Crate lance_graph_catalog 

Catalog and namespace utilities for Lance Graph.

This crate provides the SPI (Service Provider Interface) layer for external catalog integration, inspired by Presto’s connector architecture:

• CatalogProvider — browse catalog metadata (analogous to ConnectorMetadata)
• TableReader — read table data in specific formats (analogous to ConnectorPageSourceProvider)
• Connector — bundles catalog + readers (analogous to Presto’s Connector)

Re-exports

pub use namespace::DirNamespace;

pub use source_catalog::GraphSourceCatalog;

pub use source_catalog::InMemoryCatalog;

pub use source_catalog::SimpleTableSource;

pub use catalog_provider::CatalogError;

pub use catalog_provider::CatalogInfo;

pub use catalog_provider::CatalogProvider;

pub use catalog_provider::CatalogResult;

pub use catalog_provider::ColumnInfo;

pub use catalog_provider::DataSourceFormat;

pub use catalog_provider::SchemaInfo;

pub use catalog_provider::TableInfo;

pub use catalog_provider::TableType;

pub use connector::Connector;

pub use table_reader::TableReader;

pub use type_mapping::columns_to_arrow_schema;

pub use unity_catalog::UnityCatalogConfig;

pub use unity_catalog::UnityCatalogProvider;

Modules

catalog_provider

Catalog provider trait and data types for external catalog integration.

connector

Connector facade that bundles a CatalogProvider with TableReaders.

namespace

source_catalog

Context-free source catalog for DataFusion logical planning.

table_reader

Table reader trait for format-specific data reading.

type_mapping

Type mapping from Unity Catalog types to Arrow data types.

unity_catalog

Unity Catalog REST API client implementing the CatalogProvider trait.