mirror of
https://github.com/Alfresco/alfresco-community-repo.git
synced 2025-06-30 18:15:39 +00:00
db8181d496
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@16381 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
110 lines
3.6 KiB
Java
110 lines
3.6 KiB
Java
/*
|
|
* Copyright (C) 2005-2007 Alfresco Software Limited.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
|
|
* This program 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 General Public License for more details.
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
|
|
* As a special exception to the terms and conditions of version 2.0 of
|
|
* the GPL, you may redistribute this Program in connection with Free/Libre
|
|
* and Open Source Software ("FLOSS") applications as described in Alfresco's
|
|
* FLOSS exception. You should have recieved a copy of the text describing
|
|
* the FLOSS exception, and it is also available here:
|
|
* http://www.alfresco.com/legal/licensing"
|
|
*/
|
|
package org.alfresco.util;
|
|
|
|
import java.io.Serializable;
|
|
import java.util.Collections;
|
|
import java.util.HashMap;
|
|
import java.util.Map;
|
|
|
|
import org.alfresco.service.namespace.QName;
|
|
|
|
/**
|
|
* Property map helper class.
|
|
* <p>
|
|
* This class can be used as a short hand when a class of type
|
|
* Map<QName, Serializable> is required.
|
|
*
|
|
* @author Roy Wetherall
|
|
*/
|
|
public class PropertyMap extends HashMap<QName, Serializable>
|
|
{
|
|
private static final long serialVersionUID = 8052326301073209645L;
|
|
|
|
/**
|
|
* A static empty map to us when having to deal with nulls
|
|
*/
|
|
public static final Map<QName, Serializable> EMPTY_MAP = Collections.<QName, Serializable>emptyMap();
|
|
|
|
/**
|
|
* @see HashMap#HashMap(int, float)
|
|
*/
|
|
public PropertyMap(int initialCapacity, float loadFactor)
|
|
{
|
|
super(initialCapacity, loadFactor);
|
|
}
|
|
|
|
/**
|
|
* @see HashMap#HashMap(int)
|
|
*/
|
|
public PropertyMap(int initialCapacity)
|
|
{
|
|
super(initialCapacity);
|
|
}
|
|
|
|
/**
|
|
* @see HashMap#HashMap()
|
|
*/
|
|
public PropertyMap()
|
|
{
|
|
super();
|
|
}
|
|
|
|
/**
|
|
* Utility method to remove unchanged entries from each map.
|
|
*
|
|
* @param before the properties before (may be <tt>null</tt>)
|
|
* @param after the properties after (may be <tt>null</tt>)
|
|
* @return Return a map of values that <b>changed</b> from before to after.
|
|
* The before value is first and the after value is second.
|
|
*
|
|
* @since 3.2
|
|
*/
|
|
public static Pair<Map<QName, Serializable>, Map<QName, Serializable>> getBeforeAndAfterMapsForChanges(
|
|
Map<QName, Serializable> before,
|
|
Map<QName, Serializable> after)
|
|
{
|
|
// Shortcuts
|
|
if (before == null)
|
|
{
|
|
before = Collections.emptyMap();
|
|
}
|
|
if (after == null)
|
|
{
|
|
after = Collections.emptyMap();
|
|
}
|
|
|
|
// Get after values that changed
|
|
Map<QName, Serializable> afterDelta = new HashMap<QName, Serializable>(after);
|
|
afterDelta.entrySet().removeAll(before.entrySet());
|
|
// Get before values that changed
|
|
Map<QName, Serializable> beforeDelta = new HashMap<QName, Serializable>(before);
|
|
beforeDelta.entrySet().removeAll(after.entrySet());
|
|
|
|
// Done
|
|
return new Pair<Map<QName, Serializable>, Map<QName, Serializable>>(beforeDelta, afterDelta);
|
|
}
|
|
}
|