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/*
* PersistenceMemberElementImpl.java
*
* Created on March 2, 2000, 5:17 PM
*/
package com.sun.jdo.api.persistence.model.jdo.impl;
import java.beans.PropertyVetoException;
import com.sun.jdo.api.persistence.model.jdo.PersistenceMemberElement;
import com.sun.jdo.api.persistence.model.jdo.PersistenceClassElement;
/**
*
* @author raccah
* @version %I%
*/
public abstract class PersistenceMemberElementImpl
extends PersistenceElementImpl implements PersistenceMemberElement.Impl
{
/** Create new PersistenceMemberElementImpl with no corresponding name.
* This constructor should only be used for cloning and archiving.
*/
public PersistenceMemberElementImpl ()
{
this(null);
}
/** Creates new PersistenceMemberElementImpl with the corresponding name
* @param name the name of the element
*/
public PersistenceMemberElementImpl (String name)
{
super(name);
}
/** Fires property change event. This method overrides that of
* PersistenceElementImpl to update the PersistenceClassElementImpl's
* modified status.
* @param name property name
* @param o old value
* @param n new value
*/
protected final void firePropertyChange (String name, Object o, Object n)
{
// even though o == null and n == null will signify a change, that
// is consistent with PropertyChangeSupport's behavior and is
// necessary for this to work
boolean noChange = ((o != null) && (n != null) && o.equals(n));
PersistenceClassElement classElement =
((PersistenceMemberElement)_element).getDeclaringClass();
super.firePropertyChange(name, o, n);
if ((classElement != null) && !noChange)
classElement.setModified(true);
}
/** Fires vetoable change event. This method overrides that of
* PersistenceElementImpl to give listeners a chance to block
* changes on the persistence class element modified status.
* @param name property name
* @param o old value
* @param n new value
* @exception PropertyVetoException when the change is vetoed by a listener
*/
protected final void fireVetoableChange (String name, Object o, Object n)
throws PropertyVetoException
{
// even though o == null and n == null will signify a change, that
// is consistent with PropertyChangeSupport's behavior and is
// necessary for this to work
boolean noChange = ((o != null) && (n != null) && o.equals(n));
PersistenceClassElement classElement =
((PersistenceMemberElement)_element).getDeclaringClass();
super.fireVetoableChange(name, o, n);
if ((classElement != null) && !noChange)
{
((PersistenceElementImpl)classElement.getImpl()).
fireVetoableChange(PROP_MODIFIED, Boolean.FALSE, Boolean.TRUE);
}
}
}