// This Source Code is in the Public Domain per: http://unlicense.org
package org.litesoft.bo.change;

import java.io.*;

import org.litesoft.bo.*;

public interface IChangeTrackingObject extends BoAccessor,
                                               Serializable
{
    public static final int INITIAL_CHANGE_NUMBER = 0;

    public void initialize();

    public boolean isChangeAllowed();

    public int getChangeNumber();

    public boolean isDirty();

    public void requestDelete();

    public boolean isDeleteRequested();

    public boolean isNew();

    public boolean isAnyAttributeChanged();

    /**
     * @return if Attribute exists && it has changed
     */
    public boolean isAttributeChanged( String pAttributeName );

    public String[] getChangedAttributeNames();

    public boolean isOriginalValueAvailableFor( String pAttributeName );

    public Object getOriginalValueFor( String pAttributeName );
}