wt.federation
Class FederationServerHelper

java.lang.Object
  wt.federation.FederationServerHelper

All Implemented Interfaces:

Externalizable, Serializable

public class FederationServerHelper

extends Object

implements Externalizable

FederationServerHelper provides server invokable methods to federation services. These methods are executed on the server side. It also provides access to the methods of the FederationServiceSvr interface.

Supported API: true

Extendable: false

See Also:

Serialized Form

Field Summary

private static String	CLASSNAME
static long	EXTERNALIZATION_VERSION_UID
protected static long	OLD_FORMAT_VERSION_UID
private static String	RESOURCE
(package private) static long	serialVersionUID
static FederationServiceSvr	service Supported API: false
private static Hashtable	subclassCache
private static boolean	VERBOSE

Constructor Summary

FederationServerHelper()

Method Summary

static Class	getFederatedSubclass(Class objectClass) Finds a subclass of the specified class that implements the Federated interface.
static boolean	hasExpired(Federated proxy) Returns true if the specified proxy object has expired.
static void	initializeProxy(Federated proxy, FederatedService service) Initializes the properties of a proxy object that control expiration and refreshing.
static boolean	isStale(Federated proxy) Returns true if the specified proxy object is stale.
void	readExternal(ObjectInput input) Reads the non-transient fields of this class from an external source.
private boolean	readOldVersion(ObjectInput input, long readSerialVersionUID, boolean passThrough, boolean superDone) Reads the non-transient fields of this class from an external source, which is not the current version.
protected boolean	readVersion(FederationServerHelper thisObject, ObjectInput input, long readSerialVersionUID, boolean passThrough, boolean superDone) Reads the non-transient fields of this class from an external source.
void	writeExternal(ObjectOutput output) Writes the non-transient fields of this class to an external source.

Methods inherited from class java.lang.Object

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

Field Detail

RESOURCE

private static final String RESOURCE

See Also:

Constant Field Values

CLASSNAME

private static final String CLASSNAME

service

public static final FederationServiceSvr service

Supported API: false

serialVersionUID

static final long serialVersionUID

See Also:

Constant Field Values

EXTERNALIZATION_VERSION_UID

public static final long EXTERNALIZATION_VERSION_UID

See Also:

Constant Field Values

OLD_FORMAT_VERSION_UID

protected static final long OLD_FORMAT_VERSION_UID

See Also:

Constant Field Values

subclassCache

private static Hashtable subclassCache

VERBOSE

private static boolean VERBOSE

Constructor Detail

FederationServerHelper

public FederationServerHelper()

Method Detail

writeExternal

public void writeExternal(ObjectOutput output)
                   throws IOException

Writes the non-transient fields of this class to an external source.

Supported API: false

Specified by:

writeExternal in interface Externalizable

Parameters:

output -

Throws:

IOException

readExternal

public void readExternal(ObjectInput input)
                  throws IOException,
                         ClassNotFoundException

Reads the non-transient fields of this class from an external source.

Supported API: false

Specified by:

readExternal in interface Externalizable

Parameters:

input -

Throws:

IOException

ClassNotFoundException

readVersion

protected boolean readVersion(FederationServerHelper thisObject,
                              ObjectInput input,
                              long readSerialVersionUID,
                              boolean passThrough,
                              boolean superDone)
                       throws IOException,
                              ClassNotFoundException

Reads the non-transient fields of this class from an external source.

Supported API: false

Parameters:

thisObject -

input -

readSerialVersionUID -

passThrough -

superDone -

Returns:

boolean

Throws:

IOException

ClassNotFoundException

readOldVersion

private boolean readOldVersion(ObjectInput input,
                               long readSerialVersionUID,
                               boolean passThrough,
                               boolean superDone)
                        throws IOException,
                               ClassNotFoundException

Reads the non-transient fields of this class from an external source, which is not the current version.

Parameters:

input -

readSerialVersionUID -

passThrough -

superDone -

Returns:

boolean

Throws:

IOException

ClassNotFoundException

getFederatedSubclass

public static Class getFederatedSubclass(Class objectClass)
                                  throws FederationServicesException

Finds a subclass of the specified class that implements the Federated interface.

Supported API: false

Parameters:

objectClass - the class to find a Federated subclasses of.

Returns:

Class

Throws:

FederationServicesException

hasExpired

public static boolean hasExpired(Federated proxy)
                          throws FederationServicesException

Returns true if the specified proxy object has expired.

Supported API: true

Parameters:

proxy - the proxy object.

Returns:

boolean

Throws:

FederationServicesException

initializeProxy

public static void initializeProxy(Federated proxy,
                                   FederatedService service)
                            throws FederationServicesException

Initializes the properties of a proxy object that control expiration and refreshing.

Supported API: false

Parameters:

proxy - the proxy object to be initialized.

service - the FederatedService that maintains the proxy object.

Throws:

FederationServicesException

isStale

public static boolean isStale(Federated proxy)
                       throws FederationServicesException

Returns true if the specified proxy object is stale.

Supported API: true

Parameters:

proxy - the proxy object.

Returns:

boolean

Throws:

FederationServicesException