load method

@override FutureOr<Map<String, dynamic>?> load(Entity entity, Iterable<String>? fields, AccessOption? option)

Loads the data of the given OID. *

• • fields - a collection of fields to load. If null, it means all.
• If the plugin doesn't support partial load, it can ignore fields.
• Note: it shall return a Future carrying null if not found.
• • option - an option for loading the entity.
• It is the option passed from load and loadIfAny.
• It can be application specific.
• You can ignore it if not supported.
• For SQL, it is better to supported null, forShare and forUpdate.

Implementation

@override
FutureOr<Map<String, dynamic>?> load(Entity entity, Iterable<String>? fields,
    AccessOption? option) {
  final data = _load(entity.oid);
  if (data != null) {
    assert(data[fdOtype] == entity.otype);
    _cache.put(entity); //update cache
  }
  return Future.value(data);
}