Joseph Doherty
10b83d69c5
The list loaded every script entity including SourceCode to render names and
hashes. ScriptListQueries projects {ScriptId, Name, Language, SourceHash} for
the list and fetches one script's source when its Source dialog opens, with a
generation guard against a superseded open.
Refs #745
Claude-Session: https://claude.ai/code/session_01Ub9hGmYLQvn9XETzw7CMsT
42 lines
2.2 KiB
C#
42 lines
2.2 KiB
C#
using Microsoft.EntityFrameworkCore;
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using ZB.MOM.WW.OtOpcUa.Configuration;
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namespace ZB.MOM.WW.OtOpcUa.AdminUI.ScriptList;
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/// <summary>One row of the <c>/scripts</c> list: everything the list renders, and nothing else.</summary>
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/// <param name="ScriptId">The script's logical id.</param>
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/// <param name="Name">The authored display name.</param>
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/// <param name="Language">The script language (e.g. <c>CSharp</c>).</param>
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/// <param name="SourceHash">The source hash shown abbreviated on the row.</param>
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public sealed record ScriptListRow(string ScriptId, string Name, string Language, string SourceHash);
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/// <summary>
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/// Queries behind the <c>/scripts</c> page. The list is a projection that leaves out
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/// <c>SourceCode</c> (R04 P8): loading every script's full source to render names and hashes made
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/// the page cost proportional to the total size of every script in the fleet. The source is fetched
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/// on demand, for one script, when its "Source" dialog opens.
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/// </summary>
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public static class ScriptListQueries
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{
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/// <summary>Loads the list rows, ordered by name, without any script's source.</summary>
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/// <param name="db">The config DB context.</param>
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/// <param name="ct">Cancellation token.</param>
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/// <returns>The list rows.</returns>
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public static Task<List<ScriptListRow>> LoadRowsAsync(OtOpcUaConfigDbContext db, CancellationToken ct = default) =>
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db.Scripts.AsNoTracking()
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.OrderBy(s => s.Name)
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.Select(s => new ScriptListRow(s.ScriptId, s.Name, s.Language, s.SourceHash))
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.ToListAsync(ct);
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/// <summary>Loads one script's source, or null when the script no longer exists.</summary>
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/// <param name="db">The config DB context.</param>
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/// <param name="scriptId">The script's logical id.</param>
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/// <param name="ct">Cancellation token.</param>
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/// <returns>The source code, or null.</returns>
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public static Task<string?> LoadSourceAsync(OtOpcUaConfigDbContext db, string scriptId, CancellationToken ct = default) =>
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db.Scripts.AsNoTracking()
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.Where(s => s.ScriptId == scriptId)
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.Select(s => (string?)s.SourceCode)
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.FirstOrDefaultAsync(ct);
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}
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