/*******************************************************************************
* Copyright (c) 2005 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
/*
*/
package org.eclipse.jem.internal.beaninfo.common;
import java.io.ObjectStreamException;
import java.io.Serializable;
/**
* An indicator object for invalid object type. This is used with feature attribute
* values from the BeanInfo classes. We can only handle certain types when we
* bring them over from the BeanInfo VM. That is because the classes instantiated
* in the BeanInfo class may not be available in the IDE. So any invalid value
* will be replaced by this class instance.
* <p>
* This is a singleton class.
* There will be one instance (InvalidObject.INSTANCE) in the system. That way
* "==" can be used to test for it.
*
* @since 1.1.0
*/
public class InvalidObject implements Serializable {
/**
* Singleton instance of InvalidObject.
* @since 1.1.0
*/
public static final InvalidObject INSTANCE = new InvalidObject();
private static final long serialVersionUID = 1105643804370L;
/*
* Nobody else should create one of these.
*/
private InvalidObject() {
}
private Object readResolve() throws ObjectStreamException {
return INSTANCE;
}
}