Enum RowDatasetVersionMeta 

pub enum RowDatasetVersionMeta {
    Inline(Arc<[u8]>),
    External(ExternalFile),
}

Metadata about the location of dataset version sequence data Following the same pattern as RowIdMeta

When stored inline, identical byte sequences are shared across fragments via Arc<[u8]> to reduce manifest memory for large tables.

Variants

Inline(Arc<[u8]>)

Small sequences stored inline in the fragment metadata

External(ExternalFile)

Large sequences stored in external files

Implementations

impl RowDatasetVersionMeta

pub fn from_sequence( sequence: &RowDatasetVersionSequence, ) -> Result<RowDatasetVersionMeta, Error>

Create inline metadata from a version sequence

pub fn from_external_file( path: String, offset: u64, size: u64, ) -> RowDatasetVersionMeta

Create external metadata reference

pub fn load_sequence(&self) -> Result<RowDatasetVersionSequence, Error>

Load the version sequence from this metadata

Trait Implementations

impl Clone for RowDatasetVersionMeta

fn clone(&self) -> RowDatasetVersionMeta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RowDatasetVersionMeta

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

Formats the value using the given formatter.

impl DeepSizeOf for RowDatasetVersionMeta

fn deep_size_of_children(&self, context: &mut Context) -> usize

Returns an estimation of the heap-managed storage of this object. This does not include the size of the object itself.

fn deep_size_of(&self) -> usize

Returns an estimation of a total size of memory owned by the object, including heap-managed storage.

impl<'de> Deserialize<'de> for RowDatasetVersionMeta

fn deserialize<D>( deserializer: D, ) -> Result<RowDatasetVersionMeta, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for RowDatasetVersionMeta

impl PartialEq for RowDatasetVersionMeta

fn eq(&self, other: &RowDatasetVersionMeta) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for RowDatasetVersionMeta

fn serialize<S>( &self, serializer: S, ) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for RowDatasetVersionMeta

impl TryFrom<CreatedAtVersionSequence> for RowDatasetVersionMeta

type Error = Error

The type returned in the event of a conversion error.

fn try_from( value: CreatedAtVersionSequence, ) -> Result<RowDatasetVersionMeta, Error>

Performs the conversion.

impl TryFrom<LastUpdatedAtVersionSequence> for RowDatasetVersionMeta

type Error = Error

The type returned in the event of a conversion error.

fn try_from( value: LastUpdatedAtVersionSequence, ) -> Result<RowDatasetVersionMeta, Error>

Performs the conversion.