gate.util.persistence
Class PersistenceManager.SlashDevSlashNull

java.lang.Object
  gate.util.persistence.PersistenceManager.SlashDevSlashNull

All Implemented Interfaces:

Persistence, Serializable

Enclosing class:

PersistenceManager

public static class PersistenceManager.SlashDevSlashNull
extends Object
implements Persistence

This class is used as a marker for types that should NOT be serialised when saving the state of a gate object. Registering this type as the persistent equivalent for a specific class (via PersistenceManager.registerPersitentEquivalent(Class , Class)) effectively stops all values of the specified type from being serialised. Maps that contain values that should not be serialised will have that entry removed. In any other places where such values occur they will be replaced by null after deserialisation.

See Also:

Serialized Form

Constructor Summary

PersistenceManager.SlashDevSlashNull()

Method Summary

Object	createObject() Returns null
void	extractDataFromSource(Object source) Does nothing

Methods inherited from class java.lang.Object

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

Constructor Detail

PersistenceManager.SlashDevSlashNull

public PersistenceManager.SlashDevSlashNull()

Method Detail

extractDataFromSource

public void extractDataFromSource(Object source)
                           throws PersistenceException

Does nothing

Specified by:

extractDataFromSource in interface Persistence

Throws:

PersistenceException

createObject

public Object createObject()
                    throws PersistenceException,
                           ResourceInstantiationException

Returns null

Specified by:

createObject in interface Persistence

Throws:

PersistenceException

ResourceInstantiationException