ZenStorage class abstract
Interface for persisting query data.
Implement this to enable offline support and hydration for ZenQuery.
Example with SharedPreferences:
class SharedPrefsStorage implements ZenStorage {
@override
Future<void> write(String key, Map<String, dynamic> json) async {
final prefs = await SharedPreferences.getInstance();
await prefs.setString(key, jsonEncode(json));
}
// ... implement read and delete
}
Constructors
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
delete(
String key) → Future< void> - Delete data from storage.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
read(
String key) → Future< Map< String, dynamic> ?> - Read data from storage.
-
toString(
) → String -
A string representation of this object.
inherited
-
write(
String key, Map< String, dynamic> json) → Future<void> - Write data to storage.
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited