Struct CompositeHost 

pub struct CompositeHost { /* private fields */ }

A Host implementation that aggregates multiple sub-hosts.

It routes relation scans and inserts to the appropriate backend based on explicit routing rules.

Implementations

impl CompositeHost

pub fn new() -> Self

pub fn add_host(&mut self, host: Box<dyn Host + Send>) -> usize

Adds a sub-host and returns its index.

pub fn route_relation(&mut self, rel_name: &str, host_index: usize)

Routes a relation to a specific sub-host.

Trait Implementations

impl Default for CompositeHost

fn default() -> Self

Returns the “default value” for a type.

impl Host for CompositeHost

fn scan_start(&mut self, rel_id: i32) -> i32

fn scan_next(&mut self, iter_id: i32) -> i32

fn get_col(&mut self, tuple_ptr: i32, col_idx: i32) -> i64

fn insert(&mut self, rel_id: i32, val: i64)

fn scan_delta_start(&mut self, rel_id: i32) -> i32

fn scan_index_start(&mut self, rel_id: i32, col_idx: i32, val: i64) -> i32

fn scan_aggregate_start(&mut self, rel_id: i32, description: Vec<i32>) -> i32

fn merge_deltas(&mut self) -> i32

Merges deltas and returns 1 if changes occurred, 0 otherwise.

fn debuglog(&mut self, _val: i64)