org.eclipse.persistence.sessions.factories

Class SessionManager

java.lang.Object

org.eclipse.persistence.sessions.factories.SessionManager

public class SessionManager
extends java.lang.Object

Purpose: Global session location.

Description: This allows for a global session local which can be accessed globally from other classes. This is needed for EJB data stores as they must have a globally accessible place to access the session. This can be by EJB session beans, BMP beans and CMP beans as well as Servlets and other three-tier services.

Responsibilities:

• Store a global session.
• Allow the storage of alternative sessions as well.

Author:

James Sutherland

Since:

TOPLink/Java 3.0

Field Summary

Fields

Modifier and Type	Field and Description
protected org.eclipse.persistence.internal.sessions.AbstractSession	defaultSession
protected static SessionManager	manager
protected java.util.concurrent.ConcurrentMap<java.lang.String,Session>	sessions
protected static boolean	shouldPerformDTDValidation
protected static boolean	shouldUseSchemaValidation Allow for usage of schema validation to be configurable.

Constructor Summary

Constructors

Constructor and Description
SessionManager() PUBLIC: The default constructor to create a new session manager.

Method Summary

Modifier and Type	Method and Description
void	addSession(Session session) INTERNAL: Add an named session to the hashtable.
void	addSession(java.lang.String sessionName, Session session) ADVANCED: add an named session to the hashtable.
void	destroy() PUBLIC: Destroy current session manager instance.
void	destroyAllSessions() INTERNAL: Destroy all sessions held onto by this manager.
void	destroySession(java.lang.String sessionName) INTERNAL: Destroy the session defined by sessionName on this manager.
static java.util.Collection<SessionManager>	getAllManagers() ADVANCED: Return all session managers.
Session	getDefaultSession() PUBLIC: Return the default session.
org.eclipse.persistence.internal.sessions.factories.model.SessionConfigs	getInternalMWConfigObjects(java.lang.String resourceName, java.lang.ClassLoader objectClassLoader) INTERNAL: This method is to be used to load config objects for the Mapping Workbench only.
org.eclipse.persistence.internal.sessions.factories.model.SessionConfigs	getInternalMWConfigObjects(java.lang.String resourceName, java.lang.ClassLoader objectClassLoader, boolean validate) INTERNAL: This method is to be used to load config objects for the Mapping Workbench only.
static SessionManager	getManager() PUBLIC: Return the session manager for current context.
org.eclipse.persistence.internal.sessions.AbstractSession	getSession(java.lang.String sessionName) PUBLIC: Return the session by name.
org.eclipse.persistence.internal.sessions.AbstractSession	getSession(java.lang.String sessionName, boolean shouldLoginSession) PUBLIC: Return the session by name.
org.eclipse.persistence.internal.sessions.AbstractSession	getSession(java.lang.String sessionName, boolean shouldLoginSession, boolean shouldRefreshSession) PUBLIC: Return the session by name.
org.eclipse.persistence.internal.sessions.AbstractSession	getSession(java.lang.String sessionName, java.lang.ClassLoader objectClassLoader) PUBLIC: Return the session by name.
org.eclipse.persistence.internal.sessions.AbstractSession	getSession(java.lang.String sessionName, java.lang.Object objectBean) PUBLIC: Return the session by name, using the classloader of the Object specified.
org.eclipse.persistence.internal.sessions.AbstractSession	getSession(java.lang.String sessionName, java.lang.String filename) PUBLIC: Return the session by name, in the file specified.
org.eclipse.persistence.internal.sessions.AbstractSession	getSession(java.lang.String sessionName, java.lang.String filename, java.lang.ClassLoader classLoader) PUBLIC: Return the session by name, in the file specified, using the class loader to find the resource.
org.eclipse.persistence.internal.sessions.AbstractSession	getSession(XMLSessionConfigLoader loader) PUBLIC: Return the session by name, loading the configuration from the file specified in the loader, using the loading options provided on the loader.
org.eclipse.persistence.internal.sessions.AbstractSession	getSession(XMLSessionConfigLoader loader, java.lang.String sessionName, java.lang.ClassLoader objectClassLoader) PUBLIC: Return the session by name, loading the configuration from the file specified in the XMLSessionConfigLoader.
org.eclipse.persistence.internal.sessions.AbstractSession	getSession(XMLSessionConfigLoader loader, java.lang.String sessionName, java.lang.ClassLoader objectClassLoader, boolean shouldLoginSession, boolean shouldRefreshSession) PUBLIC: Return the session by name, loading the configuration from the file specified in the loader.
org.eclipse.persistence.internal.sessions.AbstractSession	getSession(XMLSessionConfigLoader loader, java.lang.String sessionName, java.lang.ClassLoader objectClassLoader, boolean shouldLoginSession, boolean shouldRefreshSession, boolean shouldCheckClassLoader) PUBLIC: Return the session by name, loading the configuration from the file specified in the loader.
java.util.concurrent.ConcurrentMap<java.lang.String,Session>	getSessions() INTERNAL: Return a hashtable on all sessions.
protected static SessionManager	initializeManager() INTERNAL: Initialize the singleton session manager.
void	setDefaultSession(Session defaultSession) PUBLIC: Set the default session.
static void	setManager(SessionManager theManager) INTERNAL: Set the singleton session manager.
void	setSessions(java.util.concurrent.ConcurrentMap sessions) INTERNAL: Set a hashtable of all sessions
static void	setShouldUseSchemaValidation(boolean useSchemaValidation) PUBLIC: Set if schema validation will be used when parsing the 10g (10.1.3) sessions XML.
static boolean	shouldUseSchemaValidation() PUBLIC: Return if schema validation will be used when parsing the 10g (10.1.3) sessions XML.

Methods inherited from class java.lang.Object

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

Field Detail

shouldUseSchemaValidation

protected static boolean shouldUseSchemaValidation

Allow for usage of schema validation to be configurable.

manager

protected static volatile SessionManager manager

defaultSession

protected org.eclipse.persistence.internal.sessions.AbstractSession defaultSession

sessions

protected java.util.concurrent.ConcurrentMap<java.lang.String,Session> sessions

shouldPerformDTDValidation

protected static boolean shouldPerformDTDValidation

Constructor Detail

SessionManager

public SessionManager()

PUBLIC: The default constructor to create a new session manager.

Method Detail

shouldUseSchemaValidation

public static boolean shouldUseSchemaValidation()

PUBLIC: Return if schema validation will be used when parsing the 10g (10.1.3) sessions XML.

Returns:

true if schema validation will be used when parsing the 10g (10.1.3) sessions XML, false otherwise

setShouldUseSchemaValidation

public static void setShouldUseSchemaValidation(boolean useSchemaValidation)

PUBLIC: Set if schema validation will be used when parsing the 10g (10.1.3) sessions XML. By default schema validation is on, but can be turned off if validation problems occur, or to improve parsing performance.

Parameters:

useSchemaValidation - true if schema validation should be used when parsing the 10g (10.1.3) sessions XML, false otherwise

addSession

public void addSession(Session session)

INTERNAL: Add an named session to the hashtable. Session must have a name prior to setting into session manager.

Parameters:

session - session to be added to the session manager

addSession

public void addSession(java.lang.String sessionName,
                       Session session)

ADVANCED: add an named session to the hashtable.

Parameters:

sessionName - session name

session - session to be added to the session manager

getDefaultSession

public Session getDefaultSession()

PUBLIC: Return the default session. The session configuration is stored in a sessions.xml file in a directory on your classpath. Other sessions are supported through the getSession by name API.

Returns:

default session

destroy

public void destroy()

PUBLIC: Destroy current session manager instance.

destroySession

public void destroySession(java.lang.String sessionName)

INTERNAL: Destroy the session defined by sessionName on this manager.

Parameters:

sessionName - name of the session to be destroyed

destroyAllSessions

public void destroyAllSessions()

INTERNAL: Destroy all sessions held onto by this manager.

getInternalMWConfigObjects

public org.eclipse.persistence.internal.sessions.factories.model.SessionConfigs getInternalMWConfigObjects(java.lang.String resourceName,
                                                                                                           java.lang.ClassLoader objectClassLoader)

INTERNAL: This method is to be used to load config objects for the Mapping Workbench only. Do not call this method.

Parameters:

resourceName - resource to load

objectClassLoader - ClassLoader used to load the resource

Returns:

parsed session configuration

getInternalMWConfigObjects

public org.eclipse.persistence.internal.sessions.factories.model.SessionConfigs getInternalMWConfigObjects(java.lang.String resourceName,
                                                                                                           java.lang.ClassLoader objectClassLoader,
                                                                                                           boolean validate)

INTERNAL: This method is to be used to load config objects for the Mapping Workbench only. Do not call this method.

Parameters:

resourceName - resource to load

objectClassLoader - ClassLoader used to load the resource

validate - whether to validate the resource passed in

Returns:

parsed session configuration

getManager

public static SessionManager getManager()

PUBLIC: Return the session manager for current context. This allow global access to a set of named sessions.

Returns:

the session manager for current context

getAllManagers

public static java.util.Collection<SessionManager> getAllManagers()

ADVANCED: Return all session managers. This allows global access to all instances of SessionManager.

Returns:

all SessionManager instances

initializeManager

protected static SessionManager initializeManager()

INTERNAL: Initialize the singleton session manager.

Returns:

initialized session manager

getSession

public org.eclipse.persistence.internal.sessions.AbstractSession getSession(java.lang.String sessionName)

PUBLIC: Return the session by name.

Parameters:

sessionName - session name

Returns:

session with given session name

getSession

public org.eclipse.persistence.internal.sessions.AbstractSession getSession(java.lang.String sessionName,
                                                                            boolean shouldLoginSession)

PUBLIC: Return the session by name. Log the session in only if specified.

Parameters:

sessionName - session name

shouldLoginSession - whether the session should be logged in

Returns:

session with given session name

getSession

public org.eclipse.persistence.internal.sessions.AbstractSession getSession(java.lang.String sessionName,
                                                                            boolean shouldLoginSession,
                                                                            boolean shouldRefreshSession)

PUBLIC: Return the session by name. Log the session in only if specified. Refresh the session only if specified.

Parameters:

sessionName - session name

shouldLoginSession - whether the session should be logged in

shouldRefreshSession - whether the session should be refreshed

Returns:

session with given session name

getSession

public org.eclipse.persistence.internal.sessions.AbstractSession getSession(java.lang.String sessionName,
                                                                            java.lang.Object objectBean)

PUBLIC: Return the session by name, using the classloader of the Object specified. This method is used in older versions of BMP support This method will cause the class loader of the provided object to be compared with the classloader used to load the original session of this name, with this classloader. If they are not the same then the session will be refreshed.

Parameters:

sessionName - session name

objectBean - object to get the ClassLoader from

Returns:

session with given session name

getSession

public org.eclipse.persistence.internal.sessions.AbstractSession getSession(java.lang.String sessionName,
                                                                            java.lang.String filename)

PUBLIC: Return the session by name, in the file specified. Login the session.

Parameters:

sessionName - session name

filename - file name containing session definition

Returns:

session with given session name

getSession

public org.eclipse.persistence.internal.sessions.AbstractSession getSession(java.lang.String sessionName,
                                                                            java.lang.String filename,
                                                                            java.lang.ClassLoader classLoader)

PUBLIC: Return the session by name, in the file specified, using the class loader to find the resource. This method will cause the class loader to be compared with the classloader used to load the original session of this name. If they are not the same then the session will be refreshed.

Parameters:

sessionName - session name

filename - file name containing session definition

classLoader - ClassLoader used to load the original session

Returns:

session with given session name

getSession

public org.eclipse.persistence.internal.sessions.AbstractSession getSession(java.lang.String sessionName,
                                                                            java.lang.ClassLoader objectClassLoader)

PUBLIC: Return the session by name. Provide the class loader for loading the project, the configuration file and the deployed classes. E.g. SessionManager.getManager().getSession("mySession", MySessionBean.getClassLoader()); This method will cause the class loader to be compared with the classloader used to load the original session of this name. If they are not the same then the session will be refreshed.

Parameters:

sessionName - session name

objectClassLoader - ClassLoader used to load the original session

Returns:

session with given session name

getSession

public org.eclipse.persistence.internal.sessions.AbstractSession getSession(XMLSessionConfigLoader loader,
                                                                            java.lang.String sessionName,
                                                                            java.lang.ClassLoader objectClassLoader)

PUBLIC: Return the session by name, loading the configuration from the file specified in the XMLSessionConfigLoader. Provide the class loader for loading the project, the configuration file and the deployed classes. This method will cause the class loader to be compared with the classloader used to load the original session of this name. If they are not the same then the session will be refreshed.

Parameters:

loader - XMLSessionConfigLoader containing session configuration

sessionName - session name

objectClassLoader - ClassLoader used to load the original session

Returns:

session with given session name

getSession

public org.eclipse.persistence.internal.sessions.AbstractSession getSession(XMLSessionConfigLoader loader,
                                                                            java.lang.String sessionName,
                                                                            java.lang.ClassLoader objectClassLoader,
                                                                            boolean shouldLoginSession,
                                                                            boolean shouldRefreshSession)

PUBLIC: Return the session by name, loading the configuration from the file specified in the loader. Provide the class loader for loading the project, the configuration file and the deployed classes. Pass in true for shouldLoginSession if the session returned should be logged in before returned otherwise false. Pass in true for shouldRefreshSession if the XMLSessionConfigLoader should reparse the configuration file for new sessions. False, will cause the XMLSessionConfigLoader not to parse the file again.

Parameters:

loader - XMLSessionConfigLoader containing session configuration

sessionName - session name

objectClassLoader - ClassLoader used to load the original session

shouldLoginSession - whether the session should be logged in

shouldRefreshSession - whether the session should be refreshed

Returns:

session with given session name

getSession

public org.eclipse.persistence.internal.sessions.AbstractSession getSession(XMLSessionConfigLoader loader,
                                                                            java.lang.String sessionName,
                                                                            java.lang.ClassLoader objectClassLoader,
                                                                            boolean shouldLoginSession,
                                                                            boolean shouldRefreshSession,
                                                                            boolean shouldCheckClassLoader)

PUBLIC: Return the session by name, loading the configuration from the file specified in the loader. Provide the class loader for loading the project, the configuration file and the deployed classes. Pass in true for shouldLoginSession if the session returned should be logged in before returned otherwise false. Pass in true for shouldRefreshSession if the XMLSessionConfigLoader should reparse the configuration file for new sessions. False, will cause the XMLSessionConfigLoader not to parse the file again. Pass true for shouldCheckClassLoader will cause the class loader to be compared with the classloader used to load the original session of this name. If they are not the same then the session will be refreshed, this can be used for re-deployment.

Parameters:

loader - XMLSessionConfigLoader containing session configuration

sessionName - session name

objectClassLoader - ClassLoader used to load the original session

shouldLoginSession - whether the session should be logged in

shouldRefreshSession - whether the session should be refreshed

shouldCheckClassLoader - whether to compare class loaders used to load given session

Returns:

session with given session name

getSession

public org.eclipse.persistence.internal.sessions.AbstractSession getSession(XMLSessionConfigLoader loader)

PUBLIC: Return the session by name, loading the configuration from the file specified in the loader, using the loading options provided on the loader.

Parameters:

loader - XMLSessionConfigLoader containing session configuration

Returns:

session with given session name

setSessions

public void setSessions(java.util.concurrent.ConcurrentMap sessions)

INTERNAL: Set a hashtable of all sessions

Parameters:

sessions - sessions for this session manager

getSessions

public java.util.concurrent.ConcurrentMap<java.lang.String,Session> getSessions()

INTERNAL: Return a hashtable on all sessions.

Returns:

all sessions known by this session manager

setDefaultSession

public void setDefaultSession(Session defaultSession)

PUBLIC: Set the default session. If not set the session configuration is stored in a sessions.xml file in a TopLink directory on your classpath. Other sessions are supported through the getSession by name API.

Parameters:

defaultSession - default session

setManager

public static void setManager(SessionManager theManager)

INTERNAL: Set the singleton session manager. This allows global access to a set of named sessions.

Parameters:

theManager - session manager for current context