lancedb-gatefixer[bot]
7e979c1416
Empty local TypeScript queries returned a zero-row Arrow table with no columns because `toArrow()` built the table solely from record batches. Local streams can yield no batches, while remote streams often supply an empty batch carrying the schema. Expose the executed stream's schema through the native iterator and decode it into an empty Arrow table when no batches arrive. This preserves projected and search columns, types, nullability, and metadata without executing another query. Document the empty-result behavior. Validation: - Eleven regression cases failed with the original `toArrow()` implementation; all twelve now pass, including remote schema-only and empty-batch responses. - All 1,075 tests in the query, remote, Arrow, and table suites pass. - Native build, TypeScript compilation, Rust formatting and Clippy (`-D warnings`), TypeScript lint/formatting, and documentation generation pass. Fixes #4386 <!-- lance-gatekeeper-fix:v1 agent=7d589da1f7db5c7383f9600490e111a9 generation=1 --> Co-authored-by: Gatefixer <313497061+lancedb-gatefixer[bot]@users.noreply.github.com>
LanceDB Documentation
LanceDB docs are available at docs.lancedb.com.
The SDK docs are built and deployed automatically by Github Actions
whenever a commit is pushed to the main branch. So it is possible for the docs to show
unreleased features.
Building the docs
Setup
- Install LanceDB Python. See setup in Python contributing guide.
Run
make developto install the Python package. - Install documentation dependencies. From LanceDB repo root:
pip install -r docs/requirements.txt
Preview the docs
cd docs
mkdocs serve
If you want to just generate the HTML files:
PYTHONPATH=. mkdocs build -f docs/mkdocs.yml
If successful, you should see a docs/site directory that you can verify locally.
Adding examples
To make sure examples are correct, we put examples in test files so they can be run as part of our test suites.
You can see the tests are at:
- Python:
python/python/tests/docs - Typescript:
nodejs/examples/
Checking python examples
cd python
pytest -vv python/tests/docs
Checking typescript examples
The examples depend on @lancedb/lancedb at file:../dist, so the package must be
built before running the tests. This uses pnpm; see the
Typescript contributing guide for the toolchain setup.
pushd nodejs
pnpm install
pnpm build
popd
Then you can run the examples by going to the nodejs/examples directory, which is a
separate pnpm package with its own lockfile:
pushd nodejs/examples
pnpm install
pnpm test
popd
API documentation
Python
The Python API documentation is organized based on the file docs/src/python/python.md.
We manually add entries there so we can control the organization of the reference page.
However, this means any new types must be manually added to the file. No additional
steps are needed to generate the API documentation.
Typescript
The typescript API documentation is generated from the typescript source code using typedoc.
When new APIs are added, you must manually re-run the typedoc command to update the API documentation. The new files should be checked into the repository.
pushd nodejs
# `pnpm docs` would invoke pnpm's built-in `docs` command, not the script.
pnpm run docs
popd