EDIT

// $Id$

/**

* Copyright (C) 2015 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.api.application;

import java.util.HashSet;

import java.util.Set;

import eu.etaxonomy.cdm.model.common.CdmBase;

/**

 * @author cmathew

 * @date 7 Apr 2015

 *

 */

public class CdmChangeEvent {

    public enum Action {

        Create,

        Update,

        Delete

    }

    private final Action action;

    private final Set<CdmBase> changedObjects;

    private final Class sourceType;

    private Object source;

    public CdmChangeEvent(Action action, Set<CdmBase> changedObjects, Class sourceType) {

        this.action = action;

        this.changedObjects = changedObjects;

        this.sourceType = sourceType;

    }

    public CdmChangeEvent(Action action, CdmBase changedObject, Class sourceType) {

        this.action = action;

        changedObjects = new HashSet<CdmBase>();

        changedObjects.add(changedObject);

        this.sourceType = sourceType;

    }

    public CdmChangeEvent(Action action, Set<CdmBase> changedObjects, Object source) {

        this(action, changedObjects, source.getClass());

        this.source = source;

    }

    /**

     * @return the action

     */

    public Action getAction() {

        return action;

    }

    /**

     * @return the changedObjects

     */

    public Set<? extends CdmBase> getChangedObjects() {

        return changedObjects;

    }

    /**

     * @return the sourceType

     */

    public Class getSourceType() {

        return sourceType;

    }

    /**

     * @return the source

     */

    public Object getSource() {

        return source;

    }

    public boolean hasChanges() {

        return changedObjects != null && !changedObjects.isEmpty();

    }

}