SqlContentEntityStorageSchema::getFieldUniqueKeys

protected SqlContentEntityStorageSchema::getFieldUniqueKeys($field_name, array $field_schema, array $column_mapping)

Gets a unique key schema array for a given field.

Parameters

string $field_name: The name of the field.

array $field_schema: The schema of the field.

string[] $column_mapping: A mapping of field column names to database column names.

Return value

array The schema definition for the unique keys.

File

core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php, line 657

Class

SqlContentEntityStorageSchema

Defines a schema handler that supports revisionable, translatable entities.

Namespace

Drupal\Core\Entity\Sql

Code