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Q2 2026 — System.Text.Json migration + quarterly work - #5
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SAM-BIM core migrated from Newtonsoft.Json to System.Text.Json.Nodes. - Replace each csproj's Newtonsoft package reference with System.Text.Json 10.0.8 - MultitaskerInput, MultitaskerOutput, MultitaskerVariable, Script: FromJObject/ToJObject -> FromJsonObject/ToJsonObject; JObject -> JsonObject; .Value<T>(key) -> indexer + GetValue<T>(); .Value<object>(key) -> indexer + Deserialize<object>() - Resource scripts (files/resources/Core/Multitasker/scripts/*.cs) are Roslyn-compiled at runtime against the consumer's SAM.Core, so they need the same migration: drop unused 'using Newtonsoft.Json' and rewrite TestScript.cs's JsonConvert.DeserializeObject -> JsonNode.Parse Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
During the SAM-BIM Newtonsoft.Json -> System.Text.Json migration the quarterly sow/2026-Q2 branch carries the binary-breaking change. CI needs to consume the migrated SAM (and any sibling dep) from sow/2026-Q2, not from master, until the quarter-end merge. - Add "sow/2026-Q2" to push/pull_request branch triggers - For each dep clone, ls-remote sow/2026-Q2 and prefer it when present; fall back to default branch (e.g. master) otherwise. After the quarter merges back to master, this fallback naturally restores prior behaviour. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Refines the previous workflow patch so CI on the migration PR can succeed before anything has been merged. Each dep repo is cloned from: 1. github.head_ref (feature/remove-newtonsoft on these PRs) - has the migration right now on every dep 2. sow/2026-Q2 - source of truth after these PRs merge 3. default branch - source of truth after quarter-end merge Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
The SPDX-check workflow requires the top 6 lines of every changed .cs file to contain both: // SPDX-License-Identifier: LGPL-3.0-or-later // Copyright (c) 2020-2026 Michal Dengusiak & Jakub Ziolkowski and contributors (with an en-dash between the years). Migration commits modified existing files without preserving the header. Prepend the two lines now. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Remove Newtonsoft.Json — migrate to System.Text.Json.Nodes
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| if(jObject.ContainsKey("Value")) | ||
| { | ||
| object value = jObject.Value<object>("Value"); | ||
| object value = jObject["Value"]?.Deserialize<object>(); |
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Value
Using jObject["Value"]?.Deserialize<object>() changes the runtime type of JSON primitives to JsonElement instead of boxed primitives, so the subsequent TryConvert branches can fail and this.value is left as a JsonElement. This breaks round-tripping and downstream consumers that expect bool/int/double/string (for example when reading previously serialized multitasker variables), whereas the previous JObject.Value<object>("Value") path returned directly usable primitive objects.
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Aligns the repo with the SAM-BIM workspace-wide pin to the LTS-aligned System.Text.Json 8.0.5, replacing the previously pinned 10.0.8 preview.
Pin System.Text.Json to 8.0.5
* fix: pin AssemblyVersion/FileVersion to 1.0.0.0 (drop 1.0.* wildcard) Eliminates CS1607 warnings and restores deterministic builds. Aligns with the workspace's existing fixed-version files. Scope: AssemblyInfo.cs + .csproj version attributes only. The // commented-out template example is left intact for documentation. * fix: add SPDX + copyright header to modified AssemblyInfo.cs and refresh .csproj <Copyright> Satisfies the spdx-check workflow which requires every changed .cs file to declare the LGPL-3.0-or-later SPDX identifier and the 2020-2026 attribution in its first 20 lines. Also updates the stale '<Copyright>Copyright (c) 2020</Copyright>' line in .csproj files to match the SPDX header style.
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* build: Directory.Build.props for centralised SAMVersion stamping Mirrors SAM-BIM/SAM#7. Stage 2 of the AssemblyVersion versioning migration. * fix: replace literal u{2013} escape with actual en-dash in SPDX header PowerShell 5.1 doesn't support backtick-u escape sequences; the apply-stage2.ps1 script leaked them as literal text in 'Copyright (c) 2020u{2013}2026'. * fix: relax SAMVersion.g.cs Target condition to != 'true' Codex P1 on SAM_LadybugTools#4: classic (non-SDK) csprojs don't set GenerateAssemblyInfo at all, so the previous '== false' condition skipped them. Switching to '!= true' catches both GenerateAssemblyInfo=false (SDK projects with legacy AssemblyInfo.cs) AND empty (classic projects). * ci: Codex P2 fixes — four-part SAMVersion, prefer head_ref for sow PRs - Append .0 so SAMVersion is 4-part (AssemblyFileVersion expects 4 parts). - Prefer github.head_ref when it matches sow/yyyy-Qx (release-promotion PRs). - Mirrors SAM sow/2026-Q2 6d87d98e.
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Mirrors SAM sow/2026-Q2. Adds AssemblyInformationalVersion attribute generation to Path D's SAMVersion.g.cs Target — covers Grasshopper / Tas-bridge assemblies that have GenerateAssemblyInfo=false, so they also get the CI commit SHA stamp in their ProductVersion field. SDK projects pick up InformationalVersion via PropertyGroup auto-gen as before. Local dev builds unchanged.
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| # Current sow branch: base_ref on PR events, ref_name on push events. | ||
| $sowRef = if ($baseRef -match '^sow/') { $baseRef } elseif ($refName -match '^sow/') { $refName } else { '' } | ||
| if ($sowRef -and $sowRef -ne $headRef) { $candidates += $sowRef } | ||
| $candidates += 'sow/2026-Q2' |
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The dependency-clone loop always adds sow/2026-Q2 to $candidates, so on main/master pushes (where head_ref/base_ref are empty and ref_name is not a sow branch) CI will preferentially clone dependencies from that quarterly branch whenever it exists instead of the default branch. This makes non-sow builds compile/test against the wrong dependency revisions and can mask or create regressions unrelated to the target branch.
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Mirrors SAM sow/2026-Q2. Adds AssemblyInformationalVersion attribute generation to Path D's SAMVersion.g.cs Target — covers Grasshopper / Tas-bridge assemblies that have GenerateAssemblyInfo=false, so they also get the CI commit SHA stamp in their ProductVersion field. SDK projects pick up InformationalVersion via PropertyGroup auto-gen as before. Local dev builds unchanged.
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Summary
Quarterly Q2 2026 work from the SAM-BIM fork merging back into the upstream.
Includes the Newtonsoft.Json → System.Text.Json.Nodes migration of the
entire SAM-BIM stack (per-repo PRs already merged into SAM-BIM's
sow/2026-Q2).Highlights of this quarter
IJSAMObjectimplementations migrated fromJObject/JArray/JTokentoJsonObject/JsonArray/JsonNode.FromJObject/ToJObjectrenamed toFromJsonObject/ToJsonObject.System.Text.Json10.0.8 replacesNewtonsoft.Json13.0.3 in every csproj(except SAM_Revit which keeps Newtonsoft loadable for Revit's runtime).
Log identity loss, SearchWrapper missing type discriminator, RelationCollection
wrong-jObject-passed).
Verification
BuildAlls_v3 RestoreCleanRebuildagainst the merged sow/2026-Q2 chain:0 errors, 144 artifacts.
Test plan
IJSAMObjectAPI renamemasterfrom upstream🤖 Generated with Claude Code