Initializes common information for a revision data table.

Parameters

\Drupal\Core\Entity\ContentEntityTypeInterface $entity_type: The entity type.

Return value

array A partial schema array for the revision data table.

1 call to SqlContentEntityStorageSchema::initializeRevisionDataTable()

SqlContentEntityStorageSchema::getEntitySchema in core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php

Gets the entity schema for the specified entity type.

File

core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php, line 1408

Class

SqlContentEntityStorageSchema

Defines a schema handler that supports revisionable, translatable entities.

Namespace

Drupal\Core\Entity\Sql

Code

protected function initializeRevisionDataTable(ContentEntityTypeInterface $entity_type) {
  $entity_type_id = $entity_type->id();
  $id_key = $entity_type->getKey('id');
  $revision_key = $entity_type->getKey('revision');
  $schema = [
    'description' => "The revision data table for {$entity_type_id} entities.",
    'primary key' => [
      $revision_key,
      $entity_type->getKey('langcode'),
    ],
    'indexes' => [
      $entity_type_id . '__id__default_langcode__langcode' => [
        $id_key,
        $entity_type->getKey('default_langcode'),
        $entity_type->getKey('langcode'),
      ],
    ],
    'foreign keys' => [
      $entity_type_id => [
        'table' => $this->storage
          ->getBaseTable(),
        'columns' => [
          $id_key => $id_key,
        ],
      ],
      $entity_type_id . '__revision' => [
        'table' => $this->storage
          ->getRevisionTable(),
        'columns' => [
          $revision_key => $revision_key,
        ],
      ],
    ],
  ];
  $this->addTableDefaults($schema);
  return $schema;
}

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