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author | Chris Cannam |
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date | Wed, 28 Aug 2019 13:14:47 +0100 |
parents | af1871eacc83 |
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<?php namespace Drupal\Core\Entity; /** * Defines an interface for entity change timestamp tracking. * * This data may be useful for more precise cache invalidation (especially * on the client side) and concurrent editing locking. * * The entity system automatically adds in the 'EntityChanged' constraint for * entity types implementing this interface in order to disallow concurrent * editing. * * @see \Drupal\Core\Entity\Plugin\Validation\Constraint\EntityChangedConstraint */ interface EntityChangedInterface extends EntityInterface { /** * Gets the timestamp of the last entity change for the current translation. * * @return int * The timestamp of the last entity save operation. */ public function getChangedTime(); /** * Sets the timestamp of the last entity change for the current translation. * * @param int $timestamp * The timestamp of the last entity save operation. * * @return $this */ public function setChangedTime($timestamp); /** * Gets the timestamp of the last entity change across all translations. * * This method will return the highest timestamp across all translations. To * check that no translation is older than in another version of the entity * (e.g. to avoid overwriting newer translations with old data), compare each * translation to the other version individually. * * @return int * The timestamp of the last entity save operation across all * translations. */ public function getChangedTimeAcrossTranslations(); }