1 /*
2 * Copyright (c) 2002-2018, 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.directory.modules.multiview.util;
35
36 import java.io.Serializable;
37 import java.util.Comparator;
38
39 import org.apache.commons.lang3.math.NumberUtils;
40
41 import fr.paris.lutece.util.ReferenceItem;
42
43 /**
44 * Comparator for ReferenceItem
45 */
46 public class ReferenceItemComparator implements Comparator<ReferenceItem>, Serializable
47 {
48 // Generated UID
49 private static final long serialVersionUID = -177021185525287854L;
50
51 /**
52 * {@inheritDoc}
53 */
54 @Override
55 public int compare( ReferenceItem referenceItemOne, ReferenceItem referenceItemTwo )
56 {
57 int nComparisonResult = NumberUtils.INTEGER_ZERO;
58
59 if ( referenceItemOne != null )
60 {
61 if ( referenceItemTwo != null )
62 {
63 String strReferenceItemNameOne = referenceItemOne.getName( );
64 String strReferenceItemNameTwo = referenceItemTwo.getName( );
65
66 nComparisonResult = compareReferenceItemName( strReferenceItemNameOne, strReferenceItemNameTwo );
67 }
68 else
69 {
70 nComparisonResult = NumberUtils.INTEGER_ONE;
71 }
72 }
73 else
74 {
75 if ( referenceItemTwo != null )
76 {
77 nComparisonResult = NumberUtils.INTEGER_MINUS_ONE;
78 }
79 else
80 {
81 nComparisonResult = NumberUtils.INTEGER_ZERO;
82 }
83 }
84
85 return nComparisonResult;
86 }
87
88 /**
89 * Make the comparison between the two given ReferenceItem names
90 *
91 * @param strReferenceItemNameOne
92 * The first name of the ReferenceItem to compare
93 * @param strReferenceItemNameTwo
94 * The second name of the ReferenceItem to compare
95 * @return the comparison between the two given ReferenceItem names
96 */
97 private int compareReferenceItemName( String strReferenceItemNameOne, String strReferenceItemNameTwo )
98 {
99 int nComparisonResult = NumberUtils.INTEGER_ZERO;
100
101 if ( strReferenceItemNameOne == null )
102 {
103 if ( strReferenceItemNameTwo != null )
104 {
105 nComparisonResult = NumberUtils.INTEGER_MINUS_ONE;
106 }
107 }
108 else
109 {
110 if ( strReferenceItemNameTwo == null )
111 {
112 nComparisonResult = NumberUtils.INTEGER_ONE;
113 }
114 else
115 {
116 nComparisonResult = strReferenceItemNameOne.compareTo( strReferenceItemNameTwo );
117 }
118 }
119
120 return nComparisonResult;
121 }
122 }