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16 package org.apache.cocoon.jxpath;
17
18 import org.apache.avalon.framework.component.Component;
19 import org.apache.avalon.framework.context.Contextualizable;
20 import org.apache.avalon.framework.thread.ThreadSafe;
21
22 import org.apache.cocoon.components.ContextHelper;
23 import org.apache.cocoon.environment.Context;
24 import org.apache.cocoon.environment.Cookie;
25 import org.apache.cocoon.environment.ObjectModelHelper;
26 import org.apache.cocoon.environment.Request;
27 import org.apache.cocoon.environment.Session;
28
29 import org.apache.commons.jxpath.JXPathContext;
30 import org.apache.commons.jxpath.JXPathContextFactory;
31 import org.apache.commons.jxpath.JXPathIntrospector;
32 import org.apache.commons.jxpath.servlet.Constants;
33 import org.apache.commons.jxpath.servlet.KeywordVariables;
34
35 import java.io.InputStream  ;
36 import java.net.MalformedURLException ;
37 import java.net.URL ;
38 import java.security.Principal ;
39 import java.util.Enumeration ;
40 import java.util.Locale ;
41 import java.util.Map ;
42
43
73 public final class JXPathCocoonContexts implements Component, Contextualizable, ThreadSafe {
74
75 public static final String ROLE = JXPathCocoonContexts.class.getName();
76
77 private static final String VARCONTEXT = Constants.JXPATH_CONTEXT + "/VAR";
78
79 private static JXPathContextFactory factory;
80 private org.apache.avalon.framework.context.Context context;
81
82 static {
83 factory = JXPathContextFactory.newInstance();
84 JXPathIntrospector.registerDynamicClass(RequestProxy.class, CocoonRequestHandler.class);
85 JXPathIntrospector.registerDynamicClass(SessionProxy.class, CocoonSessionHandler.class);
86 JXPathIntrospector.registerDynamicClass(ContextProxy.class, CocoonContextHandler.class);
87 }
88
89 public void contextualize(org.apache.avalon.framework.context.Context context) {
90 this.context = context;
91 }
92
93 public final JXPathContext getVariableContext() {
94 final Map objectModel = ContextHelper.getObjectModel(this.context);
95
96 Request request = ObjectModelHelper.getRequest(objectModel);
97 JXPathContext context = (JXPathContext) request.getAttribute(VARCONTEXT);
98 if (context == null) {
99 context = factory.newContext(getRequestContext(), null);
100 request.setAttribute(VARCONTEXT, context);
101 }
102 return context;
103 }
104
105
109 public final JXPathContext getRequestContext() {
110 final Map objectModel = ContextHelper.getObjectModel(this.context);
111
112 Request request = ObjectModelHelper.getRequest(objectModel);
113 JXPathContext context = (JXPathContext) request.getAttribute(Constants.JXPATH_CONTEXT);
114 if (context == null) {
115 Context envContext = ObjectModelHelper.getContext(objectModel);
116 JXPathContext parentContext = null;
117
118 Session session = request.getSession(false);
119 if (session != null) {
120 parentContext = getSessionContext(session, envContext);
121 } else {
122 parentContext = getApplicationContext(envContext);
123 }
124
125 request = new RequestProxy(request);
126 context = factory.newContext(parentContext, request);
127 context.setVariables(new KeywordVariables(Constants.REQUEST_SCOPE, request));
128 request.setAttribute(Constants.JXPATH_CONTEXT, context);
129 }
130 return context;
131 }
132
133
137 public final JXPathContext getSessionContext(Session session, Context envContext) {
138 JXPathContext context = (JXPathContext) session.getAttribute(Constants.JXPATH_CONTEXT);
139 if (context == null) {
140 JXPathContext parentContext = getApplicationContext(envContext);
141 session = new SessionProxy(session);
142 context = factory.newContext(parentContext, session);
143 context.setVariables(new KeywordVariables(Constants.SESSION_SCOPE, session));
144 session.setAttribute(Constants.JXPATH_CONTEXT, context);
145 }
146 return context;
147 }
148
149
153 public final JXPathContext getApplicationContext(Context envContext) {
154 JXPathContext context = (JXPathContext) envContext.getAttribute(Constants.JXPATH_CONTEXT);
155 if (context == null) {
156 envContext = new ContextProxy(envContext);
157 context = factory.newContext(null, envContext);
158 context.setVariables(new KeywordVariables(Constants.APPLICATION_SCOPE, envContext));
159 envContext.setAttribute(Constants.JXPATH_CONTEXT, context);
160 }
161 return context;
162 }
163
164 public static final class RequestProxy implements Request {
165 private Request delegate;
166
167 public RequestProxy (Request delegate) {
168 this.delegate = delegate;
169 }
170
171 public Object get(String name) {
172 return this.delegate.get(name);
173 }
174
175 public Object getAttribute(String name) {
176 return this.delegate.getAttribute(name);
177 }
178
179 public Enumeration getAttributeNames() {
180 return this.delegate.getAttributeNames();
181 }
182
183 public String getCharacterEncoding() {
184 return this.delegate.getCharacterEncoding();
185 }
186
187 public void setCharacterEncoding(String enc)
188 throws java.io.UnsupportedEncodingException {
189 this.delegate.setCharacterEncoding(enc);
190 }
191
192 public int getContentLength() {
193 return this.delegate.getContentLength();
194 }
195
196 public String getContentType() {
197 return this.delegate.getContentType();
198 }
199
200 public String getParameter(String name) {
201 return this.delegate.getParameter(name);
202 }
203
204 public Enumeration getParameterNames() {
205 return this.delegate.getParameterNames();
206 }
207
208 public String [] getParameterValues(String name) {
209 return this.delegate.getParameterValues(name);
210 }
211
212 public String getProtocol() {
213 return this.delegate.getProtocol();
214 }
215
216 public String getScheme() {
217 return this.delegate.getScheme();
218 }
219
220 public String getServerName() {
221 return this.delegate.getServerName();
222 }
223
224 public int getServerPort() {
225 return this.delegate.getServerPort();
226 }
227
228 public String getRemoteAddr() {
229 return this.delegate.getRemoteAddr();
230 }
231
232 public String getRemoteHost() {
233 return this.delegate.getRemoteHost();
234 }
235
236 public void setAttribute(String name, Object o) {
237 this.delegate.setAttribute(name, o);
238 }
239
240 public void removeAttribute(String name) {
241 this.delegate.removeAttribute(name);
242 }
243
244 public Locale getLocale() {
245 return this.delegate.getLocale();
246 }
247
248 public Enumeration getLocales() {
249 return this.delegate.getLocales();
250 }
251
252 public boolean isSecure() {
253 return this.delegate.isSecure();
254 }
255
256 public Cookie[] getCookies() {
257 return this.delegate.getCookies();
258 }
259
260 public Map getCookieMap() {
261 return this.delegate.getCookieMap();
262 }
263
264 public long getDateHeader(String name) {
265 return this.delegate.getDateHeader(name);
266 }
267
268 public String getHeader(String name) {
269 return this.delegate.getHeader(name);
270 }
271
272 public Enumeration getHeaders(String name) {
273 return this.delegate.getHeaders(name);
274 }
275
276 public Enumeration getHeaderNames() {
277 return this.delegate.getHeaderNames();
278 }
279
280 public String getMethod() {
281 return this.delegate.getMethod();
282 }
283
284 public String getPathInfo() {
285 return this.delegate.getPathInfo();
286 }
287
288 public String getPathTranslated() {
289 return this.delegate.getPathTranslated();
290 }
291
292 public String getContextPath() {
293 return this.delegate.getContextPath();
294 }
295
296 public String getQueryString() {
297 return this.delegate.getQueryString();
298 }
299
300 public String getRemoteUser() {
301 return this.delegate.getRemoteUser();
302 }
303
304 public String getRequestedSessionId() {
305 return this.delegate.getRequestedSessionId();
306 }
307
308 public String getRequestURI() {
309 return this.delegate.getRequestURI();
310 }
311
312 public String getSitemapURI() {
313 return this.delegate.getSitemapURI();
314 }
315
316 public String getSitemapURIPrefix() {
317 return this.delegate.getSitemapURIPrefix();
318 }
319
320 public String getServletPath() {
321 return this.delegate.getServletPath();
322 }
323
324 public Session getSession(boolean create) {
325 return this.delegate.getSession(create);
326 }
327
328 public Session getSession() {
329 return this.delegate.getSession();
330 }
331
332 public boolean isRequestedSessionIdValid() {
333 return this.delegate.isRequestedSessionIdValid();
334 }
335
336 public boolean isRequestedSessionIdFromCookie() {
337 return this.delegate.isRequestedSessionIdFromCookie();
338 }
339
340 public boolean isRequestedSessionIdFromURL() {
341 return this.delegate.isRequestedSessionIdFromURL();
342 }
343
344 public Principal getUserPrincipal() {
345 return this.delegate.getUserPrincipal();
346 }
347
348 public boolean isUserInRole(String role) {
349 return this.delegate.isUserInRole(role);
350 }
351
352 public String getAuthType() {
353 return this.delegate.getAuthType();
354 }
355 }
356
357 public class SessionProxy implements Session {
358 private Session delegate;
359
360 public SessionProxy(Session delegate) {
361 this.delegate = delegate;
362 }
363
364 public long getCreationTime() {
365 return this.delegate.getCreationTime();
366 }
367
368 public String getId() {
369 return this.delegate.getId();
370 }
371
372 public long getLastAccessedTime() {
373 return this.delegate.getLastAccessedTime();
374 }
375
376 public void setMaxInactiveInterval(int interval) {
377 this.delegate.setMaxInactiveInterval(interval);
378 }
379
380 public int getMaxInactiveInterval() {
381 return this.delegate.getMaxInactiveInterval();
382 }
383
384 public Object getAttribute(String name) {
385 return this.delegate.getAttribute(name);
386 }
387
388 public Enumeration getAttributeNames() {
389 return this.delegate.getAttributeNames();
390 }
391
392 public void setAttribute(String name, Object value) {
393 this.delegate.setAttribute(name, value);
394 }
395
396 public void removeAttribute(String name) {
397 this.delegate.removeAttribute(name);
398 }
399
400 public void invalidate() {
401 this.delegate.invalidate();
402 }
403
404 public boolean isNew() {
405 return this.delegate.isNew();
406 }
407 }
408
409 public class ContextProxy implements Context {
410 private Context delegate;
411
412 public ContextProxy(org.apache.cocoon.environment.Context delegate) {
413 this.delegate = delegate;
414 }
415
416 public Object getAttribute(String name) {
417 return this.delegate.getAttribute(name);
418 }
419
420 public void setAttribute(String name, Object value) {
421 this.delegate.setAttribute(name, value);
422 }
423
424 public void removeAttribute(String name) {
425 this.delegate.removeAttribute(name);
426 }
427
428 public Enumeration getAttributeNames() {
429 return this.delegate.getAttributeNames();
430 }
431
432 public URL getResource(String path) throws MalformedURLException {
433 return this.delegate.getResource(path);
434 }
435
436 public String getRealPath(String path) {
437 return this.delegate.getRealPath(path);
438 }
439
440 public String getMimeType(String file) {
441 return this.delegate.getMimeType(file);
442 }
443
444 public String getInitParameter(String name) {
445 return this.delegate.getInitParameter(name);
446 }
447
448 public InputStream getResourceAsStream(String path) {
449 return this.delegate.getResourceAsStream(path);
450 }
451 }
452 }
453 |
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