1 |
| |
2 |
| |
3 |
| |
4 |
| |
5 |
| |
6 |
| |
7 |
| |
8 |
| |
9 |
| |
10 |
| |
11 |
| |
12 |
| |
13 |
| |
14 |
| |
15 |
| package org.apache.tapestry.services.impl; |
16 |
| |
17 |
| import java.io.BufferedInputStream; |
18 |
| import java.io.IOException; |
19 |
| import java.io.InputStream; |
20 |
| import java.io.InputStreamReader; |
21 |
| import java.net.URL; |
22 |
| import java.util.Collections; |
23 |
| import java.util.HashMap; |
24 |
| import java.util.Locale; |
25 |
| import java.util.Map; |
26 |
| |
27 |
| import org.apache.commons.logging.Log; |
28 |
| import org.apache.hivemind.ApplicationRuntimeException; |
29 |
| import org.apache.hivemind.Resource; |
30 |
| import org.apache.tapestry.IAsset; |
31 |
| import org.apache.tapestry.IComponent; |
32 |
| import org.apache.tapestry.IPage; |
33 |
| import org.apache.tapestry.IRequestCycle; |
34 |
| import org.apache.tapestry.Tapestry; |
35 |
| import org.apache.tapestry.engine.ITemplateSourceDelegate; |
36 |
| import org.apache.tapestry.event.ResetEventListener; |
37 |
| import org.apache.tapestry.parse.ComponentTemplate; |
38 |
| import org.apache.tapestry.parse.ITemplateParser; |
39 |
| import org.apache.tapestry.parse.ITemplateParserDelegate; |
40 |
| import org.apache.tapestry.parse.TemplateParseException; |
41 |
| import org.apache.tapestry.parse.TemplateToken; |
42 |
| import org.apache.tapestry.resolver.ComponentSpecificationResolver; |
43 |
| import org.apache.tapestry.services.ComponentPropertySource; |
44 |
| import org.apache.tapestry.services.TemplateSource; |
45 |
| import org.apache.tapestry.spec.IComponentSpecification; |
46 |
| import org.apache.tapestry.util.MultiKey; |
47 |
| |
48 |
| |
49 |
| |
50 |
| |
51 |
| |
52 |
| |
53 |
| |
54 |
| |
55 |
| public class TemplateSourceImpl implements TemplateSource, ResetEventListener |
56 |
| { |
57 |
| private Log _log; |
58 |
| |
59 |
| |
60 |
| |
61 |
| |
62 |
| public static final String TEMPLATE_ENCODING_PROPERTY_NAME = "org.apache.tapestry.template-encoding"; |
63 |
| |
64 |
| |
65 |
| |
66 |
| |
67 |
| |
68 |
| private Map _cache = Collections.synchronizedMap(new HashMap()); |
69 |
| |
70 |
| |
71 |
| |
72 |
| |
73 |
| private Map _templates = Collections.synchronizedMap(new HashMap()); |
74 |
| |
75 |
| private static final int BUFFER_SIZE = 2000; |
76 |
| |
77 |
| private ITemplateParser _parser; |
78 |
| |
79 |
| |
80 |
| |
81 |
| private Resource _contextRoot; |
82 |
| |
83 |
| |
84 |
| |
85 |
| private ITemplateSourceDelegate _delegate; |
86 |
| |
87 |
| |
88 |
| |
89 |
| private ComponentSpecificationResolver _componentSpecificationResolver; |
90 |
| |
91 |
| |
92 |
| |
93 |
| private ComponentPropertySource _componentPropertySource; |
94 |
| |
95 |
| |
96 |
| |
97 |
| |
98 |
| |
99 |
0
| public void resetEventDidOccur()
|
100 |
| { |
101 |
0
| _cache.clear();
|
102 |
0
| _templates.clear();
|
103 |
| } |
104 |
| |
105 |
| |
106 |
| |
107 |
| |
108 |
| |
109 |
196
| public ComponentTemplate getTemplate(IRequestCycle cycle, IComponent component)
|
110 |
| { |
111 |
196
| IComponentSpecification specification = component.getSpecification();
|
112 |
196
| Resource resource = specification.getSpecificationLocation();
|
113 |
| |
114 |
196
| Locale locale = component.getPage().getLocale();
|
115 |
| |
116 |
196
| Object key = new MultiKey(new Object[]
|
117 |
| { resource, locale }, false); |
118 |
| |
119 |
196
| ComponentTemplate result = searchCache(key);
|
120 |
196
| if (result != null)
|
121 |
32
| return result;
|
122 |
| |
123 |
164
| result = findTemplate(cycle, resource, component, locale);
|
124 |
| |
125 |
164
| if (result == null)
|
126 |
| { |
127 |
0
| result = _delegate.findTemplate(cycle, component, locale);
|
128 |
| |
129 |
0
| if (result != null)
|
130 |
0
| return result;
|
131 |
| |
132 |
0
| String message = component.getSpecification().isPageSpecification() ? ImplMessages
|
133 |
| .noTemplateForPage(component.getExtendedId(), locale) : ImplMessages |
134 |
| .noTemplateForComponent(component.getExtendedId(), locale); |
135 |
| |
136 |
0
| throw new ApplicationRuntimeException(message, component, component.getLocation(), null);
|
137 |
| } |
138 |
| |
139 |
164
| saveToCache(key, result);
|
140 |
| |
141 |
164
| return result;
|
142 |
| } |
143 |
| |
144 |
196
| private ComponentTemplate searchCache(Object key)
|
145 |
| { |
146 |
196
| return (ComponentTemplate) _cache.get(key);
|
147 |
| } |
148 |
| |
149 |
164
| private void saveToCache(Object key, ComponentTemplate template)
|
150 |
| { |
151 |
164
| _cache.put(key, template);
|
152 |
| |
153 |
| } |
154 |
| |
155 |
| |
156 |
| |
157 |
| |
158 |
| |
159 |
| |
160 |
| |
161 |
| |
162 |
| |
163 |
| |
164 |
| |
165 |
| |
166 |
| |
167 |
164
| private ComponentTemplate findTemplate(IRequestCycle cycle, Resource resource,
|
168 |
| IComponent component, Locale locale) |
169 |
| { |
170 |
164
| IAsset templateAsset = component.getAsset(TEMPLATE_ASSET_NAME);
|
171 |
| |
172 |
164
| if (templateAsset != null)
|
173 |
2
| return readTemplateFromAsset(cycle, component, templateAsset);
|
174 |
| |
175 |
162
| String name = resource.getName();
|
176 |
162
| int dotx = name.lastIndexOf('.');
|
177 |
162
| String templateExtension = getTemplateExtension(component);
|
178 |
162
| String templateBaseName = name.substring(0, dotx + 1) + templateExtension;
|
179 |
| |
180 |
162
| ComponentTemplate result = findStandardTemplate(
|
181 |
| cycle, |
182 |
| resource, |
183 |
| component, |
184 |
| templateBaseName, |
185 |
| locale); |
186 |
| |
187 |
162
| if (result == null && component.getSpecification().isPageSpecification()
|
188 |
| && component.getNamespace().isApplicationNamespace()) |
189 |
57
| result = findPageTemplateInApplicationRoot(
|
190 |
| cycle, |
191 |
| (IPage) component, |
192 |
| templateExtension, |
193 |
| locale); |
194 |
| |
195 |
162
| return result;
|
196 |
| } |
197 |
| |
198 |
57
| private ComponentTemplate findPageTemplateInApplicationRoot(IRequestCycle cycle, IPage page,
|
199 |
| String templateExtension, Locale locale) |
200 |
| { |
201 |
| |
202 |
| |
203 |
| |
204 |
| |
205 |
| |
206 |
| |
207 |
| |
208 |
| |
209 |
57
| String templateBaseName = page.getPageName() + "." + templateExtension;
|
210 |
| |
211 |
57
| if (_log.isDebugEnabled())
|
212 |
0
| _log.debug("Checking for " + templateBaseName + " in application root");
|
213 |
| |
214 |
57
| Resource baseLocation = _contextRoot.getRelativeResource(templateBaseName);
|
215 |
57
| Resource localizedLocation = baseLocation.getLocalization(locale);
|
216 |
| |
217 |
57
| if (localizedLocation == null)
|
218 |
0
| return null;
|
219 |
| |
220 |
57
| return getOrParseTemplate(cycle, localizedLocation, page);
|
221 |
| } |
222 |
| |
223 |
| |
224 |
| |
225 |
| |
226 |
| |
227 |
2
| private ComponentTemplate readTemplateFromAsset(IRequestCycle cycle, IComponent component,
|
228 |
| IAsset asset) |
229 |
| { |
230 |
2
| InputStream stream = asset.getResourceAsStream(cycle);
|
231 |
| |
232 |
2
| char[] templateData = null;
|
233 |
| |
234 |
2
| try
|
235 |
| { |
236 |
2
| String encoding = getTemplateEncoding(component, null);
|
237 |
| |
238 |
2
| templateData = readTemplateStream(stream, encoding);
|
239 |
| |
240 |
2
| stream.close();
|
241 |
| } |
242 |
| catch (IOException ex) |
243 |
| { |
244 |
0
| throw new ApplicationRuntimeException(ImplMessages.unableToReadTemplate(asset), ex);
|
245 |
| } |
246 |
| |
247 |
2
| Resource resourceLocation = asset.getResourceLocation();
|
248 |
| |
249 |
2
| return constructTemplateInstance(cycle, templateData, resourceLocation, component);
|
250 |
| } |
251 |
| |
252 |
| |
253 |
| |
254 |
| |
255 |
| |
256 |
| |
257 |
| |
258 |
| |
259 |
162
| private ComponentTemplate findStandardTemplate(IRequestCycle cycle, Resource resource,
|
260 |
| IComponent component, String templateBaseName, Locale locale) |
261 |
| { |
262 |
162
| if (_log.isDebugEnabled())
|
263 |
0
| _log.debug("Searching for localized version of template for " + resource
|
264 |
| + " in locale " + locale.getDisplayName()); |
265 |
| |
266 |
162
| Resource baseTemplateLocation = resource.getRelativeResource(templateBaseName);
|
267 |
| |
268 |
162
| Resource localizedTemplateLocation = baseTemplateLocation.getLocalization(locale);
|
269 |
| |
270 |
162
| if (localizedTemplateLocation == null)
|
271 |
57
| return null;
|
272 |
| |
273 |
105
| return getOrParseTemplate(cycle, localizedTemplateLocation, component);
|
274 |
| |
275 |
| } |
276 |
| |
277 |
| |
278 |
| |
279 |
| |
280 |
| |
281 |
| |
282 |
| |
283 |
162
| private ComponentTemplate getOrParseTemplate(IRequestCycle cycle, Resource resource,
|
284 |
| IComponent component) |
285 |
| { |
286 |
| |
287 |
162
| ComponentTemplate result = (ComponentTemplate) _templates.get(resource);
|
288 |
162
| if (result != null)
|
289 |
17
| return result;
|
290 |
| |
291 |
| |
292 |
| |
293 |
145
| result = parseTemplate(cycle, resource, component);
|
294 |
| |
295 |
145
| if (result != null)
|
296 |
145
| _templates.put(resource, result);
|
297 |
| |
298 |
145
| return result;
|
299 |
| } |
300 |
| |
301 |
| |
302 |
| |
303 |
| |
304 |
| |
305 |
| |
306 |
| |
307 |
145
| private ComponentTemplate parseTemplate(IRequestCycle cycle, Resource resource,
|
308 |
| IComponent component) |
309 |
| { |
310 |
145
| String encoding = getTemplateEncoding(component, resource.getLocale());
|
311 |
| |
312 |
145
| char[] templateData = readTemplate(resource, encoding);
|
313 |
145
| if (templateData == null)
|
314 |
0
| return null;
|
315 |
| |
316 |
145
| return constructTemplateInstance(cycle, templateData, resource, component);
|
317 |
| } |
318 |
| |
319 |
| |
320 |
| |
321 |
| |
322 |
| |
323 |
| |
324 |
| |
325 |
147
| private synchronized ComponentTemplate constructTemplateInstance(IRequestCycle cycle,
|
326 |
| char[] templateData, Resource resource, IComponent component) |
327 |
| { |
328 |
147
| String componentAttributeName = _componentPropertySource.getComponentProperty(
|
329 |
| component, |
330 |
| "org.apache.tapestry.jwcid-attribute-name"); |
331 |
| |
332 |
147
| ITemplateParserDelegate delegate = new DefaultParserDelegate(component,
|
333 |
| componentAttributeName, cycle, _componentSpecificationResolver); |
334 |
| |
335 |
147
| TemplateToken[] tokens;
|
336 |
| |
337 |
147
| try
|
338 |
| { |
339 |
147
| tokens = _parser.parse(templateData, delegate, resource);
|
340 |
| } |
341 |
| catch (TemplateParseException ex) |
342 |
| { |
343 |
0
| throw new ApplicationRuntimeException(ImplMessages.unableToParseTemplate(resource), ex);
|
344 |
| } |
345 |
| |
346 |
147
| if (_log.isDebugEnabled())
|
347 |
0
| _log.debug("Parsed " + tokens.length + " tokens from template");
|
348 |
| |
349 |
147
| return new ComponentTemplate(templateData, tokens);
|
350 |
| } |
351 |
| |
352 |
| |
353 |
| |
354 |
| |
355 |
| |
356 |
| |
357 |
145
| private char[] readTemplate(Resource resource, String encoding)
|
358 |
| { |
359 |
145
| if (_log.isDebugEnabled())
|
360 |
0
| _log.debug("Reading template " + resource);
|
361 |
| |
362 |
145
| URL url = resource.getResourceURL();
|
363 |
| |
364 |
145
| if (url == null)
|
365 |
| { |
366 |
0
| if (_log.isDebugEnabled())
|
367 |
0
| _log.debug("Template does not exist.");
|
368 |
| |
369 |
0
| return null;
|
370 |
| } |
371 |
| |
372 |
145
| if (_log.isDebugEnabled())
|
373 |
0
| _log.debug("Reading template from URL " + url);
|
374 |
| |
375 |
145
| InputStream stream = null;
|
376 |
| |
377 |
145
| try
|
378 |
| { |
379 |
145
| stream = url.openStream();
|
380 |
| |
381 |
145
| return readTemplateStream(stream, encoding);
|
382 |
| } |
383 |
| catch (IOException ex) |
384 |
| { |
385 |
0
| throw new ApplicationRuntimeException(ImplMessages.unableToReadTemplate(resource), ex);
|
386 |
| } |
387 |
| finally |
388 |
| { |
389 |
145
| Tapestry.close(stream);
|
390 |
| } |
391 |
| |
392 |
| } |
393 |
| |
394 |
| |
395 |
| |
396 |
| |
397 |
| |
398 |
147
| private char[] readTemplateStream(InputStream stream, String encoding) throws IOException
|
399 |
| { |
400 |
147
| char[] charBuffer = new char[BUFFER_SIZE];
|
401 |
147
| StringBuffer buffer = new StringBuffer();
|
402 |
| |
403 |
147
| InputStreamReader reader;
|
404 |
147
| if (encoding != null)
|
405 |
6
| reader = new InputStreamReader(new BufferedInputStream(stream), encoding);
|
406 |
| else |
407 |
141
| reader = new InputStreamReader(new BufferedInputStream(stream));
|
408 |
| |
409 |
147
| try
|
410 |
| { |
411 |
147
| while (true)
|
412 |
| { |
413 |
299
| int charsRead = reader.read(charBuffer, 0, BUFFER_SIZE);
|
414 |
| |
415 |
299
| if (charsRead <= 0)
|
416 |
147
| break;
|
417 |
| |
418 |
152
| buffer.append(charBuffer, 0, charsRead);
|
419 |
| } |
420 |
| } |
421 |
| finally |
422 |
| { |
423 |
147
| reader.close();
|
424 |
| } |
425 |
| |
426 |
| |
427 |
| |
428 |
| |
429 |
147
| int length = buffer.length();
|
430 |
| |
431 |
147
| charBuffer = new char[length];
|
432 |
| |
433 |
| |
434 |
| |
435 |
| |
436 |
147
| buffer.getChars(0, length, charBuffer, 0);
|
437 |
| |
438 |
147
| return charBuffer;
|
439 |
| } |
440 |
| |
441 |
| |
442 |
| |
443 |
| |
444 |
| |
445 |
| |
446 |
| |
447 |
162
| private String getTemplateExtension(IComponent component)
|
448 |
| { |
449 |
162
| return _componentPropertySource.getComponentProperty(
|
450 |
| component, |
451 |
| Tapestry.TEMPLATE_EXTENSION_PROPERTY); |
452 |
| } |
453 |
| |
454 |
147
| private String getTemplateEncoding(IComponent component, Locale locale)
|
455 |
| { |
456 |
147
| return _componentPropertySource.getLocalizedComponentProperty(
|
457 |
| component, |
458 |
| locale, |
459 |
| TEMPLATE_ENCODING_PROPERTY_NAME); |
460 |
| } |
461 |
| |
462 |
| |
463 |
| |
464 |
39
| public void setParser(ITemplateParser parser)
|
465 |
| { |
466 |
39
| _parser = parser;
|
467 |
| } |
468 |
| |
469 |
| |
470 |
| |
471 |
39
| public void setLog(Log log)
|
472 |
| { |
473 |
39
| _log = log;
|
474 |
| } |
475 |
| |
476 |
| |
477 |
| |
478 |
39
| public void setDelegate(ITemplateSourceDelegate delegate)
|
479 |
| { |
480 |
39
| _delegate = delegate;
|
481 |
| } |
482 |
| |
483 |
| |
484 |
| |
485 |
39
| public void setComponentSpecificationResolver(ComponentSpecificationResolver resolver)
|
486 |
| { |
487 |
39
| _componentSpecificationResolver = resolver;
|
488 |
| } |
489 |
| |
490 |
| |
491 |
39
| public void setContextRoot(Resource contextRoot)
|
492 |
| { |
493 |
39
| _contextRoot = contextRoot;
|
494 |
| } |
495 |
| |
496 |
| |
497 |
39
| public void setComponentPropertySource(ComponentPropertySource componentPropertySource)
|
498 |
| { |
499 |
39
| _componentPropertySource = componentPropertySource;
|
500 |
| } |
501 |
| } |