bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagram/monitor/ObtainedExpressionAdapter.java

   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.AdaptionException;
  13 import org.simantics.db.exception.DatabaseException;
  14 import org.simantics.db.layer0.property.OrderedResource;
  15 import org.simantics.operation.Layer0X;
  16
  17 public class ObtainedExpressionAdapter extends SimpleContextualAdapter<String, RelationContext> {
  18
  19         @Override
  20         public String adapt(ReadGraph graph, Resource source, RelationContext context) throws DatabaseException {
  21
  22                 Layer0X L0X = Layer0X.getInstance(graph);
  23                 ArrayList<OrderedResource> order = new ArrayList<OrderedResource>();
  24                 for(Statement stm : graph.getStatements(context.getSubject(), L0X.ObtainsProperty)) {
  25                         Integer position = graph.getRelatedValue(stm.getPredicate(), L0X.NaturalNumberOrderRelation, Bindings.INTEGER);
  26                         order.add(new OrderedResource(position, stm.getObject()));
  27                 }
  28                 if (order.size() > 1)
  29                         Collections.sort(order);
  30                 for(OrderedResource or : order) {
  31                         String result = graph.getPossibleRelatedAdapter(or.r, L0X.HasExpression, String.class);
  32                         if(result != null) return result;
  33                 }
  34
  35                 throw new AdaptionException("No obtained expression available");
  36
  37         }
  38
  39 }