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