org.abstracthorizon.danube.http.session
Class SimpleSessionManager

java.lang.Object
  org.abstracthorizon.danube.http.session.SimpleCookieSessionManager
      org.abstracthorizon.danube.http.session.SimpleSessionManager

All Implemented Interfaces:

HTTPSessionManager, SessionManager

public class SimpleSessionManager
extends SimpleCookieSessionManager

Simple session manager implementation that checks for expired sessions on invocation of HTTPSessionManager methods. If method is invoked sooner then minScanInterval then scan won't happen.

Author:

Daniel Sendula

Field Summary

static int	DEFAULT_MIN_SCAN_INTERVAL Default minimum interval between scans for expired sessions
static int	DEFAULT_SESSION_TIMEOUT Default session timeout as 30 minutes
protected long	lastScan When was last scan performed
protected int	minScanInterval Minimum interval between two scans for expired sessions
protected int	sessionTimeout Current session timeout

Fields inherited from class org.abstracthorizon.danube.http.session.SimpleCookieSessionManager

random, SESSION_ATTRIBUTE, SESSION_COOKIE_NAME, sessionCookieName, sessions

Constructor Summary

SimpleSessionManager()

Method Summary

protected void	checkForExpiredSessions() Checks if there are expired sessions.
Object	findSession(HTTPConnection connection, boolean create) Finds a session for supplied connection
Object	findSession(Object sessionId, boolean create) Searches for the session using givne session id
int	getMinScanInterval() Returns minimum interval between scans for expired sessions
int	getSessionTimeout() Returns session timeout
void	removeSession(HTTPConnection connection) Removes session from connection
void	removeSession(Object session) This object removes existing session
String	rewriteURL(HTTPConnection connection, String url) Rewrites URL for given connection
protected void	scanForExpiredSessions() Scans all defined sessions for expired ones
void	setMinScanInterval(int minScanInterval) Sets minimum interval between scans for expired sessions
void	setSessionTimeout(int sessionTimeout) Sets session timeout

Methods inherited from class org.abstracthorizon.danube.http.session.SimpleCookieSessionManager

createSession, createSessionId, getSessionCookieName, setSessionCookieName, validateSessionId

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_SESSION_TIMEOUT

public static final int DEFAULT_SESSION_TIMEOUT

Default session timeout as 30 minutes

See Also:

Constant Field Values

DEFAULT_MIN_SCAN_INTERVAL

public static final int DEFAULT_MIN_SCAN_INTERVAL

Default minimum interval between scans for expired sessions

See Also:

Constant Field Values

sessionTimeout

protected int sessionTimeout

Current session timeout

lastScan

protected long lastScan

When was last scan performed

minScanInterval

protected int minScanInterval

Minimum interval between two scans for expired sessions

Constructor Detail

SimpleSessionManager

public SimpleSessionManager()

Method Detail

findSession

public Object findSession(HTTPConnection connection,
                          boolean create)

Finds a session for supplied connection

Specified by:

findSession in interface HTTPSessionManager

Overrides:

findSession in class SimpleCookieSessionManager

Parameters:

connection - connection

create - flag defining should session be created it doesn't exist already

Returns:

existing session object, new session if existing session is not there and create param is set to true or null otherwise.

findSession

public Object findSession(Object sessionId,
                          boolean create)

Searches for the session using givne session id

Specified by:

findSession in interface SessionManager

Overrides:

findSession in class SimpleCookieSessionManager

Parameters:

sessionId - session id object

create - flag defining should session be created it doesn't exist already

Returns:

existing session object, new session if existing session is not there and create param is set to true or null otherwise.

removeSession

public void removeSession(HTTPConnection connection)

Removes session from connection

Specified by:

removeSession in interface HTTPSessionManager

Overrides:

removeSession in class SimpleCookieSessionManager

Parameters:

connection - connection

removeSession

public void removeSession(Object session)

This object removes existing session

Specified by:

removeSession in interface SessionManager

Overrides:

removeSession in class SimpleCookieSessionManager

Parameters:

session - session to be removed

rewriteURL

public String rewriteURL(HTTPConnection connection,
                         String url)

Rewrites URL for given connection

Specified by:

rewriteURL in interface HTTPSessionManager

Overrides:

rewriteURL in class SimpleCookieSessionManager

Parameters:

url - URL to be rewritten

connection - http connection object

Returns:

updated url

checkForExpiredSessions

protected void checkForExpiredSessions()

Checks if there are expired sessions. This method won't run if it was invoked in less then minScanInterval time.

scanForExpiredSessions

protected void scanForExpiredSessions()

Scans all defined sessions for expired ones

getSessionTimeout

public int getSessionTimeout()

Returns session timeout

Returns:

session timeout

setSessionTimeout

public void setSessionTimeout(int sessionTimeout)

Sets session timeout

Parameters:

sessionTimeout - session timeout

getMinScanInterval

public int getMinScanInterval()

Returns minimum interval between scans for expired sessions

Returns:

minimum interval between scans for expired sessions

setMinScanInterval

public void setMinScanInterval(int minScanInterval)

Sets minimum interval between scans for expired sessions

Parameters:

minScanInterval - minimum interval between scans for expired sessions