ra.db.connection

Class OnceConnection

java.lang.Object

ra.db.connection.OnceConnection

All Implemented Interfaces:

java.lang.AutoCloseable, DatabaseConnection

public class OnceConnection
extends java.lang.Object
implements DatabaseConnection

Provide execute SQL statement using a database connection, and the connection is not thread safe. The connection is not keeping alive.

Author:

Ray Li

Nested Class Summary

Nested classes/interfaces inherited from interface ra.db.DatabaseConnection

DatabaseConnection.ConnectionFunction

Constructor Summary

Constructors

Constructor and Description
OnceConnection(DatabaseParameters param) Initialize.

Method Summary

Modifier and Type	Method and Description
void	close()
boolean	connect() Get the connection state.
java.sql.Connection	getConnection() Get current database connection.
int	getConnection(DatabaseConnection.ConnectionFunction consumer) Get current database connection.
DatabaseParameters	getParam() Returns database properties settings.
boolean	isLive() Returns database state whether available.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface ra.db.DatabaseConnection

connectIf, createStatementExecutor, loadDriveInstance, tryGetConnection

Constructor Detail

OnceConnection

public OnceConnection(DatabaseParameters param)

Initialize.

Parameters:

param - database settings.

Method Detail

getParam

public DatabaseParameters getParam()

Description copied from interface: DatabaseConnection

Returns database properties settings.

Specified by:

getParam in interface DatabaseConnection

Returns:

DatabaseParameters

getConnection

public java.sql.Connection getConnection()

Description copied from interface: DatabaseConnection

Get current database connection.

Specified by:

getConnection in interface DatabaseConnection

Returns:

Database original connection.

getConnection

public int getConnection(DatabaseConnection.ConnectionFunction consumer)
                  throws RaSqlException,
                         RaConnectException

Description copied from interface: DatabaseConnection

Get current database connection.

Specified by:

getConnection in interface DatabaseConnection

Parameters:

consumer - consumer

Returns:

Database original connection.

Throws:

RaSqlException - RaSqlException

RaConnectException - if can't to connect database.

connect

public boolean connect()

Get the connection state.

Specified by:

connect in interface DatabaseConnection

Returns:

Connection state.

isLive

public boolean isLive()

Description copied from interface: DatabaseConnection

Returns database state whether available.

Specified by:

isLive in interface DatabaseConnection

Returns:

database state

close

public void close()

Specified by:

close in interface java.lang.AutoCloseable