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

   1 package org.simantics.db.layer0.variable;\r
   2 \r
   3 import org.simantics.databoard.binding.Binding;\r
   4 import org.simantics.databoard.type.Datatype;\r
   5 import org.simantics.db.ReadGraph;\r
   6 import org.simantics.db.Resource;\r
   7 import org.simantics.db.exception.DatabaseException;\r
   8 import org.simantics.db.exception.NoSingleResultException;\r
   9 import org.simantics.db.layer0.exception.MissingVariableValueException;\r
  10 import org.simantics.db.layer0.exception.VariableException;\r
  11 \r
  12 public class StandardGraphResourcePropertyVariable extends StandardGraphPropertyVariable {\r
  13         \r
  14         public StandardGraphResourcePropertyVariable(ReadGraph graph, Variable parent, Resource parentResource, Resource property) throws DatabaseException {\r
  15             super(graph, parent, null, parentResource, property);\r
  16         }\r
  17 \r
  18         @Override\r
  19         public <T> T getValue(ReadGraph graph) throws DatabaseException {\r
  20                 if (parentResource == null)\r
  21                         throw new VariableException("Variable is not represented by any resource (URI=" + getPossibleURI(graph) + ").");\r
  22                 try {\r
  23                 return (T)graph.getSingleObject(parentResource, property.predicate);\r
  24                 } catch (NoSingleResultException e) {\r
  25                         System.err.println("No object for " + parentResource + " " + property);\r
  26                         throw new MissingVariableValueException(getPossibleURI(graph));\r
  27                 } \r
  28         }\r
  29 \r
  30         @Override\r
  31         public <T> T getValue(ReadGraph graph, Binding binding) throws DatabaseException {\r
  32                 if (parentResource == null)\r
  33                         throw new VariableException("Variable is not represented by any resource (URI=" + getPossibleURI(graph) + ").");\r
  34                 try {\r
  35             return (T)graph.getSingleObject(parentResource, property.predicate);\r
  36                 } catch (NoSingleResultException e) {\r
  37                         System.err.println("No object for " + parentResource + " " + property);\r
  38                         throw new MissingVariableValueException(getPossibleURI(graph));\r
  39                 } \r
  40         }\r
  41         \r
  42         @Override\r
  43         public Datatype getDatatype(ReadGraph graph) throws DatabaseException {\r
  44             return null;\r
  45         }\r
  46         \r
  47 }\r