1017e2fffb
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.
66 lines
1.8 KiB
Rust
66 lines
1.8 KiB
Rust
use crate::ctx::Context;
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use crate::dbs::Options;
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use crate::dbs::Statement;
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use crate::dbs::Transaction;
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use crate::doc::Document;
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use crate::err::Error;
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use crate::sql::data::Data;
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use crate::sql::operator::Operator;
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use crate::sql::value::Value;
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impl<'a> Document<'a> {
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pub async fn merge(
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&mut self,
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ctx: &Context<'_>,
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opt: &Options,
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txn: &Transaction,
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stm: &Statement<'_>,
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) -> Result<(), Error> {
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// Get the record id
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let rid = self.id.as_ref().unwrap();
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// Set default field values
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self.current.to_mut().def(ctx, opt, txn, rid).await?;
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// The statement has a data clause
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if let Some(v) = stm.data() {
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match v {
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Data::SetExpression(x) => {
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for x in x.iter() {
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let v = x.2.compute(ctx, opt, txn, Some(&self.current)).await?;
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match x.1 {
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Operator::Equal => match v {
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Value::Void => {
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self.current.to_mut().del(ctx, opt, txn, &x.0).await?
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}
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_ => self.current.to_mut().set(ctx, opt, txn, &x.0, v).await?,
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},
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Operator::Inc => {
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self.current.to_mut().increment(ctx, opt, txn, &x.0, v).await?
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}
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Operator::Dec => {
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self.current.to_mut().decrement(ctx, opt, txn, &x.0, v).await?
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}
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_ => unreachable!(),
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}
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}
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}
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Data::PatchExpression(data) => {
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self.current.to_mut().patch(ctx, opt, txn, data).await?
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}
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Data::MergeExpression(data) => {
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self.current.to_mut().merge(ctx, opt, txn, data).await?
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}
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Data::ReplaceExpression(data) => {
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self.current.to_mut().replace(ctx, opt, txn, data).await?
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}
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Data::ContentExpression(data) => {
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self.current.to_mut().replace(ctx, opt, txn, data).await?
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}
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_ => unreachable!(),
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};
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};
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// Set default field values
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self.current.to_mut().def(ctx, opt, txn, rid).await?;
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// Carry on
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Ok(())
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}
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}
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