protected function SqlContentEntityStorageSchema::deleteEntitySchemaIndexes

protected SqlContentEntityStorageSchema::deleteEntitySchemaIndexes(array $entity_schema_data, FieldStorageDefinitionInterface $storage_definition = NULL)

Deletes the specified entity schema indexes and keys.

Parameters

array $entity_schema_data: The entity schema data definition.

\Drupal\Core\Field\FieldStorageDefinitionInterface|NULL $storage_definition: (optional) If a field storage definition is specified, only indexes and keys involving its columns will be processed. Otherwise all defined entity indexes and keys will be processed.

File

core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php, line 1508

Class

SqlContentEntityStorageSchema

Defines a schema handler that supports revisionable, translatable entities.

Namespace

Drupal\Core\Entity\Sql

Code

protected function deleteEntitySchemaIndexes(array $entity_schema_data, FieldStorageDefinitionInterface $storage_definition = NULL) {
  $schema_handler = $this->database->schema();

  if ($storage_definition) {
    $table_mapping = $this->storage->getTableMapping();
    $column_names = $table_mapping->getColumnNames($storage_definition->getName());
  }

  $index_keys = [
    'indexes' => 'dropIndex',
    'unique keys' => 'dropUniqueKey',
  ];

  foreach ($entity_schema_data as $table_name => $schema) {
    foreach ($index_keys as $key => $drop_method) {
      if (!empty($schema[$key])) {
        foreach ($schema[$key] as $name => $specifier) {
          $specifier_columns = array_map(function($item) {
            return is_string($item) ? $item : reset($item);
          }, $specifier);
          if (!isset($column_names) || array_intersect($specifier_columns, $column_names)) {
            $schema_handler->{$drop_method}($table_name, $name);
          }
        }
      }
    }
  }
}