Java Doc for Session.java in  » EJB-Server-geronimo » plugins » org » apache » geronimo » clustering » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » EJB Server geronimo » plugins » org.apache.geronimo.clustering 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


org.apache.geronimo.clustering.Session

All known Subclasses:   org.apache.geronimo.clustering.wadi.WADISessionAdaptor,
Session
public interface Session (Code)
Represents a clustered session.

A Session is created by a SessionManager and is uniquely identified by its sessionId. More accurately, this sessionId is unique within the set of SessionManagers from which this Session has been sourced. If two Sessions have the same sessionId, then a client can be sure that they have been created from two distinct set of SessionManagers.

A Session provides Map like contracts to manipulate state information. State information must be Serializable as it may be marshalled automatically by the underpinning local SessionManager. At any given point of time, a Session is uniquely "instantiated" once cluster wide. Also, cluster wide accesses to a given Session are ensured to be serialized by the set of SessionManagers from which the Session has been sourced. The interposition of a ClusteredInvocation between a client and the Session this client would like to access enforces unique instantiation and access serialization cluster wide for a given Session.
version:
   $Rev$ $Date$





Method Summary
 ObjectaddState(String key, Object value)
     Map like contract to manipulate state information.
 StringgetSessionId()
     Gets the sessionId.
 ObjectgetState(String key)
     Map like contract to manipulate state information.
 MapgetState()
     Map like contract to manipulate state information.
 voidonEndAccess()
     Notifies the session that state accesses are now completed.
 voidrelease()
     Releases the session.

When a Session is released, it is released from the underlying set of SessionManagers.

 ObjectremoveState(String key)
     Map like contract to manipulate state information.



Method Detail
addState
Object addState(String key, Object value)(Code)
Map like contract to manipulate state information.



getSessionId
String getSessionId()(Code)
Gets the sessionId. sessionId.



getState
Object getState(String key)(Code)
Map like contract to manipulate state information.



getState
Map getState()(Code)
Map like contract to manipulate state information.

The returned Map is mutable and is backed by the session.




onEndAccess
void onEndAccess()(Code)
Notifies the session that state accesses are now completed.

When state accesses end, the underlying local SessionManager may decide to replicate synchronously or asynchronously the current state to remote SessionManagers.




release
void release()(Code)
Releases the session.

When a Session is released, it is released from the underlying set of SessionManagers. In other words, its sessionId is unknown and its state is permanently lost. After the release of a Session, the behavior of the other methods is undefined.




removeState
Object removeState(String key)(Code)
Map like contract to manipulate state information.



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