edu.cmu.aura.service
Class SimpleClient

java.lang.Object
  |
  +--edu.cmu.aura.service.SimpleClient

All Implemented Interfaces:

QueryClient, java.rmi.Remote

public abstract class SimpleClient

extends java.lang.Object

implements QueryClient

This class should be extended by clients that desire to receive results from posted queries and triggers. One or both of queryExecuted() and triggerFired() should be implemented by the client in order to actually receive results from posted queries and triggers.

Field Summary

protected edu.cmu.aura.service.rpc.RemoteReference	refToThis
protected QueryClientSkel	skel
protected edu.cmu.aura.service.rpc.SkelServer	skelServer

Constructor Summary

SimpleClient(int port)
Construct a simple client listening on a specified port.

Method Summary

void	finalize()
edu.cmu.aura.service.rpc.RemoteReference	getReference() Returns a reference to this client.
void	queryExecuted(int queryID, QueryResult queryResult) Called by a service to inform a client of the result of a posted query.
void	triggerFired(int triggerID, QueryResult queryResult) Called by a service to inform clients of results of triggers.

Methods inherited from class java.lang.Object

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

Field Detail

skelServer

protected edu.cmu.aura.service.rpc.SkelServer skelServer

skel

protected QueryClientSkel skel

refToThis

protected edu.cmu.aura.service.rpc.RemoteReference refToThis

Constructor Detail

SimpleClient

public SimpleClient(int port)
             throws java.io.IOException

Construct a simple client listening on a specified port.

Parameters:

port - port to listen on

Method Detail

queryExecuted

public void queryExecuted(int queryID,
                          QueryResult queryResult)
                   throws java.rmi.RemoteException

Called by a service to inform a client of the result of a posted query. The default implementation does nothing. Clients that actually wish to receive results should implement override this.

Specified by:

queryExecuted in interface QueryClient

Parameters:

queryID - the ID of the posted query

queryResult - the result of the posted query execution

java.rmi.RemoteException

triggerFired

public void triggerFired(int triggerID,
                         QueryResult queryResult)
                  throws java.rmi.RemoteException

Called by a service to inform clients of results of triggers. The default implementation does nothing. Clients that actually wish to receive results should implement override this.

Specified by:

triggerFired in interface QueryClient

Parameters:

queryResult - the result of a trigger execution

java.rmi.RemoteException

getReference

public edu.cmu.aura.service.rpc.RemoteReference getReference()

Returns a reference to this client.

Specified by:

getReference in interface QueryClient

Returns:

return a reference to this client

finalize

public void finalize()

Overrides:

finalize in class java.lang.Object