used for the entity class.
     * (Optional).
     *
     * @var string|null
     * @psalm-var ?class-string
     */
    public $customRepositoryClassName;

    /**
     * READ-ONLY: Whether this class describes the mapping of a mapped superclass.
     *
     * @var bool
     */
    public $isMappedSuperclass = false;

    /**
     * READ-ONLY: Whether this class describes the mapping of an embeddable class.
     *
     * @var bool
     */
    public $isEmbeddedClass = false;

    /**
     * READ-ONLY: The names of the parent classes (ancestors).
     *
     * @psalm-var list<class-string>
     */
    public $parentClasses = [];

    /**
     * READ-ONLY: The names of all subclasses (descendants).
     *
     * @psalm-var list<class-string>
     */
    public $subClasses = [];

    /**
     * READ-ONLY: The names of all embedded classes based on properties.
     *
     * @psalm-var array<string, mixed[]>
     */
    public $embeddedClasses = [];

    /**
     * READ-ONLY: The named queries allowed to be called directly from Repository.
     *
     * @psalm-var array<string, array<string, mixed>>
     */
    public $namedQueries = [];

    /**
     * READ-ONLY: The named native queries allowed to be called directly from Repository.
     *
     * A native SQL named query definition has the following structure:
     * <pre>
     * array(
     *     'name'               => <query name>,
     *     'query'              => <sql query>,
     *     'resultClass'        => <class of the result>,
     *     'resultSetMapping'   => <name of a SqlResultSetMapping>
     * )
     * </pre>
     *
     * @psalm-var array<string, array<string, mixed>>
     */
    public $namedNativeQueries = [];

    /**
     * READ-ONLY: The mappings of the results of native SQL queries.
     *
     * A native result mapping definition has the following structure:
     * <pre>
     * array(
     *     'name'               => <result name>,
     *     'entities'           => array(<entity result mapping>),
     *     'columns'            => array(<column result mapping>)
     * )
     * </pre>
     *
     * @psalm-var array<string, array{
     *                name: string,
     *                entities: mixed[],
     *                columns: mixed[]
     *            }>
     */
    public $sqlResultSetMappings = [];

    /**
     * READ-ONLY: The field names of all fields that are part of the identifier/primary key
     * of the mapped entity class.
     *
     * @psalm-var list<string>
     */
    public $identifier = [];

    /**
     * READ-ONLY: The inheritance mapping type used by the class.
     *
     * @var int
     * @psalm-var self::$INHERITANCE_TYPE_*
     */
    public $inheritanceType = self::INHERITANCE_TYPE_NONE;

    /**
     * READ-ONLY: The Id generator type used by the class.
     *
     * @var int
     */
    public $generatorType = self::GENERATOR_TYPE_NONE;

    /**
     * READ-ONLY: The field mappings of the class.
     * Keys are field names and values are mapping definitions.
     *
     * The mapping definition array has the following values:
     *
     * - <b>fieldName</b> (string)
     * The name of the field in the Entity.
     *
     * - <b>type</b> (string)
     * The type name of the mapped field. Can be one of Doctrine's mapping types
     * or a custom mapping type.
     *
     * - <b>columnName</b> (string, optional)
     * The column name. Optional. Defaults to the field name.
     *
     * - <b>length</b> (integer, optional)
     * The database length of the column. Optional. Default value taken from
     * the type.
     *
     * - <b>id</b> (boolean, optional)
     * Marks the field as the primary key of the entity. Multiple fields of an
     * entity can have the id attribute, forming a composite key.
     *
     * - <b>nullable</b> (boolean, optional)
     * Whether the column is nullable. Defaults to FALSE.
     *
     * - <b>columnDefinition</b> (string, optional, schema-only)
     * The SQL fragment that is used when generating the DDL for the column.
     *
     * - <b>precision</b> (integer, optional, schema-only)
     * The precision of a decimal column. Only valid if the column type is decimal.
     *
     * - <b>scale</b> (integer, optional, schema-only)
     * The scale of a decimal column. Only valid if the column type is decimal.
     *
     * - <b>'unique'</b> (string, optional, schema-only)
     * Whether a unique constraint should be generated for the column.
     *
     * @var mixed[]
     * @psalm-var array<string, array{
     *      type: string,
     *      fieldName: string,
     *      columnName?: string,
     *      length?: int,
     *      id?: bool,
     *      nullable?: bool,
     *      columnDefinition?: string,
     *      precision?: int,
     *      scale?: int,
     *      unique?: string,
     *      inherited?: class-string,
     *      originalClass?: class-string,
     *      originalField?: string,
     *      quoted?: bool,
     *      requireSQLConversion?: bool,
     *      declared?: class-string,
     *      declaredField?: string,
     *      options: array<mixed>
     * }>
     */
    public $fieldMappings = [];

    /**
     * READ-ONLY: An array of field names. Used to look up field names from column names.
     * Keys are column names and values are field names.
     *
     * @psalm-var array<string, string>
     */
    public $fieldNames = [];

    /**
     * READ-ONLY: A map of field names to column names. Keys are field names and values column names.
     * Used to look up column names from field names.
     * This is the reverse lookup map of $_fieldNames.
     *
     * @deprecated 3.0 Remove this.
     *
     * @var mixed[]
     */
    public $columnNames = [];

    /**
     * READ-ONLY: The discriminator value of this class.
     *
     * <b>This does only apply to the JOINED and SINGLE_TABLE inheritance mapping strategies
     * where a discriminator column is used.</b>
     *
     * @see discriminatorColumn
     *
     * @var mixed
     */
    public $discriminatorValue;

    /**
     * READ-ONLY: The discriminator map of all mapped classes in the hierarchy.
     *
     * <b>This does only apply to the JOINED and SINGLE_TABLE inheritance mapping strategies
     * where a discriminator column is used.</b>
     *
     * @see discriminatorColumn
     *
     * @var mixed
     */
    public $discriminatorMap = [];

    /**
     * READ-ONLY: The definition of the discriminator column used in JOINED and SINGLE_TABLE
     * inheritance mappings.
     *
     * @psalm-var array<string, mixed>
     */
    public $discriminatorColumn;

    /**
     * READ-ONLY: The primary table definition. The definition is an array with the
     * following entries:
     *
     * name => <tableName>
     * schema => <schemaName>
     * indexes => array
     * uniqueConstraints => array
     *
     * @var mixed[]
     * @psalm-var array{
     *               name: string,
     *               schema: string,
     *               indexes: array,
     *               uniqueConstraints: array,
     *               options: array<string, mixed>,
     *               quoted?: bool
     *           }
     */
    public $table;

    /**
     * READ-ONLY: The registered lifecycle callbacks for entities of this class.
     *
     * @psalm-var array<string, list<string>>
     */
    public $lifecycleCallbacks = [];

    /**
     * READ-ONLY: The registered entity listeners.
     *
     * @psalm-var array<string, list<array{class: class-string, method: string}>>
     */
    public $entityListeners = [];

    /**
     * READ-ONLY: The association mappings of this class.
     *
     * The mapping definition array supports the following keys:
     *
     * - <b>fieldName</b> (string)
     * The name of the field in the entity the association is mapped to.
     *
     * - <b>targetEntity</b> (string)
     * The class name of the target entity. If it is fully-qualified it is used as is.
     * If it is a simple, unqualified class name the namespace is assumed to be the same
     * as the namespace of the source entity.
     *
     * - <b>mappedBy</b> (string, required for bidirectional associations)
     * The name of the field that completes the bidirectional association on the owning side.
     * This key must be specified on the inverse side of a bidirectional association.
     *
     * - <b>inversedBy</b> (string, required for bidirectional associations)
     * The name of the field that completes the bidirectional association on the inverse side.
     * This key must be specified on the owning side of a bidirectional association.
     *
     * - <b>cascade</b> (array, optional)
     * The names of persistence operations to cascade on the association. The set of possible
     * values are: "persist", "remove", "detach", "merge", "refresh", "all" (implies all others).
     *
     * - <b>orderBy</b> (array, one-to-many/many-to-many only)
     * A map of field names (of the target entity) to sorting directions (ASC/DESC).
     * Example: array('priority' => 'desc')
     *
     * - <b>fetch</b> (integer, optional)
     * The fetching strategy to use for the association, usually defaults to FETCH_LAZY.
     * Possible values are: ClassMetadata::FETCH_EAGER, ClassMetadata::FETCH_LAZY.
     *
     * - <b>joinTable</b> (array, optional, many-to-many only)
     * Specification of the join table and its join columns (foreign keys).
     * Only valid for many-to-many mappings. Note that one-to-many associations can be mapped
     * through a join table by simply mapping the association as many-to-many with a unique
     * constraint on the join table.
     *
     * - <b>indexBy</b> (string, optional, to-many only)
     * Specification of a field on target-entity that is used to index the collection by.
     * This field HAS to be either the primary key or a unique column. Otherwise the collection
     * does not contain all the entities that are actually related.
     *
     * A join table definition has the following structure:
     * <pre>
     * array(
     *     'name' => <join table name>,
     *      'joinColumns' => array(<join column mapping from join table to source table>),
     *      'inverseJoinColumns' => array(<join column mapping from join table to target table>)
     * )
     * </pre>
     *
     * @psalm-var array<string, array<string, mixed>>
     */
    public $associationMappings = [];

    /**
     * READ-ONLY: Flag indicating whether the identifier/primary key of the class is composite.
     *
     * @var bool
     */
    public $isIdentifierComposite = false;

    /**
     * READ-ONLY: Flag indicating whether the identifier/primary key contains at least one foreign key association.
     *
     * This flag is necessary because some code blocks require special treatment of this cases.
     *
     * @var bool
     */
    public $containsForeignIdentifier = false;

    /**
     * READ-ONLY: The ID generator used for generating IDs for this class.
     *
     * @var AbstractIdGenerator
     * @todo Remove!
     */
    public $idGenerator;

    /**
     * READ-ONLY: The definition of the sequence generator of this class. Only used for the
     * SEQUENCE generation strategy.
     *
     * The definition has the following structure:
     * <code>
     * array(
     *     'sequenceName' => 'name',
     *     'allocationSize' => '20',
     *     'initialValue' => '1'
     * )
     * </code>
     *
     * @var array<string, mixed>
     * @psalm-var array{sequenceName: string, allocationSize: string, initialValue: string, quoted?: mixed}
     * @todo Merge with tableGeneratorDefinition into generic generatorDefinition
     */
    public $sequenceGeneratorDefinition;

    /**
     * READ-ONLY: The definition of the table generator of this class. Only used for the
     * TABLE generation strategy.
     *
     * @deprecated
     *
     * @var array<string, mixed>
     */
    public $tableGeneratorDefinition;

    /**
     * READ-ONLY: The policy used for change-tracking on entities of this class.
     *
     * @var int
     */
    public $changeTrackingPolicy = self::CHANGETRACKING_DEFERRED_IMPLICIT;

    /**
     * READ-ONLY: A flag for whether or not instances of this class are to be versioned
     * with optimistic locking.
     *
     * @var bool
     */
    public $isVersioned;

    /**
     * READ-ONLY: The name of the field which is used for versioning in optimistic locking (if any).
     *
     * @var mixed
     */
    public $versionField;

    /** @var mixed[] */
    public $cache = null;

    /**
     * The ReflectionClass instance of the mapped class.
     *
     * @var ReflectionClass|null
     */
    public $reflClass;

    /**
     * Is this entity marked as "read-only"?
     *
     * That means it is never considered for change-tracking in the UnitOfWork. It is a very helpful performance
     * optimization for entities that are immutable, either in your domain or through the relation database
     * (coming from a view, or a history table for example).
     *
     * @var bool
     */
    public $isReadOnly = false;

    /**
     * NamingStrategy determining the default column and table names.
     *
     * @var NamingStrategy
     */
    protected $namingStrategy;

    /**
     * The ReflectionProperty instances of the mapped class.
     *
     * @var ReflectionProperty[]|null[]
     */
    public $reflFields = [];

    /** @var InstantiatorInterface|null */
    private $instantiator;

    /**
     * Initializes a new ClassMetadata instance that will hold the object-relational mapping
     * metadata of the class with the given name.
     *
     * @param string $entityName The name of the entity class the new instance is used for.
     * @psalm-param class-string<T> $entityName
     */
    public function __construct($entityName, ?NamingStrategy $namingStrategy = null)
    {
        $this->name           = $entityName;
        $this->rootEntityName = $entityName;
        $this->namingStrategy = $namingStrategy ?: new DefaultNamingStrategy();
        $this->instantiator   = new Instantiator();
    }

    /**
     * Gets the ReflectionProperties of the mapped class.
     *
     * @return ReflectionProperty[]|null[] An array of ReflectionProperty instances.
     * @psalm-return array<ReflectionProperty|null>
     */
    public function getReflectionProperties()
    {
        return $this->reflFields;
    }

    /**
     * Gets a ReflectionProperty for a specific field of the mapped class.
     *
     * @param string $name
     *
     * @return ReflectionProperty
     */
    public function getReflectionProperty($name)
    {
        return $this->reflFields[$name];
    }

    /**
     * Gets the ReflectionProperty for the single identifier field.
     *
     * @return ReflectionProperty
     *
     * @throws BadMethodCallException If the class has a composite identifier.
     */
    public function getSingleIdReflectionProperty()
    {
        if ($this->isIdentifierComposite) {
            throw new BadMethodCallException('Class ' . $this->name . ' has a composite identifier.');
        }

        return $this->reflFields[$this->identifier[0]];
    }

    /**
     * Extracts the identifier values of an entity of this class.
     *
     * For composite identifiers, the identifier values are returned as an array
     * with the same order as the field order in {@link identifier}.
     *
     * @param object $entity
     *
     * @return array<string, mixed>
     */
    public function getIdentifierValues($entity)
    {
        if ($this->isIdentifierComposite) {
            $id = [];

            foreach ($this->identifier as $idField) {
                $value = $this->reflFields[$idField]->getValue($entity);

                if ($value !== null) {
                    $id[$idField] = $value;
                }
            }

            return $id;
        }

        $id    = $this->identifier[0];
        $value = $this->reflFields[$id]->getValue($entity);

        if ($value === null) {
            return [];
        }

        return [$id => $value];
    }

    /**
     * Populates the entity identifier of an entity.
     *
     * @param object $entity
     * @psalm-param array<string, mixed> $id
     *
     * @return void
     *
     * @todo Rename to assignIdentifier()
     */
    public function setIdentifierValues($entity, array $id)
    {
        foreach ($id as $idField => $idValue) {
            $this->reflFields[$idField]->setValue($entity, $idValue);
        }
    }

    /**
     * Sets the specified field to the specified value on the given entity.
     *
     * @param object $entity
     * @param string $field
     * @param mixed  $value
     *
     * @return void
     */
    public function setFieldValue($entity, $field, $value)
    {
        $this->reflFields[$field]->setValue($entity, $value);
    }

    /**
     * Gets the specified field's value off the given entity.
     *
     * @param object $entity
     * @param string $field
     *
     * @return mixed
     */
    public function getFieldValue($entity, $field)
    {
        return $this->reflFields[$field]->getValue($entity);
    }

    /**
     * Creates a string representation of this instance.
     *
     * @return string The string representation of this instance.
     *
     * @todo Construct meaningful string representation.
     */
    public function __toString()
    {
        return self::class . '@' . spl_object_id($this);
    }

    /**
     * Determines which fields get serialized.
     *
     * It is only serialized what is necessary for best unserialization performance.
     * That means any metadata properties that are not set or empty or simply have
     * their default value are NOT serialized.
     *
     * Parts that are also NOT serialized because they can not be properly unserialized:
     *      - reflClass (ReflectionClass)
     *      - reflFields (ReflectionProperty array)
     *
     * @return string[] The names of all the fields that should be serialized.
     */
    public function __sleep()
    {
        // This metadata is always serialized/cached.
        $serialized = [
            'associationMappings',
            'columnNames', //TODO: 3.0 Remove this. Can use fieldMappings[$fieldName]['columnName']
            'fieldMappings',
            'fieldNames',
            'embeddedClasses',
            'identifier',
            'isIdentifierComposite', // TODO: REMOVE
            'name',
            'namespace', // TODO: REMOVE
            'table',
            'rootEntityName',
            'idGenerator', //TODO: Does not really need to be serialized. Could be moved to runtime.
        ];

        // The rest of the metadata is only serialized if necessary.
        if ($this->changeTrackingPolicy !== self::CHANGETRACKING_DEFERRED_IMPLICIT) {
            $serialized[] = 'changeTrackingPolicy';
        }

        if ($this->customRepositoryClassName) {
            $serialized[] = 'customRepositoryClassName';
        }

        if ($this->inheritanceType !== self::INHERITANCE_TYPE_NONE) {
            $serialized[] = 'inheritanceType';
            $serialized[] = 'discriminatorColumn';
            $serialized[] = 'discriminatorValue';
            $serialized[] = 'discriminatorMap';
            $serialized[] = 'parentClasses';
            $serialized[] = 'subClasses';
        }

        if ($this->generatorType !== self::GENERATOR_TYPE_NONE) {
            $serialized[] = 'generatorType';
            if ($this->generatorType === self::GENERATOR_TYPE_SEQUENCE) {
                $serialized[] = 'sequenceGeneratorDefinition';
            }
        }

        if ($this->isMappedSuperclass) {
            $serialized[] = 'isMappedSuperclass';
        }

        if ($this->isEmbeddedClass) {
            $serialized[] = 'isEmbeddedClass';
        }

        if ($this->containsForeignIdentifier) {
            $serialized[] = 'containsForeignIdentifier';
        }

        if ($this->isVersioned) {
            $serialized[] = 'isVersioned';
            $serialized[] = 'versionField';
        }

        if ($this->lifecycleCallbacks) {
            $serialized[] = 'lifecycleCallbacks';
        }

        if ($this->entityListeners) {
            $serialized[] = 'entityListeners';
        }

        if ($this->namedQueries) {
            $serialized[] = 'namedQueries';
        }

        if ($this->namedNativeQueries) {
            $serialized[] = 'namedNativeQueries';
        }

        if ($this->sqlResultSetMappings) {
            $serialized[] = 'sqlResultSetMappings';
        }

        if ($this->isReadOnly) {
            $serialized[] = 'isReadOnly';
        }

        if ($this->customGeneratorDefinition) {
            $serialized[] = 'customGeneratorDefinition';
        }

        if ($this->cache) {
            $serialized[] = 'cache';
        }

        return $serialized;
    }

    /**
     * Creates a new instance of the mapped class, without invoking the constructor.
     *
     * @return object
     */
    public function newInstance()
    {
        return $this->instantiator->instantiate($this->name);
    }

    /**
     * Restores some state that can not be serialized/unserialized.
     *
     * @param ReflectionService $reflService
     *
     * @return void
     */
    public function wakeupReflection($reflService)
    {
        // Restore ReflectionClass and properties
        $this->reflClass    = $reflService->getClass($this->name);
        $this->instantiator = $this->instantiator ?: new Instantiator();

        $parentReflFields = [];

        foreach ($this->embeddedClasses as $property => $embeddedClass) {
            if (isset($embeddedClass['declaredField'])) {
                $childProperty = $reflService->getAccessibleProperty(
                    $this->embeddedClasses[$embeddedClass['declaredField']]['class'],
                    $embeddedClass['originalField']
                );
                assert($childProperty !== null);
                $parentReflFields[$property] = new ReflectionEmbeddedProperty(
                    $parentReflFields[$embeddedClass['declaredField']],
                    $childProperty,
                    $this->embeddedClasses[$embeddedClass['declaredField']]['class']
                );

                continue;
            }

            $fieldRefl = $reflService->getAccessibleProperty(
                $embeddedClass['declared'] ?? $this->name,
                $property
            );

            $parentReflFields[$property] = $fieldRefl;
            $this->reflFields[$property] = $fieldRefl;
        }

        foreach ($this->fieldMappings as $field => $mapping) {
            if (isset($mapping['declaredField']) && isset($parentReflFields[$mapping['declaredField']])) {
                $this->reflFields[$field] = new ReflectionEmbeddedProperty(
                    $parentReflFields[$mapping['declaredField']],
                    $reflService->getAccessibleProperty($mapping['originalClass'], $mapping['originalField']),
                    $mapping['originalClass']
                );
                continue;
            }

            $this->reflFields[$field] = isset($mapping['declared'])
                ? $reflService->getAccessibleProperty($mapping['declared'], $field)
                : $reflService->getAccessibleProperty($this->name, $field);
        }

        foreach ($this->associationMappings as $field => $mapping) {
            $this->reflFields[$field] = isset($mapping['declared'])
                ? $reflService->getAccessibleProperty($mapping['declared'], $field)
                : $reflService->getAccessibleProperty($this->name, $field);
        }
    }

    /**
     * Initializes a new ClassMetadata instance that will hold the object-relational mapping
     * metadata of the class with the given name.
     *
     * @param ReflectionService $reflService The reflection service.
     *
     * @return void
     */
    public function initializeReflection($reflService)
    {
        $this->reflClass = $reflService->getClass($this->name);
        $this->namespace = $reflService->getClassNamespace($this->name);

        if ($this->reflClass) {
            $this->name = $this->rootEntityName = $this->reflClass->getName();
        }

        $this->table['name'] = $this->namingStrategy->classToTableName($this->name);
    }

    /**
     * Validates Identifier.
     *
     * @return void
     *
     * @throws MappingException
     */
    public function validateIdentifier()
    {
        if ($this->isMappedSuperclass || $this->isEmbeddedClass) {
            return;
        }

        // Verify & complete identifier mapping
        if (! $this->identifier) {
            throw MappingException::identifierRequired($this->name);
        }

        if ($this->usesIdGenerator() && $this->isIdentifierComposite) {
            throw MappingException::compositeKeyAssignedIdGeneratorRequired($this->name);
        }
    }

    /**
     * Validates association targets actually exist.
     *
     * @return void
     *
     * @throws MappingException
     */
    public function validateAssociations()
    {
        foreach ($this->associationMappings as $mapping) {
            if (
                ! class_exists($mapping['targetEntity'])
                && ! interface_exists($mapping['targetEntity'])
                && ! trait_exists($mapping['targetEntity'])
            ) {
                throw MappingException::invalidTargetEntityClass($mapping['targetEntity'], $this->name, $mapping['fieldName']);
            }
        }
    }

    /**
     * Validates lifecycle callbacks.
     *
     * @param ReflectionService $reflService
     *
     * @return void
     *
     * @throws MappingException
     */
    public function validateLifecycleCallbacks($reflService)
    {
        foreach ($this->lifecycleCallbacks as $callbacks) {
            foreach ($callbacks as $callbackFuncName) {
                if (! $reflService->hasPublicMethod($this->name, $callbackFuncName)) {
                    throw MappingException::lifecycleCallbackMethodNotFound($this->name, $callbackFuncName);
                }
            }
        }
    }

    /**
     * {@inheritDoc}
     */
    public function getReflectionClass()
    {
        return $this->reflClass;
    }

    /**
     * @psalm-param array{usage?: mixed, region?: mixed} $cache
     *
     * @return void
     */
    public function enableCache(array $cache)
    {
        if (! isset($cache['usage'])) {
            $cache['usage'] = self::CACHE_USAGE_READ_ONLY;
        }

        if (! isset($cache['region'])) {
            $cache['region'] = strtolower(str_replace('\\', '_', $this->rootEntityName));
        }

        $this->cache = $cache;
    }

    /**
     * @param string $fieldName
     * @psalm-param array{usage?: int, region?: string} $cache
     *
     * @return void
     */
    public function enableAssociationCache($fieldName, array $cache)
    {
        $this->associationMappings[$fieldName]['cache'] = $this->getAssociationCacheDefaults($fieldName, $cache);
    }

    /**
     * @param string $fieldName
     * @param array  $cache
     * @psalm-param array{usage?: int, region?: string|null} $cache
     *
     * @return int[]|string[]
     * @psalm-return array{usage: int, region: string|null}
     */
    public function getAssociationCacheDefaults($fieldName, array $cache)
    {
        if (! isset($cache['usage'])) {
            $cache['usage'] = $this->cache['usage'] ?? self::CACHE_USAGE_READ_ONLY;
        }

        if (! isset($cache['region'])) {
            $cache['region'] = strtolower(str_replace('\\', '_', $this->rootEntityName)) . '__' . $fieldName;
        }

        return $cache;
    }

    /**
     * Sets the change tracking policy used by this class.
     *
     * @param int $policy
     *
     * @return void
     */
    public function setChangeTrackingPolicy($policy)
    {
        $this->changeTrackingPolicy = $policy;
    }

    /**
     * Whether the change tracking policy of this class is "deferred explicit".
     *
     * @return bool
     */
    public function isChangeTrackingDeferredExplicit()
    {
        return $this->changeTrackingPolicy === self::CHANGETRACKING_DEFERRED_EXPLICIT;
    }

    /**
     * Whether the change tracking policy of this class is "deferred implicit".
     *
     * @return bool
     */
    public function isChangeTrackingDeferredImplicit()
    {
        return $this->changeTrackingPolicy === self::CHANGETRACKING_DEFERRED_IMPLICIT;
    }

    /**
     * Whether the change tracking policy of this class is "notify".
     *
     * @return bool
     */
    public function isChangeTrackingNotify()
    {
        return $this->changeTrackingPolicy === self::CHANGETRACKING_NOTIFY;
    }

    /**
     * Checks whether a field is part of the identifier/primary key field(s).
     *
     * @param string $fieldName The field name.
     *
     * @return bool TRUE if the field is part of the table identifier/primary key field(s),
     * FALSE otherwise.
     */
    public function isIdentifier($fieldName)
    {
        if (! $this->identifier) {
            return false;
        }

        if (! $this->isIdentifierComposite) {
            return $fieldName === $this->identifier[0];
        }

        return in_array($fieldName, $this->identifier, true);
    }

    /**
     * Checks if the field is unique.
     *
     * @param string $fieldName The field name.
     *
     * @return bool TRUE if the field is unique, FALSE otherwise.
     */
    public function isUniqueField($fieldName)
    {
        $mapping = $this->getFieldMapping($fieldName);

        return $mapping !== false && isset($mapping['unique']) && $mapping['unique'];
    }

    /**
     * Checks if the field is not null.
     *
     * @param string $fieldName The field name.
     *
     * @return bool TRUE if the field is not null, FALSE otherwise.
     */
    public function isNullable($fieldName)
    {
        $mapping = $this->getFieldMapping($fieldName);

        return $mapping !== false && isset($mapping['nullable']) && $mapping['nullable'];
    }

    /**
     * Gets a column name for a field name.
     * If the column name for the field cannot be found, the given field name
     * is returned.
     *
     * @param string $fieldName The field name.
     *
     * @return string The column name.
     */
    public function getColumnName($fieldName)
    {
        return $this->columnNames[$fieldName] ?? $fieldName;
    }

    /**
     * Gets the mapping of a (regular) field that holds some data but not a
     * reference to another object.
     *
     * @param string $fieldName The field name.
     *
     * @return mixed[] The field mapping.
     * @psalm-return array{
     *      type: string,
     *      fieldName: string,
     *      columnName?: string,
     *      inherited?: class-string,
     *      nullable?: bool,
     *      originalClass?: class-string,
     *      originalField?: string,
     *      scale?: int,
     *      precision?: int,
     *      length?: int
     * }
     *
     * @throws MappingException
     */
    public function getFieldMapping($fieldName)
    {
        if (! isset($this->fieldMappings[$fieldName])) {
            throw MappingException::mappingNotFound($this->name, $fieldName);
        }

        return $this->fieldMappings[$fieldName];
    }

    /**
     * Gets the mapping of an association.
     *
     * @see ClassMetadataInfo::$associationMappings
     *
     * @param string $fieldName The field name that represents the association in
     *                          the object model.
     *
     * @return mixed[] The mapping.
     * @psalm-return array<string, mixed>
     *
     * @throws MappingException
     */
    public function getAssociationMapping($fieldName)
    {
        if (! isset($this->associationMappings[$fieldName])) {
            throw MappingException::mappingNotFound($this->name, $fieldName);
        }

        return $this->associationMappings[$fieldName];
    }

    /**
     * Gets all association mappings of the class.
     *
     * @psalm-return array<string, array<string, mixed>>
     */
    public function getAssociationMappings()
    {
        return $this->associationMappings;
    }

    /**
     * Gets the field name for a column name.
     * If no field name can be found the column name is returned.
     *
     * @param string $columnName The column name.
     *
     * @return string The column alias.
     */
    public function getFieldName($columnName)
    {
        return $this->fieldNames[$columnName] ?? $columnName;
    }

    /**
     * Gets the named query.
     *
     * @see ClassMetadataInfo::$namedQueries
     *
     * @param string $queryName The query name.
     *
     * @return string
     *
     * @throws MappingException
     */
    public function getNamedQuery($queryName)
    {
        if (! isset($this->namedQueries[$queryName])) {
            throw MappingException::queryNotFound($this->name, $queryName);
        }

        return $this->namedQueries[$queryName]['dql'];
    }

    /**
     * Gets all named queries of the class.
     *
     * @return mixed[][]
     * @psalm-return array<string, array<string, mixed>>
     */
    public function getNamedQueries()
    {
        return $this->namedQueries;
    }

    /**
     * Gets the named native query.
     *
     * @see ClassMetadataInfo::$namedNativeQueries
     *
     * @param string $queryName The query name.
     *
     * @return mixed[]
     * @psalm-return array<string, mixed>
     *
     * @throws MappingException
     */
    public function getNamedNativeQuery($queryName)
    {
        if (! isset($this->namedNativeQueries[$queryName])) {
            throw MappingException::queryNotFound($this->name, $queryName);
        }

        return $this->namedNativeQueries[$queryName];
    }

    /**
     * Gets all named native queries of the class.
     *
     * @psalm-return array<string, array<string, mixed>>
     */
    public function getNamedNativeQueries()
    {
        return $this->namedNativeQueries;
    }

    /**
     * Gets the result set mapping.
     *
     * @see ClassMetadataInfo::$sqlResultSetMappings
     *
     * @param string $name The result set mapping name.
     *
     * @return mixed[]
     * @psalm-return array{name: string, entities: array, columns: array}
     *
     * @throws MappingException
     */
    public function getSqlResultSetMapping($name)
    {
        if (! isset($this->sqlResultSetMappings[$name])) {
            throw MappingException::resultMappingNotFound($this->name, $name);
        }

        return $this->sqlResultSetMappings[$name];
    }

    /**
     * Gets all sql result set mappings of the class.
     *
     * @return mixed[]
     * @psalm-return array<string, array{name: string, entities: array, columns: array}>
     */
    public function getSqlResultSetMappings()
    {
        return $this->sqlResultSetMappings;
    }

    /**
     * Checks whether given property has type
     *
     * @param string $name Property name
     */
    private function isTypedProperty(string $name): bool
    {
        return PHP_VERSION_ID >= 70400
               && isset($this->reflClass)
               && $this->reflClass->hasProperty($name)
               && $this->reflClass->getProperty($name)->hasType();
    }

    /**
     * Validates & completes the given field mapping based on typed property.
     *
     * @param  mixed[] $mapping The field mapping to validate & complete.
     *
     * @return mixed[] The updated mapping.
     */
    private function validateAndCompleteTypedFieldMapping(array $mapping): array
    {
        $type = $this->reflClass->getProperty($mapping['fieldName'])->getType();

        if ($type) {
            if (
                ! isset($mapping['type'])
                && ($type instanceof ReflectionNamedType)
            ) {
                switch ($type->getName()) {
                    case DateInterval::class:
                        $mapping['type'] = Types::DATEINTERVAL;
                        break;
                    case DateTime::class:
                        $mapping['type'] = Types::DATETIME_MUTABLE;
                        break;
                    case DateTimeImmutable::class:
                        $mapping['type'] = Types::DATETIME_IMMUTABLE;
                        break;
                    case 'array':
                        $mapping['type'] = Types::JSON;
                        break;
                    case 'bool':
                        $mapping['type'] = Types::BOOLEAN;
                        break;
                    case 'float':
                        $mapping['type'] = Types::FLOAT;
                        break;
                    case 'int':
                        $mapping['type'] = Types::INTEGER;
                        break;
                    case 'string':
                        $mapping['type'] = Types::STRING;
                        break;
                }
            }
        }

        return $mapping;
    }

    /**
     * Validates & completes the basic mapping information based on typed property.
     *
     * @param mixed[] $mapping The mapping.
     *
     * @return mixed[] The updated mapping.
     */
    private function validateAndCompleteTypedAssociationMapping(array $mapping): array
    {
        $type = $this->reflClass->getProperty($mapping['fieldName'])->getType();

        if ($type === null || ($mapping['type'] & self::TO_ONE) === 0) {
            return $mapping;
        }

        if (! isset($mapping['targetEntity']) && $type instanceof ReflectionNamedType) {
            $mapping['targetEntity'] = $type->getName();
        }

        return $mapping;
    }

    /**
     * Validates & completes the given field mapping.
     *
     * @psalm-param array<string, mixed> $mapping The field mapping to validate & complete.
     *
     * @return mixed[] The updated mapping.
     *
     * @throws MappingException
     */
    protected function validateAndCompleteFieldMapping(array $mapping): array
    {
        // Check mandatory fields
        if (! isset($mapping['fieldName']) || ! $mapping['fieldName']) {
            throw MappingException::missingFieldName($this->name);
        }

        if ($this->isTypedProperty($mapping['fieldName'])) {
            $mapping = $this->validateAndCompleteTypedFieldMapping($mapping);
        }

        if (! isset($mapping['type'])) {
            // Default to string
            $mapping['type'] = 'string';
        }

        // Complete fieldName and columnName mapping
        if (! isset($mapping['columnName'])) {
            $mapping['columnName'] = $this->namingStrategy->propertyToColumnName($mapping['fieldName'], $this->name);
        }

        if ($mapping['columnName'][0] === '`') {
            $mapping['columnName'] = trim($mapping['columnName'], '`');
            $mapping['quoted']     = true;
        }

        $this->columnNames[$mapping['fieldName']] = $mapping['columnName'];

        if (isset($this->fieldNames[$mapping['columnName']]) || ($this->discriminatorColumn && $this->discriminatorColumn['name'] === $mapping['columnName'])) {
            throw MappingException::duplicateColumnName($this->name, $mapping['columnName']);
        }

        $this->fieldNames[$mapping['columnName']] = $mapping['fieldName'];

        // Complete id mapping
        if (isset($mapping['id']) && $mapping['id'] === true) {
            if ($this->versionField === $mapping['fieldName']) {
                throw MappingException::cannotVersionIdField($this->name, $mapping['fieldName']);
            }

            if (! in_array($mapping['fieldName'], $this->identifier, true)) {
                $this->identifier[] = $mapping['fieldName'];
            }

            // Check for composite key
            if (! $this->isIdentifierComposite && count($this->identifier) > 1) {
                $this->isIdentifierComposite = true;
            }
        }

        if (Type::hasType($mapping['type']) && Type::getType($mapping['type'])->canRequireSQLConversion()) {
            if (isset($mapping['id']) && $mapping['id'] === true) {
                 throw MappingException::sqlConversionNotAllowedForIdentifiers($this->name, $mapping['fieldName'], $mapping['type']);
            }

            $mapping['requireSQLConversion'] = true;
        }

        return $mapping;
    }

    /**
     * Validates & completes the basic mapping information that is common to all
     * association mappings (one-to-one, many-ot-one, one-to-many, many-to-many).
     *
     * @psalm-param array<string, mixed> $mapping The mapping.
     *
     * @return mixed[] The updated mapping.
     * @psalm-return array{
     *                   mappedBy: mixed|null,
     *                   inversedBy: mixed|null,
     *                   isOwningSide: bool,
     *                   sourceEntity: class-string,
     *                   targetEntity: string,
     *                   fieldName: mixed,
     *                   fetch: mixed,
     *                   cascade: array<array-key,string>,
     *                   isCascadeRemove: bool,
     *                   isCascadePersist: bool,
     *                   isCascadeRefresh: bool,
     *                   isCascadeMerge: bool,
     *                   isCascadeDetach: bool,
     *                   type: int,
     *                   originalField: string,
     *                   originalClass: class-string,
     *                   ?orphanRemoval: bool
     *               }
     *
     * @throws MappingException If something is wrong with the …

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