1 /*
2 * ModeShape (http://www.modeshape.org)
3 * See the COPYRIGHT.txt file distributed with this work for information
4 * regarding copyright ownership. Some portions may be licensed
5 * to Red Hat, Inc. under one or more contributor license agreements.
6 * See the AUTHORS.txt file in the distribution for a full listing of
7 * individual contributors.
8 *
9 * ModeShape is free software. Unless otherwise indicated, all code in ModeShape
10 * is licensed to you under the terms of the GNU Lesser General Public License as
11 * published by the Free Software Foundation; either version 2.1 of
12 * the License, or (at your option) any later version.
13 *
14 * ModeShape is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this software; if not, write to the Free
21 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
22 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
23 */
24 package org.modeshape.graph.query.process;
25
26 import java.util.Collections;
27 import java.util.Comparator;
28 import java.util.List;
29
30 /**
31 */
32 public class SortLocationsComponent extends DelegatingComponent {
33
34 private Comparator<Object[]> sortingComparator;
35
36 public SortLocationsComponent( ProcessingComponent delegate ) {
37 super(delegate);
38 this.sortingComparator = createSortComparator(delegate.getContext(), delegate.getColumns());
39 }
40
41 public SortLocationsComponent( ProcessingComponent delegate,
42 Comparator<Object[]> sortingComparator ) {
43 super(delegate);
44 this.sortingComparator = sortingComparator;
45 }
46
47 /**
48 * {@inheritDoc}
49 *
50 * @see org.modeshape.graph.query.process.ProcessingComponent#execute()
51 */
52 @Override
53 public List<Object[]> execute() {
54 List<Object[]> tuples = delegate().execute();
55 if (tuples.size() > 1) {
56 // Sort the tuples ...
57 Collections.sort(tuples, sortingComparator);
58 }
59 return tuples;
60 }
61 }