Files
lmxopcua/src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.Historian.Sql.Common/HistoricalEventRows.cs
T
Joseph Doherty 8c6d6aff6a refactor(historian): extract Driver.Historian.Sql.Common from the SQL Server backend (no behaviour change) (1a)
Moves the database-independent logic of the SQL Server historian backend into a new
shared library for the upcoming QuestDB backend (#666): status codes and bits, value/column
mapping, StoredSample + quality clamp, the AtTime and aggregate evaluators, BucketPlan,
LiveWritePreparer and HistoryUpdatePlanner (both with a resolutionTicks parameter, default 1),
tag-name rules, the bootstrap failure cache, health counters, alarm event ids, the event
continuation and severity clamp. The SQL Server backend now calls it; its T-SQL, TVP
builders, connection, bootstrapper and catalog stay.

Tests: StatusCodeOracleTests, ValueWriterPrepareTests, the column half of SampleRowMapperTests
and ProcessedReadTests.Every_enum_member_is_either_served_or_refused move to the new
Sql.Common.Tests under the same names. SqlServer integration tests get mechanical renames
only. Test-name set across the three projects is identical to the baseline (160 tests).

Claude-Session: https://claude.ai/code/session_01Ef2ozxS7QPanGT8uoATbTe
2026-10-11 01:26:49 -04:00

11 lines
523 B
C#

namespace ZB.MOM.WW.OtOpcUa.Driver.Historian.Sql.Common;
/// <summary>Helpers for turning stored event rows into <c>HistoricalEvent</c>s.</summary>
public static class HistoricalEventRows
{
/// <summary>Clamps a stored severity into the <see cref="ushort"/> range the event carries.</summary>
/// <param name="severity">Stored severity.</param>
/// <returns>The severity clamped to 0..65535.</returns>
public static ushort ClampSeverity(int severity) => (ushort)Math.Clamp(severity, 0, ushort.MaxValue);
}