Struct ObjectStoreRowMetadataSource 

pub struct ObjectStoreRowMetadataSource { /* private fields */ }

A RowMetadataSource that uses an object storage API to retrieve partition columns and timestamp metadata.

Object store metadata by default comes from FileMetadata, but may be overridden with a custom TableProvider using Self::with_file_metadata.

Implementations

impl ObjectStoreRowMetadataSource

pub fn new(file_metadata: Arc<FileMetadata>) -> Self

Create a new ObjectStoreRowMetadataSource from the FileMetadata table

pub fn with_file_metadata(file_metadata: Arc<dyn TableProvider>) -> Self

Create a new ObjectStoreRowMetadataSource using a custom file metadata source

Trait Implementations

impl Clone for ObjectStoreRowMetadataSource

fn clone(&self) -> ObjectStoreRowMetadataSource

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ObjectStoreRowMetadataSource

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl RowMetadataSource for ObjectStoreRowMetadataSource

fn row_metadata( &self, table: ResolvedTableReference, scan: &TableScan, ) -> Result<LogicalPlanBuilder>

Scan for partition column values using object store metadata. This allows us to efficiently scan for distinct partition column values without ever reading from a table directly, which is useful for low-overhead incremental view maintenance.

fn name(&self) -> &str

The name of this row metadata source.