Struct CompressedMemMapBuilder 

pub struct CompressedMemMapBuilder { /* private fields */ }

Builder for compressed memory-mapped arrays.

Implementations

impl CompressedMemMapBuilder

pub fn new() -> Self

Create a new builder with default settings.

pub fn with_block_size(self, blocksize: usize) -> Self

Set the block size in elements.

Larger blocks provide better compression but slower random access.

pub fn with_algorithm(self, algorithm: CompressionAlgorithm) -> Self

Set the compression algorithm.

pub fn with_level(self, level: i32) -> Self

Set the compression level.

Higher levels provide better compression but slower compression speed. The valid range depends on the algorithm.

• LZ4: 1-12
• Zstd: 1-22
• Snappy: Ignores this parameter

pub fn with_cache_size(self, cachesize: usize) -> Self

Set the maximum cache size in blocks.

Larger cache sizes allow for more decompressed blocks to be held in memory, potentially improving performance for repeated access patterns.

pub fn with_cache_ttl(self, ttl: Option<Duration>) -> Self

Set the cache time-to-live duration.

Blocks will be evicted from cache after this duration if not accessed. Set to None for no time-based eviction.

pub fn with_description(self, description: impl Into<String>) -> Self

Set an optional description.

pub fn create<A, S, D>( &self, data: &ArrayBase<S, D>, path: impl AsRef<Path>, ) -> CoreResult<CompressedMemMappedArray<A>>

where A: Clone + Copy + 'static + Send + Sync, S: RawData<Elem = A>, D: Dimension,

Create a compressed memory-mapped array from existing data.

Arguments

• data - The data to compress
• path - The file path to save the compressed data

Returns

A compressed memory-mapped array

pub fn create_from_raw<A>( &self, data: &[A], shape: &[usize], path: impl AsRef<Path>, ) -> CoreResult<CompressedMemMappedArray<A>>

where A: Clone + Copy + 'static + Send + Sync,

Create a compressed memory-mapped array from raw data.

Arguments

• data - The raw data to compress
• shape - The shape of the array
• path - The file path to save the compressed data

Returns

A compressed memory-mapped array

Trait Implementations

impl Clone for CompressedMemMapBuilder

fn clone(&self) -> CompressedMemMapBuilder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CompressedMemMapBuilder

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

Formats the value using the given formatter.

impl Default for CompressedMemMapBuilder

fn default() -> Self

Returns the “default value” for a type.