MySQLConnection

Connects this object to the database. Connection objects are not necessarily created with a connection to the database so you might have to call this method to be able to run queries against it.

Disconnects this object. You should discard this object after calling this method. No more queries will be accepted.

The event loop group to be used for scheduling.

Checks whether we are still connected to the database.

Implementors should decide here what they want to do when a timeout occur

Sends a prepared statement to the database. Prepared statements are special statements that are pre-compiled by the database to run faster, they also allow you to avoid SQL injection attacks by not having to concatenate strings from possibly unsafe sources (like users) and sending them directy to the database.

When sending a prepared statement, you can insert ? signs in your statement and then provide values at the method call 'values' parameter, as in:

 connection.sendPreparedStatement( "SELECT * FROM users WHERE users.login = ?", Array( "john-doe" ) )

As you are using the ? as the placeholder for the value, you don't have to perform any kind of manipulation to the value, just provide it as is and the database will clean it up. You must provide as many parameters as you have provided placeholders, so, if your query is as "INSERT INTO users (login,email) VALUES (?,?)" you have to provide an array with at least two values, as in:

 Array("john-doe", "[email protected]")

You can still use this method if your statement doesn't take any parameters, the default is an empty collection.

Sends a statement to the database. The statement can be anything your database can execute. Not all statements will return a collection of rows, so check the returned object if there are rows available.

Returns a string representation of the object.

The default representation is platform dependent.

Executes an (asynchronous) function within a transaction block. If the function completes successfully, the transaction is committed, otherwise it is aborted.

We need this property as isClosed takes time to complete and we don't want the connection to be used again.