DP44/enriched-qwen3-coder-next/Common/DTS.CommonCore/Enums/Channels.md

source_files, generated_at, model, schema_version, sha256

source_files	generated_at	model	schema_version	sha256
Common/DTS.CommonCore/Enums/Channels/ChannelCodeType.cs	2026-04-16T02:44:43.138694+00:00	Qwen/Qwen3-Coder-Next-FP8	1	de8650eabd4f19a6

Channels

Purpose

This module defines shared enumerations and constants related to channel code types within the DTS system. It standardizes the representation and validation of channel codes—specifically distinguishing between standardized ISO 13499-compliant codes and custom user-defined codes—ensuring consistency across modules that handle channel identification and data exchange.

---

Public Interface

All members are defined in the nested ChannelCodeType enum and constant fields inside the ChannelEnumsAndConstants class:

• ChannelEnumsAndConstants.ChannelCodeType
  Type: enum
  Values:

  • ISO — Represents an ISO 13499-compliant channel code.
  • User — Represents a user-defined channel code.

• ChannelEnumsAndConstants.IsoCodeTypeString
  Type: const string
  Value: "ISO 13499"
  Purpose: Human-readable identifier for the ISO channel code type; likely used for serialization, logging, or UI display.

• ChannelEnumsAndConstants.UserCodeTypeString
  Type: const string
  Value: "User"
  Purpose: Human-readable identifier for the user-defined channel code type.

• ChannelEnumsAndConstants.ISO_CODE_LENGTH
  Type: const int
  Value: 16
  Purpose: Expected fixed length (in characters) of an ISO-compliant channel code string.

• ChannelEnumsAndConstants.USER_CODE_LENGTH
  Type: const int
  Value: 50
  Purpose: Maximum allowed length (in characters) of a user-defined channel code string.

---

Invariants

• A channel code string of type ISO must be exactly 16 characters long (ISO_CODE_LENGTH).
• A channel code string of type User must not exceed 50 characters (USER_CODE_LENGTH).
• The enum ChannelCodeType has only two valid values: ISO and User. No other states are defined.
• The string constants IsoCodeTypeString and UserCodeTypeString are fixed and must not be modified at runtime.

---

Dependencies

• Internal: Depends only on core .NET types (string, int, enum). No external NuGet or third-party dependencies.
• Consumers: Likely referenced by modules handling channel configuration, message parsing, or data validation (e.g., serialization/deserialization logic, UI components, or database mapping layers). The namespace DTS.Common.Enums.Channels suggests it is part of a shared DTS.CommonCore library used across multiple components.

---

Gotchas

• The ChannelCodeType enum is defined inside a class (ChannelEnumsAndConstants) rather than as a top-level type—this is unconventional for enums and may cause confusion (e.g., ChannelEnumsAndConstants.ChannelCodeType vs. ChannelCodeType).
• No validation logic is provided in this module; consumers must enforce length constraints (ISO_CODE_LENGTH, USER_CODE_LENGTH) themselves.
• The IsoCodeTypeString and UserCodeTypeString values are hardcoded strings; mismatched usage (e.g., "ISO" instead of "ISO 13499") could cause interoperability issues if external systems expect exact string matches.
• No documentation is provided on how ChannelCodeType maps to actual channel code strings (e.g., encoding scheme for ISO codes).