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1
19
20 package org.storeconvertor;
21
22 import java.io.IOException  ;
23 import java.util.Iterator ;
24 import org.netbeans.api.convertor.book.Book;
25 import org.netbeans.api.convertor.ConvertorDescriptor;
26 import org.netbeans.api.convertor.ConvertorException;
27 import org.netbeans.api.convertor.Convertors;
28 import org.netbeans.api.convertor.dvd.DVD;
29 import org.netbeans.api.convertor.store.Store;
30 import org.netbeans.spi.convertor.Convertor;
31 import org.w3c.dom.Document ;
32 import org.w3c.dom.Element ;
33 import org.w3c.dom.Node ;
34 import org.w3c.dom.NodeList ;
35 import org.w3c.dom.Text ;
36 import org.xml.sax.ErrorHandler ;
37 import org.xml.sax.InputSource ;
38 import org.xml.sax.SAXException ;
39
40
41
45 public class StoreConvertor implements Convertor {
46
47 private static final String NAMESPACE = "http://www.netbeans.org/ns/store";
48
49 public StoreConvertor() {
50 }
51
52 public Object read(org.w3c.dom.Element element) {
53 if (element.getNodeName().equals("store")) {
54 Store st = new Store();
55 NodeList nodes = element.getChildNodes();
57 for (int i = 0; i < nodes.getLength(); i++) {
58 Node node = nodes.item(i);
59 if (node.getNodeType() == Node.ELEMENT_NODE) {
60 Element e = (Element )node;
61 if (Convertors.canRead(e)) {
62 Object o = Convertors.read(e);
63 if (o instanceof Book) {
64 st.addBook((Book)o);
65 } else if (o instanceof DVD) {
66 st.addDVD((DVD)o);
67 } else {
68 System.err.println("Shopping cart contains unknown item: "+o);
70 }
71 } else {
72 System.err.println("Shopping cart contains item which cannot be convertor: "+e);
74 }
75 }
76 }
77 return st;
78 }
79 if (element.getNodeName().equals("dvd")) {
80 int id = 0;
81 String title = null;
82 String publisher = null;
83 int price = 0;
84 NodeList nodes = element.getChildNodes();
86 for (int i = 0; i < nodes.getLength(); i++) {
87 Node node = nodes.item(i);
88 if (node.getNodeType() == Node.ELEMENT_NODE) {
89 Element e = (Element )node;
90 if (e.getNodeName().equals("id")) {
91 id = Integer.parseInt(getTextValue(e));
92 }
93 if (e.getNodeName().equals("title")) {
94 title = getTextValue(e);
95 }
96 if (e.getNodeName().equals("publisher")) {
97 publisher = getTextValue(e);
98 }
99 if (e.getNodeName().equals("price")) {
100 price = Integer.parseInt(getTextValue(e));
101 }
102 }
103 }
104 return new DVD(id, title, publisher, price);
105 }
106 if (element.getNodeName().equals("book")) {
107 int id = 0;
108 String author = null;
109 String title = null;
110 String publisher = null;
111 int price = 0;
112 NodeList nodes = element.getChildNodes();
114 for (int i = 0; i < nodes.getLength(); i++) {
115 Node node = nodes.item(i);
116 if (node.getNodeType() == Node.ELEMENT_NODE) {
117 Element e = (Element )node;
118 if (e.getNodeName().equals("id")) {
119 id = Integer.parseInt(getTextValue(e));
120 }
121 if (e.getNodeName().equals("title")) {
122 title = getTextValue(e);
123 }
124 if (e.getNodeName().equals("publisher")) {
125 publisher = getTextValue(e);
126 }
127 if (e.getNodeName().equals("author")) {
128 author = getTextValue(e);
129 }
130 if (e.getNodeName().equals("price")) {
131 price = Integer.parseInt(getTextValue(e));
132 }
133 }
134 }
135 return new Book(id, title, author, publisher, price);
136 }
137 throw new ConvertorException("This should never happen");
138 }
139
140 public org.w3c.dom.Element write(Document doc, Object inst) {
141 if (inst instanceof Store) {
142 Store st = (Store)inst;
143 Element element = doc.createElementNS(NAMESPACE, "store");
144
145 Iterator it = st.books.iterator();
146 while (it.hasNext()) {
147 Object o = it.next();
148 Element e = Convertors.write(doc, o);
149 element.appendChild(e);
150 }
151
152 it = st.dvds.iterator();
153 while (it.hasNext()) {
154 Object o = it.next();
155 Element e = Convertors.write(doc, o);
156 element.appendChild(e);
157 }
158
159 return element;
160 }
161 if (inst instanceof DVD) {
162 DVD dvd = (DVD)inst;
163 Element element = doc.createElementNS(NAMESPACE, "dvd");
164
165 Element e = doc.createElementNS(NAMESPACE, "id");
166 Text t = doc.createTextNode(Integer.toString(dvd.ID));
167 e.appendChild(t);
168 element.appendChild(e);
169
170 e = doc.createElementNS(NAMESPACE, "title");
171 t = doc.createTextNode(dvd.title);
172 e.appendChild(t);
173 element.appendChild(e);
174
175 e = doc.createElementNS(NAMESPACE, "publisher");
176 t = doc.createTextNode(dvd.publisher);
177 e.appendChild(t);
178 element.appendChild(e);
179
180 e = doc.createElementNS(NAMESPACE, "price");
181 t = doc.createTextNode(Integer.toString(dvd.price));
182 e.appendChild(t);
183 element.appendChild(e);
184
185 return element;
186 }
187 if (inst instanceof Book) {
188 Book book = (Book)inst;
189 Element element = doc.createElementNS(NAMESPACE, "book");
190
191 Element e = doc.createElementNS(NAMESPACE, "id");
192 Text t = doc.createTextNode(Integer.toString(book.ID));
193 e.appendChild(t);
194 element.appendChild(e);
195
196 e = doc.createElementNS(NAMESPACE, "author");
197 t = doc.createTextNode(book.author);
198 e.appendChild(t);
199 element.appendChild(e);
200
201 e = doc.createElementNS(NAMESPACE, "title");
202 t = doc.createTextNode(book.title);
203 e.appendChild(t);
204 element.appendChild(e);
205
206 e = doc.createElementNS(NAMESPACE, "publisher");
207 t = doc.createTextNode(book.publisher);
208 e.appendChild(t);
209 element.appendChild(e);
210
211 e = doc.createElementNS(NAMESPACE, "price");
212 t = doc.createTextNode(Integer.toString(book.price));
213 e.appendChild(t);
214 element.appendChild(e);
215
216 return element;
217 }
218 throw new ConvertorException("This should never happen");
219 }
220
221 private String getTextValue(Element element) {
223 NodeList nodes = element.getChildNodes();
224 for (int i = 0; i < nodes.getLength(); i++) {
225 Node node = nodes.item(i);
226 if (node.getNodeType() == Node.TEXT_NODE) {
227 return ((Text )node).getData();
228 }
229 }
230 return null;
231 }
232
233 }
234 |
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