bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/VariableBean.java

   1 package org.simantics.db.layer0.variable;
   2
   3 import org.simantics.databoard.util.Bean;
   4 import org.simantics.db.ReadGraph;
   5 import org.simantics.db.Resource;
   6 import org.simantics.db.exception.DatabaseException;
   7 import org.simantics.db.service.SerialisationSupport;
   8
   9 public class VariableBean extends Bean {
  10
  11         final public long context;
  12         final public String rvi;
  13         final transient public Variable variable;
  14
  15         public VariableBean(ReadGraph graph, Variable variable) throws DatabaseException {
  16
  17                 Variable context = Variables.getPossibleContext(graph, variable);
  18                 if(context != null) {
  19                         RVI rvi = variable.getRVI(graph);
  20                         Resource contextResource = context.getRepresents(graph);
  21                         this.context = contextResource.getResourceId();
  22                         this.rvi = rvi.toString();
  23                 } else {
  24                         this.context = 0;
  25                         this.rvi = variable.getURI(graph);
  26                 }
  27
  28                 this.variable = variable;
  29
  30         }
  31
  32         public Variable getVariable(ReadGraph graph) throws DatabaseException {
  33                 if(context != 0) {
  34                         Resource contextResource = graph.getService(SerialisationSupport.class).getResource(context);
  35                         Variable context = Variables.getVariable(graph, contextResource);
  36                         RVI rvi = RVI.fromResourceFormat(graph, this.rvi);
  37                         return rvi.resolve(graph, context);
  38                 } else {
  39                         return Variables.getVariable(graph, rvi);
  40                 }
  41         }
  42
  43         public Variable getVariable() {
  44                 return variable;
  45         }
  46
  47 }