1
22
23 package com.liferay.util.xml;
24
25 import java.util.Comparator;
26 import java.util.List;
27
28 import org.dom4j.Attribute;
29 import org.dom4j.Element;
30
31
37 public class ElementComparator implements Comparator<Element> {
38
39 public int compare(Element el1, Element el2) {
40 String el1Name = el1.getName();
41 String el2Name = el2.getName();
42
43 if (!el1Name.equals(el2Name)) {
44 return el1Name.compareTo(el2Name);
45 }
46
47 String el1Text = el1.getTextTrim();
48 String el2Text = el2.getTextTrim();
49
50 if (!el1Text.equals(el2Text)) {
51 return el1Text.compareTo(el2Text);
52 }
53
54 List<Attribute> el1Attrs = el1.attributes();
55 List<Attribute> el2Attrs = el2.attributes();
56
57 if (el1Attrs.size() < el2Attrs.size()) {
58 return -1;
59 }
60 else if (el1Attrs.size() > el2Attrs.size()) {
61 return 1;
62 }
63
64 for (Attribute attr : el1Attrs) {
65 int value = _compare(el2Attrs, attr, new AttributeComparator());
66
67 if (value != 0) {
68 return value;
69 }
70 }
71
72 List<Element> el1Elements = el1.elements();
73 List<Element> el2Elements = el2.elements();
74
75 if (el1Elements.size() < el2Elements.size()) {
76 return -1;
77 }
78 else if (el1Elements.size() > el2Elements.size()) {
79 return 1;
80 }
81
82 for (Element el : el1Elements) {
83 int value = _compare(el2Elements, el, new ElementComparator());
84
85 if (value != 0) {
86 return value;
87 }
88 }
89
90 return 0;
91 }
92
93 private int _compare(List<?> list, Object obj, Comparator comparator) {
94 int firstValue = -1;
95
96 for (int i = 0; i < list.size(); i++) {
97 Object o = list.get(i);
98
99 int value = comparator.compare(obj, o);
100
101 if (i == 0) {
102 firstValue = value;
103 }
104
105 if (value == 0) {
106 return 0;
107 }
108 }
109
110 return firstValue;
111 }
112
113 }