org.eclipse.persistence.platform.server

Class JMXServerPlatformBase

java.lang.Object

org.eclipse.persistence.platform.server.ServerPlatformBase

org.eclipse.persistence.platform.server.JMXServerPlatformBase

All Implemented Interfaces:

ServerPlatform

Direct Known Subclasses:

GlassfishPlatform, JBossPlatform, WebLogicPlatform, WebSpherePlatform

public abstract class JMXServerPlatformBase
extends ServerPlatformBase

PUBLIC: Subclass of org.eclipse.persistence.platform.server.ServerPlatformBase in support of the JMXEnabledPlatform interface

This is the abstract superclass of all platforms for all servers that contain a subclass that implements the JMXEnabledPlatform interface. Each DatabaseSession contains an instance of the receiver, to help the DatabaseSession determine:

• Whether or not to enable JTA (external transaction control)
• How to register/unregister for runtime services (JMX/MBean)
• Whether or not to enable runtime services

Subclasses already exist to provide configurations for Oc4J, WebLogic, JBoss, NetWeaver, GlassFish and WebSphere.

If the versioned platform subclass is JMX enabled by EclipseLink (registers MBeans) then that server platform must implement the JMXEnabledPlatform interface To provide some different behavior than the provided ServerPlatform(s), we recommend subclassing org.eclipse.persistence.platform.server.JMXServerPlatformBase (or a subclass), and overriding:

• JMXEnabledPlatform.prepareServerSpecificServicesMBean()

for the desired behavior.

Since:

EclipseLink 2.1.1

See Also:

ServerPlatformBase

Field Summary

Fields

Modifier and Type	Field and Description
static int	JMX_MBEANSERVER_INDEX_DEFAULT_FOR_MULTIPLE_SERVERS The default indexed MBeanServer instance to use when multiple MBeanServer instances exist on the platform - usually only in JBoss
static java.lang.String	JMX_REGISTRATION_PREFIX This is the prefix for all MBeans that are registered with their specific session name appended

Fields inherited from class org.eclipse.persistence.platform.server.ServerPlatformBase

DEFAULT_SERVER_NAME_AND_VERSION, JMX_REGISTER_DEV_MBEAN_PROPERTY, JMX_REGISTER_RUN_MBEAN_PROPERTY

Constructor Summary

Constructors

Constructor and Description
JMXServerPlatformBase(DatabaseSession newDatabaseSession) INTERNAL: Default Constructor: Initialize so that runtime services and JTA are enabled.

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.String	getApplicationName() INTERNAL: getApplicationName(): Answer the name of the module (EAR name) that this session is associated with.
javax.management.MBeanServer	getMBeanServer() INTERNAL: Return the MBeanServer to be used for MBean registration and deregistration.
java.lang.String	getModuleName() INTERNAL: getModuleName(): Answer the name of the context-root of the application that this session is associated with.
void	serverSpecificRegisterMBean() INTERNAL: serverSpecificRegisterMBean(): Server specific implementation of the creation and deployment of the JMX MBean to provide runtime services for my databaseSession.
void	serverSpecificUnregisterMBean() INTERNAL: serverSpecificUnregisterMBean(): Server specific implementation of the de-registration of the JMX MBean from its server during session logout.
void	setApplicationName(java.lang.String aName) INTERNAL:

Methods inherited from class org.eclipse.persistence.platform.server.ServerPlatformBase

clearStatementCache, configureProfiler, disableJTA, disableRuntimeServices, enableRuntimeServices, getDatabaseSession, getExternalTransactionControllerClass, getNewTempClassLoader, getServerLog, getServerNameAndVersion, getThreadPool, getThreadPoolSize, initializeExternalTransactionController, isCMP, isJTAEnabled, isRuntimeServicesEnabled, isRuntimeServicesEnabledDefault, launchContainerRunnable, registerMBean, setExternalTransactionControllerClass, setIsCMP, setThreadPool, setThreadPoolSize, shouldUseDriverManager, shutdown, unregisterMBean, unwrapConnection, wasFailureCommunicationBased

Methods inherited from class java.lang.Object

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

Field Detail

JMX_REGISTRATION_PREFIX

public static final java.lang.String JMX_REGISTRATION_PREFIX

This is the prefix for all MBeans that are registered with their specific session name appended

See Also:

Constant Field Values

JMX_MBEANSERVER_INDEX_DEFAULT_FOR_MULTIPLE_SERVERS

public static final int JMX_MBEANSERVER_INDEX_DEFAULT_FOR_MULTIPLE_SERVERS

The default indexed MBeanServer instance to use when multiple MBeanServer instances exist on the platform - usually only in JBoss

See Also:

Constant Field Values

Constructor Detail

JMXServerPlatformBase

public JMXServerPlatformBase(DatabaseSession newDatabaseSession)

INTERNAL: Default Constructor: Initialize so that runtime services and JTA are enabled.

Method Detail

getMBeanServer

public javax.management.MBeanServer getMBeanServer()

INTERNAL: Return the MBeanServer to be used for MBean registration and deregistration.
This MBeanServer reference is lazy loaded and cached on the platform.
There are multiple ways of getting the MBeanServer

1) MBeanServerFactory static function - working for 3 of 4 servers WebSphere, JBoss and Glassfish in a generic way
- JBoss returns 2 MBeanServers in the List - but one of them has a null domain - we don't use that one
- WebLogic may return 2 MBeanServers - in that case we want to register with the one containing the "com.bea" tree 2) ManagementFactory static function - what is the difference in using this one over the one returning a List of servers
3) JNDI lookup
4) Direct server specific native API

We are using method (1)

Returns:

the JMX specification MBeanServer

serverSpecificRegisterMBean

public void serverSpecificRegisterMBean()

INTERNAL: serverSpecificRegisterMBean(): Server specific implementation of the creation and deployment of the JMX MBean to provide runtime services for my databaseSession. Default is to do nothing. This should be subclassed if required. For platform classes that override the JMXEnabledPlatform - the services MBean is created at platform construction for use during MBean registration here.

Overrides:

serverSpecificRegisterMBean in class ServerPlatformBase

See Also:

ServerPlatformBase.isRuntimeServicesEnabled(), ServerPlatformBase.disableRuntimeServices(), ServerPlatformBase.registerMBean()

serverSpecificUnregisterMBean

public void serverSpecificUnregisterMBean()

INTERNAL: serverSpecificUnregisterMBean(): Server specific implementation of the de-registration of the JMX MBean from its server during session logout.

Overrides:

serverSpecificUnregisterMBean in class ServerPlatformBase

See Also:

ServerPlatformBase.isRuntimeServicesEnabled(), ServerPlatformBase.disableRuntimeServices()

getModuleName

public java.lang.String getModuleName()

INTERNAL: getModuleName(): Answer the name of the context-root of the application that this session is associated with. Answer "unknown" if there is no module name available. Default behavior is to return "unknown" - we override this behavior here for JBoss. There are 4 levels of implementation. 1) use the property override jboss.moduleName, or 2) perform a reflective jboss.work.executeThreadRuntime.getModuleName() call, or 3) extract the moduleName:persistence_unit from the server specific classloader string representation, or 3) defer to superclass - usually return "unknown"

Specified by:

getModuleName in interface ServerPlatform

Overrides:

getModuleName in class ServerPlatformBase

Returns:

String moduleName

getApplicationName

public java.lang.String getApplicationName()

INTERNAL: getApplicationName(): Answer the name of the module (EAR name) that this session is associated with. Answer "unknown" if there is no application name available. Default behavior is to return "unknown" There are 4 levels of implementation. 1) use the property override weblogic.applicationName, or 2) perform a reflective weblogic.work.executeThreadRuntime.getApplicationName() call, or 3) extract the moduleName:persistence_unit from the application classloader string representation, or 3) defer to this superclass - usually return "unknown"

Returns:

String applicationName

See Also:

JMXEnabledPlatform

setApplicationName

public void setApplicationName(java.lang.String aName)

INTERNAL:

Parameters:

aName -