Struct lance_file::v2::reader::FileReader

pub struct FileReader { /* private fields */ }

Implementations

impl FileReader

pub fn metadata(&self) -> &Arc<CachedFileMetadata>

pub async fn print_all_metadata(metadata: &CachedFileMetadata) -> Result<()>

pub async fn try_open( scheduler: FileScheduler, projection: Schema ) -> Result<Self>

Opens a new file reader without any pre-existing knowledge

This will read the file schema and desired column metadata from the

pub fn read_tasks( &self, params: ReadBatchParams, batch_size: u32 ) -> Result<Pin<Box<dyn Stream<Item = ReadBatchTask<impl Future<Output = Result<RecordBatch>>>> + Send>>>

pub fn read_stream( &self, params: ReadBatchParams, batch_size: u32 ) -> Result<Pin<Box<dyn RecordBatchStream>>>

Trait Implementations

impl Debug for FileReader

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

Formats the value using the given formatter.