com.tangosol.coherence.servlet
Class MonolithicHttpSessionCollection

java.lang.Object
  com.tangosol.util.Base
      com.tangosol.coherence.servlet.AbstractHttpSessionCollection
          com.tangosol.coherence.servlet.MonolithicHttpSessionCollection

All Implemented Interfaces:

HttpSessionCollection, XmlConfigurable

public class MonolithicHttpSessionCollection
extends AbstractHttpSessionCollection

An implementation of HttpSessionCollection that manages 'monolithic' session objects. A monolithic session object is one that serializes its attributes all together, as a whole, using a single ObjectOutputStream.

The collection uses two configurable named caches to manage its session information in the cluster:

• "session-storage": The cache of clustered session models. This cache should be configured as an unlimited size cache, although it is strongly suggested that it be arranged in a tiered memory/persistent manner by using the overflow map functionality of Coherence, or even using size-limited caching with read-through/write-behind to a database (if sessions should survive a full cluster take-down/restart).
• "session-death-certificates": A cache of previously used session IDs. This cache should be configured to expire its entries after an acceptable period of time (e.g. one hour or one day), and probably should be size-limited as well (e.g. ten thousand entries).

Version:

Coherence 2.5

Author:

cp 2004.08.16

Nested Class Summary

Nested classes/interfaces inherited from class com.tangosol.coherence.servlet.AbstractHttpSessionCollection

AbstractHttpSessionCollection.ApplicationScopeController, AbstractHttpSessionCollection.DistributedController, AbstractHttpSessionCollection.ExitAgent, AbstractHttpSessionCollection.ExitObserver, AbstractHttpSessionCollection.ExitTask, AbstractHttpSessionCollection.GlobalScopeController, AbstractHttpSessionCollection.HybridController, AbstractHttpSessionCollection.LocalController

Nested classes/interfaces inherited from interface com.tangosol.coherence.servlet.HttpSessionCollection

HttpSessionCollection.AttributeScopeController, HttpSessionCollection.SessionDistributionController

Field Summary

Fields inherited from class com.tangosol.coherence.servlet.AbstractHttpSessionCollection

CACHENAME_DEATHCERTS, CACHENAME_LOCAL_ATTRIBUTES, CACHENAME_LOCAL_SESSIONS, CACHENAME_SESSIONS, CTX_INIT_ALLOW_LOCAL_ATTRIBUTES, CTX_INIT_APPLICATION_NAME, CTX_INIT_CACHENAME_DEATHCERTS, CTX_INIT_CACHENAME_LOCAL_ATTRIBUTES, CTX_INIT_CACHENAME_LOCAL_SESSIONS, CTX_INIT_CACHENAME_SESSIONS, CTX_INIT_DAEMON_ASSUME_LOCALITY, CTX_INIT_DIST_CONTROLLER_CLASS, CTX_INIT_SCOPE_CONTROLLER_CLASS, CTX_INIT_SERVICENAME_OWNERSHIP, CTX_INIT_SESSION_APP_LOCK, CTX_INIT_SESSION_EXPIRE_SECS, CTX_INIT_SESSION_ID_LENGTH, CTX_INIT_SESSION_MEMBER_LOCK, CTX_INIT_SESSION_STICKY, CTX_INIT_SESSION_STRICT_SPEC, CTX_INIT_SESSION_THREAD_LOCK, SERVICENAME_OWNERSHIP

Constructor Summary

MonolithicHttpSessionCollection()
Default constructor (required).

Method Summary

protected AbstractHttpSessionModel	instantiateModel(javax.servlet.http.HttpSession session, java.lang.String sId) Factory Method: Instantiate a AbstractHttpSessionModel or subclass thereof.
java.lang.String	toString() Returns a string representation of the object.

Methods inherited from class com.tangosol.coherence.servlet.AbstractHttpSessionCollection

activate, addHttpSessionAttributeListener, addHttpSessionListener, create, destroy, destroyLocalAttributesCache, ensureLocalAttributesCache, ensureSerializer, enter, exit, flush, generateSessionId, get, getActiveCache, getAppControlCache, getAverageModelLifetime, getAverageModelSize, getClusterCache, getCollection, getConfig, getCurrentTime, getDeathCertCache, getDefaultMaxInactiveInterval, getDescription, getDistributionController, getHttpSessionAttributeListeners, getHttpSessionListeners, getLocalAttributesCache, getLocalCache, getMaxModelSize, getMinModelSize, getModel, getModelDeaths, getModelUpdates, getOwnedCache, getOwnedModel, getScopeController, getSessionIdLength, getSessionOwnershipInfo, getStickyCache, getStickyExitTaskCache, getStickyService, isActive, isAllowLocalAttributes, isAppLockingEnforced, isAssumeLocality, isExistent, isMemberLockingEnforced, isOwned, isOwnershipSticky, isStrict, isStuck, isThreadLockingEnforced, iterateIds, iteratePotentiallyExpiredIds, obtainAppOwnership, obtainClusterOwnership, obtainThreadOwnership, onModelUpdate, passivate, postCreate, putBlind, releaseAppOwnership, releaseCache, releaseClusterOwnership, releaseStuckSession, releaseThreadOwnership, removeBlind, removeHttpSessionAttributeListener, removeHttpSessionListener, resetStatistics, setConfig, shutdown

Constructor Detail

MonolithicHttpSessionCollection

public MonolithicHttpSessionCollection()

Default constructor (required).

Method Detail

toString

public java.lang.String toString()

Returns a string representation of the object.

Overrides:

toString in class AbstractHttpSessionCollection

Returns:

a string representation of the object

instantiateModel

protected AbstractHttpSessionModel instantiateModel(javax.servlet.http.HttpSession session,
                                                    java.lang.String sId)

Factory Method: Instantiate a AbstractHttpSessionModel or subclass thereof.

Specified by:

instantiateModel in class AbstractHttpSessionCollection

Parameters:

session - the session that delegates to this model

sId - the session ID

Returns:

a new instance of AbstractHttpSessionModel or subclass thereof