bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/property/Properties.java

   1 package org.simantics.db.layer0.property;\r
   2 \r
   3 import java.util.ArrayList;\r
   4 import java.util.Collections;\r
   5 \r
   6 import org.simantics.databoard.Bindings;\r
   7 import org.simantics.databoard.binding.Binding;\r
   8 import org.simantics.db.ReadGraph;\r
   9 import org.simantics.db.Resource;\r
  10 import org.simantics.db.Statement;\r
  11 import org.simantics.db.exception.DatabaseException;\r
  12 import org.simantics.operation.Layer0X;\r
  13 \r
  14 /**\r
  15  * @author Antti Villberg\r
  16  * TODO: consider removing since this doesn't seem to be used.\r
  17  */\r
  18 public class Properties {\r
  19         \r
  20         public static <T> T getPossibleRelatedValue(ReadGraph graph, Resource resource, Resource relation, Binding binding) throws DatabaseException {\r
  21                 \r
  22                 T result = graph.getPossibleRelatedValue(resource, relation, binding);\r
  23                 if(result != null) return result;\r
  24                 else {\r
  25                         \r
  26                     Layer0X L0X = Layer0X.getInstance(graph);\r
  27                         ArrayList<OrderedResource> order = new ArrayList<OrderedResource>();\r
  28                         for(Statement stm : graph.getStatements(resource, L0X.ObtainsProperty)) {\r
  29                                 Integer position = graph.getRelatedValue(stm.getPredicate(), L0X.NaturalNumberOrderRelation, Bindings.INTEGER);\r
  30                                 order.add(new OrderedResource(position, stm.getObject()));\r
  31                         }\r
  32                         Collections.sort(order);\r
  33                         for(OrderedResource or : order) {\r
  34                                 result = getPossibleRelatedValue(graph, or.r, relation, binding);\r
  35                                 if(result != null) return result;\r
  36                         }\r
  37                         \r
  38                         return null;\r
  39                         \r
  40                 }\r
  41                 \r
  42         }\r
  43 \r
  44         public static <T> T getPossibleRelatedAdapter(ReadGraph graph, Resource resource, Resource relation, Class<T> clazz) throws DatabaseException {\r
  45 \r
  46                 T result = graph.getPossibleRelatedAdapter(resource, relation, clazz);\r
  47                 if(result != null) return result;\r
  48                 else {\r
  49                         \r
  50                     Layer0X L0X = Layer0X.getInstance(graph);\r
  51                         ArrayList<OrderedResource> order = new ArrayList<OrderedResource>();\r
  52                         for(Statement stm : graph.getStatements(resource, L0X.ObtainsProperty)) {\r
  53                                 Integer position = graph.getRelatedValue(stm.getPredicate(), L0X.NaturalNumberOrderRelation, Bindings.INTEGER);\r
  54                                 order.add(new OrderedResource(position, stm.getObject()));\r
  55                         }\r
  56                         Collections.sort(order);\r
  57                         for(OrderedResource or : order) {\r
  58                                 result = getPossibleRelatedAdapter(graph, or.r, relation, clazz);\r
  59                                 if(result != null) return result;\r
  60                         }\r
  61                         \r
  62                         return null;\r
  63                         \r
  64                 }\r
  65                 \r
  66         }\r
  67 \r
  68 }\r