springs.context
Class ContextManager_RMIImpl

java.lang.Object
  |
  +--springs.context.ContextManager_RMIImpl

All Implemented Interfaces:

ContextManager, java.rmi.Remote

public class ContextManager_RMIImpl

extends java.lang.Object

implements ContextManager, java.rmi.Remote

An implementation of a ContextManager using RMI.

Author:

Sergio Ilarri Artigas

Constructor Summary

ContextManager_RMIImpl()
Constructor.

Method Summary

void	addContext(springs.context.ContextAddress context) Adds a context to the list of contexts in the system.
void	createAgent(springs.agent.SpringsAgent agent, boolean isMoving) Creates an agent.
springs.access.AgentReference	getReference(java.lang.String agentName, springs.context.ContextAddress addressPetitioner, boolean addAsObserver) Obtains a reference to the given agent.
int	ping() Pings the context.
void	receiveContexts(java.util.Hashtable contexts) Receives information about the contexts in the system.
void	removeContext(java.lang.String contextName) Removes a context from the list of contexts in the system.
void	updateReferences(java.util.Vector referenceUpdates) Receives an update of references.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ContextManager_RMIImpl

public ContextManager_RMIImpl()
                       throws java.rmi.RemoteException

Constructor.

Method Detail

createAgent

public void createAgent(springs.agent.SpringsAgent agent,
                        boolean isMoving)
                 throws CreationException

Description copied from interface: ContextManager

Creates an agent.

Specified by:

createAgent in interface ContextManager

Parameters:

agent - the agent.

isMoving - a boolean indicating if the agent is sent because of a movement from another context.

CreationException

See Also:

SpringsAgent, String, Vector, CreationException, RemoteException

getReference

public springs.access.AgentReference getReference(java.lang.String agentName,
                                                  springs.context.ContextAddress addressPetitioner,
                                                  boolean addAsObserver)
                                           throws AgentNotFoundException

Description copied from interface: ContextManager

Obtains a reference to the given agent.

Specified by:

getReference in interface ContextManager

Parameters:

agentName - the name of the agent.

addressPetitioner - the address of the context that requests the reference.

addAsObserver - a boolean indicating whether the agent must be added as an observer.

AgentNotFoundException

See Also:

AgentReference, String, ContextAddress, AgentNotFoundException, RemoteException

updateReferences

public void updateReferences(java.util.Vector referenceUpdates)

Description copied from interface: ContextManager

Receives an update of references.

Specified by:

updateReferences in interface ContextManager

Returns:

referenceUpdates the updates.

See Also:

Vector, RemoteException

receiveContexts

public void receiveContexts(java.util.Hashtable contexts)

Description copied from interface: ContextManager

Receives information about the contexts in the system.

Specified by:

receiveContexts in interface ContextManager

Parameters:

contexts - a table consisting of pairs .

See Also:

Hashtable, RemoteException

addContext

public void addContext(springs.context.ContextAddress context)
                throws java.rmi.RemoteException

Description copied from interface: ContextManager

Adds a context to the list of contexts in the system.

Specified by:

addContext in interface ContextManager

Parameters:

context - the context.

java.rmi.RemoteException

See Also:

ContextAddress, RemoteException

removeContext

public void removeContext(java.lang.String contextName)
                   throws java.rmi.RemoteException

Description copied from interface: ContextManager

Removes a context from the list of contexts in the system.

Specified by:

removeContext in interface ContextManager

Parameters:

contextName - the name of the context.

java.rmi.RemoteException

See Also:

String, RemoteException

ping

public int ping()

Description copied from interface: ContextManager

Pings the context.

Specified by:

ping in interface ContextManager

Returns:

the number of agents that are being tracked by the context.

See Also:

RemoteException