Enum Domain 

#[non_exhaustive]
#[repr(u16)]
pub enum Domain {
    General = 0,
    GraphAnalytics = 1,
    StatisticalML = 2,
    Compliance = 3,
    RiskManagement = 4,
    OrderMatching = 5,
    MarketData = 6,
    Settlement = 7,
    Accounting = 8,
    NetworkAnalysis = 9,
    FraudDetection = 10,
    TimeSeries = 11,
    Simulation = 12,
    Banking = 13,
    BehavioralAnalytics = 14,
    ProcessIntelligence = 15,
    Clearing = 16,
    TreasuryManagement = 17,
    PaymentProcessing = 18,
    FinancialAudit = 19,
    Custom = 100,
}

Business domain classification for kernel messages.

Each domain has an assigned type ID range to prevent collisions:

• General: 0-99
• GraphAnalytics: 100-199
• StatisticalML: 200-299
• Compliance: 300-399
• RiskManagement: 400-499
• OrderMatching: 500-599
• MarketData: 600-699
• Settlement: 700-799
• Accounting: 800-899
• NetworkAnalysis: 900-999
• FraudDetection: 1000-1099
• TimeSeries: 1100-1199
• Simulation: 1200-1299
• Banking: 1300-1399
• BehavioralAnalytics: 1400-1499
• ProcessIntelligence: 1500-1599
• Clearing: 1600-1699
• TreasuryManagement: 1700-1799
• PaymentProcessing: 1800-1899
• FinancialAudit: 1900-1999
• Custom: 10000+

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

General = 0

General-purpose messages (type IDs: 0-99).

GraphAnalytics = 1

Graph analytics messages (type IDs: 100-199). Includes: PageRank, community detection, centrality measures.

StatisticalML = 2

Statistical/ML messages (type IDs: 200-299). Includes: regression, clustering, classification.

Compliance = 3

Compliance/regulatory messages (type IDs: 300-399). Includes: AML checks, KYC validation, regulatory reporting.

RiskManagement = 4

Risk management messages (type IDs: 400-499). Includes: VaR calculation, stress testing, exposure analysis.

OrderMatching = 5

Order matching messages (type IDs: 500-599). Includes: order submission, matching, cancellation.

MarketData = 6

Market data messages (type IDs: 600-699). Includes: quotes, trades, order book updates.

Settlement = 7

Settlement messages (type IDs: 700-799). Includes: trade settlement, netting, reconciliation.

Accounting = 8

Accounting messages (type IDs: 800-899). Includes: journal entries, ledger updates, trial balance.

NetworkAnalysis = 9

Network analysis messages (type IDs: 900-999). Includes: transaction flow, counterparty analysis.

FraudDetection = 10

Fraud detection messages (type IDs: 1000-1099). Includes: anomaly detection, pattern matching.

TimeSeries = 11

Time series messages (type IDs: 1100-1199). Includes: forecasting, trend analysis, seasonality.

Simulation = 12

Simulation messages (type IDs: 1200-1299). Includes: Monte Carlo, scenario analysis, stress testing.

Banking = 13

Banking messages (type IDs: 1300-1399). Includes: account management, transfers, statements.

BehavioralAnalytics = 14

Behavioral analytics messages (type IDs: 1400-1499). Includes: user behavior, clickstream, session analysis.

ProcessIntelligence = 15

Process intelligence messages (type IDs: 1500-1599). Includes: process mining, DFG, conformance checking.

Clearing = 16

Clearing messages (type IDs: 1600-1699). Includes: CCP clearing, margin calculation, position netting.

TreasuryManagement = 17

Treasury management messages (type IDs: 1700-1799). Includes: cash management, liquidity, FX hedging.

PaymentProcessing = 18

Payment processing messages (type IDs: 1800-1899). Includes: payment initiation, routing, confirmation.

FinancialAudit = 19

Financial audit messages (type IDs: 1900-1999). Includes: audit trails, evidence gathering, compliance verification.

Custom = 100

Custom domain (type IDs: 10000+). For application-specific domains not covered by predefined ones.

Implementations

impl Domain

pub const RANGE_SIZE: u64 = 100u64

Number of type IDs reserved per domain (except Custom).

pub const CUSTOM_BASE: u64 = 10_000u64

Base type ID for custom domains.

pub const fn base_type_id(&self) -> u64

Get the base type ID for this domain.

Type IDs for messages in this domain should be: base_type_id() + offset where offset is 0-99.

Example

use ringkernel_core::domain::Domain;

assert_eq!(Domain::General.base_type_id(), 0);
assert_eq!(Domain::OrderMatching.base_type_id(), 500);
assert_eq!(Domain::Custom.base_type_id(), 10000);

pub const fn max_type_id(&self) -> u64

Get the maximum type ID for this domain.

Example

use ringkernel_core::domain::Domain;

assert_eq!(Domain::General.max_type_id(), 99);
assert_eq!(Domain::OrderMatching.max_type_id(), 599);

pub const fn contains_type_id(&self, type_id: u64) -> bool

Check if a type ID is within this domain’s range.

Example

use ringkernel_core::domain::Domain;

assert!(Domain::OrderMatching.contains_type_id(500));
assert!(Domain::OrderMatching.contains_type_id(599));
assert!(!Domain::OrderMatching.contains_type_id(600));

pub const fn from_type_id(type_id: u64) -> Option<Self>

Determine which domain a type ID belongs to.

Returns None if the type ID doesn’t match any standard domain.

Example

use ringkernel_core::domain::Domain;

assert_eq!(Domain::from_type_id(501), Some(Domain::OrderMatching));
assert_eq!(Domain::from_type_id(10500), Some(Domain::Custom));

pub fn from_str(s: &str) -> Option<Self>

Parse domain from string (case-insensitive).

Supports various naming conventions:

• PascalCase: “OrderMatching”
• snake_case: “order_matching”
• lowercase: “ordermatching”
• Short forms: “risk”, “ml”, “sim”

Example

use ringkernel_core::domain::Domain;

assert_eq!(Domain::from_str("OrderMatching"), Some(Domain::OrderMatching));
assert_eq!(Domain::from_str("order_matching"), Some(Domain::OrderMatching));
assert_eq!(Domain::from_str("risk"), Some(Domain::RiskManagement));
assert_eq!(Domain::from_str("unknown"), None);

pub const fn as_str(&self) -> &'static str

Get the domain name as a static string.

Returns the PascalCase canonical name.

pub const fn all_standard() -> &'static [Domain]

Get all standard domains (excluding Custom).

Trait Implementations

impl Clone for Domain

fn clone(&self) -> Domain

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Domain

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Domain

fn default() -> Domain

Returns the “default value” for a type.

impl Display for Domain

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl FromStr for Domain

type Err = DomainParseError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for Domain

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Domain

fn eq(&self, other: &Domain) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Domain

impl Eq for Domain

impl StructuralPartialEq for Domain