org.polymap.core.qi4j.event.StoredPropertyChangeEvent.java Source code

Introduction

Here is the source code for org.polymap.core.qi4j.event.StoredPropertyChangeEvent.java

Source

/* 
 * polymap.org
 * Copyright 2011, Falko Brutigam, and other contributors as
 * indicated by the @authors tag. All rights reserved.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 */
package org.polymap.core.qi4j.event;

import java.beans.PropertyChangeEvent;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import org.qi4j.api.entity.association.Association;
import org.qi4j.api.entity.association.ManyAssociation;
import org.qi4j.api.property.Property;

import org.polymap.core.model.ModelProperty;
import org.polymap.core.model.TransientProperty;

/**
 * This interface indicates that the property that was changed was a stored property,
 * instead of an event that was fired via {@link ModelProperty} or
 * {@link TransientProperty}. This event is fired by {@link PropertyChangeSupport}.
 * 
 * @author <a href="http://www.polymap.de">Falko Brutigam</a>
 */
public class StoredPropertyChangeEvent extends PropertyChangeEvent {

    private static Log log = LogFactory.getLog(StoredPropertyChangeEvent.class);

    private Object propOrAssoc;

    public StoredPropertyChangeEvent(Object source, String propertyName, Object oldValue, Object newValue,
            Object propOrAssoc) {
        super(source, propertyName, oldValue, newValue);
        this.propOrAssoc = propOrAssoc;
    }

    public String toString() {
        return "StoredPropertyChangeEvent [source=" + source + ", getNewValue()=" + getNewValue()
                + ", getOldValue()=" + getOldValue() + "]";
    }

    public Property getProperty() {
        return propOrAssoc instanceof Property ? (Property) propOrAssoc : null;
    }

    public Association getAssociation() {
        return propOrAssoc instanceof Association ? (Association) propOrAssoc : null;
    }

    public ManyAssociation getManyAssociation() {
        return propOrAssoc instanceof ManyAssociation ? (ManyAssociation) propOrAssoc : null;
    }

}