Enum lance_io::ReadBatchParams

pub enum ReadBatchParams {
    Range(Range<usize>),
    RangeFull,
    RangeTo(RangeTo<usize>),
    RangeFrom(RangeFrom<usize>),
    Indices(UInt32Array),
}

Defines a selection of rows to read from a file/batch

Variants

Range(Range<usize>)

Select a contiguous range of rows

RangeFull

Select all rows (this is the default)

RangeTo(RangeTo<usize>)

Select all rows up to a given index

RangeFrom(RangeFrom<usize>)

Select all rows starting at a given index

Indices(UInt32Array)

Select scattered non-contiguous rows

Trait Implementations

impl<'a, T: ByteArrayType> AsyncIndex<ReadBatchParams> for BinaryDecoder<'a, T>

type Output = Result<Arc<dyn Array>, Error>

fn get<'life0, 'async_trait>( &'life0 self, params: ReadBatchParams ) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

impl<'a> AsyncIndex<ReadBatchParams> for DictionaryDecoder<'a>

type Output = Result<Arc<dyn Array>, Error>

fn get<'life0, 'async_trait>( &'life0 self, params: ReadBatchParams ) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

impl AsyncIndex<ReadBatchParams> for PlainDecoder<'_>

type Output = Result<Arc<dyn Array>, Error>

fn get<'life0, 'async_trait>( &'life0 self, params: ReadBatchParams ) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

impl Clone for ReadBatchParams

fn clone(&self) -> ReadBatchParams

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ReadBatchParams

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

Formats the value using the given formatter.

impl Default for ReadBatchParams

fn default() -> Self

Returns the “default value” for a type.

impl From<&[u32]> for ReadBatchParams

fn from(value: &[u32]) -> Self

Converts to this type from the input type.

impl From<&ReadBatchParams> for ReadBatchParams

fn from(params: &Self) -> Self

Converts to this type from the input type.

impl From<PrimitiveArray<UInt32Type>> for ReadBatchParams

fn from(value: UInt32Array) -> Self

Converts to this type from the input type.

impl From<Range<usize>> for ReadBatchParams

fn from(r: Range<usize>) -> Self

Converts to this type from the input type.

impl From<RangeFrom<usize>> for ReadBatchParams

fn from(r: RangeFrom<usize>) -> Self

Converts to this type from the input type.

impl From<RangeFull> for ReadBatchParams

fn from(_: RangeFull) -> Self

Converts to this type from the input type.

impl From<RangeTo<usize>> for ReadBatchParams

fn from(r: RangeTo<usize>) -> Self

Converts to this type from the input type.