surrealpatch/lib/src/doc/purge.rs
Tobie Morgan Hitchcock 1017e2fffb Don’t clone variables when processing sub-contexts
Closes SUR-53

When creating a new context for subqueries or statement clauses, we used to have to clone any variables/values, and freeze the context, so that it could be used across threads and async boundaries.

Now with the new executor pattern for parallel queries, we can pass references instead, improving performance by removing unnecessary cloning of values.
2022-05-14 13:38:17 +01:00

40 lines
1 KiB
Rust

use crate::ctx::Context;
use crate::dbs::Options;
use crate::dbs::Statement;
use crate::dbs::Transaction;
use crate::doc::Document;
use crate::err::Error;
impl<'a> Document<'a> {
pub async fn purge(
&self,
_ctx: &Context<'_>,
opt: &Options,
txn: &Transaction,
_stm: &Statement<'_>,
) -> Result<(), Error> {
// Check if forced
if !opt.force && !self.changed() {
return Ok(());
}
// Check if the table is a view
if self.tb(opt, txn).await?.drop {
return Ok(());
}
// Clone transaction
let run = txn.clone();
// Claim transaction
let mut run = run.lock().await;
// Get the record id
let rid = self.id.as_ref().unwrap();
// Purge the record data
let key = crate::key::thing::new(opt.ns(), opt.db(), &rid.tb, &rid.id);
run.del(key).await?;
// Remove the graph data
let beg = crate::key::graph::prefix(opt.ns(), opt.db(), &rid.tb, &rid.id);
let end = crate::key::graph::suffix(opt.ns(), opt.db(), &rid.tb, &rid.id);
run.delr(beg..end, u32::MAX).await?;
// Carry on
Ok(())
}
}