javawebparts.filter
Class SessionLimiterFilterHelper

java.lang.Object
  |
  +--javawebparts.filter.SessionLimiterFilterHelper

public final class SessionLimiterFilterHelper

extends java.lang.Object

This class contains static methods used by the classes implementing the session limiting facility.

Author:

Tamas Szabo

Field Summary

private static org.apache.commons.logging.Log	log Log instance.
static java.lang.String	SET_KEY Attribute name of the Set containing the allowed session IDs in the application context.

Constructor Summary

private

SessionLimiterFilterHelper() This is a utility class, so we want a private noarg constructor so instances cannot be created.

Method Summary

static boolean	isSessionRegistered(javax.servlet.ServletContext ctx, java.lang.String sessionId) Checks whether a session is registered (ie allowed).
static boolean	registerSession(javax.servlet.ServletContext ctx, java.lang.String sessionId, int maxSessions) Register a session if the maximum number of sessions isn't reached yet.

Methods inherited from class java.lang.Object

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

Field Detail

SET_KEY

public static final java.lang.String SET_KEY

Attribute name of the Set containing the allowed session IDs in the application context.

See Also:

Constant Field Values

log

private static org.apache.commons.logging.Log log

Log instance.

Constructor Detail

SessionLimiterFilterHelper

private SessionLimiterFilterHelper()

This is a utility class, so we want a private noarg constructor so instances cannot be created.

Method Detail

registerSession

public static boolean registerSession(javax.servlet.ServletContext ctx,
                                      java.lang.String sessionId,
                                      int maxSessions)

Register a session if the maximum number of sessions isn't reached yet.

Parameters:

ctx - The servlet context.

sessionId - The session ID.

maxSessions - The number of allowed sessions.

Returns:

true if the session was successfully registered, false otherwise.

isSessionRegistered

public static boolean isSessionRegistered(javax.servlet.ServletContext ctx,
                                          java.lang.String sessionId)

Checks whether a session is registered (ie allowed).

Parameters:

ctx - The servlet context.

sessionId - The session ID.

Returns:

true if this session is registered, false otherwise.