SqlContentEntityStorage::mapFromStorageRecords

protected SqlContentEntityStorage::mapFromStorageRecords(array $records, $load_from_revision = FALSE)

protected function mapFromStorageRecords(array $records, $load_from_revision = FALSE) {
  if (!$records) {
    return array();
  }

  $values = array();
  foreach ($records as $id => $record) {
    $values[$id] = array();
    // Skip the item delta and item value levels (if possible) but let the
    // field assign the value as suiting. This avoids unnecessary array
    // hierarchies and saves memory here.
    foreach ($record as $name => $value) {
      // Handle columns named [field_name]__[column_name] (e.g for field types
      // that store several properties).
      if ($field_name = strstr($name, '__', TRUE)) {
        $property_name = substr($name, strpos($name, '__') + 2);
        $values[$id][$field_name][LanguageInterface::LANGCODE_DEFAULT][$property_name] = $value;
      }
      else {
        // Handle columns named directly after the field (e.g if the field
        // type only stores one property).
        $values[$id][$name][LanguageInterface::LANGCODE_DEFAULT] = $value;
      }
    }
  }

  // Initialize translations array.
  $translations = array_fill_keys(array_keys($values), array());

  // Load values from shared and dedicated tables.
  $this->loadFromSharedTables($values, $translations);
  $this->loadFromDedicatedTables($values, $load_from_revision);

  $entities = array();
  foreach ($values as $id => $entity_values) {
    $bundle = $this->bundleKey ? $entity_values[$this->bundleKey][LanguageInterface::LANGCODE_DEFAULT] : FALSE;
    // Turn the record into an entity class.
    $entities[$id] = new $this->entityClass($entity_values, $this->entityTypeId, $bundle, array_keys($translations[$id]));
  }

  return $entities;
}