org.apache.shiro.session.mgt.eis
Class EnterpriseCacheSessionDAO
java.lang.Object
org.apache.shiro.session.mgt.eis.AbstractSessionDAO
org.apache.shiro.session.mgt.eis.CachingSessionDAO
org.apache.shiro.session.mgt.eis.EnterpriseCacheSessionDAO
- All Implemented Interfaces:
- CacheManagerAware, SessionDAO
public class EnterpriseCacheSessionDAO
- extends CachingSessionDAO
SessionDAO implementation that relies on an enterprise caching product as the EIS system of record for all sessions.
It is expected that an injected Cache
or
CacheManager
is backed by an enterprise caching product that can support
all application sessions and/or provide disk paging for resilient data storage.
Production Note
This implementation defaults to using an in-memory map-based CacheManager
, which is great for testing but
will typically not scale for production environments and could easily cause OutOfMemoryException
s. Just
don't forget to configure* an instance of this class with a production-grade CacheManager
that can
handle disk paging for large numbers of sessions and you'll be fine.
*If you configure Shiro's SecurityManager
instance with such a CacheManager
, it will be
automatically applied to an instance of this class and you won't need to explicitly set it in configuration.
Implementation Details
This implementation relies heavily on the parent class
's transparent caching behavior for
all storage operations with the enterprise caching product. Because the parent class uses a Cache
or
CacheManager
to perform caching, and the cache is considered the system of record, nothing further needs to
be done for the doReadSession(java.io.Serializable)
, doUpdate(org.apache.shiro.session.Session)
and doDelete(org.apache.shiro.session.Session)
method implementations. This class
implements those methods as required by the parent class, but they essentially do nothing.
- Since:
- 1.0
Method Summary |
protected Serializable |
doCreate(Session session)
Subclass hook to actually persist the given Session instance to the underlying EIS. |
protected void |
doDelete(Session session)
Subclass implementation hook to permanently delete the given Session from the underlying EIS. |
protected Session |
doReadSession(Serializable sessionId)
Subclass implementation hook that retrieves the Session object from the underlying EIS or null if a
session with that ID could not be found. |
protected void |
doUpdate(Session session)
Subclass implementation hook to actually persist the Session 's state to the underlying EIS. |
Methods inherited from class org.apache.shiro.session.mgt.eis.CachingSessionDAO |
cache, cache, create, createActiveSessionsCache, delete, getActiveSessions, getActiveSessionsCache, getActiveSessionsCacheName, getCachedSession, getCachedSession, getCacheManager, readSession, setActiveSessionsCache, setActiveSessionsCacheName, setCacheManager, uncache, update |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
EnterpriseCacheSessionDAO
public EnterpriseCacheSessionDAO()
doCreate
protected Serializable doCreate(Session session)
- Description copied from class:
AbstractSessionDAO
- Subclass hook to actually persist the given Session instance to the underlying EIS.
- Specified by:
doCreate
in class AbstractSessionDAO
- Parameters:
session
- the Session instance to persist to the EIS.
- Returns:
- the id of the session created in the EIS (i.e. this is almost always a primary key and should be the
value returned from
Session.getId()
.
doReadSession
protected Session doReadSession(Serializable sessionId)
- Description copied from class:
AbstractSessionDAO
- Subclass implementation hook that retrieves the Session object from the underlying EIS or
null
if a
session with that ID could not be found.
- Specified by:
doReadSession
in class AbstractSessionDAO
- Parameters:
sessionId
- the id of the Session to retrieve.
- Returns:
- the Session in the EIS identified by sessionId or
null
if a
session with that ID could not be found.
doUpdate
protected void doUpdate(Session session)
- Description copied from class:
CachingSessionDAO
- Subclass implementation hook to actually persist the
Session
's state to the underlying EIS.
- Specified by:
doUpdate
in class CachingSessionDAO
- Parameters:
session
- the session object whose state will be propagated to the EIS.
doDelete
protected void doDelete(Session session)
- Description copied from class:
CachingSessionDAO
- Subclass implementation hook to permanently delete the given Session from the underlying EIS.
- Specified by:
doDelete
in class CachingSessionDAO
- Parameters:
session
- the session instance to permanently delete from the EIS.
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