Trait Backend 

pub trait Backend:
    Send
    + Sync
    + DynClone {
    // Required methods
    fn name(&self) -> &'static str;
    fn row_id_column(&self) -> Option<&'static str>;
    fn create_migration_sql(
        &self,
        current: &ADB,
        ops: Vec<Operation>,
    ) -> Result<String>;
    fn connect(&self, conn_str: &str) -> Result<Connection>;
}

Database backend. A boxed implementation can be returned by name via get_backend.

Required Methods

fn name(&self) -> &'static str

Butane name for the backend.

fn row_id_column(&self) -> Option<&'static str>

Backend-dependent field name for the database’s internal identifier for each row.

It may be used to sort the rows in the order they were inserted, however consult the backend documentation for the exact behavior. For example, SQLite uses rowid and PostgreSQL uses ctid. This is not the same as the primary key of the table. It may be None if the backend does not support this.

fn create_migration_sql( &self, current: &ADB, ops: Vec<Operation>, ) -> Result<String>

fn connect(&self, conn_str: &str) -> Result<Connection>

Establish a new sync connection.

The format of the connection string is backend-dependent.

Trait Implementations

impl Backend for Box<dyn Backend>

fn name(&self) -> &'static str

Butane name for the backend.

fn row_id_column(&self) -> Option<&'static str>

Backend-dependent field name for the database’s internal identifier for each row.

fn create_migration_sql( &self, current: &ADB, ops: Vec<Operation>, ) -> Result<String>

fn connect(&self, conn_str: &str) -> Result<Connection>

Establish a new sync connection.

Dyn Compatibility

This trait is dyn compatible.

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

Implementations on Foreign Types

impl Backend for Box<dyn Backend>

fn name(&self) -> &'static str

fn row_id_column(&self) -> Option<&'static str>

fn create_migration_sql( &self, current: &ADB, ops: Vec<Operation>, ) -> Result<String>

fn connect(&self, conn_str: &str) -> Result<Connection>

Implementors