Struct PageStoreArgs 

pub struct PageStoreArgs<'a> {
    column_index: usize,
    column_descriptor: &'a ColumnDescriptor,
}

Context for a single PageStoreFactory::create call.

Describes the leaf column chunk the store will buffer. It is held by reference for the duration of the call; a backend reads only what it needs. More fields may be added in future releases without breaking existing implementations — the type is constructed only by the writer, so an implementer only ever receives one and calls its accessors.

Fields

column_index: usize

column_descriptor: &'a ColumnDescriptor

Implementations

impl<'a> PageStoreArgs<'a>

pub(crate) fn new( column_index: usize, column_descriptor: &'a ColumnDescriptor, ) -> Self

pub fn column_index(&self) -> usize

Index of the leaf column within the row group.

A backend may use this to e.g. name spill files or shard across a bounded pool; it carries no ordering or coordination requirement.

pub fn column_descriptor(&self) -> &ColumnDescriptor

Descriptor for the leaf column: physical/logical type, path, and max definition/repetition levels.

Lets a backend tailor buffering to the column — for example spilling only large BYTE_ARRAY columns while keeping small fixed-width ones on the heap.