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1
17
18
19
20 package org.apache.lenya.cms.cocoon.transformation;
21
22 import java.io.File  ;
23 import java.io.IOException ;
24 import java.util.ArrayList ;
25 import java.util.List ;
26 import java.util.Map ;
27
28 import org.apache.avalon.framework.parameters.ParameterException;
29 import org.apache.avalon.framework.parameters.Parameterizable;
30 import org.apache.avalon.framework.parameters.Parameters;
31 import org.apache.cocoon.ProcessingException;
32 import org.apache.cocoon.environment.SourceResolver;
33 import org.apache.cocoon.transformation.AbstractSAXTransformer;
34 import org.apache.lenya.cms.publication.Document;
35 import org.apache.lenya.cms.publication.DocumentBuildException;
36 import org.apache.lenya.cms.publication.DocumentBuilder;
37 import org.apache.lenya.cms.publication.DocumentException;
38 import org.apache.lenya.cms.publication.PageEnvelope;
39 import org.apache.lenya.cms.publication.PageEnvelopeFactory;
40 import org.apache.lenya.cms.publication.Publication;
41 import org.apache.lenya.cms.publication.SiteTree;
42 import org.apache.lenya.cms.publication.SiteTreeNode;
43 import org.xml.sax.Attributes ;
44 import org.xml.sax.SAXException ;
45 import org.xml.sax.helpers.AttributesImpl ;
46
47
60 public class DocumentIndexTransformer extends AbstractSAXTransformer implements Parameterizable {
61
62 private String namespace;
63 private String cIncludeNamespace;
64
65 public static final String CHILDREN_ELEMENT = "children";
66 public static final String ABSTRACT_ATTRIBUTE = "abstract";
67
68 public static final String NAMESPACE = "http://apache.org/cocoon/lenya/documentindex/1.0";
69 public static final String PREFIX = "index:";
70
71
74 public void parameterize(Parameters parameters) throws ParameterException {
75 this.namespace = parameters.getParameter("namespace", null);
76 this.cIncludeNamespace = parameters.getParameter("cIncludeNamespace", null);
77 }
78
79 private Document document;
80
81 private Publication publication;
82
83 private String area;
84
85 private DocumentBuilder builder;
86
87 private SiteTree siteTree;
88
89
92 public void setup(SourceResolver resolver, Map objectModel, String src, Parameters parameters)
93 throws ProcessingException, SAXException , IOException {
94 try {
95
96 super.setup(resolver, objectModel, src, parameters);
97
98 parameterize(parameters);
99
100 PageEnvelope envelope = null;
101 envelope = PageEnvelopeFactory.getInstance().getPageEnvelope(objectModel);
102
103 setDocument(envelope.getDocument());
104 setPublication(document.getPublication());
105 setArea(document.getArea());
106 setBuilder(document.getPublication().getDocumentBuilder());
107 setSiteTree(publication.getTree(area));
108
109 } catch (Exception e) {
110 throw new ProcessingException(e);
111 }
112
113 }
114
115
118 public void startElement(String uri, String localName, String raw, Attributes attr)
119 throws SAXException {
120
121 if (uri != null
122 && uri.equals(namespace)
123 && cIncludeNamespace != null
124 && localName.equals(CHILDREN_ELEMENT)) {
125
126 if (getLogger().isInfoEnabled()) {
127 getLogger().info("Inserting index");
128 }
129
130 String cIncludePrefix = "";
131 if (!this.cIncludeNamespace.equals("")) {
132 cIncludePrefix = "ci:";
133 }
134
135 String documentId = document.getId();
136 String language = document.getLanguage();
137 String defaultLanguage = publication.getDefaultLanguage();
138 SiteTreeNode[] children = siteTree.getNode(documentId).getChildren();
139
140 super.startElement(uri, localName, raw, attr);
141
142 for (int i = 0; i < children.length; i++) {
143 String childId = documentId + "/" + children[i].getId();
144
145 String url = builder.buildCanonicalUrl(publication, area, childId, language);
147 Document doc;
148 try {
149 doc = builder.buildDocument(publication, url);
150 } catch (DocumentBuildException e) {
151 throw new SAXException (e);
152 }
153 File file = doc.getFile();
154
155 if (!file.exists()) {
156 getLogger().debug(
158 "There is no child file "
159 + file.getAbsolutePath()
160 + " in the same language as the parent document ["
161 + language
162 + "]");
163
164 String [] availableLanguages = null;
166 try {
167 availableLanguages = doc.getLanguages();
168 } catch (DocumentException e) {
169 throw new SAXException (e);
170 }
171
172 List languages = new ArrayList ();
173 for (int l = 0; l < availableLanguages.length; l++) {
174 if (availableLanguages[l].equals(language)) {
175 getLogger().debug(
176 "Do nothing because language was already tested: ["
177 + availableLanguages[l]
178 + "]");
179 } else if (availableLanguages[l].equals(defaultLanguage)) {
180 languages.add(0, availableLanguages[l]);
181 } else {
182 languages.add(availableLanguages[l]);
183 }
184 }
185
186 int j = 0;
187 while (!file.exists() && j < languages.size()) {
188 String newlanguage = (String ) languages.get(j);
189 url = builder.buildCanonicalUrl(publication, area, childId, newlanguage);
190 try {
191 doc = builder.buildDocument(publication, url);
192 } catch (DocumentBuildException e) {
193 throw new SAXException (e);
194 }
195 file = doc.getFile();
196
197 j++;
198 }
199 }
200
201 if (file.exists()) {
202 String path;
204 try {
205 path = file.getCanonicalPath();
206 } catch (IOException e) {
207 throw new SAXException (e);
208 }
209
210 AttributesImpl attribute = new AttributesImpl ();
211 attribute.addAttribute("", "href", "href", "", url);
212 super.startElement(NAMESPACE, "child", PREFIX + "child", attribute);
213
214 AttributesImpl attributes = new AttributesImpl ();
215 attributes.addAttribute("", "src", "src", "", path);
216 attributes.addAttribute("", "element", "element", "", "included");
217
218 super.startElement(
219 this.cIncludeNamespace,
220 "include",
221 cIncludePrefix + "include",
222 attributes);
223 super.endElement(this.cIncludeNamespace, "include", cIncludePrefix + "include");
224 super.endElement(NAMESPACE, "child", PREFIX + "child");
225 } else {
226 getLogger().warn("There are no existing file for the child with id " + childId);
228 }
229
230 }
231 } else {
232 super.startElement(uri, localName, raw, attr);
233 }
234
235 }
236
237
240 public SiteTree getSiteTree() {
241 return siteTree;
242 }
243
244
247 public void setSiteTree(SiteTree tree) {
248 siteTree = tree;
249 }
250
251
254 public void setArea(String string) {
255 area = string;
256 }
257
258
261 public void setBuilder(DocumentBuilder builder) {
262 this.builder = builder;
263 }
264
265
268 public void setDocument(Document document) {
269 this.document = document;
270 }
271
272
275 public void setPublication(Publication publication) {
276 this.publication = publication;
277 }
278
279 }
280 |
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