Struct InitInfo 

pub struct InitInfo<V: VTab> { /* private fields */ }

An interface to store and retrieve data during the table function’s init stage.

Implementations

impl<V: VTab> InitInfo<V>

pub fn bind_data(&self) -> &V::BindData

The bind data produced by VTab::bind for this call.

Read-only: for tracking state across calls to the execution callback, store it in the init data instead.

pub fn set_max_threads(&self, max_threads: u64)

Sets how many threads may call the execution callback for this query in parallel. Defaults to 1 (single-threaded execution).

pub fn column_indices(&self) -> Vec<usize>

The 0-based indices, into the function’s full result schema, of the columns the query actually needs — only meaningful when the function declared supports_projection_pushdown(). Empty if pushdown wasn’t requested or the function didn’t opt in, in which case every column should be written.

pub fn extra_info<T>(&self) -> Option<&T>

The registration-time “extra info”, if any — see BindInfo::extra_info.

Safety

The caller must request the same T that was stored at registration time; there is no runtime type check.