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

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