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//! This library provides a low-level database library implementation, a remote client
//! and a query language definition, for [SurrealDB](https://surrealdb.com), the ultimate cloud database for
//! tomorrow's applications. SurrealDB is a scalable, distributed, collaborative, document-graph
//! database for the realtime web.
//!
//! This library can be used to start an embedded in-memory datastore, an embedded datastore
//! persisted to disk, a browser-based embedded datastore backed by IndexedDB, or for connecting
//! to a distributed [TiKV](https://tikv.org) key-value store.
//!
//! It also enables simple and advanced querying of a remote SurrealDB server from
//! server-side or client-side code. All connections to SurrealDB are made over WebSockets by default,
//! and automatically reconnect when the connection is terminated.
//!
//! # Examples
//!
//! ```no_run
//! use serde::{Serialize, Deserialize};
//! use serde_json::json;
//! use std::borrow::Cow;
//! use surrealdb::{Result, Surreal};
//! use surrealdb::sql;
//! use surrealdb::opt::auth::Root;
//! use surrealdb::engine::remote::ws::Ws;
//!
//! #[derive(Serialize, Deserialize)]
//! struct Name {
//! first: Cow<'static, str>,
//! last: Cow<'static, str>,
//! }
//!
//! #[derive(Serialize, Deserialize)]
//! struct Person {
//! title: Cow<'static, str>,
//! name: Name,
//! marketing: bool,
//! }
//!
//! #[tokio::main]
//! async fn main() -> Result<()> {
//! let db = Surreal::new::<Ws>("localhost:8000").await?;
//!
//! // Signin as a namespace, database, or root user
//! db.signin(Root {
//! username: "root",
//! password: "root",
//! }).await?;
//!
//! // Select a specific namespace / database
//! db.use_ns("namespace").use_db("database").await?;
//!
//! // Create a new person with a random ID
//! let created: Vec<Person> = db.create("person")
//! .content(Person {
//! title: "Founder & CEO".into(),
//! name: Name {
//! first: "Tobie".into(),
//! last: "Morgan Hitchcock".into(),
//! },
//! marketing: true,
//! })
//! .await?;
//!
//! // Create a new person with a specific ID
//! let created: Option<Person> = db.create(("person", "jaime"))
//! .content(Person {
//! title: "Founder & COO".into(),
//! name: Name {
//! first: "Jaime".into(),
//! last: "Morgan Hitchcock".into(),
//! },
//! marketing: false,
//! })
//! .await?;
//!
//! // Update a person record with a specific ID
//! let updated: Option<Person> = db.update(("person", "jaime"))
//! .merge(json!({"marketing": true}))
//! .await?;
//!
//! // Select all people records
//! let people: Vec<Person> = db.select("person").await?;
//!
//! // Perform a custom advanced query
//! let sql = r#"
//! SELECT marketing, count()
//! FROM type::table($table)
//! GROUP BY marketing
//! "#;
//!
//! let groups = db.query(sql)
//! .bind(("table", "person"))
//! .await?;
//!
//! Ok(())
//! }
//! ```
#![doc(html_favicon_url = "https://surrealdb.s3.amazonaws.com/favicon.png")]
#![doc(html_logo_url = "https://surrealdb.s3.amazonaws.com/icon.png")]
#![cfg_attr(docsrs, feature(doc_cfg))]
#![cfg_attr(test, deny(warnings))]
#[macro_use]
extern crate tracing;
#[macro_use]
mod mac;
mod api;
mod cf;
mod ctx;
mod doc;
mod exe;
mod fnc;
mod vs;
pub mod sql;
#[doc(hidden)]
pub mod cnf;
#[doc(hidden)]
pub mod dbs;
#[doc(hidden)]
pub mod env;
#[doc(hidden)]
pub mod err;
#[doc(hidden)]
pub mod iam;
#[doc(hidden)]
pub mod idg;
#[doc(hidden)]
pub mod idx;
#[doc(hidden)]
pub mod key;
#[doc(hidden)]
pub mod kvs;
#[doc(inline)]
pub use api::engine;
#[doc(inline)]
pub use api::method;
#[doc(inline)]
pub use api::opt;
#[doc(inline)]
pub use api::Connect;
#[doc(inline)]
pub use api::Connection;
#[doc(inline)]
pub use api::Response;
#[doc(inline)]
pub use api::Result;
#[doc(inline)]
pub use api::Surreal;
#[doc(hidden)]
/// Channels for receiving a SurrealQL database export
pub mod channel {
pub use channel::bounded as new;
pub use channel::Receiver;
pub use channel::Sender;
}
/// Different error types for embedded and remote databases
pub mod error {
pub use crate::api::err::Error as Api;
pub use crate::err::Error as Db;
}
/// An error originating from the SurrealDB client library
#[derive(Debug, thiserror::Error, serde::Serialize)]
pub enum Error {
/// An error with an embedded storage engine
#[error("{0}")]
Db(#[from] crate::error::Db),
/// An error with a remote database instance
#[error("{0}")]
Api(#[from] crate::error::Api),
}