patterntesting.runtime.monitor.db
Class ConnectionMonitor

java.lang.Object
  patterntesting.runtime.monitor.db.ConnectionMonitor

All Implemented Interfaces:

ConnectionMonitorMBean

Direct Known Subclasses:

ConnectionMonitor

public class ConnectionMonitor
extends Object
implements ConnectionMonitorMBean

This is the monitor class for the ProxyConnection which monitors the different newInstance() and close() call. So you can ask this class how many and which connections are open.

The instance of this class is automatically registered as MBean as soon as a ProxyConnection is used.

Note: Since 1.4.2 this class was moved from package "patterntesting.runtime.db" to here.

Since:

1.3 (07.10.2012)

Version:

$Revision: 1.5 $

Author:

oliver (ob@aosd.de)

Constructor Summary

protected

ConnectionMonitor() No need to instantiate it - we provide only some services.

Method Summary

static void	addConnection(ProxyConnection proxyConnection) Adds the connection.
static void	assertConnectionsClosed() Assert that all connections are closed.
static StackTraceElement	getCallerOf(Connection connection) Gets the caller of the given connection.
StackTraceElement[]	getCallers() Gets the callers.
TabularData	getCallerStacktraces() Gets the caller stacktraces of all connections.
int	getClosedConnections() Gets the closed connections.
static ConnectionMonitorMBean	getInstance() Yes, it is a Singleton because it offers only some services.
StackTraceElement	getLastCaller() Gets the caller which opens the last connection.
StackTraceElement[]	getLastCallerStacktrace() Gets the stacktrace of the caller which opens the last connection.
static Connection	getMonitoredConnection(Connection connection) If you want to monitor the connection use this method.
int	getOpenConnections() Gets the number of open connections.
int	getSumOfConnections() Gets the total sum of open and closed connections.
static void	removeConnection(ProxyConnection proxyConnection) Removes the connection.
String	toString() To string.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConnectionMonitor

protected ConnectionMonitor()

No need to instantiate it - we provide only some services. The constructor is protected because it is still used by the (deprecated) ConnectionMonitor in patterntesting.runtime.db.

Method Detail

getInstance

public static ConnectionMonitorMBean getInstance()

Yes, it is a Singleton because it offers only some services. So we don't need the object twice.

Returns:

the only instance

getMonitoredConnection

public static Connection getMonitoredConnection(Connection connection)

If you want to monitor the connection use this method.

Parameters:

connection - the original connection

Returns:

a proxy for the connection

addConnection

public static void addConnection(ProxyConnection proxyConnection)

Adds the connection.

Parameters:

proxyConnection - the proxy connection

removeConnection

public static void removeConnection(ProxyConnection proxyConnection)

Removes the connection.

Parameters:

proxyConnection - the proxy connection

getCallerOf

public static StackTraceElement getCallerOf(Connection connection)

Gets the caller of the given connection.

Parameters:

connection - the connection

Returns:

the caller of

getCallers

public StackTraceElement[] getCallers()

Gets the callers.

Specified by:

getCallers in interface ConnectionMonitorMBean

Returns:

the callers

See Also:

ConnectionMonitorMBean.getCallers()

getLastCallerStacktrace

public StackTraceElement[] getLastCallerStacktrace()

Gets the stacktrace of the caller which opens the last connection.

Specified by:

getLastCallerStacktrace in interface ConnectionMonitorMBean

Returns:

the all caller

getCallerStacktraces

public TabularData getCallerStacktraces()
                                 throws OpenDataException

Gets the caller stacktraces of all connections.

Specified by:

getCallerStacktraces in interface ConnectionMonitorMBean

Returns:

stacktraces of all callers

Throws:

OpenDataException - the open data exception

getLastCaller

public StackTraceElement getLastCaller()

Gets the caller which opens the last connection.

Specified by:

getLastCaller in interface ConnectionMonitorMBean

Returns:

the all caller

getOpenConnections

public int getOpenConnections()

Gets the number of open connections.

Specified by:

getOpenConnections in interface ConnectionMonitorMBean

Returns:

the open count

See Also:

ConnectionMonitorMBean.getOpenConnections()

getClosedConnections

public int getClosedConnections()

Gets the closed connections.

Specified by:

getClosedConnections in interface ConnectionMonitorMBean

Returns:

the closed connections

Since:

1.4.1

getSumOfConnections

public int getSumOfConnections()

Gets the total sum of open and closed connections.

Specified by:

getSumOfConnections in interface ConnectionMonitorMBean

Returns:

the sum of connections

Since:

1.4.1

assertConnectionsClosed

public static void assertConnectionsClosed()

Assert that all connections are closed.

toString

public String toString()

To string.

Overrides:

toString in class Object

Returns:

the string

See Also:

Object.toString()