feat(core): B1.1 — per-output views (multi-view hook)

[thiagoluga]

First code of Epic B1 — OSS/MIT. A single source read can now feed several outputs, each with its own filters and/or columns (a "view"), producing one file per view. The Pro workbook writer (views → sheets in one .xlsx) is B1.2.

This is the general "multi-view" model from your 2.5 clarification: at save time, several outputs with distinct filters/columns; each targets its own file here (free), or gets packed as sheets in one workbook (Pro).

API

new ReportBuilder<Sale>("sales")
    .From(source)
    .Column(v => v.Id, "Id")                                   // report default columns
    .To(Csv(), view => view.Where(v => v.Amount > 0))          // "approved" file, default columns
    .To(Csv(), view => view                                    // "rejected" file, its own columns
        .Where(v => v.Amount <= 0)
        .Column(v => v.Id, "Id").Column(v => v.Customer, "Customer"));

To(spec) (no view) is unchanged — it uses the report's filters/columns.

Pipeline change (additive, default path byte-identical)

• TypedBatchReader<T> takes one OutputProjection<T> (filters + getters) per output and projects them all in one pass; ProjectedBatch carries per-output rows + a WrittenCount (distinct source rows written to ≥1 output).
• CompiledReport gains OutputSchemas; the runner initializes each writer with its own schema and writes batch.Outputs[i] to output i.
• recordsWritten uses WrittenCount, which equals the old batch.Rows.Count when outputs share a projection — so all existing behavior is preserved.

Tests

54 green Core (+3): views filter/project independently from one read; a row in several views counts once; a view with no columns (and no report columns) is rejected. Jobs (16) and AspNetCore (10) unaffected — the single-output pipeline is byte-identical.

Docs

PLAN B1.1 ✅; the design doc + DECISIONS record the multi-view model and the resolved calls: package NeoReports.Xlsx.Pro; license Option A (QuestPDF-style / PolyForm Small Business — free < USD 1M, paid above, no enforcement); CSV-with-views rejects; multi-source (B2) = two explicit join strategies.

Next

B1.2 — the NeoReports.Xlsx.Pro package: XlsxWorkbook(...) fluent API + ClosedXML writer that packs views as sheets in one file, plus the PolyForm Small Business LICENSE.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
93.9% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud