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Java Source Code / Java Documentation » EJB Server JBoss 4.2.1 » cluster » org.jboss.ha.hasessionstate.interfaces

Source Cross Reference

Class Diagram

Java Document (Java Doc)

org.jboss.ha.hasessionstate.interfaces .HASessionState

All known Subclasses:   org.jboss.ejb.plugins .StatefulHASessionPersistenceManager,  org.jboss.ha.hasessionstate.server .HASessionStateImpl,
HASessionState
public interface HASessionState (Code)
Interface for services providing clustered state session availability
See Also:   org.jboss.ha.hasessionstate.server.HASessionStateImpl
author:
   Sacha Labourey
version:
   $Revision: 57188 $
version:

Revisions:

Inner Class :public interface HASessionStateListener

Method Summary
public void createSession(String appName, Object keyId)

public HAPartition getCurrentHAPartition()

public String getNodeName()

public PackagedSession getState(String appName, Object keyId)

public PackagedSession getStateWithOwnership(String appName, Object keyId)

public void init()

public void removeSession(String appName, Object keyId)

public void setState(String appName, Object keyId, byte[] state)

public void start()

public void subscribe(String appName, HASessionStateListener listener)
     Subscribe to receive notifications when objects gets modified on another node.
public void takeOwnership(String appName, Object keyId)
     Take ownership of a state.
public void unsubscribe(String appName, HASessionStateListener listener)


Method Detail
createSession
public void createSession(String appName, Object keyId)(Code)
Share a new session state in the sub-partition of this cluster
Parameters:
  appName - Application name for which is state is shared
Parameters:
  keyId - Key identifier of the state

getCurrentHAPartition
public HAPartition getCurrentHAPartition()(Code)

getNodeName
public String getNodeName()(Code)
Return the name of this node as used in the computations

getState
public PackagedSession getState(String appName, Object keyId)(Code)
Get a particular state
Parameters:
  appName - Application hosting the state
Parameters:
  keyId - Key identifier of the state The state value

getStateWithOwnership
public PackagedSession getStateWithOwnership(String appName, Object keyId) throws java.rmi.RemoteException(Code)
Get a state and, if it is not already the case, takes its ownership (a state is always owned by a node)
Parameters:
  appName - Application hosting the state
Parameters:
  keyId - Key identifier of the state
throws:
  java.rmi.RemoteException - Thrown if an exception occurs while getting the ownership of the state The state value

init
public void init() throws Exception(Code)

removeSession
public void removeSession(String appName, Object keyId)(Code)
Remove a session from the sub-partition
Parameters:
  appName - Application hosting the state
Parameters:
  keyId - Key identifier of the state

setState
public void setState(String appName, Object keyId, byte[] state) throws java.rmi.RemoteException(Code)
Modifies a state already shared
Parameters:
  appName - Application name hosting this state
Parameters:
  keyId - Key identifier of the state to modify
Parameters:
  state - New state

start
public void start() throws Exception(Code)

subscribe
public void subscribe(String appName, HASessionStateListener listener)(Code)
Subscribe to receive notifications when objects gets modified on another node.

takeOwnership
public void takeOwnership(String appName, Object keyId) throws java.rmi.RemoteException(Code)
Take ownership of a state. Each state is owned by a node.
Parameters:
  appName - Application hosting the state
Parameters:
  keyId - Key identifier of the state
throws:
  java.rmi.RemoteException - Trown if a communication exception occurs while asking other node to get the ownership

unsubscribe
public void unsubscribe(String appName, HASessionStateListener listener)(Code)

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