com.persistit

Class SessionId

java.lang.Object

com.persistit.SessionId

public class SessionId
extends Object

Identity key for a session. Normally there is one session per thread, but applications that need to maintain session context across multiple network requests serviced on different threads can access and carefully modify their session contexts using SessionID. See Persistit.getSessionId() and Persistit.setSessionId(SessionId).

A SessionId instance holds a reference to the Thread currently associated with it; initially this this the thread that created the SessionId. The setSessionId method reassigns the thread field. The isAlive() method indicates whether the associated thread is alive. The Persistit.cleanup() method cleans up all transaction resources for SessionId instances whose threads are no longer alive.

A session is used to maintain state, including the Transaction context and map of cached Exchange maintained by Persistit.getExchange(String, String, boolean). Therefore care must be taken to limit the maximum number of SessionId instances created during the lifetime of a Persistit instance and to manage them appropriately.

Constructor Summary

Constructors

Constructor and Description
SessionId()

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object id)
int	hashCode()
boolean	isAlive()
String	ownerName()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SessionId

public SessionId()

Method Detail

equals

public boolean equals(Object id)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

isAlive

public boolean isAlive()

Returns:

Status of the associated Thread.

toString

public String toString()

Overrides:

toString in class Object

ownerName

public String ownerName()