surrealdb/api/method/
merge.rs

1use crate::api::conn::Command;
2use crate::api::method::BoxFuture;
3use crate::api::opt::Resource;
4use crate::api::Connection;
5use crate::api::Result;
6use crate::method::OnceLockExt;
7use crate::value::Value;
8use crate::Surreal;
9use serde::de::DeserializeOwned;
10use serde::Serialize;
11use std::borrow::Cow;
12use std::future::IntoFuture;
13use std::marker::PhantomData;
14use surrealdb_core::sql::{to_value as to_core_value, Value as CoreValue};
15
16/// A merge future
17#[derive(Debug)]
18#[must_use = "futures do nothing unless you `.await` or poll them"]
19pub struct Merge<'r, C: Connection, D, R> {
20	pub(super) client: Cow<'r, Surreal<C>>,
21	pub(super) resource: Result<Resource>,
22	pub(super) content: D,
23	pub(super) response_type: PhantomData<R>,
24}
25
26impl<C, D, R> Merge<'_, C, D, R>
27where
28	C: Connection,
29{
30	/// Converts to an owned type which can easily be moved to a different thread
31	pub fn into_owned(self) -> Merge<'static, C, D, R> {
32		Merge {
33			client: Cow::Owned(self.client.into_owned()),
34			..self
35		}
36	}
37}
38
39macro_rules! into_future {
40	($method:ident) => {
41		fn into_future(self) -> Self::IntoFuture {
42			let Merge {
43				client,
44				resource,
45				content,
46				..
47			} = self;
48			let content = to_core_value(content);
49			Box::pin(async move {
50				let content = match content? {
51					CoreValue::None | CoreValue::Null => None,
52					x => Some(x),
53				};
54
55				let router = client.router.extract()?;
56				let cmd = Command::Merge {
57					what: resource?,
58					data: content,
59				};
60				router.$method(cmd).await
61			})
62		}
63	};
64}
65
66impl<'r, Client, D> IntoFuture for Merge<'r, Client, D, Value>
67where
68	Client: Connection,
69	D: Serialize + 'static,
70{
71	type Output = Result<Value>;
72	type IntoFuture = BoxFuture<'r, Self::Output>;
73
74	into_future! {execute_value}
75}
76
77impl<'r, Client, D, R> IntoFuture for Merge<'r, Client, D, Option<R>>
78where
79	Client: Connection,
80	D: Serialize + 'static,
81	R: DeserializeOwned,
82{
83	type Output = Result<Option<R>>;
84	type IntoFuture = BoxFuture<'r, Self::Output>;
85
86	into_future! {execute_opt}
87}
88
89impl<'r, Client, D, R> IntoFuture for Merge<'r, Client, D, Vec<R>>
90where
91	Client: Connection,
92	D: Serialize + 'static,
93	R: DeserializeOwned,
94{
95	type Output = Result<Vec<R>>;
96	type IntoFuture = BoxFuture<'r, Self::Output>;
97
98	into_future! {execute_vec}
99}
surrealdb/api/method/merge.rs

surrealdb/api/method/
merge.rs
