org.simantics.objmap2/src/org/simantics/objmap/structural/rules/domain/StructuralUtils.java

   1 package org.simantics.objmap.structural.rules.domain;\r
   2 \r
   3 import org.simantics.db.ReadGraph;\r
   4 import org.simantics.db.Resource;\r
   5 import org.simantics.db.WriteGraph;\r
   6 import org.simantics.db.exception.DatabaseException;\r
   7 import org.simantics.db.exception.NoSingleResultException;\r
   8 import org.simantics.layer0.Layer0;\r
   9 import org.simantics.objmap.structural.StructuralResource;\r
  10 import org.simantics.structural.stubs.StructuralResource2;\r
  11 \r
  12 public class StructuralUtils {\r
  13 \r
  14         \r
  15         public static boolean isStructuralInstance(ReadGraph g, Resource r) throws DatabaseException {\r
  16                 StructuralResource2 sr = StructuralResource2.getInstance(g);\r
  17                  if (g.isInstanceOf(r, sr.Component)) {\r
  18                          Resource type = g.getSingleType(r);\r
  19                          return g.isInstanceOf(type, sr.Component);\r
  20                  }\r
  21                  return false;\r
  22                 \r
  23         }\r
  24         \r
  25         public static Resource getContainingInstance(StructuralResource element) {\r
  26                 if (!element.isStructural())\r
  27                         return null;\r
  28                 Resource instance = element.getContext().get(element.getContext().size()-1);\r
  29                 return instance;\r
  30         }\r
  31         \r
  32         public static Resource getPublishedRelation(ReadGraph g, StructuralResource element, Resource relation) throws DatabaseException{\r
  33                 Resource instance = getContainingInstance(element);\r
  34                 if (instance == null)\r
  35                         return null;\r
  36                 \r
  37                 Layer0 l0 = Layer0.getInstance(g);\r
  38                 StructuralResource2 sr = StructuralResource2.getInstance(g);\r
  39                 \r
  40             Resource type = null;\r
  41             try {\r
  42                 type = g.getSingleType(instance);\r
  43             } catch (NoSingleResultException e) {\r
  44                 \r
  45             }\r
  46             if (type == null)\r
  47                 return null;\r
  48             \r
  49             boolean elementPublished = false;\r
  50             Resource publicRelation = null;\r
  51             for (Resource r : g.getObjects(type, l0.DomainOf)) {\r
  52                 if (r.equals(element.getResource()))\r
  53                         elementPublished = true;\r
  54                 if (g.isInstanceOf(r, relation)) {\r
  55                         if (element.getResource().equals(g.getPossibleObject(r, sr.IsBoundBy)))\r
  56                                 publicRelation = r;\r
  57                 }\r
  58             }\r
  59             if (!elementPublished)\r
  60                 return null;\r
  61             return publicRelation;\r
  62         }\r
  63         \r
  64         public static Resource getOrCreatePublishedRelation(WriteGraph g, StructuralResource element, Resource relation) throws DatabaseException{\r
  65                 Resource instance = getContainingInstance(element);\r
  66                 if (instance == null)\r
  67                         return null;\r
  68                 \r
  69                 Layer0 l0 = Layer0.getInstance(g);\r
  70                 StructuralResource2 sr = StructuralResource2.getInstance(g);\r
  71                 \r
  72             Resource type = g.getSingleType(instance);\r
  73             \r
  74             boolean elementPublished = false;\r
  75             Resource publicRelation = null;\r
  76             for (Resource r : g.getObjects(type, l0.DomainOf)) {\r
  77                 if (r.equals(element.getResource()))\r
  78                         elementPublished = true;\r
  79                 if (g.isInstanceOf(r, relation)) {\r
  80                         if (element.getResource().equals(g.getPossibleObject(r, sr.IsBoundBy)))\r
  81                                 publicRelation = r;\r
  82                 }\r
  83             }\r
  84             if (!elementPublished)\r
  85                 return null;\r
  86             if (publicRelation != null)\r
  87                 return publicRelation;\r
  88             \r
  89             publicRelation = g.newResource();\r
  90             // TODO: type ConsistsOf publicRelation, publicRelation ConsistsOf publicInverse ?\r
  91             g.claim(publicRelation, l0.SubrelationOf, l0.IsRelatedTo);\r
  92             g.claim(publicRelation, l0.InstanceOf, relation);\r
  93             g.claim(publicRelation, sr.IsBoundBy, element.getResource());\r
  94             g.claim(type, l0.DomainOf, publicRelation);\r
  95             g.claimLiteral(publicRelation, l0.HasName, g.getRelatedValue(element.getResource(), l0.HasName) +"_" + g.getRelatedValue(relation, l0.HasName)); \r
  96             Resource inverse = g.getPossibleInverse(relation);\r
  97             if (inverse != null) {\r
  98                 Resource publicInverse = g.newResource();\r
  99                 g.claim(publicInverse, l0.SubrelationOf, inverse);\r
 100                 g.claim(publicRelation, l0.InverseOf, publicInverse);\r
 101             }\r
 102             return publicRelation;\r
 103             \r
 104         }\r
 105 }\r