Crate schemer_postgres

An adapter enabling use of the schemer schema migration library with PostgreSQL.

Examples:

extern crate postgres;
#[macro_use]
extern crate schemer;
extern crate schemer_postgres;
extern crate uuid;

use std::collections::HashSet;

use postgres::{Client, NoTls, Transaction};
use schemer::{Migration, Migrator};
use schemer_postgres::{PostgresAdapter, PostgresAdapterError, PostgresMigration};
use uuid::Uuid;

struct MyExampleMigration;
migration!(
    MyExampleMigration,
    "4885e8ab-dafa-4d76-a565-2dee8b04ef60",
    [],
    "An example migration without dependencies.");

impl PostgresMigration for MyExampleMigration {
    fn up(&self, transaction: &mut Transaction) -> Result<(), PostgresAdapterError> {
        transaction.execute("CREATE TABLE my_example (id integer PRIMARY KEY);", &[])?;
        Ok(())
    }

    fn down(&self, transaction: &mut Transaction) -> Result<(), PostgresAdapterError> {
        transaction.execute("DROP TABLE my_example;", &[])?;
        Ok(())
    }
}

fn main() {
    let mut conn = Client::connect(
        "postgresql://postgres@localhost",
        NoTls).unwrap();
    conn.execute("SET search_path = pg_temp", &[]).unwrap();
    let adapter = PostgresAdapter::new(&mut conn, None);

    let mut migrator = Migrator::new(adapter);

    let migration = Box::new(MyExampleMigration {});
    migrator.register(migration);
    migrator.up(None);
}

Structs

PostgresAdapter

Adapter between schemer and PostgreSQL.

Traits

PostgresMigration

PostgreSQL-specific trait for schema migrations.

Type Definitions

PostgresAdapterError