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

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