pjson_rs/application/
mod.rs

1//! Application layer - Use cases and orchestration
2//!
3//! Implements CQRS pattern with separate command and query handlers.
4//! Orchestrates domain logic and infrastructure concerns.
5
6pub mod commands;
7pub mod dto;
8pub mod handlers;
9pub mod queries;
10pub mod shared;
11
12pub use commands::*;
13pub use queries::*;
14pub use shared::AdjustmentUrgency;
15
16/// Application Result type
17pub type ApplicationResult<T> = Result<T, ApplicationError>;
18
19/// Application-specific errors
20#[derive(Debug, thiserror::Error)]
21pub enum ApplicationError {
22    /// Wraps a domain-layer error that bubbled up to the application boundary.
23    #[error("Domain error: {0}")]
24    Domain(#[from] crate::domain::DomainError),
25
26    /// Input failed validation before any domain logic ran.
27    #[error("Validation error: {0}")]
28    Validation(String),
29
30    /// Caller is not authorized to perform the requested operation.
31    #[error("Authorization error: {0}")]
32    Authorization(String),
33
34    /// A concurrent operation conflicted with the current request.
35    #[error("Concurrency error: {0}")]
36    Concurrency(String),
37
38    /// Requested entity does not exist.
39    #[error("Not found: {0}")]
40    NotFound(String),
41
42    /// Operation conflicted with the current state of the resource.
43    #[error("Conflict: {0}")]
44    Conflict(String),
45
46    /// Generic application-layer logic error not covered by other variants.
47    #[error("Application logic error: {0}")]
48    Logic(String),
49}
pjson_rs/application/mod.rs

pjson_rs/application/
mod.rs
