stella.rmi

Class ErrorRelay

java.lang.Object

util.PropertyContainer

util.PropertyResources

util.rmi.RmiPropertyContainer

util.rmi.AbstractRmiListener

stella.rmi.ErrorRelay

All Implemented Interfaces:

Cloneable, Remote, EventListener, Caster, ErrorCaster, RmiErrorListener, ExitCleaning, Initializable, PropertySupplying, ResourceSupplying, RmiEventListener, RmiListener, RmiPropertyBearing

public class ErrorRelay
extends AbstractRmiListener
implements RmiErrorListener, ErrorCaster, Initializable

An rmi-error listener that acts as a local error caster.

Nested Class Summary

Nested classes/interfaces inherited from class util.PropertyResources

PropertyResources.Load, PropertyResources.URLResource

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	bound Ture, if successfully registered to at least one listener.
private List<ErrorListener>	errlist These are the local error listeners.
static String	KEY_RMIERROR The key denoting a comma-separated list of rmi-error casters.

Fields inherited from class util.rmi.AbstractRmiListener

KEY_ALIVE, KEY_EXPORTPORT, KEY_INIT, KEY_LISTENERNAME, KEY_RETRY, KEY_RETRYSLEEP, KEY_SHUTDOWNDELAY

Fields inherited from class util.PropertyResources

KEY_NOINITONCREATE, POSTFIX_ALPHABET, POSTFIX_BYTES, POSTFIX_DIR, POSTFIX_EXT, POSTFIX_FILE, POSTFIX_LIST, POSTFIX_MODTIME, POSTFIX_URL

Fields inherited from class util.PropertyContainer

KEY_LISTSEPARATOR, KEY_MAPKEYVALUECHAR, KEY_MAPSEPARATOR

Fields inherited from interface util.ResourceSupplying

KEY_URLRESOURCES, KEY_URLUSECONFIG, KEY_URLUSECURRENT, KEY_URLUSEHOME

Fields inherited from interface util.PropertySupplying

CONFIG, KEY_CLASS

Constructor Summary

Constructors

Constructor and Description
ErrorRelay(Map<String,String> prop) We create a new error relay and start binding to the error casters in the init section.

Method Summary

Modifier and Type	Method and Description
void	addErrorListener(ErrorListener ear) Registers an error event listener to this property container.
protected boolean	deregisterAtCaster(RmiCaster rmi, Class service) Deregisters at caster.
void	init() We create a new list of local error listeners and start registering at the remote error casters.
boolean	isBound() Return true, if we are bound to at least one error caster.
private void	register(String list, Class casterclass) Registers at a caster list.
protected boolean	registerAtCaster(RmiCaster rmi, Class service) Registers at the specified caster if the caster is one of the four possible caster instances this class listens to.
void	removeErrorListener(ErrorListener ear) Deregisters an error event listener from this property container.
void	rmiErrorOccured(ErrorEvent ee) We pass the error received to our listeners.

Methods inherited from class util.rmi.AbstractRmiListener

allBound, blockBinding, blockBinding, disconnect, exit, getIP, getListenerName, isConnected, listenerName, releaseBinding, releaseBinding, rescanned, startBinding, startBinding

Methods inherited from class util.rmi.RmiPropertyContainer

containsRemoteProperty, getRemoteProperties, getRemoteProperty, setRemoteProperty

Methods inherited from class util.PropertyResources

clone, createFrom, createFrom, createFrom, createInstance, getApplet, getAsResources, getLocate, getPropertiesToKey, getPropertiesToKey, getResource, getResourceAsStream, getResourceFromKey, getResources, hasLocalURLs, initProperties, keyCreate, keyCreate, reload, setApplet

Methods inherited from class util.PropertyContainer

augment, augment, augment, augment, augment, defaultBoolean, defaultChar, defaultDouble, defaultFloat, defaultInt, defaultLong, defaultObject, defaultObject, defaultProperties, defaultProperty, getAsBoolean, getAsChar, getAsDouble, getAsEnums, getAsFloat, getAsInt, getAsList, getAsLong, getAsMap, getAsMap, getAsObject, getAsObject, getProperties, getProperty, has, isNew, parseObject, parseObject, reload, removeProperty, requires, setObject, setProperties, setProperty, stringProperties, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface util.rmi.RmiEventListener

getListenerName

Methods inherited from interface util.rmi.RmiListener

disconnect, isConnected

Methods inherited from interface util.PropertySupplying

defaultBoolean, defaultChar, defaultDouble, defaultFloat, defaultInt, defaultLong, defaultObject, defaultObject, defaultProperties, defaultProperty, getAsBoolean, getAsChar, getAsDouble, getAsFloat, getAsInt, getAsList, getAsLong, getAsMap, getAsObject, getAsObject, getProperties, getProperty, has, parseObject, removeProperty, setObject, setProperty, stringProperties

Field Detail

KEY_RMIERROR

public static final String KEY_RMIERROR

The key denoting a comma-separated list of rmi-error casters.

See Also:

Constant Field Values

errlist

private final List<ErrorListener> errlist

These are the local error listeners.

bound

private boolean bound

Ture, if successfully registered to at least one listener.

Constructor Detail

ErrorRelay

public ErrorRelay(Map<String,String> prop)
           throws RemoteException

We create a new error relay and start binding to the error casters in the init section.

Throws:

RemoteException

Method Detail

init

public void init()

We create a new list of local error listeners and start registering at the remote error casters.

Specified by:

init in interface Initializable

isBound

public boolean isBound()

Return true, if we are bound to at least one error caster.

addErrorListener

public void addErrorListener(ErrorListener ear)

Registers an error event listener to this property container. This method is used for local listeners.

Specified by:

addErrorListener in interface ErrorCaster

removeErrorListener

public void removeErrorListener(ErrorListener ear)

Deregisters an error event listener from this property container. This method is used for local listeners.

Specified by:

removeErrorListener in interface ErrorCaster

rmiErrorOccured

public void rmiErrorOccured(ErrorEvent ee)
                     throws RemoteException

We pass the error received to our listeners.

Specified by:

rmiErrorOccured in interface RmiErrorListener

Throws:

RemoteException

registerAtCaster

protected boolean registerAtCaster(RmiCaster rmi,
                                   Class service)

Registers at the specified caster if the caster is one of the four possible caster instances this class listens to.

Specified by:

registerAtCaster in class AbstractRmiListener

deregisterAtCaster

protected boolean deregisterAtCaster(RmiCaster rmi,
                                     Class service)

Deregisters at caster. Simply checks if the caster handed over is of one of the four supported types and removes itself from its listener list. Note that this can also mean de-registering from casters we never registered to because this info is lost.

Specified by:

deregisterAtCaster in class AbstractRmiListener

register

private void register(String list,
                      Class casterclass)

Registers at a caster list.