python_cqrs_core.command¶

Command interfaces for CQRS pattern.

Extracted from GridFlow backend/src/apps/token_generator/application/common/ports_interfaces/command.py

Attributes¶

`TCommand`
`TResult`

Classes¶

`ICommand`	Base command interface (write operations).
`ICommandHandler`	Command handler interface.

Module Contents¶

python_cqrs_core.command.TCommand¶

python_cqrs_core.command.TResult¶

class python_cqrs_core.command.ICommand¶

Bases: abc.ABC

Base command interface (write operations).

Commands modify state and may return a result. Use this as a marker interface for all commands.

Example:

>>> from pydantic import BaseModel
>>>
>>> class CreateUserCommand(BaseModel, ICommand):
...     name: str
...     email: str

class python_cqrs_core.command.ICommandHandler¶

Bases: abc.ABC, Generic[TCommand, TResult]

Command handler interface.

Handles a specific command type and returns a result.

Example:

>>> class CreateUserHandler(ICommandHandler[CreateUserCommand, User]):
...     async def handle(self, command: CreateUserCommand) -> User:
...         # Create user logic
...         return user

abstract handle(command: TCommand) → TResult¶

Async:

Handle the command.

Args:: command: Command to handle
Returns:: Command result