1 | package eu.clarin.cmdi.mdservice.action; |
---|
2 | |
---|
3 | import java.io.IOException; |
---|
4 | import java.io.InputStream; |
---|
5 | import java.net.URL; |
---|
6 | import java.net.URLConnection; |
---|
7 | import java.util.HashMap; |
---|
8 | import java.util.Map; |
---|
9 | |
---|
10 | import javax.servlet.http.HttpServletRequest; |
---|
11 | |
---|
12 | import org.apache.log4j.Logger; |
---|
13 | import org.apache.struts2.interceptor.ServletRequestAware; |
---|
14 | import org.w3c.dom.Document; |
---|
15 | |
---|
16 | import com.opensymphony.xwork2.ActionSupport; |
---|
17 | // import com.sun.xml.internal.ws.util.StringUtils; |
---|
18 | |
---|
19 | import eu.clarin.cmdi.mdservice.internal.CQLParseException; |
---|
20 | import eu.clarin.cmdi.mdservice.internal.Cache; |
---|
21 | import eu.clarin.cmdi.mdservice.internal.MDTransformer; |
---|
22 | import eu.clarin.cmdi.mdservice.internal.NoStylesheetException; |
---|
23 | import eu.clarin.cmdi.mdservice.internal.Utils; |
---|
24 | import eu.clarin.cmdi.mdservice.model.Diagnostic; |
---|
25 | import eu.clarin.cmdi.mdservice.model.Diagnostics; |
---|
26 | import eu.clarin.cmdi.mdservice.model.WorkspaceProfile; |
---|
27 | import eu.clarin.cmdi.mdservice.proxy.ProxyInterface; |
---|
28 | |
---|
29 | |
---|
30 | |
---|
31 | /** |
---|
32 | * Main Struts2 controller (ie implemenets the struts' execute()-method), all other Actions are derived from. |
---|
33 | * Defines the methods used for retrieving the data |
---|
34 | * and provides basic implementation where possible. |
---|
35 | * Also responsible for caching and transformation of the result. |
---|
36 | * |
---|
37 | * @author vronk |
---|
38 | */ |
---|
39 | public class GenericAction extends ActionSupport |
---|
40 | implements ServletRequestAware |
---|
41 | { |
---|
42 | |
---|
43 | public static Logger log = Logger.getLogger("GenericAction"); |
---|
44 | private static final long serialVersionUID = 1L; |
---|
45 | |
---|
46 | private Diagnostics diagnostics; |
---|
47 | |
---|
48 | private String actionkey = "generic"; |
---|
49 | private String q; |
---|
50 | protected String format = "xml"; |
---|
51 | |
---|
52 | private String actionContentType; |
---|
53 | private HttpServletRequest request; |
---|
54 | private long duration = 0; |
---|
55 | private InputStream resultStream; |
---|
56 | private InputStream sourceStream; |
---|
57 | |
---|
58 | protected Map<String,String[]> params; |
---|
59 | |
---|
60 | private ProxyInterface target_proxy; |
---|
61 | |
---|
62 | /** |
---|
63 | * Gets the target proxy. |
---|
64 | * |
---|
65 | * @return target proxy |
---|
66 | */ |
---|
67 | public ProxyInterface getTargetProxy() { |
---|
68 | return target_proxy; |
---|
69 | } |
---|
70 | |
---|
71 | /** |
---|
72 | * Sets the particular proxy and its source action. |
---|
73 | * |
---|
74 | * @param proxy - interface to be set |
---|
75 | */ |
---|
76 | public void setTargetProxy(ProxyInterface proxy) { |
---|
77 | target_proxy = proxy; |
---|
78 | target_proxy.setSourceAction(this); |
---|
79 | } |
---|
80 | |
---|
81 | public String getOperation() { |
---|
82 | return getParam("operation"); |
---|
83 | } |
---|
84 | |
---|
85 | /** |
---|
86 | * Empty implementation, subclasses have to decide themselves, which proxy to take. |
---|
87 | */ |
---|
88 | public void setTargetProxy() { |
---|
89 | } |
---|
90 | |
---|
91 | |
---|
92 | /** |
---|
93 | * Gets the diagnostics. |
---|
94 | * |
---|
95 | * @return diagnostics |
---|
96 | */ |
---|
97 | public Diagnostics getDiagnostics(){ |
---|
98 | if (diagnostics == null){ |
---|
99 | diagnostics = new Diagnostics(); |
---|
100 | } |
---|
101 | return this.diagnostics; |
---|
102 | } |
---|
103 | |
---|
104 | /** |
---|
105 | * Sets the diagnostics. |
---|
106 | * |
---|
107 | * @param diagnostics |
---|
108 | */ |
---|
109 | public void setDiagnostics(Diagnostics diagnostics){ |
---|
110 | this.diagnostics = diagnostics; |
---|
111 | } |
---|
112 | |
---|
113 | /** |
---|
114 | * Gets string variable q. |
---|
115 | * |
---|
116 | * @return |
---|
117 | */ |
---|
118 | public String getQ() { |
---|
119 | return q; |
---|
120 | } |
---|
121 | |
---|
122 | /** |
---|
123 | * Sets the variable q. |
---|
124 | * |
---|
125 | * @param q |
---|
126 | */ |
---|
127 | public void setQ(String q) { |
---|
128 | this.q = q; |
---|
129 | } |
---|
130 | |
---|
131 | public String getUserName(){ |
---|
132 | |
---|
133 | return null; |
---|
134 | } |
---|
135 | /** |
---|
136 | * Sets the variable format. Used by Struts in case the format is part of the request path. |
---|
137 | * In the case the format is part of the request parameters, it is read by servlet request. |
---|
138 | * |
---|
139 | * @param format |
---|
140 | */ |
---|
141 | public void setFormat(String format) { |
---|
142 | this.format = format; |
---|
143 | } |
---|
144 | |
---|
145 | |
---|
146 | public String getActionkey() { |
---|
147 | return actionkey; |
---|
148 | } |
---|
149 | |
---|
150 | public void setActionkey(String actionKey) { |
---|
151 | actionkey = actionKey; |
---|
152 | } |
---|
153 | |
---|
154 | /** |
---|
155 | * Gets the scanClause parameter from the parameter map. |
---|
156 | * |
---|
157 | * @return |
---|
158 | */ |
---|
159 | public String getScanClause() { |
---|
160 | return getParam("scanClause"); |
---|
161 | } |
---|
162 | |
---|
163 | /** |
---|
164 | * Gets the recordPacking parameter from the parameter map. |
---|
165 | * |
---|
166 | * @return |
---|
167 | */ |
---|
168 | public String getRecordPacking() { |
---|
169 | return getParam("recordPacking"); |
---|
170 | } |
---|
171 | |
---|
172 | public String getQuery() { |
---|
173 | return getParam("query"); |
---|
174 | } |
---|
175 | |
---|
176 | public String getStartRecord() { |
---|
177 | return getParam("startRecord"); |
---|
178 | } |
---|
179 | |
---|
180 | public String getMaximumRecords() { |
---|
181 | return getParam("maximumRecords"); |
---|
182 | } |
---|
183 | |
---|
184 | public String getFormat() { |
---|
185 | return getParam("format"); |
---|
186 | } |
---|
187 | |
---|
188 | public String getCache() { |
---|
189 | return getParam("cache"); |
---|
190 | } |
---|
191 | |
---|
192 | public String getRepository() { |
---|
193 | //return getParam("repository"); |
---|
194 | return getParam("x-context"); |
---|
195 | } |
---|
196 | |
---|
197 | public String getLang() { |
---|
198 | return getParam("lang"); |
---|
199 | } |
---|
200 | |
---|
201 | public String getCollections() { |
---|
202 | return getParam("collections"); |
---|
203 | } |
---|
204 | |
---|
205 | public String getColumns() { |
---|
206 | return getParam("columns"); |
---|
207 | } |
---|
208 | |
---|
209 | public String getMaxdepth() { |
---|
210 | return getParam("maxdepth"); |
---|
211 | } |
---|
212 | |
---|
213 | |
---|
214 | public GenericAction() { |
---|
215 | //configure |
---|
216 | Utils.loadConfig("mdservice", "mdservice.properties", this.getClass().getClassLoader()); |
---|
217 | params = new HashMap<String, String[]>(); |
---|
218 | } |
---|
219 | /** |
---|
220 | * Is used in struts.xml to dynamically set the mime-type of the result, depending on the format-parameter |
---|
221 | * |
---|
222 | * @return |
---|
223 | */ |
---|
224 | public String getActionContentType() { |
---|
225 | if (this.getFormat().toLowerCase().startsWith("html")) { // && !getDiagnostics().Exists()) { |
---|
226 | this.actionContentType = "text/html"; |
---|
227 | //this.actionContentType = "application/xhtml+xml"; |
---|
228 | } else { |
---|
229 | this.actionContentType = "text/xml"; |
---|
230 | } |
---|
231 | |
---|
232 | return actionContentType; |
---|
233 | } |
---|
234 | |
---|
235 | public void setActionContentType(String actionContentType) { |
---|
236 | this.actionContentType = actionContentType; |
---|
237 | } |
---|
238 | |
---|
239 | |
---|
240 | public String getFullFormat() { |
---|
241 | return actionkey + "2" + getFormat(); |
---|
242 | } |
---|
243 | |
---|
244 | /** |
---|
245 | * Needed to acquire the original ServletRequest |
---|
246 | * (want to access the raw params - in loadParams()) |
---|
247 | * @return |
---|
248 | */ |
---|
249 | @Override |
---|
250 | public void setServletRequest(HttpServletRequest arg0) { |
---|
251 | request = arg0; |
---|
252 | } |
---|
253 | |
---|
254 | public HttpServletRequest getServletRequest() { |
---|
255 | return request; |
---|
256 | } |
---|
257 | |
---|
258 | /** |
---|
259 | * The stream holding the resulting data to be sent back to the user as response. |
---|
260 | * @return |
---|
261 | */ |
---|
262 | public InputStream getResultStream() { |
---|
263 | return resultStream; |
---|
264 | } |
---|
265 | |
---|
266 | public void setResultStream(InputStream _resultStream){ |
---|
267 | resultStream = _resultStream; |
---|
268 | } |
---|
269 | |
---|
270 | public void setSourceStream(InputStream _sourceStream){ |
---|
271 | sourceStream = _sourceStream; |
---|
272 | } |
---|
273 | |
---|
274 | |
---|
275 | /** |
---|
276 | * Get the sourceStream from the target proxy. |
---|
277 | * @return |
---|
278 | * @throws IOException |
---|
279 | * @throws NoStylesheetException |
---|
280 | * @throws CQLParseException |
---|
281 | */ |
---|
282 | public InputStream getSourceStream() throws IOException, NoStylesheetException, CQLParseException { |
---|
283 | |
---|
284 | return getTargetProxy().getSourceStream(); |
---|
285 | |
---|
286 | } |
---|
287 | |
---|
288 | /** |
---|
289 | * Add parameter into local parameter map. |
---|
290 | * |
---|
291 | * @param key - parameter key |
---|
292 | * @param value - parameter value |
---|
293 | */ |
---|
294 | public void addParam(String key, String value){ |
---|
295 | String[] sarr = new String[1]; |
---|
296 | sarr[0] = value; |
---|
297 | params.put(key, sarr); |
---|
298 | } |
---|
299 | |
---|
300 | /** |
---|
301 | * Set parameter in local parameter map. |
---|
302 | * |
---|
303 | * @param key - parameter key |
---|
304 | * @param value - parameter value |
---|
305 | */ |
---|
306 | public void setParam(String key, String value){ |
---|
307 | addParam(key, value); |
---|
308 | } |
---|
309 | |
---|
310 | /** |
---|
311 | * Reads in all the parameters of the request into an internal structure. |
---|
312 | * the Map is not Map<String,String>, but rather Map<String,String[]>, |
---|
313 | * ie the value is an array of Strings! <a href="http://download.oracle.com/docs/cd/E17802_01/webservices/webservices/docs/1.5/api/javax/servlet/ServletRequest.html#getParameterMap%28%29" >javadocs:ServletRequest.getParameterMap()</a> |
---|
314 | * |
---|
315 | * This shall allow more flexibility in using the parameters in the subclasses (and less getter/setter stuff) |
---|
316 | * at the cost of circumventing the Struts-way. |
---|
317 | * |
---|
318 | * |
---|
319 | * The params are completed to fulfill sru params standard an also the params needed by XSL transformation |
---|
320 | * are added. |
---|
321 | * |
---|
322 | * SRU PARAMS: |
---|
323 | * version |
---|
324 | * operation |
---|
325 | * query |
---|
326 | * scanClause |
---|
327 | * startRecord |
---|
328 | * maximumRecords |
---|
329 | * recordPacking |
---|
330 | * recordSchema |
---|
331 | * recordXPath |
---|
332 | * resultSetTTL |
---|
333 | * sortKeys |
---|
334 | * queryType (SRU 2.0 draft) |
---|
335 | * stylesheet |
---|
336 | * x-cmd-repository |
---|
337 | * x-cmd-collections |
---|
338 | * x-cmd-columns |
---|
339 | * x-cmd-lang |
---|
340 | * x-cmd-format |
---|
341 | * x-cmd-cache |
---|
342 | * x-cmd-maxdepth |
---|
343 | */ |
---|
344 | @SuppressWarnings("unchecked") |
---|
345 | protected void loadParams() { |
---|
346 | |
---|
347 | if (getServletRequest() != null){ |
---|
348 | params.putAll(getServletRequest().getParameterMap()); |
---|
349 | } |
---|
350 | setDefaultParams(); |
---|
351 | |
---|
352 | |
---|
353 | } |
---|
354 | |
---|
355 | protected void setDefaultParams(){ |
---|
356 | // set defaults |
---|
357 | if ( params.get("version") == null){ |
---|
358 | addParam("version","1.2"); |
---|
359 | } |
---|
360 | if ( params.get("operation") == null){ |
---|
361 | addParam("operation","searchRetrieve"); |
---|
362 | } |
---|
363 | //q=query |
---|
364 | if (getQ() != null) { |
---|
365 | addParam("q",getQ()); |
---|
366 | addParam("query",getQ()); |
---|
367 | } else { |
---|
368 | addParam("q",this.getParam("query")); |
---|
369 | } |
---|
370 | |
---|
371 | if ( params.get("startRecord") == null){ |
---|
372 | addParam("startRecord","1"); |
---|
373 | } |
---|
374 | if ( params.get("maximumRecords") == null){ |
---|
375 | addParam("maximumRecords","10"); |
---|
376 | } |
---|
377 | |
---|
378 | if ( params.get("x-cmd-maxdepth") == null){ |
---|
379 | if (params.get("maxdepth") == null){ |
---|
380 | addParam("maxdepth","2"); |
---|
381 | } |
---|
382 | } else { |
---|
383 | addParam("maxdepth",params.get("x-cmd-maxdepth")[0]); |
---|
384 | } |
---|
385 | /* |
---|
386 | if ( params.get("x-cmd-repository") == null){ |
---|
387 | if (params.get("repository") == null){ |
---|
388 | if (params.get("x-context") == null){ |
---|
389 | addParam("repository",Repositories.getRepositories().getRepositoryByIndex(0)); |
---|
390 | } else { |
---|
391 | // search in fcs-mapping |
---|
392 | //addParam("repository",WorkspaceProfile.getFCSMapping(params.get("x-context")[0])); |
---|
393 | //addParam("repository",params.get("x-context")[0]); |
---|
394 | } |
---|
395 | } |
---|
396 | } else { |
---|
397 | addParam("repository",params.get("x-cmd-repository")[0]); |
---|
398 | } |
---|
399 | */ |
---|
400 | if ( params.get("x-cmd-repository") != null){ |
---|
401 | addParam("x-context",params.get("x-cmd-repository")[0]); |
---|
402 | } |
---|
403 | |
---|
404 | if ( params.get("x-cmd-cache") == null){ |
---|
405 | if (params.get("cache") == null){ |
---|
406 | addParam("cache",Cache.SKIP); |
---|
407 | } |
---|
408 | } else { |
---|
409 | addParam("cache",params.get("x-cmd-cache")[0]); |
---|
410 | } |
---|
411 | |
---|
412 | if ( params.get("x-cmd-lang") == null){ |
---|
413 | if (params.get("lang") == null){ |
---|
414 | addParam("lang","en"); |
---|
415 | } |
---|
416 | } else { |
---|
417 | addParam("lang",params.get("x-cmd-lang")[0]); |
---|
418 | } |
---|
419 | |
---|
420 | if ( params.get("x-cmd-format") == null){ |
---|
421 | if (params.get("format") == null){ |
---|
422 | if (this.format == null) { |
---|
423 | addParam("format","xml"); |
---|
424 | } else if (this.format.equals("")){ |
---|
425 | addParam("format","xml"); |
---|
426 | } else { |
---|
427 | addParam("format",this.format); |
---|
428 | } |
---|
429 | } |
---|
430 | } else { |
---|
431 | addParam("format",params.get("x-cmd-format")[0]); |
---|
432 | } |
---|
433 | |
---|
434 | addParam("fullformat",getFullFormat()); |
---|
435 | } |
---|
436 | /** |
---|
437 | * Gets the local parameter map. |
---|
438 | * |
---|
439 | * @return |
---|
440 | */ |
---|
441 | public Map<String,String[]> getParams() { |
---|
442 | return params; |
---|
443 | } |
---|
444 | |
---|
445 | |
---|
446 | /** |
---|
447 | * This is for simplified access to the the values of the request-parameters |
---|
448 | * They are stored in the parameters-map as a String-array, |
---|
449 | * but in most(?) situations, we expect just a simple string. |
---|
450 | * @param key |
---|
451 | * @return |
---|
452 | */ |
---|
453 | public String getParam(String key) { |
---|
454 | String v = ""; |
---|
455 | if (!(params.get(key)==null)) v=(String)params.get(key)[0]; |
---|
456 | return v; |
---|
457 | } |
---|
458 | |
---|
459 | public String[] getParamArray(String key) { |
---|
460 | String[] a = null; |
---|
461 | if (!(params.get(key)==null)) a=(String[])params.get(key); |
---|
462 | return a; |
---|
463 | } |
---|
464 | |
---|
465 | /** |
---|
466 | * Constructs an unambiguous key for the request (encoding all the parameters). |
---|
467 | * This is used as identifier for caching . |
---|
468 | * |
---|
469 | * @return key unambiguously encoding the request |
---|
470 | */ |
---|
471 | |
---|
472 | public String getRequestKey() { |
---|
473 | String key=""; |
---|
474 | if (getActionkey()!=null) { |
---|
475 | key += getActionkey() + "//-" ; |
---|
476 | }else { |
---|
477 | key +="//-" ; |
---|
478 | } |
---|
479 | if (!getQuery().equals("")) { |
---|
480 | key += getQuery() + "//-" ; |
---|
481 | } else { |
---|
482 | key += getScanClause() + "//-" ; |
---|
483 | } |
---|
484 | key += getOperation() + "//-"; |
---|
485 | |
---|
486 | key += getCollections() + "//-"; |
---|
487 | |
---|
488 | key += getStartRecord() + "//-"; |
---|
489 | |
---|
490 | key += getMaximumRecords() + "//-"; |
---|
491 | |
---|
492 | key += getRepository() + "//-"; |
---|
493 | key += getMaxdepth() + "//-"; |
---|
494 | |
---|
495 | key += getLang() + "//-"; |
---|
496 | |
---|
497 | return key; |
---|
498 | } |
---|
499 | |
---|
500 | |
---|
501 | /** |
---|
502 | * Adds the duration value of the action execution to the request key. |
---|
503 | * |
---|
504 | * @return |
---|
505 | */ |
---|
506 | public String addDurationKey(){ |
---|
507 | String req_key = getRequestKey(); |
---|
508 | |
---|
509 | Double duration_d; |
---|
510 | |
---|
511 | duration_d = (double)duration; |
---|
512 | duration_d = duration_d/1000.0; |
---|
513 | req_key += duration_d + "//-"; |
---|
514 | return req_key; |
---|
515 | } |
---|
516 | |
---|
517 | |
---|
518 | public String getTargetRequestParams(){ |
---|
519 | return ""; |
---|
520 | } |
---|
521 | |
---|
522 | public void setRequestProperties(URLConnection urlConnection){ |
---|
523 | |
---|
524 | } |
---|
525 | |
---|
526 | public boolean checkTargetProxy(){ |
---|
527 | return true; |
---|
528 | } |
---|
529 | |
---|
530 | public URL getTargetRequest() throws IOException, CQLParseException{ |
---|
531 | if (getTargetProxy() == null){ |
---|
532 | return null; |
---|
533 | } |
---|
534 | return getTargetProxy().getTargetRequest(); |
---|
535 | } |
---|
536 | |
---|
537 | public void checkParams(){ |
---|
538 | getTargetProxy().checkParams(); |
---|
539 | } |
---|
540 | /** |
---|
541 | * This is the work-horse function. |
---|
542 | * It does more things: |
---|
543 | * a) Loads the request parameters. |
---|
544 | * b) Creates the concerned proxy object. |
---|
545 | * c) Checks if the source data is already in cache (based on cache-key that is constructed from the request parameters). |
---|
546 | * d) If diagnostics occurred during function, the diagnostics data will be added into source data. |
---|
547 | * e) If format-parameter provided, invokes the transformation. |
---|
548 | * |
---|
549 | * |
---|
550 | * At the end the data to be returned as result is contained in the resultStream |
---|
551 | * If format is xml, then the data from sourceStream is passed further as resultStream. |
---|
552 | * |
---|
553 | * If exception occurred within prepare function , it will be caught and written |
---|
554 | * as diagnostics system error. |
---|
555 | * |
---|
556 | */ |
---|
557 | public void prepare() { |
---|
558 | |
---|
559 | try{ |
---|
560 | |
---|
561 | loadParams(); |
---|
562 | |
---|
563 | |
---|
564 | setTargetProxy(); |
---|
565 | if (checkTargetProxy()) { |
---|
566 | if (getTargetProxy() == null) |
---|
567 | return; |
---|
568 | } |
---|
569 | checkParams(); |
---|
570 | |
---|
571 | |
---|
572 | // Do not continue if something is fatal. |
---|
573 | if (getDiagnostics().Exists()) return; |
---|
574 | |
---|
575 | String req_key = getRequestKey(); |
---|
576 | log.debug("request_key: " + req_key); |
---|
577 | log.debug("params.size: " + params.size()); |
---|
578 | if (getTargetRequest() != null){ |
---|
579 | log.debug(getActionkey() + ".targetURL: " + getTargetRequest() + " .format:" + getFullFormat()); |
---|
580 | } |
---|
581 | |
---|
582 | //Caching |
---|
583 | if (getFormat().equals("htmljspage")) { |
---|
584 | setSourceStream(WorkspaceProfile.createStream("htmljspage")); |
---|
585 | } else { |
---|
586 | |
---|
587 | if (getCache().equals(Cache.SKIP)) { |
---|
588 | sourceStream = getSourceStream(); |
---|
589 | } else { |
---|
590 | if (getCache().equals(Cache.USE)) { |
---|
591 | sourceStream = Cache.getCache().getFromCache(req_key); |
---|
592 | } |
---|
593 | if (sourceStream == null) { // either not in cache or cache_flag=refresh |
---|
594 | long startMillis = System.currentTimeMillis(); |
---|
595 | sourceStream = getSourceStream(); |
---|
596 | duration = System.currentTimeMillis() - startMillis; |
---|
597 | req_key = addDurationKey(); |
---|
598 | String xcid = Cache.getCache().putInCache(req_key,sourceStream); |
---|
599 | log.debug("putting in cache: " + req_key + ", " + xcid); |
---|
600 | sourceStream = Cache.getCache().getFromCache(req_key); |
---|
601 | } else { |
---|
602 | log.debug("reading from cache: " + req_key); |
---|
603 | } |
---|
604 | } |
---|
605 | } |
---|
606 | |
---|
607 | |
---|
608 | // append diagnostics to sourcestream |
---|
609 | if (getDiagnostics().Exists()){ |
---|
610 | if (sourceStream == null) return; |
---|
611 | |
---|
612 | Document doc = Utils.stream2Document(sourceStream); |
---|
613 | //TODO tagname by class |
---|
614 | doc = Utils.append2Document(doc, "searchRetrieveResponse", getDiagnostics().buildXMLDocument()); |
---|
615 | this.setSourceStream(Utils.document2Stream(doc)); |
---|
616 | } |
---|
617 | |
---|
618 | log.debug("format: " + getFormat() ); |
---|
619 | if (getFormat().equals("xml")) { |
---|
620 | resultStream = sourceStream; |
---|
621 | }else { |
---|
622 | MDTransformer transformer = new MDTransformer(); |
---|
623 | // this is necessary for the transformer (in MDUTILS-library) to search for the resources (config and xsls) in the correct context) |
---|
624 | transformer.configure(Utils.getAppConfig("mdservice"), this.getClass().getClassLoader()); |
---|
625 | // set URL as srcFile (for MDTransformer to pass to xsl-scripts) |
---|
626 | // TODO: WHY?? |
---|
627 | transformer.setSrcFile(getTargetRequest()); |
---|
628 | transformer.setParams(getParams()); |
---|
629 | // here the transformation is invoked |
---|
630 | resultStream = transformer.transformXML(sourceStream); |
---|
631 | } |
---|
632 | |
---|
633 | }catch (Exception e){ |
---|
634 | log.error(Utils.errorMessage(e)); |
---|
635 | //TODO add exception to diagnostic ? |
---|
636 | getDiagnostics().Add(Diagnostic.SYSTEM_ERROR, Utils.errorMessage(e)); |
---|
637 | return; |
---|
638 | } |
---|
639 | |
---|
640 | log.debug(getActionkey() + " success:" + (resultStream!=null)); |
---|
641 | } |
---|
642 | |
---|
643 | /** |
---|
644 | * Default Action method that gets called by Struts. Everything interesting happens in prepare() |
---|
645 | * In case an error occurred in prepare and the result stream is not returned, the diagnostics will be returned |
---|
646 | * as result. |
---|
647 | * |
---|
648 | * @throws Exception This is handled by struts (is mapped to some result in struts.xml based on the Exception-Class). |
---|
649 | */ |
---|
650 | public String execute() throws Exception { |
---|
651 | |
---|
652 | prepare(); |
---|
653 | |
---|
654 | if (resultStream == null) { |
---|
655 | // diagnostics to resultstream |
---|
656 | if (getDiagnostics().Exists()){ |
---|
657 | this.setResultStream( Utils.document2Stream(getDiagnostics().buildXMLDocument())); |
---|
658 | return SUCCESS; |
---|
659 | } |
---|
660 | return ERROR; |
---|
661 | } else { |
---|
662 | return SUCCESS; |
---|
663 | } |
---|
664 | } |
---|
665 | |
---|
666 | |
---|
667 | } |
---|