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<?php |
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declare(strict_types=1); |
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namespace Cycle\ORM\Entity\Behavior; |
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use Cycle\ORM\Entity\Behavior\Schema\BaseModifier; |
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use Cycle\ORM\Entity\Behavior\Schema\RegistryModifier; |
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use Cycle\ORM\Entity\Behavior\Exception\BehaviorCompilationException; |
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use Cycle\ORM\Entity\Behavior\Listener\OptimisticLock as Listener; |
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use Cycle\ORM\Schema\GeneratedField; |
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use Cycle\Schema\Definition\Field; |
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use Cycle\Schema\Registry; |
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use Doctrine\Common\Annotations\Annotation\Enum; |
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use Doctrine\Common\Annotations\Annotation\NamedArgumentConstructor; |
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use Doctrine\Common\Annotations\Annotation\Target; |
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use JetBrains\PhpStorm\ArrayShape; |
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use JetBrains\PhpStorm\ExpectedValues; |
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/** |
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* Implements the Optimistic Lock strategy. |
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* Used to prevent concurrent editing of a record in the database. When an entity is locked, the transaction is aborted. |
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* Please keep in mind, the behavior wraps the command in a special WrappedCommand wrapper. |
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* The behavior has three parameters: |
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* - field - is a property with the version in the entity |
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* - column - is a column in the database. |
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* - rule - the strategy for storing the version of the entity |
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* Rule can be one of several rules (class constants can be used): |
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* - RULE_MICROTIME - string with microtime value |
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* - RULE_RAND_STR - random string |
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* - RULE_INCREMENT - automatically incrementing integer version |
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* - RULE_DATETIME - datetime of the entity version |
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* - RULE_MANUAL - manually configured rule |
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* The MANUAL rule provides for the completely manual configuration of an entity property and entity versioning. |
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* |
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* @Annotation |
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* @NamedArgumentConstructor() |
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* @Target({"CLASS"}) |
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*/ |
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#[\Attribute(\Attribute::TARGET_CLASS), NamedArgumentConstructor] |
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final class OptimisticLock extends BaseModifier |
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{ |
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public const RULE_MICROTIME = Listener::RULE_MICROTIME; |
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public const RULE_RAND_STR = Listener::RULE_RAND_STR; |
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public const RULE_INCREMENT = Listener::RULE_INCREMENT; |
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public const RULE_DATETIME = Listener::RULE_DATETIME; |
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public const RULE_MANUAL = Listener::RULE_MANUAL; |
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private const DEFAULT_INT_VERSION = 1; |
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private const STRING_COLUMN_LENGTH = 32; |
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private ?string $column = null; |
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/** |
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* @param non-empty-string $field Version property name |
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* @param non-empty-string|null $column Version column name |
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* @param non-empty-string|null $rule |
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*/ |
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public function __construct( |
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private string $field = 'version', |
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?string $column = null, |
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/** @Enum({"microtime", "random-string", "increment", "datetime"}) */ |
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#[ExpectedValues(valuesFromClass: self::class)] |
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private ?string $rule = null, |
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) { |
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$this->column = $column; |
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} |
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public function compute(Registry $registry): void |
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{ |
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$modifier = new RegistryModifier($registry, $this->role); |
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$this->column = $modifier->findColumnName($this->field, $this->column); |
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if ($this->column !== null) { |
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$this->addField($registry); |
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} |
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} |
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public function render(Registry $registry): void |
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{ |
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$this->column = (new RegistryModifier($registry, $this->role)) |
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->findColumnName($this->field, $this->column) |
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?? $this->field; |
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$this->addField($registry); |
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} |
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protected function getListenerClass(): string |
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{ |
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return Listener::class; |
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} |
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#[ArrayShape(['field' => 'string', 'rule' => 'null|string'])] |
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protected function getListenerArgs(): array |
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{ |
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return [ |
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'field' => $this->field, |
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'rule' => $this->rule, |
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]; |
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} |
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/** |
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* Compute rule based on column type |
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* |
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* @return non-empty-string |
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* |
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* @throws BehaviorCompilationException |
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*/ |
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private function computeRule(Field $field): string |
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{ |
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$type = $field->getType(); |
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return match (true) { |
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RegistryModifier::isIntegerType($type) => self::RULE_INCREMENT, |
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RegistryModifier::isStringType($type) => self::RULE_MICROTIME, |
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RegistryModifier::isDatetimeType($type) => self::RULE_DATETIME, |
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default => throw new BehaviorCompilationException('Failed to compute rule based on column type.'), |
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}; |
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} |
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private function addField(Registry $registry): void |
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{ |
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$fields = $registry->getEntity($this->role)->getFields(); |
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\assert($this->column !== null); |
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$this->rule ??= $fields->has($this->field) |
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? $this->computeRule($fields->get($this->field)) |
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// rule not set, field not fount |
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: Listener::DEFAULT_RULE; |
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$modifier = new RegistryModifier($registry, $this->role); |
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switch ($this->rule) { |
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case self::RULE_INCREMENT: |
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$modifier |
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->addIntegerColumn( |
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$this->column, |
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$this->field, |
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GeneratedField::BEFORE_INSERT | GeneratedField::BEFORE_UPDATE, |
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) |
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->nullable(false) |
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->defaultValue(self::DEFAULT_INT_VERSION); |
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break; |
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case self::RULE_RAND_STR: |
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case self::RULE_MICROTIME: |
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$modifier |
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->addStringColumn( |
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$this->column, |
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$this->field, |
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GeneratedField::BEFORE_INSERT | GeneratedField::BEFORE_UPDATE, |
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) |
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->nullable(false) |
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->string(self::STRING_COLUMN_LENGTH); |
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break; |
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case self::RULE_DATETIME: |
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$modifier->addDatetimeColumn( |
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$this->column, |
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$this->field, |
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GeneratedField::BEFORE_INSERT | GeneratedField::BEFORE_UPDATE, |
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); |
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break; |
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default: |
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throw new BehaviorCompilationException( |
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\sprintf( |
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'Wrong rule `%s` for the %s behavior in the `%s.%s` field.', |
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$this->rule, |
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self::class, |
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$this->role, |
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$this->field, |
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), |
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); |
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} |
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} |
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} |
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