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1
19
25
26 package org.netbeans.modules.j2ee.sun.dd.impl;
27
28 import org.netbeans.modules.j2ee.sun.dd.impl.transform.*;
29 import org.netbeans.modules.j2ee.sun.dd.api.web.SunWebApp;
30 import org.netbeans.modules.j2ee.sun.dd.api.ejb.SunEjbJar;
31 import org.netbeans.modules.j2ee.sun.dd.api.client.SunApplicationClient;
32
33 import java.util.Vector  ;
34 import java.util.Arrays ;
35 import java.util.HashSet ;
36
37 import org.w3c.dom.Element ;
38 import org.w3c.dom.Document ;
39 import org.w3c.dom.NodeList ;
40 import org.w3c.dom.Node ;
41
42
55 public class DDTreeWalker {
56
57 Document document;
58 String downgradeVersion;
59 String currentVersion;
60 Transform transInfo;
61 String DATAFILE = "org/netbeans/modules/j2ee/sun/dd/impl/transform/transform.xml";
63
66 public DDTreeWalker(Document document, String version, String currVersion) {
67 this.document = document;
68 this.downgradeVersion = version;
69 this.currentVersion = currVersion;
70 }
71
72 public void downgradeSunWebAppDocument(){
73 this.transInfo = getTransformInfo();
74 if(transInfo != null) {
75 Vector modElementsList = new Vector ();
76 Xmltype type = null;
77 if(currentVersion.equals(SunWebApp.VERSION_2_5_0)){
78 type = getXmlType(transInfo, "sunWebApp41");
79 modElementsList = updateModElementsList(modElementsList, type);
80 }
81 if(this.downgradeVersion.equals(SunWebApp.VERSION_2_4_0) || this.downgradeVersion.equals(SunWebApp.VERSION_2_3_0)){
82 type = getXmlType(transInfo, "sunWebApp40");
83 modElementsList = updateModElementsList(modElementsList, type);
84 }
85 if(this.downgradeVersion.equals(SunWebApp.VERSION_2_3_0)){
86 type = getXmlType(transInfo, "sunWebApp30");
87 modElementsList = updateModElementsList(modElementsList, type);
88 }
89 processDocument(modElementsList);
90 }
91 }
92
93 public void downgradeSunEjbJarDocument(){
94 this.transInfo = getTransformInfo();
95 if(transInfo != null) {
96 Vector modElementsList = new Vector ();
97 Xmltype type = null;
98 if(currentVersion.equals(SunEjbJar.VERSION_3_0_0)){
99 type = getXmlType(transInfo, "sunEjb211");
100 modElementsList = updateModElementsList(modElementsList, type);
101 }
102 if(this.downgradeVersion.equals(SunEjbJar.VERSION_2_1_0) || this.downgradeVersion.equals(SunEjbJar.VERSION_2_0_0)){
103 type = getXmlType(transInfo, "sunEjb210");
104 modElementsList = updateModElementsList(modElementsList, type);
105 }
106 if(this.downgradeVersion.equals(SunEjbJar.VERSION_2_0_0)){
107 type = getXmlType(transInfo, "sunEjb200");
108 modElementsList = updateModElementsList(modElementsList, type);
109 }
110 processDocument(modElementsList);
111 }
112 }
113
114 public void downgradeSunClientDocument(){
115 this.transInfo = getTransformInfo();
116 if(transInfo != null) {
117 Vector modElementsList = new Vector ();
118 Xmltype type = null;
119 if(currentVersion.equals(SunApplicationClient.VERSION_5_0_0)){
120 type = getXmlType(transInfo, "sunClient41");
121 modElementsList = updateModElementsList(modElementsList, type);
122 }
123 if(this.downgradeVersion.equals(SunApplicationClient.VERSION_1_4_0) || this.downgradeVersion.equals(SunApplicationClient.VERSION_1_3_0)){
124 type = getXmlType(transInfo, "sunClient40");
125 modElementsList = updateModElementsList(modElementsList, type);
126 }
127 if(this.downgradeVersion.equals(SunApplicationClient.VERSION_1_3_0)){
128 type = getXmlType(transInfo, "sunClient30");
129 modElementsList = updateModElementsList(modElementsList, type);
130 }
131 processDocument(modElementsList);
132 }
133 }
134
135 private Vector updateModElementsList(Vector modElementsList, Xmltype type){
136 if(type != null){
137 ModElement[] elementsList = type.getModElement();
138 modElementsList.addAll(new HashSet (Arrays.asList(elementsList)));
139 }
140 return modElementsList;
141 }
142
143 private void processDocument(Vector elements){
144 Element element = document.getDocumentElement();
145 visitElement(element, elements);
146 }
147
148 private void visitElement(Element element, Vector elements) {
149 walkElement(element, elements);
150 NodeList nodes = element.getChildNodes();
151 for (int i = 0; i < nodes.getLength(); i++) {
152 Node node = nodes.item(i);
153 switch (node.getNodeType()) {
154 case Node.ELEMENT_NODE:
155 Element nodeElement = (Element )node;
156 String nodeElementName = nodeElement.getTagName();
157 walkElement(nodeElement, elements);
158 visitElement(nodeElement, elements);
159 continue;
160 }
161 }
162 }
163
164 private void walkElement(Element element, Vector elements){
165 Object [] elementsList = elements.toArray();
166 for(int i=0; i<elementsList.length; i++){
167 ModElement eachElement = (ModElement)elementsList[i];
168 if ((element != null) && element.getTagName().equals(eachElement.getName())) {
169 ModAttribute[] attrList = eachElement.getModAttribute();
170 for(int j=0; j<attrList.length; j++){
171 removeAttribute(element, attrList[j].getName());
172 }
173 SubElement[] subelements = eachElement.getSubElement();
174 for(int l=0; l<subelements.length; l++){
175 String removeElement = subelements[l].getName();
176 removeElement(element, removeElement);
177 }
178 }
179 } }
181
182 private void removeAttribute(Element element, String attrName){
183 org.w3c.dom.NamedNodeMap attrs = element.getAttributes();
184 for (int in = 0; in < attrs.getLength(); in++) {
185 org.w3c.dom.Attr attr = (org.w3c.dom.Attr )attrs.item(in);
186 if (attr.getName().equals(attrName)) {
187 element.removeAttributeNode(attr);
188 }
189 }
190 }
191
192 private void removeElement(Element element, String elementName){
193 NodeList nodes = element.getChildNodes();
194 for (int i = 0; i < nodes.getLength(); i++) {
195 Node node = nodes.item(i);
196 switch (node.getNodeType()) {
197 case Node.ELEMENT_NODE:
198 Element nodeElement = (Element )node;
199 if (nodeElement.getTagName().equals(elementName)) {
200 element.removeChild(node);
201 }
202 break;
203 }
204 } }
206
207 public Xmltype getXmlType(Transform transformInfo, String webAppVersion) {
208 Xmltype[] types = transformInfo.getXmltype();
209 for (int i = 0; i < types.length; i++) {
210 if (types[i].getName().equals(webAppVersion)){
211 return types[i];
212 }
213 }
214 return null;
215 }
216
217 public Transform getTransformInfo(){
218 try{
219 java.io.InputStream in = Transform.class.getClassLoader().getResourceAsStream(DATAFILE);
220 this.transInfo = Transform.createGraph(in);
221 in.close();
222 }catch(Exception ex){
223 }
225 return this.transInfo;
226 }
227
228
229 }
230 |
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