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com.tangosol.coherence.servlet
Class TraditionalHttpSessionCollection

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

All Implemented Interfaces:

HttpSessionCollection, XmlConfigurable

Direct Known Subclasses:

SplitHttpSessionCollection

public class TraditionalHttpSessionCollection

extends AbstractHttpSessionCollection

An implementation of HttpSessionCollection that manages session objects as individual units that contain all of their own attributes, as if the session were a single serializable object, however with some optimizations for attribute serialization and deserialization.

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 2.3

Author:

cp 2003.08.20

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

TraditionalHttpSessionCollection()
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

TraditionalHttpSessionCollection

public TraditionalHttpSessionCollection()

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

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