| Safe Haskell | None |
|---|---|
| Language | Haskell98 |
Database.Persist.MySQL
Contents
Description
A MySQL backend for persistent.
- withMySQLPool :: (MonadIO m, MonadLogger m, MonadBaseControl IO m, IsSqlBackend backend) => MySQLConnectInfo -> Int -> (Pool backend -> m a) -> m a
- withMySQLConn :: (MonadBaseControl IO m, MonadIO m, MonadLogger m, IsSqlBackend backend) => MySQLConnectInfo -> (backend -> m a) -> m a
- createMySQLPool :: (MonadBaseControl IO m, MonadIO m, MonadLogger m, IsSqlBackend backend) => MySQLConnectInfo -> Int -> m (Pool backend)
- module Database.Persist.Sql
- data MySQLConnectInfo
- mkMySQLConnectInfo :: String -> String -> String -> String -> MySQLConnectInfo
- data MySQLConf
- mkMySQLConf :: MySQLConnectInfo -> Int -> MySQLConf
- mockMigration :: Migration -> IO ()
Documentation
Arguments
| :: (MonadIO m, MonadLogger m, MonadBaseControl IO m, IsSqlBackend backend) | |
| => MySQLConnectInfo | Connection information. |
| -> Int | Number of connections to be kept open in the pool. |
| -> (Pool backend -> m a) | Action to be executed that uses the connection pool. |
| -> m a |
Create a MySQL connection pool and run the given action.
The pool is properly released after the action finishes using
it. Note that you should not use the given ConnectionPool
outside the action since it may be already been released.
Arguments
| :: (MonadBaseControl IO m, MonadIO m, MonadLogger m, IsSqlBackend backend) | |
| => MySQLConnectInfo | Connection information. |
| -> (backend -> m a) | Action to be executed that uses the connection. |
| -> m a |
Same as withMySQLPool, but instead of opening a pool
of connections, only one connection is opened.
Arguments
| :: (MonadBaseControl IO m, MonadIO m, MonadLogger m, IsSqlBackend backend) | |
| => MySQLConnectInfo | Connection information. |
| -> Int | Number of connections to be kept open in the pool. |
| -> m (Pool backend) |
Create a MySQL connection pool. Note that it's your
responsibility to properly close the connection pool when
unneeded. Use withMySQLPool for automatic resource control.
module Database.Persist.Sql
Arguments
| :: String | hostname |
| -> String | username |
| -> String | password |
| -> String | database |
| -> MySQLConnectInfo |
Public constructor for MySQLConnectInfo.
Information required to connect to a MySQL database
using persistent's generic facilities. These values are the
same that are given to withMySQLPool.
Arguments
| :: MySQLConnectInfo | The connection information. |
| -> Int | How many connections should be held on the connection pool. |
| -> MySQLConf |
Public constructor for MySQLConf.
mockMigration :: Migration -> IO () Source #
Mock a migration even when the database is not present. This function will mock the migration for a database even when the actual database isn't already present in the system.