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

   1 /*******************************************************************************\r
   2  * Copyright (c) 2012, 2013 Association for Decentralized Information Management in\r
   3  * Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.objmap.structural.rules.domain;\r
  13 \r
  14 import org.simantics.db.ReadGraph;\r
  15 import org.simantics.db.Resource;\r
  16 import org.simantics.db.WriteGraph;\r
  17 import org.simantics.db.exception.DatabaseException;\r
  18 import org.simantics.db.exception.NoSingleResultException;\r
  19 import org.simantics.layer0.Layer0;\r
  20 import org.simantics.objmap.structural.StructuralResource;\r
  21 import org.simantics.structural.stubs.StructuralResource2;\r
  22 \r
  23 public class StructuralUtils {\r
  24 \r
  25         \r
  26         public static boolean isStructuralInstance(ReadGraph g, Resource r) throws DatabaseException {\r
  27                 StructuralResource2 sr = StructuralResource2.getInstance(g);\r
  28                  if (g.isInstanceOf(r, sr.Component)) {\r
  29                          Resource type = g.getSingleType(r);\r
  30                          return g.isInstanceOf(type, sr.Component);\r
  31                  }\r
  32                  return false;\r
  33                 \r
  34         }\r
  35         \r
  36         public static Resource getContainingInstance(StructuralResource element) {\r
  37                 if (!element.isStructural())\r
  38                         return null;\r
  39                 Resource instance = element.getContext().get(element.getContext().size()-1);\r
  40                 return instance;\r
  41         }\r
  42         \r
  43         public static Resource getPublishedRelation(ReadGraph g, StructuralResource element, Resource relation) throws DatabaseException{\r
  44                 Resource instance = getContainingInstance(element);\r
  45                 if (instance == null)\r
  46                         return null;\r
  47                 \r
  48                 Layer0 l0 = Layer0.getInstance(g);\r
  49                 StructuralResource2 sr = StructuralResource2.getInstance(g);\r
  50                 \r
  51             Resource type = null;\r
  52             try {\r
  53                 type = g.getSingleType(instance);\r
  54             } catch (NoSingleResultException e) {\r
  55                 \r
  56             }\r
  57             if (type == null)\r
  58                 return null;\r
  59             \r
  60             boolean elementPublished = false;\r
  61             Resource publicRelation = null;\r
  62             for (Resource r : g.getObjects(type, l0.DomainOf)) {\r
  63                 if (r.equals(element.getResource()))\r
  64                         elementPublished = true;\r
  65                 if (g.isInstanceOf(r, relation)) {\r
  66                         if (element.getResource().equals(g.getPossibleObject(r, sr.IsBoundBy)))\r
  67                                 publicRelation = r;\r
  68                 }\r
  69             }\r
  70             if (!elementPublished)\r
  71                 return null;\r
  72             return publicRelation;\r
  73         }\r
  74         \r
  75         public static Resource getOrCreatePublishedRelation(WriteGraph g, StructuralResource element, Resource relation) throws DatabaseException{\r
  76                 Resource instance = getContainingInstance(element);\r
  77                 if (instance == null)\r
  78                         return null;\r
  79                 \r
  80                 Layer0 l0 = Layer0.getInstance(g);\r
  81                 StructuralResource2 sr = StructuralResource2.getInstance(g);\r
  82                 \r
  83             Resource type = g.getSingleType(instance);\r
  84             \r
  85             boolean elementPublished = false;\r
  86             Resource publicRelation = null;\r
  87             for (Resource r : g.getObjects(type, l0.DomainOf)) {\r
  88                 if (r.equals(element.getResource()))\r
  89                         elementPublished = true;\r
  90                 if (g.isInstanceOf(r, relation)) {\r
  91                         if (element.getResource().equals(g.getPossibleObject(r, sr.IsBoundBy)))\r
  92                                 publicRelation = r;\r
  93                 }\r
  94             }\r
  95             if (!elementPublished)\r
  96                 return null;\r
  97             if (publicRelation != null)\r
  98                 return publicRelation;\r
  99             \r
 100             publicRelation = g.newResource();\r
 101             // TODO: type ConsistsOf publicRelation, publicRelation ConsistsOf publicInverse ?\r
 102             g.claim(publicRelation, l0.SubrelationOf, l0.IsRelatedTo);\r
 103             g.claim(publicRelation, l0.InstanceOf, relation);\r
 104             g.claim(publicRelation, sr.IsBoundBy, element.getResource());\r
 105             g.claim(type, l0.DomainOf, publicRelation);\r
 106             g.claimLiteral(publicRelation, l0.HasName, g.getRelatedValue(element.getResource(), l0.HasName) +"_" + g.getRelatedValue(relation, l0.HasName)); \r
 107             Resource inverse = g.getPossibleInverse(relation);\r
 108             if (inverse != null) {\r
 109                 Resource publicInverse = g.newResource();\r
 110                 g.claim(publicInverse, l0.SubrelationOf, inverse);\r
 111                 g.claim(publicRelation, l0.InverseOf, publicInverse);\r
 112             }\r
 113             return publicRelation;\r
 114             \r
 115         }\r
 116 }\r