Changelog

May 2, 2026 · View on GitHub

All notable changes to dbfy. Format loosely follows Keep a Changelog; versioning is SemVer.

[0.4.1] — 2026-05-02

Hardening release. No API changes.

Added — testing

  • Postgres integration tests against a real postgres:11-alpine container via testcontainers-modules (5 cases — pushdown, count(*), JOIN, LIMIT, streaming). Gated #[ignore]; run via .github/workflows/integration.yml.
  • LDAP integration tests against bitnami/openldap:2.6 (5 cases — simple bind, eq pushdown, IN-list, __dn__ synthetic column, ORDER BY + LIMIT).
  • Parquet TPC-H-lite integration test (4 cases on a 5 000-row, 2-row-group synthetic dataset).
  • CI workflow integration.yml matrix on ubuntu-latest with pre-pulled images.

Added — showcases

Every showcase doubles as an integration test via assertion validators in run.sh.

  • examples/auth-audit/ — LDAP × Postgres × syslog. Killer query: per-user audit_count vs syslog_count gap. Catches mallory orphan, eve login storm.
  • examples/finance-recon/ — Excel × Parquet × REST. Killer query: per-deal warehouse_missing | payment_pending | amount_mismatch | reconciled status.
  • examples/saas-metrics/ — GraphQL × Postgres × Excel. Killer query: ARPU per million events vs tier budget share. Catches tyrell shelf-ware, initech MRR drift.

Added — language hello-worlds

examples/lang/{rust,python,csharp,java,kotlin,node,swift}/ — same canonical query, idiomatic shape per binding.

Added — docs

  • docs/pushdown-matrix.md — operator coverage per source.
  • CHANGELOG.md (this file).

[0.4.0] — 2026-05-02

Added

  • dbfy-jvm Maven Central artifact — Java JNI binding with CompletableFuture<byte[]> queryAsyncArrowIpc(sql). Per-platform classifier jars (natives-linux-x86_64, natives-osx-arm64, …).
  • dbfy-kotlin Maven Central artifact — Kotlin coroutine extensions over dbfy-jvm: suspend fun query(sql) + Flow<ByteArray> queryStream(sql). Idiomatic exceptions (no ExecutionException unwrap).
  • @typeeffect/dbfy npm package via napi-rs. Per-platform prebuilds (linux x64/arm64, macOS x64/arm64, windows x64). await engine.query(sql) returns Promise<Buffer> resolved on the V8 main thread.
  • Swift Package Manager bindings — binaryTarget xcframework covering macOS 12+, iOS 15+, Mac Catalyst 15+. actor Engine with try await engine.query(sql) via withCheckedThrowingContinuation.
  • bindings-smoke.yml CI workflow runs each binding's unit tests on every PR.
  • maven-jvm.yml, npm.yml, swift.yml publish workflows triggered on tag push.

[0.3.0] — 2026-05-02

Added

  • LDAP source with native filter pushdown. AND-merges SQL WHERE predicates into native LDAP filter syntax. Anonymous + simple bind. RFC 4515 value escaping. __dn__ synthetic column.
  • Streaming Postgres + LDAP — replaces the fetch-all-then- MemoryExec pattern with RecordBatchReceiverStream + custom ExecutionPlan. Cancellation propagates via channel-drop signal: the producer task exits and the underlying Client / Ldap handle drops, releasing wire connections.
  • C# Engine.QueryAsync(sql, ct) via FFI callback → TaskCompletionSource<Result>. Continuations off the tokio worker thread (RunContinuationsAsynchronously).
  • Java Dbfy.queryAsyncArrowIpc(sql) via JNI GlobalRef + JavaVM::AttachCurrentThread. Same FFI design as C#.
  • Excel spawn_blocking — calamine I/O moved to the blocking thread pool so it doesn't sequester tokio workers.

Source coverage matrix (8/8 with pushdown)

REST · rows-file · Parquet · Excel · GraphQL · PostgreSQL · LDAP · Programmatic.

[0.2.0] — 2026-04-29

Added

  • Project rename restsql → dbfy. Crate split: dbfy-provider* / dbfy-frontend-* / dbfy-{c,jni,py,cli}.
  • Postgres source with filter / projection / LIMIT pushdown into native wire SQL.
  • GraphQL source with pushdown.variables mapping (WHERE col = lit → GraphQL variable).
  • Excel source with predicate-during-row-stream pushdown.
  • Parquet source via DataFusion ListingTable (row-group + projection pushdown native).
  • dbfy-c C ABI with cbindgen-generated header.
  • Dbfy NuGet package for .NET (sync Engine.Query(), Apache.Arrow zero-copy via the C Data Interface).
  • GitHub Actions release pipeline — CLI binaries (Linux x86_64, macOS arm64), DuckDB extension, PyPI publish via trusted publishing.

[0.1.0] — Earlier 2026

Initial release. REST + rows-file (JSONL / CSV / logfmt / syslog / regex) sources. Single SQL surface via DataFusion engine. Programmatic provider trait. Python bindings via PyO3 + maturin. DuckDB extension via shim with dbfy_rest() / dbfy_rows_file() table functions.