feat(driver-sql): honor external.columnMap on federated objects (ADR-0015)#2149
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…0015)
When a federated (external) object declares external.columnMap
({ remoteColumn -> localField }), the SQL driver now translates the query
pipeline to the physical remote columns:
- registerExternalObject inverts columnMap to localField -> remoteColumn (+ keeps
the inverse for read remap).
- WHERE (object/array/mongo forms) and ORDER BY resolve the local field to its
remote column via remoteColumn(); value coercion stays keyed by the local field.
- formatOutput renames remote-column keys back to local field names on read
(no-op when no columnMap), so coercion + callers see local names.
- write payloads are key-remapped after formatInput.
Managed objects and external objects without a columnMap are byte-for-byte
unchanged (the resolver falls back to each site's existing behavior). Adds
sql-driver-external-columnmap.test.ts (read/where/orderBy/date-coercion + managed
control). ADR-0015 §18 updated.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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📓 Docs Drift CheckThis PR changes 1 package(s): 8 hand-written doc(s) reference the affected code and may need an implementation-accuracy re-verification:
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Jun 22, 2026
…le, credentials, visibility, query completeness) (#2162) Consolidates the runtime gaps surfaced while implementing ADR-0015 federation (#2138 read path, #2149 columnMap, #2139 example+verify, #2157 visibility) into a single forward decision: one DatasourceConnectionService that auto-connects declared datasources as queryable engine drivers (no onEnable bridge), backward- compatible opt-in gating (existing managed apps unchanged), credential resolution at connect, native-analytics remote-table awareness, and columnMap/field.columnName reconciliation. Status: Proposed; decisions D1-D8 with a phased rollout. Co-authored-by: Jack Zhuang <277994282+os-zhuang@users.noreply.github.com> Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
This was referenced Jun 22, 2026
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Why
Follow-up to ADR-0015 federation (#2138/#2139). When a federated (external) object's remote table has column names that differ from the local field names, you express the mapping with
external.columnMap({ remoteColumn → localField }). The spec accepted it, but the SQL driver's query pipeline ignored it — WHERE/ORDER BY/SELECT used the local field names as physical columns, so a columnMap'd object couldn't be queried correctly.What
Scoped, additive, gated on
external.columnMapbeing present — managed objects and external objects without a columnMap are byte-for-byte unchanged.registerExternalObjectinvertscolumnMaptolocalField → remoteColumn(and keeps the inverse for read remap).remoteColumn(object, field, fallback)helper resolves the physical column, falling back to each call-site's existing resolution when there's no columnMap.formatOutputrenames remote-column keys back to local field names on read (no-op without a columnMap), so coercion and callers see local names.formatInput.Tests
sql-driver-external-columnmap.test.ts: reads return local field names from differently-named remote columns; WHERE (object/array/$gte), ORDER BY, and date-coercion all translate through the columnMap; a managed control object is unaffected. Fulldriver-sqlsuite green (189/189);sql-driver.tsreports 0 type errors. ADR-0015 §18 updated.🤖 Generated with Claude Code