Trait CacheDb 

pub trait CacheDb<S>:
    Clone
    + Send
    + Sync
where
    S: Dto,
{
    // Required methods
    fn get_from_db(
        &self,
        prefix: Option<&str>,
        key: &ModelKey,
    ) -> Result<Option<String>, DbError>;
    fn set_in_db(
        &self,
        prefix: Option<&str>,
        key: &ModelKey,
        state: String,
    ) -> Result<(), DbError>;

    // Provided methods
    fn get(
        &self,
        prefix: Option<&str>,
        key: &ModelKey,
    ) -> Result<ModelWithPosition<S>, DbError> { ... }
    fn set(
        &self,
        key: &ModelKey,
        data: ModelWithPosition<S>,
        prefix: Option<&str>,
    ) -> Result<(), DbError> { ... }
}

CacheDb has only one purpose, reading and writing state somewhere

Required Methods

fn get_from_db( &self, prefix: Option<&str>, key: &ModelKey, ) -> Result<Option<String>, DbError>

internal function to read from the db

Errors

Will return Err if any error append when calling the DB.

fn set_in_db( &self, prefix: Option<&str>, key: &ModelKey, state: String, ) -> Result<(), DbError>

internal function to write in the db

Errors

Will return Err if any error append when calling the DB.

Provided Methods

fn get( &self, prefix: Option<&str>, key: &ModelKey, ) -> Result<ModelWithPosition<S>, DbError>

public function to read the db

Errors

Will return Err if any error append when calling the DB.

fn set( &self, key: &ModelKey, data: ModelWithPosition<S>, prefix: Option<&str>, ) -> Result<(), DbError>

public function to write in the db

Errors

Will return Err if any error append when calling the DB.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<S> CacheDb<S> for NoCache<S>

where S: Dto,

impl<S> CacheDb<S> for StateDb<S>

where S: Dto,