Fix FetchForWriting with natural keys without explicit projection registration#4213
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jeremydmiller merged 2 commits intomasterfrom Mar 28, 2026
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…istration When using FetchForWriting<TDoc, TId> with a natural key type and no explicit Projections.Snapshot<TDoc>(Inline) call, Marten now: 1. Auto-registers the snapshot projection on first FetchForWriting call 2. Resets schema existence checks so the natural key table gets created 3. At startup, scans for [NaturalKeyAggregate] attributes emitted by the JasperFx.Events source generator to pre-register projections This fixes the Npgsql.PostgresException: '42P01: relation "public.mt_natural_key_..." does not exist' error reported in #4199. Closes #4199 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- JasperFx 1.21.4 → 1.21.5 - JasperFx.Events 1.24.1 → 1.24.2 (NaturalKeyAggregateAttribute) - JasperFx.Events.SourceGenerator 1.3.0 → 1.4.0 (natural key discovery) - Microsoft.Extensions.Hosting.Abstractions 8.0.0 → 8.0.1 (transitive dep) - Microsoft.Extensions.Diagnostics.HealthChecks 8.0.0 → 8.0.1 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This was referenced Mar 30, 2026
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Summary
Npgsql.PostgresException: '42P01: relation "public.mt_natural_key_..." does not exist'when usingFetchForWriting<TDoc, TNaturalKey>()without explicitly registeringProjections.Snapshot<TDoc>(Inline)[NaturalKeyAggregate]attributes emitted by JasperFx.Events.SourceGenerator 1.4.0 to pre-register projections at startupCloses #4199
Depends on JasperFx/jasperfx#172
Test plan
nuke compile🤖 Generated with Claude Code