bundles/org.simantics.graph/src/org/simantics/graph/representation/TransferableGraphUtils.java

   1 package org.simantics.graph.representation;
   2
   3 import java.util.ArrayList;
   4 import java.util.Collection;
   5 import java.util.HashMap;
   6 import java.util.Map;
   7 import java.util.TreeMap;
   8
   9 import org.simantics.databoard.Bindings;
  10 import org.simantics.databoard.adapter.AdaptException;
  11 import org.simantics.databoard.util.URIStringUtils;
  12
  13 import gnu.trove.list.array.TIntArrayList;
  14 import gnu.trove.map.TIntObjectMap;
  15 import gnu.trove.map.hash.TIntObjectHashMap;
  16
  17 public class TransferableGraphUtils {
  18
  19     public static Collection<Identity> getRoots(TransferableGraph1 tg) {
  20
  21         ArrayList<Identity> result = new ArrayList<Identity>();
  22         for(Identity id : tg.identities) {
  23             if(id.definition instanceof Root) result.add(id);
  24         }
  25         return result;
  26
  27     }
  28
  29     public static Identity findRootWithName(TransferableGraph1 tg, String name) {
  30
  31         for(Identity id : tg.identities) {
  32             if(id.definition instanceof Root) {
  33                 Root ext = (Root)id.definition;
  34                 if(ext.name.equals(name)) return id;
  35             }
  36         }
  37         return null;
  38
  39     }
  40
  41     public static Identity findExternalWithName(TransferableGraph1 tg, String name) {
  42
  43         for(Identity id : tg.identities) {
  44             if(id.definition instanceof External) {
  45                 External ext = (External)id.definition;
  46                 if(ext.name.equals(name)) return id;
  47             }
  48         }
  49         return null;
  50
  51     }
  52
  53     public static Identity findExternalWithNameAndParent(TransferableGraph1 tg, int parent, String name) {
  54
  55         for(Identity id : tg.identities) {
  56             if(id.definition instanceof External) {
  57                 External ext = (External)id.definition;
  58                 if(ext.name.equals(name) && ext.parent == parent) return id;
  59             }
  60         }
  61         return null;
  62
  63     }
  64
  65     public static Identity findExternal(TransferableGraph1 tg, String uri) {
  66
  67         Identity identity = findExternalWithName(tg, "http:/");
  68         if(identity == null) identity = findExternalWithName(tg, "");
  69         if(identity == null) identity = findRootWithName(tg, "");
  70         if("http:/".equals(uri)) return identity;
  71         String[] tokens = uri.substring("http://".length()).split("/");
  72         for(String token : tokens) {
  73             identity = findExternalWithNameAndParent(tg, identity.resource, URIStringUtils.unescape(token));
  74             if (identity == null) {
  75                 return null;
  76             }
  77         }
  78         return identity;
  79
  80     }
  81
  82     /**
  83      * Provided a tg and a resource uri, returns the identity of the tg if the uri_ matches the tg exactly
  84      * @param tg
  85      * @param uri_
  86      * @return
  87      */
  88     public static Identity getIdentity2(TransferableGraph1 tg, String uri_) {
  89         Collection<Identity> identities = TransferableGraphUtils.getRoots(tg);
  90         for (Identity i : identities) {
  91             Identity id = getIdentity2(tg, uri_, i);
  92             if (id != null) {
  93                 return id;
  94             }
  95         }
  96         return null;
  97     }
  98
  99     /**
 100      *
 101      * @param tg
 102      * @param uri_
 103      * @param id
 104      * @return
 105      */
 106     public static Identity getIdentity2(TransferableGraph1 tg, String uri_, Identity id) {
 107         String uri = TransferableGraphUtils.getURI(tg, id.resource);
 108
 109         if (uri_.equals(uri)) {
 110             return id;
 111         }
 112
 113         if (uri_.startsWith(uri)) {
 114             Collection<Identity> childIdentitiesOfRoot = TransferableGraphUtils.getChildren2(tg, id);
 115             for (Identity i2 : childIdentitiesOfRoot) {
 116                 Identity id2 = getIdentity2(tg, uri_, i2);
 117                 if (id2 != null) {
 118                     return id2;
 119                 }
 120             }
 121         }
 122
 123         return null;
 124     }
 125
 126     public static Identity getIdentity(TransferableGraph1 tg, int resource) {
 127         for(Identity id : tg.identities) {
 128             if(id.resource == resource) return id;
 129         }
 130         return null;
 131     }
 132
 133     public static TIntArrayList getStatements(TransferableGraph1 tg, int resource) {
 134         TIntArrayList result = new TIntArrayList();
 135         for(int i=0;i<tg.statements.length;i+=4) {
 136             if(tg.statements[i] == resource) {
 137                 result.add(tg.statements[i+1]);
 138                 result.add(tg.statements[i+3]);
 139             }
 140         }
 141         return result;
 142     }
 143
 144     public static Collection<Identity> getChildren2(TransferableGraph1 tg, Identity parent) {
 145         return getChildren2(tg, parent.resource);
 146     }
 147
 148     public static Collection<Identity> getChildren2(TransferableGraph1 tg, int parentResource) {
 149         TreeMap<String, Identity> result = new TreeMap<>();
 150         for (Identity id : tg.identities) {
 151             if (id.definition instanceof Internal) {
 152                 Internal internal = (Internal) id.definition;
 153                 if (internal.parent == parentResource)
 154                     result.put(internal.name, id);
 155             }
 156         }
 157         Identity consistsOf = findExternal(tg, "http://www.simantics.org/Layer0-1.1/ConsistsOf");
 158         Identity hasName = findExternal(tg, "http://www.simantics.org/Layer0-1.1/HasName");
 159         for (int i = 0; i < tg.statements.length; i += 4) {
 160             if (tg.statements[i] == parentResource) {
 161                 if (tg.statements[i + 1] == consistsOf.resource) {
 162                     Identity identity = getIdentity(tg, tg.statements[i + 3]);
 163                     if (identity != null) {
 164                         if (identity.definition instanceof Internal) {
 165                             Internal internal = (Internal) identity.definition;
 166                             result.put(internal.name, identity);
 167                         }
 168                     } else {
 169                         int possibleNameResource = getPossibleObject2(tg, tg.statements[i + 3], hasName);
 170                         if (possibleNameResource != NOT_FOUND) {
 171                             Value value = findValue(tg, possibleNameResource);
 172                             if (value != null) {
 173                                 try {
 174                                     String name = (String) value.value.getValue(Bindings.STRING);
 175                                     result.put(name, new Identity(tg.statements[i + 3], new Internal(tg.statements[i], name)));
 176                                 } catch (AdaptException e) {
 177                                     e.printStackTrace();
 178                                 }
 179                             }
 180                         }
 181                     }
 182                 }
 183             }
 184         }
 185         return result.values();
 186     }
 187
 188     /**
 189      * This implementation is no longer advised to use because it returns 0 as
 190      * NOT_FOUND which is in fact a valid ID for resource in graph
 191      */
 192     @Deprecated
 193     public static Collection<Identity> getChildren(TransferableGraph1 tg, Identity parent) {
 194         TreeMap<String,Identity> result = new TreeMap<>();
 195         for(Identity id : tg.identities) {
 196             if(id.definition instanceof Internal) {
 197                 Internal internal = (Internal)id.definition;
 198                 if(internal.parent == parent.resource) result.put(internal.name, id);
 199             }
 200         }
 201         Identity consistsOf = findExternal(tg, "http://www.simantics.org/Layer0-1.1/ConsistsOf");
 202         Identity hasName = findExternal(tg, "http://www.simantics.org/Layer0-1.1/HasName");
 203         for(int i=0;i<tg.statements.length;i+=4) {
 204             if(tg.statements[i] == parent.resource) {
 205                 if(tg.statements[i+1] == consistsOf.resource) {
 206                     Identity identity = getIdentity(tg, tg.statements[i+3]);
 207                     if(identity != null) {
 208                         if(identity.definition instanceof Internal) {
 209                             Internal internal = (Internal)identity.definition;
 210                             result.put(internal.name, identity);
 211                         }
 212                     } else {
 213                         int possibleNameResource = getPossibleObject(tg, tg.statements[i+3], hasName);
 214                         if(possibleNameResource != 0) {
 215                             Value value = findValue(tg, possibleNameResource);
 216                             if(value != null) {
 217                                 try {
 218                                     String name = (String)value.value.getValue(Bindings.STRING);
 219                                     result.put(name, new Identity(tg.statements[i+3], new Internal(tg.statements[i], name)));
 220                                 } catch (AdaptException e) {
 221                                     e.printStackTrace();
 222                                 }
 223                             }
 224                         }
 225                     }
 226                 }
 227             }
 228         }
 229         return result.values();
 230     }
 231
 232     public static TIntArrayList getObjects(TransferableGraph1 tg, int subject, Identity predicate) {
 233         TIntArrayList result = new TIntArrayList();
 234         for(int i=0;i<tg.statements.length;i+=4) {
 235             if(tg.statements[i] == subject && tg.statements[i+1] == predicate.resource) {
 236                 result.add(tg.statements[i+3]);
 237             }
 238         }
 239         return result;
 240     }
 241
 242     /**
 243      * This implementation is no longer advised to use because it returns 0 as
 244      * NOT_FOUND which is in fact a valid ID for resource in graph
 245      */
 246     @Deprecated
 247     public static int getPossibleObject(TransferableGraph1 tg, int subject, Identity predicate) {
 248         int result = 0;
 249         for(int i=0;i<tg.statements.length;i+=4) {
 250             if(tg.statements[i] == subject && tg.statements[i+1] == predicate.resource) {
 251                 if(result != 0 && tg.statements[i+3] != result) return 0;
 252                 result = tg.statements[i+3];
 253             }
 254         }
 255         return result;
 256     }
 257
 258     public static final int NOT_FOUND = -2;
 259
 260     public static int getPossibleObject2(TransferableGraph1 tg, int subject, Identity predicate) {
 261         int result = NOT_FOUND;
 262         for(int i=0;i<tg.statements.length;i+=4) {
 263             if(tg.statements[i] == subject && tg.statements[i+1] == predicate.resource) {
 264                 if(result != NOT_FOUND && tg.statements[i+3] != result)
 265                     return NOT_FOUND;
 266                 result = tg.statements[i+3];
 267             }
 268         }
 269         return result;
 270     }
 271
 272     /**
 273      * @return 0 for presenting not found which is BAD
 274      * @see getPossibleObject2
 275      */
 276     @Deprecated
 277     public static int getPossibleObject(TransferableGraph1 tg, Identity subject, String predicate) {
 278         Identity p = findExternal(tg, predicate);
 279         if(p == null) return 0;
 280         return getPossibleObject(tg, subject.resource, p);
 281     }
 282
 283     public static int getPossibleObject2(TransferableGraph1 tg, Identity subject, String predicate) {
 284         Identity p = findExternal(tg, predicate);
 285         if (p == null)
 286             return NOT_FOUND;
 287         return getPossibleObject2(tg, subject.resource, p);
 288     }
 289
 290     public static Map<Identity, String> getNames(TransferableGraph1 tg, Collection<Identity> ids) {
 291         Map<Identity, String> result = new HashMap<Identity, String>();
 292         for(Identity id : ids) {
 293             if(id.definition instanceof Internal) {
 294                 Internal internal = (Internal)id.definition;
 295                 result.put(id, internal.name);
 296             }
 297         }
 298         return result;
 299     }
 300
 301     public static String getName(TransferableGraph1 tg, Identity id) {
 302         return getName(id);
 303     }
 304
 305     public static String getName(Identity id) {
 306         if(id.definition instanceof Internal) {
 307             Internal internal = (Internal)id.definition;
 308             return internal.name;
 309         } else if(id.definition instanceof External) {
 310             External external = (External)id.definition;
 311             return external.name;
 312         } else if(id.definition instanceof Root) {
 313             Root root = (Root)id.definition;
 314             return root.name;
 315         } else  {
 316             Optional optional = (Optional)id.definition;
 317             return optional.name;
 318         }
 319     }
 320
 321     public static String getRootType(Identity id) {
 322         if(id.definition instanceof Root) {
 323             Root root = (Root)id.definition;
 324             return root.type;
 325         } else  {
 326             throw new IllegalArgumentException("Expected root, got " + id);
 327         }
 328     }
 329
 330     public static Value findValue(TransferableGraph1 tg, int subject) {
 331         for(Value v : tg.values) {
 332             if(v.resource == subject) return v;
 333         }
 334         return null;
 335     }
 336
 337     public static String getURI(TransferableGraph1 tg, int id) {
 338         return getURI(tg.identities, id);
 339     }
 340
 341     public static String getURI(Identity[] identities, int id) {
 342         for(Identity identity : identities) {
 343             if(identity.resource == id) {
 344                 IdentityDefinition definition = identity.definition;
 345                 if(definition instanceof External) {
 346                     External def = (External)definition;
 347                     if(def.parent == -1) return "http:/";
 348                     else return getURI(identities, def.parent) + "/" + URIStringUtils.escape(def.name);
 349                 } else if(definition instanceof Root) {
 350                     Root def = (Root)definition;
 351                     if(def.name.isEmpty()) return "http:/";
 352                     return def.name;
 353                 } else if (definition instanceof Internal) {
 354                     Internal def = (Internal)definition;
 355                     return getURI(identities, def.parent) + "/" + URIStringUtils.escape(def.name);
 356                 } else {
 357                     return "";
 358                 }
 359             }
 360         }
 361         return "<internal reference " + id + ">:";
 362     }
 363
 364     public static TIntObjectMap<Identity> mapIdentities(TransferableGraph1 tg) {
 365         return mapIdentities(tg.identities);
 366     }
 367
 368     public static TIntObjectMap<Identity> mapIdentities(Identity[] identities) {
 369         // Integer.MIN_VALUE cannot be the value of Identity.resource
 370         TIntObjectMap<Identity> map = new TIntObjectHashMap<>(identities.length, 0.5f, Integer.MIN_VALUE);
 371         for (Identity id : identities)
 372             map.put(id.resource, id);
 373         return map;
 374     }
 375
 376     public static String getURI(int resourceCount, TIntObjectMap<Identity> identities, int id) {
 377         Identity identity = identities.get(id);
 378         if(identity != null) {
 379             IdentityDefinition definition = identity.definition;
 380             if(definition instanceof External) {
 381                 External def = (External)definition;
 382                 if(def.parent == -1) return "http:/";
 383                 else return getURI(resourceCount, identities, def.parent) + "/" + URIStringUtils.escape(def.name);
 384             } else if(definition instanceof Root) {
 385                 Root def = (Root)definition;
 386                 if(def.name.isEmpty()) return "http:/";
 387                 return def.name;
 388             } else if (definition instanceof Internal) {
 389                 Internal def = (Internal)definition;
 390                 return getURI(resourceCount, identities, def.parent) + "/" + URIStringUtils.escape(def.name);
 391             } else {
 392                 return "";
 393             }
 394         }
 395         return "<internal reference " + id + ">:";
 396     }
 397
 398 }