VectorSection

omendb_core::omen

Struct VectorSection 

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pub struct VectorSection { /* private fields */ }
Expand description

Vector section - contiguous array of vectors

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impl VectorSection

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pub unsafe fn from_mmap( mmap: &MmapMut, offset: usize, length: usize, dimensions: u32, ) -> Result<Self>

Create from mmap region

§Safety

The mmap must remain valid for the lifetime of this section. The data at offset must be properly aligned f32 values.

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pub fn new(dimensions: u32) -> Self

Create empty section for building

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pub fn get(&self, index: u32) -> Option<&[f32]>

Get vector by index - O(1)

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pub fn prefetch(&self, index: u32)

Prefetch vector for cache warming (VSAG-style)

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pub fn dimensions(&self) -> u32

Get dimensions

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pub fn count(&self) -> u64

Get vector count

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pub fn size_for_count(dimensions: u32, count: u64) -> u64

Calculate size in bytes for given count

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pub fn write_vectors<W: Write>(writer: &mut W, vectors: &[&[f32]]) -> Result<()>

Serialize vectors to bytes (for writing)

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