fbd924fbac
Instead of blindly cloning document values (even if we don't need to mutate them), we now use copy-on-write semantics to only create a copy if we need to update a document value. This improves performance, especially when selecting documents.
33 lines
722 B
Rust
33 lines
722 B
Rust
use crate::dbs::Executor;
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use crate::dbs::Options;
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use crate::dbs::Runtime;
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use crate::dbs::Statement;
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use crate::doc::Document;
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use crate::err::Error;
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impl<'a> Document<'a> {
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pub async fn check(
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&self,
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ctx: &Runtime,
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opt: &Options,
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exe: &Executor<'_>,
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stm: &Statement<'_>,
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) -> Result<(), Error> {
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// Extract statement clause
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let cond = match stm {
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Statement::Select(stm) => stm.cond.as_ref(),
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Statement::Update(stm) => stm.cond.as_ref(),
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_ => unreachable!(),
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};
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// Match clause
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match cond {
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Some(v) => {
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match v.expr.compute(ctx, opt, exe, Some(&self.current)).await?.is_truthy() {
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false => Err(Error::IgnoreError),
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true => Ok(()),
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}
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}
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None => Ok(()),
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}
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}
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}
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