Trait cqrs_es2::ICommand

pub trait ICommand: Debug + PartialEq + Clone + Sync + Send { }

An ICommand represents business API call.

The name of an ICommand should always be in the present tense, e.g.,

• ChangeEmailAddress
• AddDependency

To simplify serialization, a command should be an enum, and each element should have a payload. By convention, the payload has the same name as the element, and elements that do not require additional information use an empty payload.

Though the ICommand trait only has a single function, the commands must also derive a number of standard traits.

• Clone - events may be cloned throughout the framework
• Debug and PartialEq - needed for effective testing

Examples

use std::fmt::Debug;

use cqrs_es2::ICommand;

#[derive(Debug, PartialEq, Clone)]
pub enum CustomerCommand {
    AddCustomerName(AddCustomerName),
    UpdateEmail(UpdateEmail),
}

#[derive(Debug, PartialEq, Clone)]
pub struct AddCustomerName {
    changed_name: String,
}

#[derive(Debug, PartialEq, Clone)]
pub struct UpdateEmail {
    new_email: String,
}

impl ICommand for CustomerCommand {};

Implementors