org.logicalcobwebs.proxool

类 CompositeConnectionListener

java.lang.Object

org.logicalcobwebs.proxool.util.AbstractListenerContainer

org.logicalcobwebs.proxool.CompositeConnectionListener

所有已实现的接口:

ConnectionListenerIF, ListenerContainerIF

public class CompositeConnectionListener
extends AbstractListenerContainer
implements ConnectionListenerIF

A ConnectionListenerIF that keeps a list of ConnectionListenerIFs and notifies them in a thread safe manner. It also implements ListenerContainerIF which provides methods for adding and removing listeners.

从以下版本开始:

Proxool 0.7

版本:

$Revision: 1.8 $, $Date: 2007/01/25 23:38:24 $

作者:

Christian Nedregaard (christian_nedregaard@email.com), $Author: billhorsman $ (current maintainer)

字段概要

从接口继承的字段 org.logicalcobwebs.proxool.ConnectionListenerIF

FATAL_SQL_EXCEPTION_DETECTED, HOUSE_KEEPER_TEST_FAIL, MANUAL_EXPIRY, MAXIMUM_ACTIVE_TIME_EXPIRED, MAXIMUM_CONNECTION_LIFETIME_EXCEEDED, RESET_FAIL, SHUTDOWN, VALIDATION_FAIL

构造器概要

构造器

构造器和说明
CompositeConnectionListener()

方法概要

限定符和类型	方法和说明
void	onBirth(Connection connection) Happens everytime we create a new connection.
void	onDeath(Connection connection, int reasonCode) Happens just before we expire a connection.
void	onExecute(String command, long elapsedTime) Happens after every successful execute.
void	onFail(String command, Exception exception) Happens everytime an exception was thrown during an execute method Note that the command is not fully implemented at this stage.

从类继承的方法 org.logicalcobwebs.proxool.util.AbstractListenerContainer

addListener, getListeners, isEmpty, removeListener

从类继承的方法 java.lang.Object

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

构造器详细资料

CompositeConnectionListener

public CompositeConnectionListener()

方法详细资料

onBirth

public void onBirth(Connection connection)
             throws SQLException

从接口复制的说明: ConnectionListenerIF

Happens everytime we create a new connection. You can use this to allocate resources to a connection that might be useful during the lifetime of the connection.

指定者:

onBirth 在接口中 ConnectionListenerIF

参数:

connection - the connection that has just been created

抛出:

SQLException - if anything goes wrong (which will then be logged but ignored)

另请参阅:

ConnectionListenerIF.onBirth(Connection)

onDeath

public void onDeath(Connection connection,
                    int reasonCode)
             throws SQLException

从接口复制的说明: ConnectionListenerIF

Happens just before we expire a connection. You can use this to reclaim resources from a connection.

指定者:

onDeath 在接口中 ConnectionListenerIF

参数:

connection - the connection that is about to expire

reasonCode - ConnectionListenerIF.MAXIMUM_ACTIVE_TIME_EXPIRED, ConnectionListenerIF.HOUSE_KEEPER_TEST_FAIL, ConnectionListenerIF.FATAL_SQL_EXCEPTION_DETECTED, ConnectionListenerIF.MANUAL_EXPIRY, ConnectionListenerIF.MAXIMUM_CONNECTION_LIFETIME_EXCEEDED, ConnectionListenerIF.RESET_FAIL, ConnectionListenerIF.SHUTDOWN, or ConnectionListenerIF.VALIDATION_FAIL

抛出:

SQLException - if anything goes wrong (which will then be logged but ignored)

另请参阅:

ConnectionListenerIF.onDeath(java.sql.Connection, int)

onExecute

public void onExecute(String command,
                      long elapsedTime)

从接口复制的说明: ConnectionListenerIF

Happens after every successful execute. Note that the command is not fully implemented at this stage. At some point it might represent the SQL that is sent to the database (or the procedure call that was used).

指定者:

onExecute 在接口中 ConnectionListenerIF

参数:

command - what command was being executed

elapsedTime - how long the call took (in milliseconds)

另请参阅:

ConnectionListenerIF.onExecute(String, long)

onFail

public void onFail(String command,
                   Exception exception)

从接口复制的说明: ConnectionListenerIF

Happens everytime an exception was thrown during an execute method Note that the command is not fully implemented at this stage. At some point it might represent the SQL that is sent to the database (or the procedure call that was used).

指定者:

onFail 在接口中 ConnectionListenerIF

参数:

command - what command was being executed

exception - what exception was thrown

另请参阅:

ConnectionListenerIF.onFail(String, Exception)