odbc_fast 0.3.0

Enterprise-grade ODBC data platform for Dart with a Rust native engine, streaming queries, pooling, and structured diagnostics.

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

0.3.0 - 2026-01-29

Added

• Configurable result buffer size: ConnectionOptions.maxResultBufferBytes (optional). When set at connect time, caps the size of query result buffers for that connection; when null, the package default (16 MB) is used. Use for large result sets to avoid "Buffer too small" errors. Constant defaultMaxResultBufferBytes is exported for reference.

0.2.9 - 2026-01-29

Fixed

• Async API "QueryError: No error": when executing queries with no parameters, the Dart FFI was passing null for the params buffer to odbc_exec_query_params, which caused invalid argument and led to failures reported as "No error". The native bindings now always pass a valid buffer (e.g. Uint8List(0)) instead of null, so both sync and async (worker) paths work correctly for parameterless queries.

0.2.8 - 2026-01-29

Added

• scripts/copy_odbc_dll.ps1: copies odbc_engine.dll from package (pub cache) to project root and Flutter runner folders (Debug/Release) for consumers who need the DLL manually

Changed

• Publish hook/ and scripts/ in the package (removed from .pubignore): Native Assets hook runs for consumers so the DLL can be downloaded/cached automatically; script copy_odbc_dll.ps1 is available in the package
• Minimum SDK constraint raised to >=3.6.0 (required by pub.dev when publishing packages with build hooks)

Fixed

• Async API (worker isolate): empty result (DDL/DML, SELECT with no rows) is now returned as Result.ok(QueryResult(columns: [], rows: [], rowCount: 0)) instead of Result.err(QueryError("No error", ...)) (fixes "No error" when executing CREATE TABLE, INSERT, ALTER, etc.)

0.2.7 - 2026-01-29

Fixed

• Native DLL cache now keyed by package version (~/.cache/odbc_fast/<version>/) to avoid loading an older DLL when upgrading the package (fixes symbol lookup error 127 for new symbols e.g. odbc_savepoint_create)

0.2.6 - 2026-01-29

Added

• README: "Support the project" section with Pix (buy developer a coffee)

Changed

• Exclude test/my_test/ from pub package via .pubignore (domain-specific tests)
• README: installation example updated to ^0.2.6

0.2.5 - 2026-01-29

Added

• Database type detection in tests: detectDatabaseType(), skipIfDatabase(), skipUnlessDatabase()
• Test helpers for conditional execution by database (SQL Server, PostgreSQL, MySQL, Oracle)
• test/helpers/README.md with usage and examples

Changed

• Dart tests run sequentially (--concurrency=1) to avoid resource contention (ServiceLocator, worker isolates)
• Savepoint release test skipped on SQL Server (RELEASE SAVEPOINT not supported)

Fixed

• Rust FFI E2E: ffi_test_dsn() loads .env and checks ENABLE_E2E_TESTS; invalid stream ID race in tests
• Dart integration test timeouts when running in parallel

0.2.4 - 2026-01-27

Added

• Examples: multi-result, timeouts, typed params, and low-level wrappers

Changed

• README: refresh API coverage and fix broken links

0.2.3 - 2026-01-27

Changed

• CI: run only unit tests that do not require real ODBC connection (domain, protocol, errors)
• CI: exclude stress, integration/e2e, and native-dependent tests from publish pipeline

0.2.2 - 2026-01-27

Changed

• Version bump for release

0.2.1 - 2026-01-27

Fixed

• Fixed Native Assets hook to read package version from correct pubspec.yaml
• Fixed test helper to properly handle empty environment variables
• Fixed GitHub Actions cache paths and key format

Changed

• Improved CI workflow: now builds Rust library before running tests
• Split unit and integration tests in CI for better organization
• Enhanced GitHub Actions workflows with proper dependency installation

0.2.0 - 2026-01-27

Added

• Savepoints (nested transaction markers)
• Automatic retry with exponential backoff for transient errors
• Connection timeouts (login/connection timeout configuration)
• Connection String Builder (fluent API)
• Backpressure control in streaming queries

Changed

• Async API with worker isolate for non-blocking operations
• Comprehensive E2E Rust tests with coverage reporting
• Improved documentation and troubleshooting guides

Fixed

• Various lint issues (very_good_analysis compliance)
• Code formatting and cleanup

0.1.6 2025-12-XX

Added

• Initial stable release
• Core ODBC functionality
• Streaming queries
• Connection pooling
• Prepared statements
• Transaction support
• Bulk insert operations
• Metrics and observability