107 lines
3.3 KiB
Rust
107 lines
3.3 KiB
Rust
use crate::ctx::Context;
|
|
use crate::dbs::{Options, Transaction};
|
|
use crate::doc::CursorDoc;
|
|
use crate::err::Error;
|
|
use crate::sql::statements::{
|
|
CreateStatement, DefineStatement, DeleteStatement, IfelseStatement, InsertStatement,
|
|
OutputStatement, RelateStatement, RemoveStatement, SelectStatement, UpdateStatement,
|
|
};
|
|
use crate::sql::value::Value;
|
|
use revision::revisioned;
|
|
use serde::{Deserialize, Serialize};
|
|
use std::cmp::Ordering;
|
|
use std::fmt::{self, Display, Formatter};
|
|
|
|
pub(crate) const TOKEN: &str = "$surrealdb::private::sql::Subquery";
|
|
|
|
#[derive(Clone, Debug, Eq, PartialEq, Serialize, Deserialize, Hash)]
|
|
#[serde(rename = "$surrealdb::private::sql::Subquery")]
|
|
#[cfg_attr(feature = "arbitrary", derive(arbitrary::Arbitrary))]
|
|
#[revisioned(revision = 1)]
|
|
pub enum Subquery {
|
|
Value(Value),
|
|
Ifelse(IfelseStatement),
|
|
Output(OutputStatement),
|
|
Select(SelectStatement),
|
|
Create(CreateStatement),
|
|
Update(UpdateStatement),
|
|
Delete(DeleteStatement),
|
|
Relate(RelateStatement),
|
|
Insert(InsertStatement),
|
|
Define(DefineStatement),
|
|
Remove(RemoveStatement),
|
|
// Add new variants here
|
|
}
|
|
|
|
impl PartialOrd for Subquery {
|
|
#[inline]
|
|
fn partial_cmp(&self, _: &Self) -> Option<Ordering> {
|
|
None
|
|
}
|
|
}
|
|
|
|
impl Subquery {
|
|
/// Check if we require a writeable transaction
|
|
pub(crate) fn writeable(&self) -> bool {
|
|
match self {
|
|
Self::Value(v) => v.writeable(),
|
|
Self::Ifelse(v) => v.writeable(),
|
|
Self::Output(v) => v.writeable(),
|
|
Self::Select(v) => v.writeable(),
|
|
Self::Create(v) => v.writeable(),
|
|
Self::Update(v) => v.writeable(),
|
|
Self::Delete(v) => v.writeable(),
|
|
Self::Relate(v) => v.writeable(),
|
|
Self::Insert(v) => v.writeable(),
|
|
Self::Define(v) => v.writeable(),
|
|
Self::Remove(v) => v.writeable(),
|
|
}
|
|
}
|
|
/// Process this type returning a computed simple Value
|
|
pub(crate) async fn compute(
|
|
&self,
|
|
ctx: &Context<'_>,
|
|
opt: &Options,
|
|
txn: &Transaction,
|
|
doc: Option<&CursorDoc<'_>>,
|
|
) -> Result<Value, Error> {
|
|
// Duplicate context
|
|
let mut ctx = Context::new(ctx);
|
|
// Add parent document
|
|
if let Some(doc) = doc {
|
|
ctx.add_value("parent", doc.doc.as_ref());
|
|
}
|
|
// Process the subquery
|
|
match self {
|
|
Self::Value(ref v) => v.compute(&ctx, opt, txn, doc).await,
|
|
Self::Ifelse(ref v) => v.compute(&ctx, opt, txn, doc).await,
|
|
Self::Output(ref v) => v.compute(&ctx, opt, txn, doc).await,
|
|
Self::Define(ref v) => v.compute(&ctx, opt, txn, doc).await,
|
|
Self::Remove(ref v) => v.compute(&ctx, opt, txn, doc).await,
|
|
Self::Select(ref v) => v.compute(&ctx, opt, txn, doc).await,
|
|
Self::Create(ref v) => v.compute(&ctx, opt, txn, doc).await,
|
|
Self::Update(ref v) => v.compute(&ctx, opt, txn, doc).await,
|
|
Self::Delete(ref v) => v.compute(&ctx, opt, txn, doc).await,
|
|
Self::Relate(ref v) => v.compute(&ctx, opt, txn, doc).await,
|
|
Self::Insert(ref v) => v.compute(&ctx, opt, txn, doc).await,
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Display for Subquery {
|
|
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
|
|
match self {
|
|
Self::Value(v) => write!(f, "({v})"),
|
|
Self::Output(v) => write!(f, "({v})"),
|
|
Self::Select(v) => write!(f, "({v})"),
|
|
Self::Create(v) => write!(f, "({v})"),
|
|
Self::Update(v) => write!(f, "({v})"),
|
|
Self::Delete(v) => write!(f, "({v})"),
|
|
Self::Relate(v) => write!(f, "({v})"),
|
|
Self::Insert(v) => write!(f, "({v})"),
|
|
Self::Define(v) => write!(f, "({v})"),
|
|
Self::Remove(v) => write!(f, "({v})"),
|
|
Self::Ifelse(v) => Display::fmt(v, f),
|
|
}
|
|
}
|
|
}
|