Joseph Doherty
8c6d6aff6a
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
57 lines
2.5 KiB
C#
57 lines
2.5 KiB
C#
using System.Data;
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using Microsoft.Data.SqlClient.Server;
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using ZB.MOM.WW.OtOpcUa.Driver.Historian.Sql.Common;
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namespace ZB.MOM.WW.OtOpcUa.Driver.Historian.SqlServer;
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/// <summary>
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/// The <c>SqlDataRecord</c> TVP builders. The HistorianValue ⇄ column mapping itself is
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/// <see cref="SampleColumnMapper"/> (shared with the other SQL backends).
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/// </summary>
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internal static class SampleRowMapper
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{
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private static readonly SqlMetaData[] SampleMeta =
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[
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new("SourceTimeUtc", SqlDbType.DateTime2, 0, 7),
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new("ValueKind", SqlDbType.TinyInt),
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new("NumValue", SqlDbType.Float),
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new("IntValue", SqlDbType.BigInt),
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new("StrValue", SqlDbType.NVarChar, SqlMetaData.Max),
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new("StatusCode", SqlDbType.Int),
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];
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private static readonly SqlMetaData[] TimeMeta = [new("T", SqlDbType.DateTime2, 0, 7)];
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/// <summary>Builds <c>SampleRow</c> TVP records (datetime2(7); never a DataTable). Lazy; enumerate once.</summary>
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/// <param name="rows">Samples; must be time-unique (the TVP has a PK on time) and non-empty when bound.</param>
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/// <returns>Records for <see cref="SqlHistorianConnection.AddStructured"/>.</returns>
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public static IEnumerable<SqlDataRecord> ToSampleRecords(IEnumerable<HistorianSampleRow> rows)
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{
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foreach (var r in rows)
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{
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var c = SampleColumnMapper.ToColumns(r.Value);
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var rec = new SqlDataRecord(SampleMeta);
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rec.SetDateTime(0, DateTime.SpecifyKind(r.TimeUtc, DateTimeKind.Utc));
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rec.SetByte(1, c.ValueKind);
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if (c.NumValue is { } n) rec.SetDouble(2, n); else rec.SetDBNull(2);
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if (c.IntValue is { } i) rec.SetInt64(3, i); else rec.SetDBNull(3);
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if (c.StrValue is { } s) rec.SetString(4, s); else rec.SetDBNull(4);
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rec.SetInt32(5, SampleColumnMapper.ToDbStatus(r.StatusCode));
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yield return rec;
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}
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}
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/// <summary>Builds <c>TimeRow</c> TVP records (datetime2(7)). Lazy; enumerate once.</summary>
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/// <param name="timesUtc">Distinct UTC times; non-empty when bound.</param>
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/// <returns>Records for <see cref="SqlHistorianConnection.AddStructured"/>.</returns>
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public static IEnumerable<SqlDataRecord> ToTimeRecords(IEnumerable<DateTime> timesUtc)
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{
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foreach (var t in timesUtc)
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{
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var rec = new SqlDataRecord(TimeMeta);
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rec.SetDateTime(0, DateTime.SpecifyKind(t, DateTimeKind.Utc));
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yield return rec;
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}
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}
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}
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