bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/adapter/LiteralVariableStringAdapter.java

   1 package org.simantics.db.layer0.adapter;
   2
   3 import org.simantics.common.format.Formatter;
   4 import org.simantics.databoard.Bindings;
   5 import org.simantics.db.AsyncReadGraph;
   6 import org.simantics.db.ReadGraph;
   7 import org.simantics.db.Resource;
   8 import org.simantics.db.adaption.Adapter;
   9 import org.simantics.db.exception.DatabaseException;
  10 import org.simantics.db.layer0.variable.Variable;
  11 import org.simantics.db.procedure.AsyncProcedure;
  12 import org.simantics.db.request.Read;
  13 import org.simantics.layer0.Layer0;
  14
  15 public class LiteralVariableStringAdapter implements Adapter<String, Variable> {
  16
  17     @Override
  18     public void adapt(AsyncReadGraph g, final Resource source, final Variable variable, final AsyncProcedure<String> procedure) {
  19         g.asyncRequest(new Read<String>() {
  20
  21                         @Override
  22                         public String perform(ReadGraph graph) throws DatabaseException {
  23
  24                                 Resource literal = variable.getPossibleRepresents(graph);
  25                                 String label = graph.getPossibleRelatedAdapter(literal, graph.getService(Layer0.class).HasLabel, String.class);
  26                                 if(label != null) return label;
  27                                 String name = graph.getPossibleRelatedValue(literal, graph.getService(Layer0.class).HasName, Bindings.STRING);
  28                                 if(name != null) return name;
  29
  30                                 Object value = variable.getValue(graph);
  31                                 Formatter formatter = graph.getPossibleContextualAdapter(literal, variable, Variable.class, Formatter.class);
  32                                 if(formatter != null) {
  33                                         return formatter.format(value);
  34                                 } else {
  35                                         return value == null ? "<no value>" : value.toString();
  36                                 }
  37
  38                         }
  39
  40         }, procedure);
  41     }
  42
  43 }