Java Collection Difference diffColls(Collection oldColl, Collection newColl)

Description

diff Colls

License

Open Source License

Declaration

public static List<Object[]> diffColls(Collection<?> oldColl, Collection<?> newColl) 

Method Source Code

//package com.java2s;
/**// ww w.j a v  a 2  s  .co m
 *   GRANITE DATA SERVICES
 *   Copyright (C) 2006-2015 GRANITE DATA SERVICES S.A.S.
 *
 *   This file is part of the Granite Data Services Platform.
 *
 *   Granite Data Services 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.
 *
 *   Granite Data Services 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.
 *
 *   You should have received a copy of the GNU Lesser General Public
 *   License along with this library; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
 *   USA, or see <http://www.gnu.org/licenses/>.
 */

import java.util.*;

public class Main {
    public static List<Object[]> diffColls(Collection<?> oldColl, Collection<?> newColl) {
        List<Object[]> ops = new ArrayList<Object[]>();
        for (Object newElt : newColl) {
            if (!oldColl.contains(newElt))
                ops.add(new Object[] { 1, null, newElt });
        }
        for (Object oldElt : oldColl) {
            if (!newColl.contains(oldElt))
                ops.add(new Object[] { -1, null, oldElt });
        }

        return ops;
    }
}

Related

1. computeDifferenceIndices(Collection smallCollection, Collection bigCollection)
2. diff(Collection c1, Collection c2)
3. difference(Collection set1, Collection set2)
4. difference(Collection collection1, Collection result, Collection collection2)
5. difference(Collection a, Collection b)
6. difference(final Collection c1, final Collection c2)