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21 package oracle.toplink.essentials.platform.xml;
23
24 import org.w3c.dom.Attr  ;
25 import org.w3c.dom.Comment ;
26 import org.w3c.dom.Document ;
27 import org.w3c.dom.DocumentFragment ;
28 import org.w3c.dom.DocumentType ;
29 import org.w3c.dom.Element ;
30 import org.w3c.dom.EntityReference ;
31 import org.w3c.dom.NamedNodeMap ;
32 import org.w3c.dom.Node ;
33 import org.w3c.dom.NodeList ;
34 import org.w3c.dom.ProcessingInstruction ;
35 import org.w3c.dom.Text ;
36
37
40 public class XMLComparer {
41 public XMLComparer() {
42 super();
43 }
44
45
51 public boolean isNodeEqual(Node control, Node test) {
52 if (control == test) {
53 return true;
54 } else if ((null == control) || (null == test)) {
55 return false;
56 } else if (control.getNodeType() != test.getNodeType()) {
57 return false;
58 }
59 switch (control.getNodeType()) {
60 case (Node.ATTRIBUTE_NODE):
61 return isAttributeEqual((Attr )control, (Attr )test);
62 case (Node.CDATA_SECTION_NODE):
63 return isTextEqual((Text )control, (Text )test);
64 case (Node.COMMENT_NODE):
65 return isCommentEqual((Comment )control, (Comment )test);
66 case (Node.DOCUMENT_FRAGMENT_NODE):
67 return isDocumentFragmentEqual((DocumentFragment )control, (DocumentFragment )test);
68 case (Node.DOCUMENT_NODE):
69 return isDocumentEqual((Document )control, (Document )test);
70 case (Node.DOCUMENT_TYPE_NODE):
71 return isDocumentTypeEqual((DocumentType )control, (DocumentType )test);
72 case (Node.ELEMENT_NODE):
73 return isElementEqual((Element )control, (Element )test);
74 case (Node.ENTITY_NODE):
75 return false;
76 case (Node.ENTITY_REFERENCE_NODE):
77 return isEntityReferenceEqual((EntityReference )control, (EntityReference )test);
78 case (Node.NOTATION_NODE):
79 return false;
80 case (Node.PROCESSING_INSTRUCTION_NODE):
81 return isProcessingInstructionEqual((ProcessingInstruction )control, (ProcessingInstruction )test);
82 case (Node.TEXT_NODE):
83 return isTextEqual((Text )control, (Text )test);
84 default:
85 return true;
86 }
87 }
88
89 private boolean isAttributeEqual(Attr control, Attr test) {
90 if (!isStringEqual(control.getNamespaceURI(), test.getNamespaceURI())) {
91 return false;
92 }
93 if (!isStringEqual(control.getName(), test.getName())) {
94 return false;
95 }
96 if (!isStringEqual(control.getNodeValue(), test.getNodeValue())) {
97 return false;
98 }
99 return true;
100 }
101
102 private boolean isCommentEqual(Comment control, Comment test) {
103 if (!isStringEqual(control.getNodeValue(), test.getNodeValue())) {
104 return false;
105 }
106 return true;
107 }
108
109 private boolean isDocumentEqual(Document control, Document test) {
110 if (!isDocumentTypeEqual(control.getDoctype(), test.getDoctype())) {
111 return false;
112 }
113
114 Element controlRootElement = control.getDocumentElement();
115 Element testRootElement = test.getDocumentElement();
116 if (controlRootElement == testRootElement) {
117 return true;
118 } else if ((null == controlRootElement) || (null == testRootElement)) {
119 return false;
120 }
121 return isElementEqual(controlRootElement, testRootElement);
122 }
123
124 private boolean isDocumentFragmentEqual(DocumentFragment control, DocumentFragment test) {
125 return isNodeListEqual(control.getChildNodes(), test.getChildNodes());
126 }
127
128 private boolean isDocumentTypeEqual(DocumentType control, DocumentType test) {
129 if (control == test) {
130 return true;
131 } else if ((null == control) || (null == test)) {
132 return false;
133 }
134
135 if (!isStringEqual(control.getName(), test.getName())) {
136 return false;
137 }
138 if (!isStringEqual(control.getPublicId(), test.getPublicId())) {
139 return false;
140 }
141 if (!isStringEqual(control.getSystemId(), test.getSystemId())) {
142 return false;
143 }
144
145 return true;
146 }
147
148 private boolean isElementEqual(Element control, Element test) {
149 if (!isStringEqual(control.getNamespaceURI(), test.getNamespaceURI())) {
150 return false;
151 }
152 if (!isStringEqual(control.getTagName(), test.getTagName())) {
153 return false;
154 }
155
156 NamedNodeMap controlAttributes = control.getAttributes();
158 NamedNodeMap testAttributes = test.getAttributes();
159 int numberOfControlAttributes = controlAttributes.getLength();
160 if (numberOfControlAttributes != testAttributes.getLength()) {
161 return false;
162 }
163 Attr controlAttribute;
164 Attr testAttribute;
165 for (int x = 0; x < numberOfControlAttributes; x++) {
166 controlAttribute = (Attr )controlAttributes.item(x);
167 if (null == controlAttribute.getNamespaceURI()) {
168 testAttribute = (Attr )testAttributes.getNamedItem(controlAttribute.getNodeName());
169 } else {
170 testAttribute = (Attr )testAttributes.getNamedItemNS(controlAttribute.getNamespaceURI(), controlAttribute.getLocalName());
171 }
172 if (null == testAttribute) {
173 return false;
174 } else if (!isAttributeEqual(controlAttribute, testAttribute)) {
175 return false;
176 }
177 }
178
179 return isNodeListEqual(control.getChildNodes(), test.getChildNodes());
181 }
182
183 private boolean isEntityReferenceEqual(EntityReference control, EntityReference test) {
184 if (!isStringEqual(control.getNodeName(), test.getNodeName())) {
185 return false;
186 }
187 return true;
188 }
189
190 private boolean isProcessingInstructionEqual(ProcessingInstruction control, ProcessingInstruction test) {
191 if (!isStringEqual(control.getTarget(), test.getTarget())) {
192 return false;
193 }
194 if (!isStringEqual(control.getData(), test.getData())) {
195 return false;
196 }
197 return true;
198 }
199
200 private boolean isTextEqual(Text control, Text test) {
201 return isStringEqual(control.getNodeValue(), test.getNodeValue());
202 }
203
204 private boolean isNodeListEqual(NodeList control, NodeList test) {
205 int numberOfControlNodes = control.getLength();
206 if (numberOfControlNodes != test.getLength()) {
207 return false;
208 }
209 for (int x = 0; x < numberOfControlNodes; x++) {
210 if (!isNodeEqual(control.item(x), test.item(x))) {
211 return false;
212 }
213 }
214 return true;
215 }
216
217 private boolean isStringEqual(String control, String test) {
218 if (control == test) {
219 return true;
220 } else if (null == control) {
221 return false;
222 } else {
223 return control.equals(test);
224 }
225 }
226 }
227 |
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