1 /*
2 * Copyright (c) 2002-2014, Mairie de Paris
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice
10 * and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice
13 * and the following disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * 3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 *
32 * License 1.0
33 */
34 package fr.paris.lutece.plugins.tagcloud.service;
35
36 import fr.paris.lutece.plugins.tagcloud.business.Tag;
37
38 import java.util.ArrayList;
39 import java.util.Date;
40 import java.util.Random;
41
42
43 /**
44 *
45 * This class randomize the tags position
46 */
47 public class RandomTagService implements ITransformationService
48 {
49 public RandomTagService( )
50 {
51 }
52
53 /**
54 * Responsible for transformation of tag attributes found in a list
55 * @param listTags The list of tags
56 * @return A list of tags
57 */
58 public ArrayList<Tag> transform( ArrayList<Tag> listTags )
59 {
60 Random random = new Random( new Date( ).getTime( ) );
61 int nSize = listTags.size( );
62
63 for ( int i = 0; i < ( 2 * nSize ); i++ )
64 {
65 int nRandom = random.nextInt( nSize );
66 Tag tagElement = listTags.get( nRandom );
67 listTags.remove( nRandom );
68 listTags.add( tagElement );
69 }
70
71 return listTags;
72 }
73 }