Struct Json

pub struct Json<T>(pub T);

Wrapper type that deserializes a Redis bulk string as JSON into a Rust value.

This is useful for retrieving structured data from Redis that was stored as JSON. Typically used with commands like GET, HGET, or any command returning a bulk string.

Example

use rustis::{
    client::Client,
    commands::{FlushingMode, ServerCommands, StringCommands},
    resp::{Json, JsonRef},
    Result
};

#[derive(Debug, PartialEq, serde::Deserialize, serde::Serialize)]
struct User {
    id: u32,
    name: String,
}

#[cfg_attr(feature = "tokio-runtime", tokio::main)]
#[cfg_attr(feature = "async-std-runtime", async_std::main)]
async fn main() -> Result<()> {
    let client = Client::connect("127.0.0.1:6379").await?;
    client.flushall(FlushingMode::Sync).await?;
    let user1 = User { id: 12, name: "foo".to_string() };
    client.set("user:123", JsonRef(&user1)).await;
    let Json(user2): Json<User> = client.get("user:123").await?;

    assert_eq!(user1, user2);
    Ok(())
}

Tuple Fields

0: T

Implementations

impl<T> Json<T>

pub fn into_inner(self) -> T

Trait Implementations

impl<T: Clone> Clone for Json<T>

fn clone(&self) -> Json<T>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug> Debug for Json<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de, T> Deserialize<'de> for Json<T>

where T: Deserialize<'de>,

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T> ToArgs for Json<T>

where T: Serialize,

fn write_args(&self, args: &mut CommandArgs)

Write this Rust type as one ore multiple args into CommandArgs.

fn num_args(&self) -> usize

Number arguments generated by this Rust type

impl<T> PrimitiveResponse for Json<T>

where T: DeserializeOwned,

impl<T> SingleArg for Json<T>

where T: Serialize,