monitor/ObtainedExpressionAdapter.java

   1 package org.simantics.modeling.ui.diagram.monitor;\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.db.ReadGraph;\r
   8 import org.simantics.db.RelationContext;\r
   9 import org.simantics.db.Resource;\r
  10 import org.simantics.db.Statement;\r
  11 import org.simantics.db.common.adaption.SimpleContextualAdapter;\r
  12 import org.simantics.db.exception.DatabaseException;\r
  13 import org.simantics.db.layer0.property.OrderedResource;\r
  14 import org.simantics.operation.Layer0X;\r
  15 \r
  16 public class ObtainedExpressionAdapter extends SimpleContextualAdapter<String, RelationContext> {\r
  17 \r
  18         @Override\r
  19         public String adapt(ReadGraph graph, Resource source, RelationContext context) throws DatabaseException {\r
  20                 \r
  21                 Layer0X L0X = Layer0X.getInstance(graph);\r
  22                 ArrayList<OrderedResource> order = new ArrayList<OrderedResource>();\r
  23                 for(Statement stm : graph.getStatements(context.getSubject(), L0X.ObtainsProperty)) {\r
  24                         Integer position = graph.getRelatedValue(stm.getPredicate(), L0X.NaturalNumberOrderRelation, Bindings.INTEGER);\r
  25                         order.add(new OrderedResource(position, stm.getObject()));\r
  26                 }\r
  27                 if (order.size() > 1)\r
  28                         Collections.sort(order);\r
  29                 for(OrderedResource or : order) {\r
  30                         String result = graph.getPossibleRelatedAdapter(or.r, L0X.HasExpression, String.class);\r
  31                         if(result != null) return result;\r
  32                 }\r
  33                 \r
  34                 return null;\r
  35                 \r
  36         }\r
  37 \r
  38 }\r