Mercurial > hg > AnnotationManagerN4J
annotate src/main/java/de/mpiwg/itgroup/annotations/restlet/AnnotatorResourceImpl.java @ 48:0e00bf8e27fb
targets and resources of Annotation object are objects now.
| author | casties |
|---|---|
| date | Wed, 26 Sep 2012 18:10:47 +0200 |
| parents | 03e0f7574224 |
| children | a52c597075dc |
| rev | line source |
|---|---|
| 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; |
| 19 | 40 import de.mpiwg.itgroup.annotations.NS; |
| 10 | 41 import de.mpiwg.itgroup.annotations.Person; |
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42 import de.mpiwg.itgroup.annotations.Resource; |
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43 import de.mpiwg.itgroup.annotations.Target; |
| 4 | 44 import de.mpiwg.itgroup.annotations.neo4j.AnnotationStore; |
| 3 | 45 |
| 46 /** | |
| 47 * Base class for Annotator resource classes. | |
| 48 * | |
| 49 * @author dwinter, casties | |
| 50 * | |
| 51 */ | |
| 52 public abstract class AnnotatorResourceImpl extends ServerResource { | |
| 53 | |
| 4 | 54 protected static Logger logger = Logger.getLogger(AnnotatorResourceImpl.class); |
| 55 | |
| 56 private AnnotationStore store; | |
| 3 | 57 |
| 58 protected String getAllowedMethodsForHeader() { | |
| 59 return "OPTIONS,GET,POST"; | |
| 60 } | |
| 61 | |
| 4 | 62 protected AnnotationStore getAnnotationStore() { |
| 63 if (store == null) { | |
| 19 | 64 store = ((BaseRestlet) getApplication()).getAnnotationStore(); |
| 4 | 65 } |
| 66 return store; | |
| 67 } | |
| 68 | |
| 3 | 69 public String encodeJsonId(String id) { |
| 22 | 70 if (id == null) return null; |
| 3 | 71 try { |
| 72 return Base64.encodeBase64URLSafeString(id.getBytes("UTF-8")); | |
| 73 } catch (UnsupportedEncodingException e) { | |
| 74 return null; | |
| 75 } | |
| 76 } | |
| 77 | |
| 78 public String decodeJsonId(String id) { | |
| 22 | 79 if (id == null) return null; |
| 3 | 80 try { |
| 81 return new String(Base64.decodeBase64(id), "UTF-8"); | |
| 82 } catch (UnsupportedEncodingException e) { | |
| 83 return null; | |
| 84 } | |
| 85 } | |
| 86 | |
| 87 /** | |
| 88 * Handle options request to allow CORS for AJAX. | |
| 89 * | |
| 90 * @param entity | |
| 91 */ | |
| 92 @Options | |
| 93 public void doOptions(Representation entity) { | |
| 94 logger.debug("AnnotatorResourceImpl doOptions!"); | |
| 95 setCorsHeaders(); | |
| 96 } | |
| 97 | |
| 98 /** | |
| 99 * set headers to allow CORS for AJAX. | |
| 100 */ | |
| 101 protected void setCorsHeaders() { | |
| 102 Form responseHeaders = (Form) getResponse().getAttributes().get("org.restlet.http.headers"); | |
| 103 if (responseHeaders == null) { | |
| 104 responseHeaders = new Form(); | |
| 105 getResponse().getAttributes().put("org.restlet.http.headers", responseHeaders); | |
| 106 } | |
| 107 responseHeaders.add("Access-Control-Allow-Methods", getAllowedMethodsForHeader()); | |
| 108 // echo back Origin and Request-Headers | |
| 109 Form requestHeaders = (Form) getRequest().getAttributes().get("org.restlet.http.headers"); | |
| 110 String origin = requestHeaders.getFirstValue("Origin", true); | |
| 111 if (origin == null) { | |
| 112 responseHeaders.add("Access-Control-Allow-Origin", "*"); | |
| 113 } else { | |
| 114 responseHeaders.add("Access-Control-Allow-Origin", origin); | |
| 115 } | |
| 116 String allowHeaders = requestHeaders.getFirstValue("Access-Control-Request-Headers", true); | |
| 117 if (allowHeaders != null) { | |
| 118 responseHeaders.add("Access-Control-Allow-Headers", allowHeaders); | |
| 119 } | |
| 120 responseHeaders.add("Access-Control-Allow-Credentials", "true"); | |
| 121 responseHeaders.add("Access-Control-Max-Age", "60"); | |
| 122 } | |
| 123 | |
| 124 /** | |
| 125 * returns if authentication information from headers is valid. | |
| 126 * | |
| 127 * @param entity | |
| 128 * @return | |
| 129 */ | |
| 130 public boolean isAuthenticated(Representation entity) { | |
| 131 return (checkAuthToken(entity) != null); | |
| 132 } | |
| 133 | |
| 134 /** | |
| 4 | 135 * checks Annotator Auth plugin authentication information from headers. |
| 136 * returns userId if successful. | |
| 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) return null; |
| 3 | 145 // decode token first to get consumer key |
| 146 JsonToken token = new JsonTokenParser(null, null).deserialize(authToken); | |
| 147 String userId = token.getParamAsPrimitive("userId").getAsString(); | |
| 148 String consumerKey = token.getParamAsPrimitive("consumerKey").getAsString(); | |
| 149 // get stored consumer secret for key | |
| 18 | 150 BaseRestlet restServer = (BaseRestlet) getApplication(); |
| 3 | 151 String consumerSecret = restServer.getConsumerSecret(consumerKey); |
| 152 logger.debug("requested consumer key=" + consumerKey + " secret=" + consumerSecret); | |
| 153 if (consumerSecret == null) { | |
| 154 return null; | |
| 155 } | |
| 156 // logger.debug(String.format("token=%s tokenString=%s signatureAlgorithm=%s",token,token.getTokenString(),token.getSignatureAlgorithm())); | |
| 157 try { | |
| 158 List<Verifier> verifiers = new ArrayList<Verifier>(); | |
| 159 // we only do HS256 yet | |
| 160 verifiers.add(new HmacSHA256Verifier(consumerSecret.getBytes("UTF-8"))); | |
| 161 // verify token signature(should really be static...) | |
| 162 new JsonTokenParser(new SystemClock(), null, (Checker[]) null).verify(token, verifiers); | |
| 163 } catch (SignatureException e) { | |
| 164 // TODO Auto-generated catch block | |
| 165 e.printStackTrace(); | |
| 166 } catch (InvalidKeyException e) { | |
| 167 // TODO Auto-generated catch block | |
| 168 e.printStackTrace(); | |
| 169 } catch (UnsupportedEncodingException e) { | |
| 170 // TODO Auto-generated catch block | |
| 171 e.printStackTrace(); | |
| 172 } | |
| 173 // must be ok then | |
| 174 logger.debug("auth OK! user=" + userId); | |
| 175 return userId; | |
| 176 } | |
| 177 | |
| 178 /** | |
| 179 * creates Annotator-JSON from an Annotation object. | |
| 180 * | |
| 181 * @param annot | |
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182 * @param forAnonymous TODO |
| 3 | 183 * @return |
| 184 */ | |
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185 public JSONObject createAnnotatorJson(Annotation annot, boolean forAnonymous) { |
| 5 | 186 // return user as a JSON object (otherwise just as string) |
| 3 | 187 boolean makeUserObject = true; |
| 188 JSONObject jo = new JSONObject(); | |
| 189 try { | |
| 4 | 190 jo.put("text", annot.getBodyText()); |
| 191 jo.put("uri", annot.getTargetBaseUri()); | |
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192 if (annot.getResourceUri() != null) { |
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193 jo.put("resource", annot.getResourceUri()); |
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194 } |
| 3 | 195 |
| 16 | 196 /* |
| 197 * user | |
| 198 */ | |
| 3 | 199 if (makeUserObject) { |
| 200 // create user object | |
| 201 JSONObject userObject = new JSONObject(); | |
| 10 | 202 Actor creator = annot.getCreator(); |
| 3 | 203 // save creator as uri |
| 10 | 204 userObject.put("uri", creator.getUri()); |
| 3 | 205 // make short user id |
| 10 | 206 String userId = creator.getIdString(); |
| 9 | 207 // set as id |
| 4 | 208 userObject.put("id", userId); |
| 3 | 209 // get full name |
| 10 | 210 String userName = creator.getName(); |
| 5 | 211 if (userName == null) { |
| 18 | 212 BaseRestlet restServer = (BaseRestlet) getApplication(); |
| 5 | 213 userName = restServer.getFullNameFromLdap(userId); |
| 214 } | |
| 3 | 215 userObject.put("name", userName); |
| 216 // save user object | |
| 217 jo.put("user", userObject); | |
| 218 } else { | |
| 219 // save user as string | |
| 4 | 220 jo.put("user", annot.getCreatorUri()); |
| 3 | 221 } |
| 222 | |
| 16 | 223 /* |
| 224 * ranges | |
| 225 */ | |
| 4 | 226 if (annot.getTargetFragment() != null) { |
| 3 | 227 // we only look at the first xpointer |
| 4 | 228 List<String> fragments = new ArrayList<String>(); |
| 229 fragments.add(annot.getTargetFragment()); | |
| 230 FragmentTypes xt = annot.getFragmentType(); | |
| 231 if (xt == FragmentTypes.XPOINTER) { | |
| 232 jo.put("ranges", transformToRanges(fragments)); | |
| 233 } else if (xt == FragmentTypes.AREA) { | |
| 234 jo.put("areas", transformToAreas(fragments)); | |
| 3 | 235 } |
| 236 } | |
| 10 | 237 |
| 16 | 238 /* |
| 239 * permissions | |
| 240 */ | |
| 10 | 241 JSONObject perms = new JSONObject(); |
| 242 jo.put("permissions", perms); | |
| 243 // admin | |
| 244 JSONArray adminPerms = new JSONArray(); | |
| 245 perms.put("admin", adminPerms); | |
| 246 Actor adminPerm = annot.getAdminPermission(); | |
| 247 if (adminPerm != null) { | |
| 248 adminPerms.put(adminPerm.getIdString()); | |
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249 } else if (forAnonymous) { |
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250 // set something because its not allowed for anonymous |
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251 adminPerms.put("not-you"); |
| 10 | 252 } |
| 253 // delete | |
| 254 JSONArray deletePerms = new JSONArray(); | |
| 255 perms.put("delete", deletePerms); | |
| 256 Actor deletePerm = annot.getDeletePermission(); | |
| 257 if (deletePerm != null) { | |
| 258 deletePerms.put(deletePerm.getIdString()); | |
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259 } else if (forAnonymous) { |
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260 // set something because its not allowed for anonymous |
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261 deletePerms.put("not-you"); |
| 10 | 262 } |
| 263 // update | |
| 264 JSONArray updatePerms = new JSONArray(); | |
| 265 perms.put("update", updatePerms); | |
| 266 Actor updatePerm = annot.getUpdatePermission(); | |
| 267 if (updatePerm != null) { | |
| 268 updatePerms.put(updatePerm.getIdString()); | |
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269 } else if (forAnonymous) { |
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270 // set something because its not allowed for anonymous |
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271 updatePerms.put("not-you"); |
| 10 | 272 } |
| 273 // read | |
| 274 JSONArray readPerms = new JSONArray(); | |
| 275 perms.put("read", readPerms); | |
| 276 Actor readPerm = annot.getReadPermission(); | |
| 277 if (readPerm != null) { | |
| 278 readPerms.put(readPerm.getIdString()); | |
| 279 } | |
| 280 | |
| 16 | 281 /* |
| 282 * tags | |
| 283 */ | |
| 284 Set<String> tagset = annot.getTags(); | |
| 285 if (tagset != null) { | |
| 286 JSONArray tags = new JSONArray(); | |
| 287 jo.put("tags", tags); | |
| 288 for (String tag : tagset) { | |
| 289 tags.put(tag); | |
| 290 } | |
| 291 } | |
| 292 | |
| 293 /* | |
| 294 * id | |
| 295 */ | |
| 3 | 296 // encode Annotation URL (=id) in base64 |
| 4 | 297 String annotUrl = annot.getUri(); |
| 3 | 298 String annotId = encodeJsonId(annotUrl); |
| 299 jo.put("id", annotId); | |
| 300 return jo; | |
| 301 } catch (JSONException e) { | |
| 302 // TODO Auto-generated catch block | |
| 303 e.printStackTrace(); | |
| 304 } | |
| 305 return null; | |
| 306 } | |
| 307 | |
| 308 private JSONArray transformToRanges(List<String> xpointers) { | |
| 309 | |
| 310 JSONArray ja = new JSONArray(); | |
| 311 | |
| 312 Pattern rg = Pattern | |
| 4 | 313 .compile("xpointer\\(start-point\\(string-range\\(\"([^\"]*)\",([^,]*),1\\)\\)/range-to\\(end-point\\(string-range\\(\"([^\"]*)\",([^,]*),1\\)\\)\\)\\)"); |
| 314 Pattern rg1 = Pattern.compile("xpointer\\(start-point\\(string-range\\(\"([^\"]*)\",([^,]*),1\\)\\)\\)"); | |
| 3 | 315 |
| 316 try { | |
| 317 for (String xpointer : xpointers) { | |
| 10 | 318 // String decoded = URLDecoder.decode(xpointer, "utf-8"); |
| 5 | 319 String decoded = xpointer; |
| 3 | 320 Matcher m = rg.matcher(decoded); |
| 321 | |
| 322 if (m.find()) { | |
| 323 { | |
| 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); | |
| 330 } | |
| 331 } | |
| 332 m = rg1.matcher(xpointer); | |
| 333 if (m.find()) { | |
| 334 JSONObject jo = new JSONObject(); | |
| 335 jo.put("start", m.group(1)); | |
| 336 jo.put("startOffset", m.group(2)); | |
| 337 | |
| 338 ja.put(jo); | |
| 339 } | |
| 340 } | |
| 341 } catch (JSONException e) { | |
| 342 // TODO Auto-generated catch block | |
| 343 e.printStackTrace(); | |
| 344 } | |
| 345 return ja; | |
| 346 } | |
| 347 | |
| 348 private JSONArray transformToAreas(List<String> xpointers) { | |
| 349 | |
| 350 JSONArray ja = new JSONArray(); | |
| 351 | |
| 4 | 352 Pattern rg = Pattern.compile("xywh=(\\w*:)([\\d\\.]+),([\\d\\.]+),([\\d\\.]+),([\\d\\.]+)"); |
| 3 | 353 |
| 354 try { | |
| 355 for (String xpointer : xpointers) { | |
| 10 | 356 // String decoded = URLDecoder.decode(xpointer, "utf-8"); |
| 5 | 357 String decoded = xpointer; |
| 3 | 358 Matcher m = rg.matcher(decoded); |
| 359 | |
| 360 if (m.find()) { | |
| 361 { | |
| 362 JSONObject jo = new JSONObject(); | |
| 10 | 363 @SuppressWarnings("unused") |
| 3 | 364 String unit = m.group(1); |
| 365 jo.put("x", m.group(2)); | |
| 366 jo.put("y", m.group(3)); | |
| 367 jo.put("width", m.group(4)); | |
| 368 jo.put("height", m.group(5)); | |
| 369 ja.put(jo); | |
| 370 } | |
| 371 } | |
| 372 } | |
| 373 } catch (JSONException e) { | |
| 374 // TODO Auto-generated catch block | |
| 375 e.printStackTrace(); | |
| 376 } | |
| 377 return ja; | |
| 378 } | |
| 379 | |
| 5 | 380 protected String parseArea(JSONObject area) throws JSONException { |
| 4 | 381 String x = area.getString("x"); |
| 382 String y = area.getString("y"); | |
| 383 String width = "0"; | |
| 384 String height = "0"; | |
| 385 if (area.has("width")) { | |
| 386 width = area.getString("width"); | |
| 387 height = area.getString("height"); | |
| 388 } | |
| 5 | 389 String fragment = String.format("xywh=fraction:%s,%s,%s,%s", x, y, width, height); |
| 4 | 390 return fragment; |
| 391 } | |
| 392 | |
| 5 | 393 protected String parseRange(JSONObject range) throws JSONException { |
| 4 | 394 String start = range.getString("start"); |
| 395 String end = range.getString("end"); | |
| 396 String startOffset = range.getString("startOffset"); | |
| 397 String endOffset = range.getString("endOffset"); | |
| 398 | |
| 5 | 399 String fragment = String.format( |
| 4 | 400 "xpointer(start-point(string-range(\"%s\",%s,1))/range-to(end-point(string-range(\"%s\",%s,1))))", start, |
| 5 | 401 startOffset, end, endOffset); |
| 4 | 402 return fragment; |
| 403 } | |
| 404 | |
| 3 | 405 /** |
| 5 | 406 * Creates an Annotation object with data from JSON. |
| 3 | 407 * |
| 4 | 408 * uses the specification from the annotator project: {@link https |
| 409 * ://github.com/okfn/annotator/wiki/Annotation-format} | |
| 3 | 410 * |
| 4 | 411 * The username will be transformed to an URI if not given already as URI, |
| 412 * if not it will set to the MPIWG namespace defined in | |
| 3 | 413 * de.mpiwg.itgroup.annotationManager.Constants.NS |
| 414 * | |
| 415 * @param jo | |
| 416 * @return | |
| 417 * @throws JSONException | |
| 4 | 418 * @throws UnsupportedEncodingException |
| 3 | 419 */ |
| 4 | 420 public Annotation createAnnotation(JSONObject jo, Representation entity) throws JSONException, UnsupportedEncodingException { |
| 3 | 421 return updateAnnotation(new Annotation(), jo, entity); |
| 422 } | |
| 423 | |
| 5 | 424 /** |
| 425 * Updates an Annotation object with data from JSON. | |
| 426 * | |
| 427 * uses the specification from the annotator project: {@link https | |
| 428 * ://github.com/okfn/annotator/wiki/Annotation-format} | |
| 429 * | |
| 430 * The username will be transformed to an URI if not given already as URI, | |
| 431 * if not it will set to the MPIWG namespace defined in | |
| 432 * de.mpiwg.itgroup.annotationManager.Constants.NS | |
| 433 * | |
| 434 * @param annot | |
| 435 * @param jo | |
| 436 * @return | |
| 437 * @throws JSONException | |
| 438 * @throws UnsupportedEncodingException | |
| 439 */ | |
| 4 | 440 public Annotation updateAnnotation(Annotation annot, JSONObject jo, Representation entity) throws JSONException, |
| 441 UnsupportedEncodingException { | |
| 16 | 442 /* |
| 443 * target uri | |
| 444 */ | |
| 3 | 445 if (jo.has("uri")) { |
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446 annot.setTarget(new Target(jo.getString("uri"))); |
| 3 | 447 } |
| 16 | 448 /* |
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449 * resource uri |
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450 */ |
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451 if (jo.has("resource")) { |
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452 annot.setResource(new Resource(jo.getString("resource"))); |
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453 } |
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454 /* |
| 16 | 455 * annotation text |
| 456 */ | |
| 3 | 457 if (jo.has("text")) { |
| 4 | 458 annot.setBodyText(jo.getString("text")); |
| 3 | 459 } |
| 16 | 460 /* |
| 461 * check authentication | |
| 462 */ | |
| 3 | 463 String authUser = checkAuthToken(entity); |
| 464 if (authUser == null) { | |
| 4 | 465 /* |
| 466 * // try http auth User httpUser = getHttpAuthUser(entity); if | |
| 467 * (httpUser == null) { | |
| 468 */ | |
| 469 setStatus(Status.CLIENT_ERROR_FORBIDDEN); | |
| 470 return null; | |
| 471 /* | |
| 472 * } authUser = httpUser.getIdentifier(); | |
| 473 */ | |
| 3 | 474 } |
| 16 | 475 /* |
| 476 * get or create creator object | |
| 477 */ | |
| 9 | 478 Actor creator = annot.getCreator(); |
| 479 if (creator == null) { | |
| 10 | 480 creator = new Person(); |
| 9 | 481 annot.setCreator(creator); |
| 482 } | |
| 3 | 483 // username not required, if no username given authuser will be used |
| 484 String username = null; | |
| 10 | 485 String userUri = creator.getUri(); |
| 3 | 486 if (jo.has("user")) { |
| 487 if (jo.get("user") instanceof String) { | |
| 488 // user is just a String | |
| 489 username = jo.getString("user"); | |
| 10 | 490 creator.setId(username); |
| 3 | 491 // TODO: what if username and authUser are different? |
| 492 } else { | |
| 493 // user is an object | |
| 494 JSONObject user = jo.getJSONObject("user"); | |
| 495 if (user.has("id")) { | |
| 10 | 496 String id = user.getString("id"); |
| 497 creator.setId(id); | |
| 498 username = id; | |
| 3 | 499 } |
| 500 if (user.has("uri")) { | |
| 501 userUri = user.getString("uri"); | |
| 502 } | |
| 503 } | |
| 504 } | |
| 505 if (username == null) { | |
| 506 username = authUser; | |
| 507 } | |
| 5 | 508 // try to get full name |
| 9 | 509 if (creator.getName() == null && username != null) { |
| 18 | 510 BaseRestlet restServer = (BaseRestlet) getApplication(); |
| 5 | 511 String fullName = restServer.getFullNameFromLdap(username); |
| 9 | 512 creator.setName(fullName); |
| 5 | 513 } |
| 514 // userUri should be a URI, if not it will set to the MPIWG namespace | |
| 3 | 515 if (userUri == null) { |
| 516 if (username.startsWith("http")) { | |
| 517 userUri = username; | |
| 518 } else { | |
| 519 userUri = NS.MPIWG_PERSONS_URL + username; | |
| 520 } | |
| 521 } | |
| 522 // TODO: should we overwrite the creator? | |
| 9 | 523 if (creator.getUri() == null) { |
| 524 creator.setUri(userUri); | |
| 5 | 525 } |
| 16 | 526 /* |
| 527 * creation date | |
| 528 */ | |
| 5 | 529 if (annot.getCreated() == null) { |
| 530 // set creation date | |
| 531 SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'"); | |
| 532 String ct = format.format(Calendar.getInstance().getTime()); | |
| 533 annot.setCreated(ct); | |
| 534 } | |
| 3 | 535 |
| 16 | 536 /* |
| 537 * create xpointer from the first range/area | |
| 538 */ | |
| 3 | 539 if (jo.has("ranges")) { |
| 540 JSONObject ranges = jo.getJSONArray("ranges").getJSONObject(0); | |
| 4 | 541 annot.setFragmentType(FragmentTypes.XPOINTER); |
| 542 String fragment = parseRange(ranges); | |
| 543 annot.setTargetFragment(fragment); | |
| 3 | 544 } |
| 545 if (jo.has("areas")) { | |
| 546 JSONObject area = jo.getJSONArray("areas").getJSONObject(0); | |
| 4 | 547 annot.setFragmentType(FragmentTypes.AREA); |
| 548 String fragment = parseArea(area); | |
| 549 annot.setTargetFragment(fragment); | |
| 3 | 550 } |
| 10 | 551 |
| 16 | 552 /* |
| 553 * permissions | |
| 554 */ | |
| 10 | 555 if (jo.has("permissions")) { |
| 556 JSONObject permissions = jo.getJSONObject("permissions"); | |
| 557 if (permissions.has("admin")) { | |
| 558 JSONArray perms = permissions.getJSONArray("admin"); | |
| 559 Actor actor = getActorFromPermissions(perms); | |
| 560 annot.setAdminPermission(actor); | |
| 561 } | |
| 562 if (permissions.has("delete")) { | |
| 563 JSONArray perms = permissions.getJSONArray("delete"); | |
| 564 Actor actor = getActorFromPermissions(perms); | |
| 565 annot.setDeletePermission(actor); | |
| 566 } | |
| 567 if (permissions.has("update")) { | |
| 568 JSONArray perms = permissions.getJSONArray("update"); | |
| 569 Actor actor = getActorFromPermissions(perms); | |
| 570 annot.setUpdatePermission(actor); | |
| 571 } | |
| 572 if (permissions.has("read")) { | |
| 573 JSONArray perms = permissions.getJSONArray("read"); | |
| 574 Actor actor = getActorFromPermissions(perms); | |
| 575 annot.setReadPermission(actor); | |
| 576 } | |
| 577 } | |
| 578 | |
| 16 | 579 /* |
| 580 * tags | |
| 581 */ | |
| 582 if (jo.has("tags")) { | |
| 583 HashSet<String> tagset = new HashSet<String>(); | |
| 584 JSONArray tags = jo.getJSONArray("tags"); | |
| 585 for (int i = 0; i < tags.length(); ++i) { | |
| 586 tagset.add(tags.getString(i)); | |
| 587 } | |
| 588 annot.setTags(tagset); | |
| 589 } | |
| 590 | |
| 591 | |
| 4 | 592 return annot; |
| 3 | 593 } |
| 594 | |
| 15 | 595 @SuppressWarnings("unused") // i in for loop |
| 10 | 596 protected Actor getActorFromPermissions(JSONArray perms) throws JSONException { |
| 597 Actor actor = null; | |
| 598 for (int i = 0; i < perms.length(); ++i) { | |
| 599 String perm = perms.getString(i); | |
| 600 if (perm.toLowerCase().startsWith("group:")) { | |
| 601 String groupId = perm.substring(6); | |
| 602 actor = new Group(groupId); | |
| 603 } else { | |
| 604 actor = new Person(perm); | |
| 605 } | |
| 606 // we just take the first one | |
| 607 break; | |
| 608 } | |
| 609 return actor; | |
| 610 } | |
| 611 | |
| 3 | 612 } |