org.xerial.db.sql
Class ConnectionPoolImpl

java.lang.Object
  org.xerial.db.sql.ConnectionPoolImpl

All Implemented Interfaces:

ConnectionPool

public class ConnectionPoolImpl
extends Object
implements ConnectionPool

ConnectionPoolImpl class holds established JDBC connections. For each time you get a connection, you must return it to the ConnectionPoolImpl by calling returnConnection(connection).

Author:

leo

Constructor Summary

ConnectionPoolImpl(String JDBCDriver, String databaseAddress)
Create an connection pool, in which only a single connection is pooled This constructer is suited for memory database usage, which demands the same connection must always be returned to the user

ConnectionPoolImpl(String JDBCDriver, String databaseAddress, int numConnection)

ConnectionPoolImpl(String JDBCDriver, String databaseAddress, String user, String pass)

ConnectionPoolImpl(String JDBCDriver, String databaseAddress, String user, String pass, int numConnection)

Method Summary

void	add(Connection establishedConnection)
void	closeAll()
void	establishConnections()
void	establishConnections(String user, String pass)
Connection	getConnection()
void	returnConnection(Connection leasedConnection)

Methods inherited from class java.lang.Object

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

Constructor Detail

ConnectionPoolImpl

public ConnectionPoolImpl(String JDBCDriver,
                          String databaseAddress)
                   throws DBException

Create an connection pool, in which only a single connection is pooled This constructer is suited for memory database usage, which demands the same connection must always be returned to the user

Parameters:

JDBCdriver - driver name: e.g. "org.sqlite.JDBC"

databaseAddress - database address, e.g. "jdbc:sqlite:db.sqilte3"

Throws:

DBException - when loading the driver or to establish connections fail

ConnectionPoolImpl

public ConnectionPoolImpl(String JDBCDriver,
                          String databaseAddress,
                          int numConnection)
                   throws DBException

Parameters:

JDBCdriver - driver name: e.g. "org.sqlite.JDBC"

databaseAddress - database address, e.g. "jdbc:sqlite:db.sqilte3"

the - number of connections to keep

Throws:

DBException - when loading the driver or to establish connections fail

ConnectionPoolImpl

public ConnectionPoolImpl(String JDBCDriver,
                          String databaseAddress,
                          String user,
                          String pass)
                   throws DBException

Throws:

DBException

ConnectionPoolImpl

public ConnectionPoolImpl(String JDBCDriver,
                          String databaseAddress,
                          String user,
                          String pass,
                          int numConnection)
                   throws DBException

Throws:

DBException

Method Detail

establishConnections

public void establishConnections(String user,
                                 String pass)
                          throws DBException

Throws:

DBException

establishConnections

public void establishConnections()
                          throws DBException

Throws:

DBException

add

public void add(Connection establishedConnection)

getConnection

public Connection getConnection()
                         throws DBException

Specified by:

getConnection in interface ConnectionPool

Throws:

DBException

returnConnection

public void returnConnection(Connection leasedConnection)

Specified by:

returnConnection in interface ConnectionPool

closeAll

public void closeAll()
              throws DBException

Specified by:

closeAll in interface ConnectionPool

Throws:

DBException