Mercurial > hg > AnnotationManagerN4J
annotate src/main/java/de/mpiwg/itgroup/annotations/restlet/AnnotatorResourceImpl.java @ 61:b8ef15c8c4a5
implemented new shape format for image annotations.
minor cleanups.
author | casties |
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date | Thu, 22 Nov 2012 17:38:53 +0100 |
parents | f5c0e6df7e88 |
children | 9f8c9611848a |
rev | line source |
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3 | 1 /** |
2 * Base class for Annotator resource classes. | |
3 */ | |
4 package de.mpiwg.itgroup.annotations.restlet; | |
5 | |
6 import java.io.UnsupportedEncodingException; | |
7 import java.security.InvalidKeyException; | |
8 import java.security.SignatureException; | |
5 | 9 import java.text.SimpleDateFormat; |
3 | 10 import java.util.ArrayList; |
5 | 11 import java.util.Calendar; |
16 | 12 import java.util.HashSet; |
3 | 13 import java.util.List; |
16 | 14 import java.util.Set; |
3 | 15 import java.util.regex.Matcher; |
16 import java.util.regex.Pattern; | |
17 | |
18 import net.oauth.jsontoken.Checker; | |
19 import net.oauth.jsontoken.JsonToken; | |
20 import net.oauth.jsontoken.JsonTokenParser; | |
21 import net.oauth.jsontoken.SystemClock; | |
22 import net.oauth.jsontoken.crypto.HmacSHA256Verifier; | |
23 import net.oauth.jsontoken.crypto.Verifier; | |
24 | |
25 import org.apache.commons.codec.binary.Base64; | |
26 import org.apache.log4j.Logger; | |
27 import org.json.JSONArray; | |
28 import org.json.JSONException; | |
29 import org.json.JSONObject; | |
30 import org.restlet.data.Form; | |
31 import org.restlet.data.Status; | |
32 import org.restlet.representation.Representation; | |
33 import org.restlet.resource.Options; | |
34 import org.restlet.resource.ServerResource; | |
35 | |
9 | 36 import de.mpiwg.itgroup.annotations.Actor; |
4 | 37 import de.mpiwg.itgroup.annotations.Annotation; |
38 import de.mpiwg.itgroup.annotations.Annotation.FragmentTypes; | |
10 | 39 import de.mpiwg.itgroup.annotations.Group; |
40 import de.mpiwg.itgroup.annotations.Person; | |
48
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41 import de.mpiwg.itgroup.annotations.Resource; |
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42 import de.mpiwg.itgroup.annotations.Target; |
4 | 43 import de.mpiwg.itgroup.annotations.neo4j.AnnotationStore; |
3 | 44 |
45 /** | |
46 * Base class for Annotator resource classes. | |
47 * | |
48 * @author dwinter, casties | |
49 * | |
50 */ | |
51 public abstract class AnnotatorResourceImpl extends ServerResource { | |
52 | |
4 | 53 protected static Logger logger = Logger.getLogger(AnnotatorResourceImpl.class); |
54 | |
55 private AnnotationStore store; | |
3 | 56 |
57 protected String getAllowedMethodsForHeader() { | |
58 return "OPTIONS,GET,POST"; | |
59 } | |
60 | |
4 | 61 protected AnnotationStore getAnnotationStore() { |
62 if (store == null) { | |
19 | 63 store = ((BaseRestlet) getApplication()).getAnnotationStore(); |
4 | 64 } |
65 return store; | |
66 } | |
67 | |
3 | 68 public String encodeJsonId(String id) { |
22 | 69 if (id == null) return null; |
3 | 70 try { |
71 return Base64.encodeBase64URLSafeString(id.getBytes("UTF-8")); | |
72 } catch (UnsupportedEncodingException e) { | |
73 return null; | |
74 } | |
75 } | |
76 | |
77 public String decodeJsonId(String id) { | |
22 | 78 if (id == null) return null; |
3 | 79 try { |
80 return new String(Base64.decodeBase64(id), "UTF-8"); | |
81 } catch (UnsupportedEncodingException e) { | |
82 return null; | |
83 } | |
84 } | |
85 | |
86 /** | |
87 * Handle options request to allow CORS for AJAX. | |
88 * | |
89 * @param entity | |
90 */ | |
91 @Options | |
92 public void doOptions(Representation entity) { | |
93 logger.debug("AnnotatorResourceImpl doOptions!"); | |
94 setCorsHeaders(); | |
95 } | |
96 | |
97 /** | |
98 * set headers to allow CORS for AJAX. | |
99 */ | |
100 protected void setCorsHeaders() { | |
101 Form responseHeaders = (Form) getResponse().getAttributes().get("org.restlet.http.headers"); | |
102 if (responseHeaders == null) { | |
103 responseHeaders = new Form(); | |
104 getResponse().getAttributes().put("org.restlet.http.headers", responseHeaders); | |
105 } | |
106 responseHeaders.add("Access-Control-Allow-Methods", getAllowedMethodsForHeader()); | |
107 // echo back Origin and Request-Headers | |
108 Form requestHeaders = (Form) getRequest().getAttributes().get("org.restlet.http.headers"); | |
109 String origin = requestHeaders.getFirstValue("Origin", true); | |
110 if (origin == null) { | |
111 responseHeaders.add("Access-Control-Allow-Origin", "*"); | |
112 } else { | |
113 responseHeaders.add("Access-Control-Allow-Origin", origin); | |
114 } | |
115 String allowHeaders = requestHeaders.getFirstValue("Access-Control-Request-Headers", true); | |
116 if (allowHeaders != null) { | |
117 responseHeaders.add("Access-Control-Allow-Headers", allowHeaders); | |
118 } | |
119 responseHeaders.add("Access-Control-Allow-Credentials", "true"); | |
120 responseHeaders.add("Access-Control-Max-Age", "60"); | |
121 } | |
122 | |
123 /** | |
124 * returns if authentication information from headers is valid. | |
125 * | |
126 * @param entity | |
127 * @return | |
128 */ | |
129 public boolean isAuthenticated(Representation entity) { | |
130 return (checkAuthToken(entity) != null); | |
131 } | |
132 | |
133 /** | |
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134 * Checks Annotator Auth plugin authentication information from headers. |
61 | 135 * Returns userId if successful. Returns "anonymous" in non-authorization |
136 * mode. | |
3 | 137 * |
138 * @param entity | |
139 * @return | |
140 */ | |
141 public String checkAuthToken(Representation entity) { | |
142 Form requestHeaders = (Form) getRequest().getAttributes().get("org.restlet.http.headers"); | |
143 String authToken = requestHeaders.getFirstValue("x-annotator-auth-token", true); | |
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144 if (authToken == null) { |
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145 if (!((BaseRestlet) getApplication()).isAuthorizationMode()) { |
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146 return "anonymous"; |
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147 } |
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148 return null; |
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149 } |
3 | 150 // decode token first to get consumer key |
151 JsonToken token = new JsonTokenParser(null, null).deserialize(authToken); | |
152 String userId = token.getParamAsPrimitive("userId").getAsString(); | |
153 String consumerKey = token.getParamAsPrimitive("consumerKey").getAsString(); | |
154 // get stored consumer secret for key | |
18 | 155 BaseRestlet restServer = (BaseRestlet) getApplication(); |
3 | 156 String consumerSecret = restServer.getConsumerSecret(consumerKey); |
157 logger.debug("requested consumer key=" + consumerKey + " secret=" + consumerSecret); | |
158 if (consumerSecret == null) { | |
159 return null; | |
160 } | |
161 // logger.debug(String.format("token=%s tokenString=%s signatureAlgorithm=%s",token,token.getTokenString(),token.getSignatureAlgorithm())); | |
162 try { | |
163 List<Verifier> verifiers = new ArrayList<Verifier>(); | |
164 // we only do HS256 yet | |
165 verifiers.add(new HmacSHA256Verifier(consumerSecret.getBytes("UTF-8"))); | |
166 // verify token signature(should really be static...) | |
167 new JsonTokenParser(new SystemClock(), null, (Checker[]) null).verify(token, verifiers); | |
168 } catch (SignatureException e) { | |
169 // TODO Auto-generated catch block | |
170 e.printStackTrace(); | |
171 } catch (InvalidKeyException e) { | |
172 // TODO Auto-generated catch block | |
173 e.printStackTrace(); | |
174 } catch (UnsupportedEncodingException e) { | |
175 // TODO Auto-generated catch block | |
176 e.printStackTrace(); | |
177 } | |
178 // must be ok then | |
179 logger.debug("auth OK! user=" + userId); | |
180 return userId; | |
181 } | |
182 | |
183 /** | |
184 * creates Annotator-JSON from an Annotation object. | |
185 * | |
186 * @param annot | |
61 | 187 * @param forAnonymous |
188 * TODO | |
3 | 189 * @return |
190 */ | |
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191 public JSONObject createAnnotatorJson(Annotation annot, boolean forAnonymous) { |
5 | 192 // return user as a JSON object (otherwise just as string) |
3 | 193 boolean makeUserObject = true; |
194 JSONObject jo = new JSONObject(); | |
195 try { | |
4 | 196 jo.put("text", annot.getBodyText()); |
197 jo.put("uri", annot.getTargetBaseUri()); | |
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198 if (annot.getResourceUri() != null) { |
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199 jo.put("resource", annot.getResourceUri()); |
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200 } |
3 | 201 |
16 | 202 /* |
203 * user | |
204 */ | |
3 | 205 if (makeUserObject) { |
206 // create user object | |
207 JSONObject userObject = new JSONObject(); | |
10 | 208 Actor creator = annot.getCreator(); |
3 | 209 // save creator as uri |
10 | 210 userObject.put("uri", creator.getUri()); |
3 | 211 // make short user id |
10 | 212 String userId = creator.getIdString(); |
9 | 213 // set as id |
4 | 214 userObject.put("id", userId); |
3 | 215 // get full name |
10 | 216 String userName = creator.getName(); |
5 | 217 if (userName == null) { |
18 | 218 BaseRestlet restServer = (BaseRestlet) getApplication(); |
5 | 219 userName = restServer.getFullNameFromLdap(userId); |
220 } | |
3 | 221 userObject.put("name", userName); |
222 // save user object | |
223 jo.put("user", userObject); | |
224 } else { | |
225 // save user as string | |
4 | 226 jo.put("user", annot.getCreatorUri()); |
3 | 227 } |
228 | |
16 | 229 /* |
230 * ranges | |
231 */ | |
4 | 232 if (annot.getTargetFragment() != null) { |
3 | 233 // we only look at the first xpointer |
4 | 234 List<String> fragments = new ArrayList<String>(); |
235 fragments.add(annot.getTargetFragment()); | |
236 FragmentTypes xt = annot.getFragmentType(); | |
237 if (xt == FragmentTypes.XPOINTER) { | |
238 jo.put("ranges", transformToRanges(fragments)); | |
239 } else if (xt == FragmentTypes.AREA) { | |
61 | 240 jo.put("shapes", transformToShapes(fragments)); |
3 | 241 } |
242 } | |
61 | 243 |
16 | 244 /* |
245 * permissions | |
246 */ | |
10 | 247 JSONObject perms = new JSONObject(); |
248 jo.put("permissions", perms); | |
249 // admin | |
250 JSONArray adminPerms = new JSONArray(); | |
251 perms.put("admin", adminPerms); | |
252 Actor adminPerm = annot.getAdminPermission(); | |
253 if (adminPerm != null) { | |
254 adminPerms.put(adminPerm.getIdString()); | |
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255 } else if (forAnonymous) { |
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256 // set something because its not allowed for anonymous |
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257 adminPerms.put("not-you"); |
10 | 258 } |
259 // delete | |
260 JSONArray deletePerms = new JSONArray(); | |
261 perms.put("delete", deletePerms); | |
262 Actor deletePerm = annot.getDeletePermission(); | |
263 if (deletePerm != null) { | |
264 deletePerms.put(deletePerm.getIdString()); | |
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265 } else if (forAnonymous) { |
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266 // set something because its not allowed for anonymous |
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267 deletePerms.put("not-you"); |
10 | 268 } |
269 // update | |
270 JSONArray updatePerms = new JSONArray(); | |
271 perms.put("update", updatePerms); | |
272 Actor updatePerm = annot.getUpdatePermission(); | |
273 if (updatePerm != null) { | |
274 updatePerms.put(updatePerm.getIdString()); | |
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275 } else if (forAnonymous) { |
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276 // set something because its not allowed for anonymous |
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277 updatePerms.put("not-you"); |
10 | 278 } |
279 // read | |
280 JSONArray readPerms = new JSONArray(); | |
281 perms.put("read", readPerms); | |
282 Actor readPerm = annot.getReadPermission(); | |
283 if (readPerm != null) { | |
284 readPerms.put(readPerm.getIdString()); | |
285 } | |
61 | 286 |
16 | 287 /* |
288 * tags | |
289 */ | |
61 | 290 Set<String> tagset = annot.getTags(); |
16 | 291 if (tagset != null) { |
292 JSONArray tags = new JSONArray(); | |
293 jo.put("tags", tags); | |
294 for (String tag : tagset) { | |
295 tags.put(tag); | |
296 } | |
297 } | |
61 | 298 |
16 | 299 /* |
300 * id | |
301 */ | |
3 | 302 // encode Annotation URL (=id) in base64 |
4 | 303 String annotUrl = annot.getUri(); |
3 | 304 String annotId = encodeJsonId(annotUrl); |
305 jo.put("id", annotId); | |
306 return jo; | |
307 } catch (JSONException e) { | |
61 | 308 logger.error("Unable to create AnnotatorJSON!", e); |
3 | 309 } |
310 return null; | |
311 } | |
312 | |
313 private JSONArray transformToRanges(List<String> xpointers) { | |
314 JSONArray ja = new JSONArray(); | |
315 Pattern rg = Pattern | |
4 | 316 .compile("xpointer\\(start-point\\(string-range\\(\"([^\"]*)\",([^,]*),1\\)\\)/range-to\\(end-point\\(string-range\\(\"([^\"]*)\",([^,]*),1\\)\\)\\)\\)"); |
317 Pattern rg1 = Pattern.compile("xpointer\\(start-point\\(string-range\\(\"([^\"]*)\",([^,]*),1\\)\\)\\)"); | |
3 | 318 try { |
319 for (String xpointer : xpointers) { | |
10 | 320 // String decoded = URLDecoder.decode(xpointer, "utf-8"); |
5 | 321 String decoded = xpointer; |
3 | 322 Matcher m = rg.matcher(decoded); |
323 if (m.find()) { | |
61 | 324 JSONObject jo = new JSONObject(); |
325 jo.put("start", m.group(1)); | |
326 jo.put("startOffset", m.group(2)); | |
327 jo.put("end", m.group(3)); | |
328 jo.put("endOffset", m.group(4)); | |
329 ja.put(jo); | |
3 | 330 } |
331 m = rg1.matcher(xpointer); | |
332 if (m.find()) { | |
333 JSONObject jo = new JSONObject(); | |
334 jo.put("start", m.group(1)); | |
335 jo.put("startOffset", m.group(2)); | |
336 ja.put(jo); | |
337 } | |
338 } | |
339 } catch (JSONException e) { | |
61 | 340 logger.error("Unable to transform to ranges!", e); |
3 | 341 } |
342 return ja; | |
343 } | |
344 | |
61 | 345 private JSONArray transformToShapes(List<String> xpointers) { |
3 | 346 JSONArray ja = new JSONArray(); |
61 | 347 Pattern rg = Pattern.compile("xywh=(\\w*):([\\d\\.]+),([\\d\\.]+),([\\d\\.]+),([\\d\\.]+)"); |
3 | 348 try { |
349 for (String xpointer : xpointers) { | |
5 | 350 String decoded = xpointer; |
3 | 351 Matcher m = rg.matcher(decoded); |
352 if (m.find()) { | |
61 | 353 String units = m.group(1); |
354 float x = getFloat(m.group(2)); | |
355 float y = getFloat(m.group(3)); | |
356 float width = getFloat(m.group(4)); | |
357 float height = getFloat(m.group(5)); | |
358 JSONObject shape = new JSONObject(); | |
359 JSONObject geom = new JSONObject(); | |
360 geom.put("units", units); | |
361 geom.put("x", x); | |
362 geom.put("y", y); | |
363 if (width == 0 || height == 0) { | |
364 shape.put("type", "point"); | |
365 shape.put("geometry", geom); | |
366 } else { | |
367 shape.put("type", "rectangle"); | |
368 geom.put("width", width); | |
369 geom.put("height", height); | |
370 shape.put("geometry", geom); | |
3 | 371 } |
61 | 372 ja.put(shape); |
3 | 373 } |
374 } | |
375 } catch (JSONException e) { | |
61 | 376 logger.error("Unable to transform to shapes!", e); |
3 | 377 } |
378 return ja; | |
379 } | |
380 | |
61 | 381 protected String parseShape(JSONObject shape) throws JSONException { |
382 String fragment = null; | |
383 String type = shape.getString("type"); | |
384 JSONObject geom = shape.getJSONObject("geometry"); | |
385 if (type.equalsIgnoreCase("point")) { | |
386 String x = geom.getString("x"); | |
387 String y = geom.getString("y"); | |
388 fragment = String.format("xywh=fraction:%s,%s,0,0", x, y); | |
389 } else if (type.equalsIgnoreCase("point")) { | |
390 String x = geom.getString("x"); | |
391 String y = geom.getString("y"); | |
392 String width = shape.getString("width"); | |
393 String height = shape.getString("height"); | |
394 fragment = String.format("xywh=fraction:%s,%s,%s,%s", x, y, width, height); | |
395 } else { | |
396 logger.error("Unable to parse this shape: " + shape); | |
397 } | |
398 return fragment; | |
399 } | |
400 | |
5 | 401 protected String parseArea(JSONObject area) throws JSONException { |
4 | 402 String x = area.getString("x"); |
403 String y = area.getString("y"); | |
404 String width = "0"; | |
405 String height = "0"; | |
406 if (area.has("width")) { | |
407 width = area.getString("width"); | |
408 height = area.getString("height"); | |
409 } | |
5 | 410 String fragment = String.format("xywh=fraction:%s,%s,%s,%s", x, y, width, height); |
4 | 411 return fragment; |
412 } | |
413 | |
5 | 414 protected String parseRange(JSONObject range) throws JSONException { |
4 | 415 String start = range.getString("start"); |
416 String end = range.getString("end"); | |
417 String startOffset = range.getString("startOffset"); | |
418 String endOffset = range.getString("endOffset"); | |
419 | |
5 | 420 String fragment = String.format( |
4 | 421 "xpointer(start-point(string-range(\"%s\",%s,1))/range-to(end-point(string-range(\"%s\",%s,1))))", start, |
5 | 422 startOffset, end, endOffset); |
4 | 423 return fragment; |
424 } | |
425 | |
3 | 426 /** |
5 | 427 * Creates an Annotation object with data from JSON. |
3 | 428 * |
4 | 429 * uses the specification from the annotator project: {@link https |
430 * ://github.com/okfn/annotator/wiki/Annotation-format} | |
3 | 431 * |
4 | 432 * The username will be transformed to an URI if not given already as URI, |
433 * if not it will set to the MPIWG namespace defined in | |
3 | 434 * de.mpiwg.itgroup.annotationManager.Constants.NS |
435 * | |
436 * @param jo | |
437 * @return | |
438 * @throws JSONException | |
4 | 439 * @throws UnsupportedEncodingException |
3 | 440 */ |
4 | 441 public Annotation createAnnotation(JSONObject jo, Representation entity) throws JSONException, UnsupportedEncodingException { |
3 | 442 return updateAnnotation(new Annotation(), jo, entity); |
443 } | |
444 | |
5 | 445 /** |
446 * Updates an Annotation object with data from JSON. | |
447 * | |
448 * uses the specification from the annotator project: {@link https | |
449 * ://github.com/okfn/annotator/wiki/Annotation-format} | |
450 * | |
451 * The username will be transformed to an URI if not given already as URI, | |
452 * if not it will set to the MPIWG namespace defined in | |
453 * de.mpiwg.itgroup.annotationManager.Constants.NS | |
454 * | |
455 * @param annot | |
456 * @param jo | |
457 * @return | |
458 * @throws JSONException | |
459 * @throws UnsupportedEncodingException | |
460 */ | |
4 | 461 public Annotation updateAnnotation(Annotation annot, JSONObject jo, Representation entity) throws JSONException, |
462 UnsupportedEncodingException { | |
16 | 463 /* |
464 * target uri | |
465 */ | |
3 | 466 if (jo.has("uri")) { |
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467 annot.setTarget(new Target(jo.getString("uri"))); |
3 | 468 } |
16 | 469 /* |
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470 * resource uri |
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471 */ |
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472 if (jo.has("resource")) { |
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473 annot.setResource(new Resource(jo.getString("resource"))); |
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474 } |
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475 /* |
16 | 476 * annotation text |
477 */ | |
3 | 478 if (jo.has("text")) { |
4 | 479 annot.setBodyText(jo.getString("text")); |
3 | 480 } |
16 | 481 /* |
482 * check authentication | |
483 */ | |
3 | 484 String authUser = checkAuthToken(entity); |
485 if (authUser == null) { | |
4 | 486 /* |
487 * // try http auth User httpUser = getHttpAuthUser(entity); if | |
488 * (httpUser == null) { | |
489 */ | |
490 setStatus(Status.CLIENT_ERROR_FORBIDDEN); | |
491 return null; | |
492 /* | |
493 * } authUser = httpUser.getIdentifier(); | |
494 */ | |
3 | 495 } |
16 | 496 /* |
497 * get or create creator object | |
498 */ | |
9 | 499 Actor creator = annot.getCreator(); |
500 if (creator == null) { | |
10 | 501 creator = new Person(); |
9 | 502 annot.setCreator(creator); |
503 } | |
3 | 504 // username not required, if no username given authuser will be used |
505 String username = null; | |
10 | 506 String userUri = creator.getUri(); |
3 | 507 if (jo.has("user")) { |
508 if (jo.get("user") instanceof String) { | |
509 // user is just a String | |
510 username = jo.getString("user"); | |
10 | 511 creator.setId(username); |
3 | 512 // TODO: what if username and authUser are different? |
513 } else { | |
514 // user is an object | |
515 JSONObject user = jo.getJSONObject("user"); | |
516 if (user.has("id")) { | |
10 | 517 String id = user.getString("id"); |
518 creator.setId(id); | |
519 username = id; | |
3 | 520 } |
521 if (user.has("uri")) { | |
522 userUri = user.getString("uri"); | |
523 } | |
524 } | |
525 } | |
526 if (username == null) { | |
527 username = authUser; | |
528 } | |
5 | 529 // try to get full name |
9 | 530 if (creator.getName() == null && username != null) { |
18 | 531 BaseRestlet restServer = (BaseRestlet) getApplication(); |
5 | 532 String fullName = restServer.getFullNameFromLdap(username); |
9 | 533 creator.setName(fullName); |
5 | 534 } |
535 // userUri should be a URI, if not it will set to the MPIWG namespace | |
3 | 536 if (userUri == null) { |
537 if (username.startsWith("http")) { | |
538 userUri = username; | |
539 } else { | |
58 | 540 userUri = BaseRestlet.PERSONS_URI_PREFIX + username; |
3 | 541 } |
542 } | |
543 // TODO: should we overwrite the creator? | |
9 | 544 if (creator.getUri() == null) { |
545 creator.setUri(userUri); | |
5 | 546 } |
16 | 547 /* |
548 * creation date | |
549 */ | |
5 | 550 if (annot.getCreated() == null) { |
551 // set creation date | |
552 SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'"); | |
553 String ct = format.format(Calendar.getInstance().getTime()); | |
554 annot.setCreated(ct); | |
555 } | |
3 | 556 |
16 | 557 /* |
61 | 558 * create fragment from the first range/area |
16 | 559 */ |
52 | 560 try { |
561 if (jo.has("ranges")) { | |
562 JSONObject ranges = jo.getJSONArray("ranges").getJSONObject(0); | |
563 annot.setFragmentType(FragmentTypes.XPOINTER); | |
564 String fragment = parseRange(ranges); | |
565 annot.setTargetFragment(fragment); | |
566 } | |
567 } catch (JSONException e) { | |
568 // nothing to do | |
3 | 569 } |
52 | 570 try { |
61 | 571 if (jo.has("shapes")) { |
572 JSONObject shapes = jo.getJSONArray("shapes").getJSONObject(0); | |
573 annot.setFragmentType(FragmentTypes.AREA); | |
574 String fragment = parseShape(shapes); | |
575 annot.setTargetFragment(fragment); | |
576 } | |
577 } catch (JSONException e) { | |
578 // nothing to do | |
579 } | |
580 // deprecated areas type | |
581 try { | |
52 | 582 if (jo.has("areas")) { |
583 JSONObject area = jo.getJSONArray("areas").getJSONObject(0); | |
584 annot.setFragmentType(FragmentTypes.AREA); | |
585 String fragment = parseArea(area); | |
586 annot.setTargetFragment(fragment); | |
587 } | |
588 } catch (JSONException e) { | |
589 // nothing to do | |
3 | 590 } |
10 | 591 |
16 | 592 /* |
593 * permissions | |
594 */ | |
10 | 595 if (jo.has("permissions")) { |
596 JSONObject permissions = jo.getJSONObject("permissions"); | |
597 if (permissions.has("admin")) { | |
598 JSONArray perms = permissions.getJSONArray("admin"); | |
599 Actor actor = getActorFromPermissions(perms); | |
600 annot.setAdminPermission(actor); | |
601 } | |
602 if (permissions.has("delete")) { | |
603 JSONArray perms = permissions.getJSONArray("delete"); | |
604 Actor actor = getActorFromPermissions(perms); | |
605 annot.setDeletePermission(actor); | |
606 } | |
607 if (permissions.has("update")) { | |
608 JSONArray perms = permissions.getJSONArray("update"); | |
609 Actor actor = getActorFromPermissions(perms); | |
610 annot.setUpdatePermission(actor); | |
611 } | |
612 if (permissions.has("read")) { | |
613 JSONArray perms = permissions.getJSONArray("read"); | |
614 Actor actor = getActorFromPermissions(perms); | |
615 annot.setReadPermission(actor); | |
616 } | |
617 } | |
618 | |
16 | 619 /* |
620 * tags | |
621 */ | |
622 if (jo.has("tags")) { | |
623 HashSet<String> tagset = new HashSet<String>(); | |
624 JSONArray tags = jo.getJSONArray("tags"); | |
625 for (int i = 0; i < tags.length(); ++i) { | |
626 tagset.add(tags.getString(i)); | |
627 } | |
628 annot.setTags(tagset); | |
629 } | |
630 | |
4 | 631 return annot; |
3 | 632 } |
633 | |
61 | 634 @SuppressWarnings("unused") |
635 // i in for loop | |
10 | 636 protected Actor getActorFromPermissions(JSONArray perms) throws JSONException { |
637 Actor actor = null; | |
638 for (int i = 0; i < perms.length(); ++i) { | |
639 String perm = perms.getString(i); | |
640 if (perm.toLowerCase().startsWith("group:")) { | |
641 String groupId = perm.substring(6); | |
642 actor = new Group(groupId); | |
643 } else { | |
644 actor = new Person(perm); | |
645 } | |
646 // we just take the first one | |
647 break; | |
648 } | |
649 return actor; | |
650 } | |
651 | |
61 | 652 public float getFloat(String s) { |
653 try { | |
654 return Float.parseFloat(s); | |
655 } catch (NumberFormatException e) { | |
656 } | |
657 return 0f; | |
658 } | |
3 | 659 } |