Contributing to Lance Namespace

Repository structure

Component	Language	Path	Description
spec		docs/src/spec	Lance Namespace Specification
Rust Reqwest Client	Rust	rust/lance-namespace-reqwest-client	Generated Rust reqwest client for Lance REST Namespace
Python UrlLib3 Client	Python	python/lance_namespace_urllib3_client	Generated Python urllib3 client for Lance REST Namespace
Python Lance Namespace Core	Python	python/lance_namespace	Lance Namespace Python Core SDK
Java Apache Client	Java	java/lance-namespace-apache-client	Generated Java Apache HTTP client for Lance REST Namespace
Java Springboot Server	Java	java/lance-namespace-springboot-server	Generated Java SpringBoot server for Lance REST Namespace
Java Lance Namespace Core	Java	java/lance-namespace-core	Lance Namespace Java Core SDK
Java Lance Namespace Adapter	Java	java/lance-namespace-adaptor	Lance Namespace adapter server implementation
Java Lance Namespace Hive	Java	java/lance-namespace-hive	Java Lance Namespace Apache Hive Metastore Implementation
Java Lance Namespace Glue	Java	java/lance-namespace-glue	Java Lance Namespace AWS Glue Data Catalog Implementation
Java Lance Namespace LanceDB	Java	java/lance-namespace-lancedb	Java Utilities to use Lance Namespace SDK with LanceDB Cloud & Enterprise

Install uv

We use uv for development. Make sure it is installed, and run:

uv sync --all-packages

Lint

To ensure the OpenAPI definition is valid, you can use the lint command to check it.

make lint

Build

There are 3 commands that is available at top level as well as inside each language folder:

• make clean: remove all codegen modules
• make gen: codegen and lint all modules (depends on clean)
• make build: build all modules (depends on gen)

You can also run make <command>-<language> to only run the command in the specific language, for example:

• make gen-python: codegen and lint all Python modules
• make build-rust: build all Rust modules

You can also run make <command>-<language>-<module> inside a language folder to run the command against a specific module, for example:

• make gen-rust-reqwest-client: codegen and lint the Rust reqwest client module
• make build-java-springboot-server: build the Java Spring Boot server module