1
19
20 package com.liferay.portal.tools.comparator;
21
22 import java.util.Comparator;
23 import java.util.List;
24
25
31 public class ColumnsComparator implements Comparator<Object> {
32
33 public ColumnsComparator(String columnName) {
34 this(new String[] {columnName});
35 }
36
37 public ColumnsComparator(List<String> columnNames) {
38 this(columnNames.toArray(new String[columnNames.size()]));
39 }
40
41 public ColumnsComparator(String[] columnNames) {
42 _columnNames = columnNames;
43 }
44
45 public int compare(Object obj1, Object obj2) {
46 Object[] column1 = (Object[])obj1;
47 Object[] column2 = (Object[])obj2;
48
49 String columnName1 = (String)column1[0];
50 String columnName2 = (String)column2[0];
51
52 int x = -1;
53
54 for (int i = 0; i < _columnNames.length; i++) {
55 if (_columnNames[i].equals(columnName1)) {
56 x = i;
57
58 break;
59 }
60 }
61
62 int y = -1;
63
64 for (int i = 0; i < _columnNames.length; i++) {
65 if (_columnNames[i].equals(columnName2)) {
66 y = i;
67
68 break;
69 }
70 }
71
72 if ((x == -1) && (y > -1)) {
73 return 1;
74 }
75 else if ((x > -1) && (y == -1)) {
76 return -1;
77 }
78 else if ((x > -1) && (y > -1)) {
79 if (x < y) {
80 return -1;
81 }
82 else if (x > y) {
83 return 1;
84 }
85 }
86
87 return 0;
88 }
89
90 private String[] _columnNames;
91
92 }