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/********************************************************************************
* Copyright (c) 2002, 2006 IBM Corporation. All rights reserved.
* This program and the accompanying materials are made available under the terms
* of the Eclipse Public License v1.0 which accompanies this distribution, and is
* available at http://www.eclipse.org/legal/epl-v10.html
*
* Initial Contributors:
* The following IBM employees contributed to the Remote System Explorer
* component that contains this file: David McKnight, Kushal Munir,
* Michael Berger, David Dykstal, Phil Coulthard, Don Yantzi, Eric Simpson,
* Emily Bruner, Mazen Faraj, Adrian Storisteanu, Li Ding, and Kent Hawley.
*
* Contributors:
* {Name} (company) - description of contribution.
********************************************************************************/
package org.eclipse.dstore.core.util;
import java.util.ArrayList;
import org.eclipse.dstore.core.model.DataElement;
/**
* Utility class used for sorting a list of DataElements based on
* their depth attributes.
*/
public class Sorter
{
/**
* Sort a list of DataElements based on their depth attributes
* @param list a list of DataElements
* @return a sorted list of DataElements
*/
public static ArrayList sort(ArrayList list)
{
ArrayList sortedList = new ArrayList(list.size());
while (list.size() > 0)
{
DataElement first = findFirst(list);
sortedList.add(first);
}
return sortedList;
}
/**
* Find the DataElement with the highest depth in the list
* @param list a list of DataElements
* @return the DataElement with the highest depth
*/
private static DataElement findFirst(ArrayList list)
{
DataElement result = null;
for (int i = 0; i < list.size(); i++)
{
DataElement item = (DataElement) list.get(i);
if (item != null)
{
int depth = item.depth();
if ((result == null) || (depth > result.depth()))
{
result = item;
}
}
}
list.remove(result);
return result;
}
}
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