function FieldStorageConfig::getSchema

File

core/modules/field/src/Entity/FieldStorageConfig.php, line 452

Class

FieldStorageConfig

Defines the Field storage configuration entity.

Namespace

Code

public function getSchema() {
  if (!isset($this->schema)) {
    // Get the schema from the field item class.
    $class = $this->getFieldItemClass();
    $schema = $class::schema($this);
    // Fill in default values for optional entries.
    $schema += [
      'columns' => [],
      'unique keys' => [],
      'indexes' => [],
      'foreign keys' => [],
    ];
    // Merge custom indexes with those specified by the field type. Custom
    // indexes prevail.
    $schema['indexes'] = $this->indexes + $schema['indexes'];
    $this->schema = $schema;
  }
  return $this->schema;
}