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1
17
18
19
20 package org.apache.lenya.cms.cocoon.generation;
21
22 import java.io.IOException  ;
23 import java.io.Serializable ;
24 import java.util.Map ;
25
26 import org.apache.avalon.framework.parameters.ParameterException;
27 import org.apache.avalon.framework.parameters.Parameterizable;
28 import org.apache.avalon.framework.parameters.Parameters;
29 import org.apache.cocoon.ProcessingException;
30 import org.apache.cocoon.caching.CacheableProcessingComponent;
31 import org.apache.cocoon.environment.SourceResolver;
32 import org.apache.cocoon.generation.ServiceableGenerator;
33 import org.apache.excalibur.source.SourceValidity;
34 import org.apache.excalibur.source.impl.validity.TimeStampValidity;
35 import org.apache.lenya.cms.publication.Label;
36 import org.apache.lenya.cms.publication.LastModified;
37 import org.apache.lenya.cms.publication.Publication;
38 import org.apache.lenya.cms.publication.PublicationException;
39 import org.apache.lenya.cms.publication.PublicationFactory;
40 import org.apache.lenya.cms.publication.SiteTree;
41 import org.apache.lenya.cms.publication.SiteTreeException;
42 import org.apache.lenya.cms.publication.SiteTreeNode;
43 import org.apache.log4j.Logger;
44 import org.xml.sax.SAXException ;
45 import org.xml.sax.helpers.AttributesImpl ;
46 import org.xml.sax.helpers.NamespaceSupport ;
47
48
53 public class SiteTreeGenerator extends ServiceableGenerator implements Parameterizable,
54 CacheableProcessingComponent {
55 private static Logger log = Logger.getLogger(SiteTreeGenerator.class);
56
57 protected final static String I18N_PX = "i18n";
58 protected final static String I18N_NS = "http://apache.org/cocoon/i18n/2.1";
59
60 protected final static String CDATA = "CDATA";
61
62 protected final static String SITE_ELEMENT = "site";
63 protected final static String NODE_ELEMENT = "node";
64 protected final static String LABEL_ELEMENT = "label";
65
66 protected final static String LABEL_ATTRIBUTE = "label";
67 protected final static String ATTR_ATTRIBUTE = "attr";
68 protected final static String Q_ATTR_ATTRIBUTE = I18N_PX + ":" + ATTR_ATTRIBUTE;
69 protected final static String ID_ATTRIBUTE = "id";
70 protected final static String LANG_ATTRIBUTE = "lang";
71 protected final static String HREF_ATTRIBUTE = "href";
72 protected final static String LINK_ATTRIBUTE = "link";
73 protected final static String VISIBLEINNAV_ATTRIBUTE = "visibleinnav";
74 protected final static String SUFFIX_ATTRIBUTE = "suffix";
75
76 protected final static String Q_LANG_ATTRIBUTE = "xml:lang";
77
78
81 public final static String AREA_PARAMETER = "area";
82
83 private final AttributesImpl atts = new AttributesImpl ();
84
85 SiteTree sitetree = null;
86 String area = null;
87
88
92 public void parameterize(Parameters parameters) throws ParameterException {
93 }
94
95
99 public void setup(SourceResolver resolver, Map objectModel, String src, Parameters par)
100 throws ProcessingException, SAXException , IOException {
101 log.debug("setup");
102 try {
103 Publication publication = PublicationFactory.getPublication(objectModel);
104 area = par.getParameter(AREA_PARAMETER);
105 sitetree = publication.getTree(area);
106 } catch (PublicationException e) {
107 throw new ProcessingException("Unable to get sitetree: publication exception.", e);
108 } catch (ParameterException e) {
109 throw new ProcessingException("Unable to get sitetree: parameter 'area' not found.", e);
110 } catch (SiteTreeException e) {
111 throw new ProcessingException("Unable to get sitetree.", e);
112 }
113 }
114
115
118 public void generate() throws SAXException {
119 log.debug("generate");
120 this.contentHandler.startDocument();
122 this.contentHandler.startPrefixMapping("", SiteTree.NAMESPACE_URI);
124 this.contentHandler.startPrefixMapping(I18N_PX, I18N_NS);
125
126 generateSiteTree(sitetree);
127
128 this.contentHandler.endPrefixMapping("");
130 this.contentHandler.endDocument();
131 }
132
133 private void generateSiteTree(SiteTree tree) throws SAXException {
134 atts.clear();
135 atts.addAttribute("", LABEL_ATTRIBUTE, LABEL_ATTRIBUTE, CDATA, "Authoring");
137 atts.addAttribute(I18N_NS, ATTR_ATTRIBUTE, Q_ATTR_ATTRIBUTE, CDATA, "label");
138
139 this.contentHandler.startElement(SiteTree.NAMESPACE_URI, SITE_ELEMENT, SITE_ELEMENT, atts);
140
141 SiteTreeNode[] topNodes = tree.getTopNodes();
142 for (int i = 0; i < topNodes.length; i++) {
143 generateNodes(topNodes[i]);
144 }
145
146 this.contentHandler.endElement(SiteTree.NAMESPACE_URI, SITE_ELEMENT, SITE_ELEMENT);
147 }
148
149 private void generateNodes(SiteTreeNode node) throws SAXException {
150 atts.clear();
151 atts.addAttribute("", ID_ATTRIBUTE, ID_ATTRIBUTE, CDATA, node.getId());
152 if (node.getHref() != null)
153 atts.addAttribute("", HREF_ATTRIBUTE, HREF_ATTRIBUTE, CDATA, node.getHref());
154 if (node.getSuffix() != null)
155 atts.addAttribute("", SUFFIX_ATTRIBUTE, SUFFIX_ATTRIBUTE, CDATA, node.getSuffix());
156 atts.addAttribute("", LINK_ATTRIBUTE, LINK_ATTRIBUTE, CDATA, Boolean.toString(node
157 .hasLink()));
158 atts.addAttribute("", VISIBLEINNAV_ATTRIBUTE, VISIBLEINNAV_ATTRIBUTE, CDATA, Boolean
159 .toString(node.visibleInNav()));
160
161 this.contentHandler.startElement(SiteTree.NAMESPACE_URI, NODE_ELEMENT, NODE_ELEMENT, atts);
162
163 Label[] labels = node.getLabels();
164 for (int i = 0; i < labels.length; i++)
165 generateLabels(labels[i]);
166 SiteTreeNode[] children = node.getChildren();
167 for (int i = 0; i < children.length; i++)
168 generateNodes(children[i]);
169
170 this.contentHandler.endElement(SiteTree.NAMESPACE_URI, NODE_ELEMENT, NODE_ELEMENT);
171 }
172
173 private void generateLabels(Label label) throws SAXException {
174 atts.clear();
175 atts.addAttribute(NamespaceSupport.XMLNS, LANG_ATTRIBUTE, Q_LANG_ATTRIBUTE, CDATA, label
176 .getLanguage());
177
178 this.contentHandler
179 .startElement(SiteTree.NAMESPACE_URI, LABEL_ELEMENT, LABEL_ELEMENT, atts);
180 char[] labelA = label.getLabel().toCharArray();
181 this.contentHandler.characters(labelA, 0, labelA.length);
182 this.contentHandler.endElement(SiteTree.NAMESPACE_URI, LABEL_ELEMENT, LABEL_ELEMENT);
183 }
184
185
188 public void recycle() {
189 log.debug("recycle");
190 super.recycle();
191 sitetree = null;
192 area = null;
193 }
194
195
198 public Serializable getKey() {
199 return area;
200 }
201
202
205 public SourceValidity getValidity() {
206 if (!(sitetree instanceof LastModified)) {
208 return null;
209 } else {
210 return new TimeStampValidity(((LastModified) sitetree).getLastModified());
211 }
212 }
213 } |
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