Files
the-biergarten-app/web/backend/Infrastructure/Infrastructure.Sql/SqlErrorCodes.cs
2026-08-18 16:28:25 -04:00

45 lines
2.1 KiB
C#

namespace Infrastructure.Sql;
/// <summary>
/// Custom SQL Server error numbers (50000+) that a stored procedure could use to signal
/// domain-level failures via <c>THROW</c>, for a repository to catch as
/// <see cref="Microsoft.Data.SqlClient.SqlException" /> and translate via <c>ex.Number</c> into
/// the corresponding <c>Domain.Exceptions</c> type.
/// </summary>
/// <remarks>
/// Currently unused: the schema has no stored procedures, and no repository throws or catches on
/// these numbers. Repositories instead run their own existence/concurrency checks and throw
/// <c>Domain.Exceptions</c> directly (see <c>docs/website/database.md</c> for the current
/// approach). This type is kept in case a future stored procedure reintroduces the pattern; each
/// number would
/// identify a category of error shared by every procedure that raises it, not a single call site.
/// </remarks>
public static class SqlErrorCodes
{
/// <summary>
/// A stored procedure's own input validation failed (e.g. a required parameter was <c>NULL</c>).
/// Maps to HTTP 400 Bad Request.
/// </summary>
public const int Validation = 50400;
/// <summary>
/// A stored procedure could not find a row it required, by primary key or foreign key. Maps to
/// HTTP 404 Not Found.
/// </summary>
public const int NotFound = 50404;
/// <summary>
/// A stored procedure detected a conflict: either a duplicate/already-exists row, or a stale
/// optimistic-concurrency token (row-version mismatch). Maps to HTTP 409 Conflict.
/// </summary>
public const int Conflict = 50409;
/// <summary>
/// A defensive check inside a stored procedure failed under conditions that should be
/// unreachable in normal operation (e.g. an <c>INSERT</c> that should always affect one row
/// affected zero). Left uncaught by repositories so it falls through to the generic
/// <see cref="Microsoft.Data.SqlClient.SqlException" /> handler. Maps to HTTP 500/503.
/// </summary>
public const int InternalFailure = 50500;
}