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

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