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16 package org.apache.cocoon.transformation;
17
18 import java.io.IOException  ;
19 import java.util.Map ;
20
21 import org.apache.avalon.framework.configuration.Configurable;
22 import org.apache.avalon.framework.configuration.Configuration;
23 import org.apache.avalon.framework.configuration.ConfigurationException;
24 import org.apache.avalon.framework.parameters.Parameters;
25 import org.apache.avalon.framework.service.ServiceException;
26 import org.apache.avalon.framework.service.ServiceManager;
27 import org.apache.avalon.framework.service.ServiceSelector;
28 import org.apache.avalon.framework.service.Serviceable;
29
30 import org.apache.avalon.excalibur.pool.Recyclable;
31
32 import org.apache.cocoon.ProcessingException;
33 import org.apache.cocoon.components.modules.output.OutputModule;
34 import org.apache.cocoon.environment.SourceResolver;
35 import org.apache.cocoon.xml.dom.DocumentWrapper;
36
37 import org.w3c.dom.Document ;
38 import org.xml.sax.Attributes ;
39 import org.xml.sax.SAXException ;
40
41
60 public class SimpleFormInstanceExtractionTransformer extends AbstractExtractionTransformer
61 implements Configurable, Serviceable, Recyclable {
62
63 protected static class ElementData {
64 public String uri = null;
65 public String loc = null;
66 public String raw = null;
67
68 public ElementData() {
69 }
70
71 public ElementData(String uri, String loc, String raw) {
72 this.uri = uri;
73 this.loc = loc;
74 this.raw =raw;
75 }
76
77 public boolean equals(String uri, String loc, String raw) {
78
79 if (!this.uri.equals(uri))
80 return false;
81 if (!this.loc.equals(loc))
82 return false;
83 if (!this.raw.equals(raw))
84 return false;
85 return true;
86 }
87
88 }
89
90 protected final static String OUTPUT_MODULE_SELECTOR = OutputModule.ROLE+"Selector";
91
92 ElementData startElement = null;
93 ElementData nameElement = null;
94 String qname = "name";
95
96 String instanceName = null;
97 boolean nameAsRoot = true;
98
99 String outputModuleName = "request-attr";
100 Configuration outputConf = null;
101
102 ServiceManager manager = null;
103 Map objectModel = null;
104
105 public void configure(Configuration config) throws ConfigurationException {
106 this.startElement = new ElementData();
107 this.startElement.uri = config.getChild("start").getAttribute("uri", "");
108 this.startElement.loc = config.getChild("start").getAttribute("local-name", "form-instance");
109 this.startElement.raw = config.getChild("start").getAttribute("raw-name", "form-instance");
110
111 this.nameElement = new ElementData();
112 this.nameElement.uri = config.getChild("name").getAttribute("uri", "");
113 this.nameElement.loc = config.getChild("name").getAttribute("local-name", "form");
114 this.nameElement.raw = config.getChild("name").getAttribute("raw-name", "form");
115 this.qname = config.getChild("name").getAttribute("name-attribute", "name");
116
117 this.nameAsRoot = config.getChild("name-as-root").getValueAsBoolean(this.nameAsRoot);
118
119 this.outputConf = config.getChild("output");
120 this.outputModuleName = this.outputConf.getAttribute("name",this.outputModuleName);
121 }
122
123 public void service(ServiceManager manager) throws ServiceException {
124 this.manager = manager;
125 }
126
127
128 public void setup(SourceResolver resolver, Map objectModel, String src, Parameters parameters)
129 throws ProcessingException, SAXException , IOException {
130 super.setup(resolver, objectModel, src, parameters);
131 this.objectModel = objectModel;
132 }
133
134 public void recycle() {
135 super.recycle();
136 this.instanceName = null;
137 }
138
139
153 public boolean startExtracting(String uri, String loc, String raw, Attributes a) {
154 if (this.nameElement.equals(uri,loc,raw)) {
155 this.instanceName = a.getValue(this.qname);
156 }
157 boolean res = this.startElement.equals(uri,loc,raw);
158 return res;
159 }
160
161
172 public boolean endExtracting(String uri, String loc, String raw) {
173 boolean res = this.startElement.equals(uri,loc,raw);
174 return res;
175 }
176
177
178
182 public void startExtractingDocument(String uri, String loc, String raw, Attributes a) throws SAXException {
183 if (this.nameAsRoot) {
184 loc = this.instanceName;
185 if (uri != null && !uri.equals("")) {
186 int pos = raw.indexOf(':');
187 raw = raw.substring(0, pos+1) + this.instanceName;
188 } else {
189 raw = loc;
190 }
191 }
192 this.currentBuilder.startElement(uri,loc,raw,a);
193 }
194
195
199 public void endExtractingDocument(String uri, String loc, String raw) throws SAXException {
200 if(this.nameAsRoot){
201 loc = this.instanceName;
202 if (uri != null && !uri.equals("")) {
203 int pos = raw.indexOf(':');
204 raw = raw.substring(0, pos+1) + this.instanceName;
205 } else {
206 raw = loc;
207 }
208 }
209 this.currentBuilder.endElement(uri, loc, raw);
210 }
211
212
213
218 public void handleExtractedDocument(Document doc) {
219
220 ServiceSelector outputSelector = null;
221 OutputModule output = null;
222
223 try {
224 if (getLogger().isDebugEnabled())
225 getLogger().debug("wrote ['"+this.instanceName+"'] to "+output+" using "+outputConf);
226 outputSelector = (ServiceSelector) this.manager.lookup(OUTPUT_MODULE_SELECTOR);
227 if (outputSelector.isSelectable(this.outputModuleName)) {
228 output = (OutputModule) outputSelector.select(this.outputModuleName);
229 }
230 output.setAttribute(outputConf, this.objectModel, this.instanceName, new DocumentWrapper(doc));
231 output.commit(outputConf, this.objectModel);
232 if (getLogger().isDebugEnabled())
233 getLogger().debug("wrote ['"+this.instanceName+"'] to "+output+" using "+outputConf);
234
235 } catch (Exception e) {
236 if (getLogger().isWarnEnabled())
237 getLogger().warn("Problem writing document data: "+e.getMessage());
238 } finally {
239 if (outputSelector != null) {
240 if (output != null) {
241 outputSelector.release(output);
242 output = null;
243 }
244 this.manager.release(outputSelector);
245 }
246 }
247 this.instanceName = null;
248 }
249
250 }
251 |
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