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.whatsnew.utils.sort;
35
36 import fr.paris.lutece.plugins.whatsnew.business.ElementOrderEnum;
37 import fr.paris.lutece.plugins.whatsnew.business.IWhatsNew;
38
39 import java.io.Serializable;
40
41 import java.util.Comparator;
42
43
44 /**
45 *
46 * WhatsNewComparator
47 *
48 */
49 public class WhatsNewComparator implements Comparator<IWhatsNew>, Serializable
50 {
51 private static final long serialVersionUID = 1035663950193810359L;
52 private int _nOrder;
53 private boolean _bIsAscSort;
54
55 /**
56 * Constructor
57 * @param nOrder order
58 * @param bIsAscSort true if it is sorted asc, false otherwise
59 */
60 public WhatsNewComparator( int nOrder, boolean bIsAscSort )
61 {
62 _nOrder = nOrder;
63 _bIsAscSort = bIsAscSort;
64 }
65
66 /**
67 * Compare two WhatsNew
68 * @param w1 WhatsNew 1
69 * @param w2 WhatsNew 2
70 * @return in the ascending sort :
71 * <ul>
72 * <li>< 0 if w1 is before w2</li>
73 * <li>0 if w1 equals w2</li>
74 * <li>> 0 if w1 is after w2</li>
75 * </ul>
76 */
77 public int compare( IWhatsNew w1, IWhatsNew w2 )
78 {
79 int nStatus = 0;
80
81 if ( ( w1 != null ) && ( w2 != null ) )
82 {
83 if ( _nOrder == ElementOrderEnum.DATE.getId( ) )
84 {
85 if ( ( w1.getDateUpdate( ) != null ) && ( w2.getDateUpdate( ) != null ) )
86 {
87 nStatus = w1.getDateUpdate( ).compareTo( w2.getDateUpdate( ) );
88 }
89 else if ( ( w1.getDateUpdate( ) == null ) && ( w2.getDateUpdate( ) != null ) )
90 {
91 nStatus = -1;
92 }
93 else if ( ( w1.getDateUpdate( ) != null ) && ( w2.getDateUpdate( ) == null ) )
94 {
95 nStatus = 1;
96 }
97 }
98 else if ( _nOrder == ElementOrderEnum.ALPHA.getId( ) )
99 {
100 if ( ( w1.getTitle( ) != null ) && ( w2.getTitle( ) != null ) )
101 {
102 nStatus = w1.getTitle( ).toUpperCase( ).compareTo( w2.getTitle( ).toUpperCase( ) );
103 }
104 else if ( ( w1.getTitle( ) == null ) && ( w2.getTitle( ) != null ) )
105 {
106 nStatus = -1;
107 }
108 else if ( ( w1.getTitle( ) != null ) && ( w2.getTitle( ) == null ) )
109 {
110 nStatus = 1;
111 }
112 }
113
114 if ( ( nStatus != 0 ) && !_bIsAscSort )
115 {
116 nStatus = nStatus * ( -1 );
117 }
118 }
119
120 return nStatus;
121 }
122 }