cqrs library

A library for convenient communication with CQRS-compatible backends, using queries and commands.

Example:

final apiUri = Uri.parse('https://flowers.garden/api/');

final cqrs = Cqrs(
  loginClient,
  apiUri,
);

// Fetching first page of flowers
final flowers = await cqrs.get(AllFlowers()..page = 1);

// Adding a new flower
final result = await cqrs.run(AddFlower()
  ..name = 'Daisy'
  ..pretty = true);

print(result.success); // true

See also:

• https://github.com/leancodepl/corelibrary
• https://www.nuget.org/packages/LeanCode.ContractsGenerator/ - code generation tool for easy contracts transpilation from C# to Dart and TypeScript.

Classes

Command

Command carrying data related to performing a certain action on the backend.

CommandResult

The result of running a Command.

Cqrs

Class used for communicating with the backend via queries and commands.

CqrsMethod

Base class for contracts that can be serialized and sent to the backend.

Operation<T>

Operation describing a criteria for a query, a command, and the results it returns.

Query<T>

Query describing a criteria for a query and the results it returns.

ValidationError

A validation error.

Exceptions / Errors

CqrsException

Usually thrown by Cqrs.get or Cqrs.run.