gerrit.simantics Code Review - simantics/platform.git/blob

   1 package org.simantics.modeling.ui.diagram.monitor;
   2
   3 import java.util.ArrayList;
   4 import java.util.Collections;
   5
   6 import org.simantics.databoard.Bindings;
   7 import org.simantics.db.ReadGraph;
   8 import org.simantics.db.RelationContext;
   9 import org.simantics.db.Resource;
  10 import org.simantics.db.Statement;
  11 import org.simantics.db.common.adaption.SimpleContextualAdapter;
  12 import org.simantics.db.exception.DatabaseException;
  13 import org.simantics.db.layer0.property.OrderedResource;
  14 import org.simantics.operation.Layer0X;
  15
  16 public class ObtainedExpressionAdapter extends SimpleContextualAdapter<String, RelationContext> {
  17
  18         @Override
  19         public String adapt(ReadGraph graph, Resource source, RelationContext context) throws DatabaseException {
  20
  21                 Layer0X L0X = Layer0X.getInstance(graph);
  22                 ArrayList<OrderedResource> order = new ArrayList<OrderedResource>();
  23                 for(Statement stm : graph.getStatements(context.getSubject(), L0X.ObtainsProperty)) {
  24                         Integer position = graph.getRelatedValue(stm.getPredicate(), L0X.NaturalNumberOrderRelation, Bindings.INTEGER);
  25                         order.add(new OrderedResource(position, stm.getObject()));
  26                 }
  27                 if (order.size() > 1)
  28                         Collections.sort(order);
  29                 for(OrderedResource or : order) {
  30                         String result = graph.getPossibleRelatedAdapter(or.r, L0X.HasExpression, String.class);
  31                         if(result != null) return result;
  32                 }
  33
  34                 return null;
  35
  36         }
  37
  38 }