net.agmodel.chizuBean
Class ChizuRequestBean

java.lang.Object
  |
  +--net.agmodel.utilBean.RequestBean
        |
        +--net.agmodel.chizuBean.ChizuRequestBean

All Implemented Interfaces:

ChizuSourceListener, DataSourceListener, EventListener, MapDisplayListener, Runnable, ServiceBeanListener

public class ChizuRequestBean

extends RequestBean

implements MapDisplayListener, ChizuSourceListener, ServiceBeanListener

Field Summary

protected ChizuSourceDetail	currentSource
protected int	height
protected String	language
protected ArrayList	sourceListeners
protected GeographicalArea	targetRegion
protected int	width

Fields inherited from class net.agmodel.utilBean.RequestBean

brokerHTTP, brokerRMI, dataListeners, indeterminateListeners, loginDialog, parent, rb, retrieveDataThread, sessionID, ub

Constructor Summary

ChizuRequestBean(Frame parent)

Method Summary

void	addChizuListener(ChizuListener x)
void	addChizuSourceListener(ChizuSourceListener x)
protected void	clearListeners()
protected void	fireSpecificEvent(RequestBeanListener listener, ServerResult result)
protected ServerResult	getData(ServerRequest request) Implemented by descendant requestBeans to call the broker to get the data.
protected ServerRequest	makeRequest() Implemented by descendant requestBeans to create an appropriate request object for this kind of broker.
void	newChizuSource(ChizuSourceEvent evt) If a new source is selected, and the new source covers a different area to the request bean's current request area then tell GeographicalArea listeners to move to the default display area of the new source.
void	newConnection(ServiceBeanEvent evt) Called when a ServerBean establishes a connection to a server
void	newMapDisplay(MapDisplayEvent evt)
protected boolean	readyToRequest()
protected void	relayChizuSourceEvent(ChizuSourceEvent evt)
void	removeChizuListener(ChizuListener x)
void	removeChizuSourceListener(ChizuSourceListener x)
protected void	setUpBean()
protected boolean	suitableLogin(ServerRequest request) Implemented by descendant requestBeans to select which login mechanism to use.

Methods inherited from class net.agmodel.utilBean.RequestBean

addDataListener, addIndeterminateListener, alreadyLoggedIn, fireDataArrivedEvent, fireDataRequestedEvent, fireIndeterminateEvent, listSourceDetails, login, login, loginToDataSource, removeDataListener, removeIndeterminateListener, run, runRetrieveThread

Methods inherited from class java.lang.Object

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

Field Detail

targetRegion

protected transient GeographicalArea targetRegion

height

protected transient int height

width

protected transient int width

language

protected transient String language

sourceListeners

protected transient ArrayList sourceListeners

currentSource

protected transient ChizuSourceDetail currentSource

Constructor Detail

ChizuRequestBean

public ChizuRequestBean(Frame parent)

Method Detail

clearListeners

protected void clearListeners()

Overrides:

clearListeners in class RequestBean

setUpBean

protected void setUpBean()

Overrides:

setUpBean in class RequestBean

relayChizuSourceEvent

protected void relayChizuSourceEvent(ChizuSourceEvent evt)

addChizuSourceListener

public void addChizuSourceListener(ChizuSourceListener x)

removeChizuSourceListener

public void removeChizuSourceListener(ChizuSourceListener x)

newChizuSource

public void newChizuSource(ChizuSourceEvent evt)

If a new source is selected, and the new source covers a different area to the request bean's current request area then tell GeographicalArea listeners to move to the default display area of the new source. Otherwise, send a GeographicalAreaEvent for the current request area to signal listeners to reload from the new source.

Specified by:

newChizuSource in interface ChizuSourceListener

Parameters:

evt -

newConnection

public void newConnection(ServiceBeanEvent evt)

Description copied from interface: ServiceBeanListener

Called when a ServerBean establishes a connection to a server

Specified by:

newConnection in interface ServiceBeanListener

Parameters:

evt - contact details for the server.

newMapDisplay

public void newMapDisplay(MapDisplayEvent evt)

Specified by:

newMapDisplay in interface MapDisplayListener

readyToRequest

protected boolean readyToRequest()

Overrides:

readyToRequest in class RequestBean

makeRequest

protected ServerRequest makeRequest()

Description copied from class: RequestBean

Implemented by descendant requestBeans to create an appropriate request object for this kind of broker.

Specified by:

makeRequest in class RequestBean

Returns:

a request to be sent to the broker.

fireSpecificEvent

protected void fireSpecificEvent(RequestBeanListener listener,
                                 ServerResult result)

Specified by:

fireSpecificEvent in class RequestBean

addChizuListener

public void addChizuListener(ChizuListener x)

removeChizuListener

public void removeChizuListener(ChizuListener x)

suitableLogin

protected boolean suitableLogin(ServerRequest request)
                         throws RemoteException,
                                GeneralException

Description copied from class: RequestBean

Implemented by descendant requestBeans to select which login mechanism to use.
Should either called login(GeographicalArea) or login(String), depending on whether spatial request bean or data source request bean

Specified by:

suitableLogin in class RequestBean

Returns:

true if at least one database is accessible after the logging in process.

RemoteException

GeneralException

getData

protected ServerResult getData(ServerRequest request)
                        throws RemoteException,
                               GeneralException

Description copied from class: RequestBean

Implemented by descendant requestBeans to call the broker to get the data.
These beans can use brokerRMI if the connection is RMI, or brokerHTTP if the connection is via HTTP.

Specified by:

getData in class RequestBean

Returns:

a request to be sent to the broker.

RemoteException

GeneralException