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

   1 package org.simantics.db.layer0.variable;\r
   2 \r
   3 import java.util.Map;\r
   4 \r
   5 import org.simantics.databoard.Bindings;\r
   6 import org.simantics.databoard.binding.Binding;\r
   7 import org.simantics.databoard.type.Datatype;\r
   8 import org.simantics.db.ReadGraph;\r
   9 import org.simantics.db.Resource;\r
  10 import org.simantics.db.Statement;\r
  11 import org.simantics.db.WriteGraph;\r
  12 import org.simantics.db.common.request.EnumerationMap;\r
  13 import org.simantics.db.exception.DatabaseException;\r
  14 import org.simantics.layer0.Layer0;\r
  15 \r
  16 public class StandardVariableModifier implements VariableModifier {\r
  17 \r
  18         final private static Binding datatype_binging = Bindings.getBindingUnchecked(Datatype.class);\r
  19         final public static StandardVariableModifier INSTANCE = new StandardVariableModifier();\r
  20 \r
  21         @Override\r
  22         public String isValid(Object newValue) {\r
  23                 return null;\r
  24         }\r
  25 \r
  26         @Override\r
  27         public String isValid(Object newValue, Binding binding) {\r
  28                 return null;\r
  29         }\r
  30 \r
  31         @Override\r
  32         public void modify(WriteGraph graph, Variable variable, Object value) throws DatabaseException {\r
  33                 modify(graph, variable, value, null);\r
  34         }\r
  35 \r
  36         boolean isEnumeration(ReadGraph graph, Resource literal) throws DatabaseException {\r
  37                 \r
  38                 Layer0 L0 = Layer0.getInstance(graph);\r
  39                 Resource parent = graph.getPossibleObject(literal, L0.PartOf);\r
  40                 if(parent == null) return false;\r
  41                 return graph.hasStatement(parent, L0.Enumeration);\r
  42                 \r
  43         }\r
  44         \r
  45         @Override\r
  46         public void modify(WriteGraph graph, Variable variable, Object value, Binding binding) throws DatabaseException {\r
  47 \r
  48                 Variable parent = variable.getParent(graph);\r
  49                 Resource container = parent.getPossibleRepresents(graph);\r
  50                 if(container == null) return;\r
  51                 \r
  52                 Resource property = variable.getPossiblePredicateResource(graph);\r
  53                 if(property == null) return;\r
  54                 \r
  55 //              Variable parent = variable.getPossiblePropertyValue(graph, Variables.PARENT);\r
  56 //              Variable predicate = variable.getPossiblePropertyValue(graph, Variables.PREDICATE);\r
  57                 \r
  58 //              Resource container = parent.getPossiblePropertyValue(graph, Variables.REPRESENTS);\r
  59 //              if(container == null) return;\r
  60 //              Resource property = predicate.getPossiblePropertyValue(graph, Variables.REPRESENTS);\r
  61 //              if(property == null) return;\r
  62         \r
  63                 Statement object = graph.getPossibleStatement(container, property);\r
  64                 if(object == null) return;\r
  65                 \r
  66                 Resource objectResource = object.getObject();\r
  67                 if(isEnumeration(graph, objectResource)) {\r
  68 \r
  69                         Layer0 L0 = Layer0.getInstance(graph);\r
  70                         Resource type = graph.getSingleObject(objectResource, L0.PartOf);\r
  71                         \r
  72                         Map<String, Resource> enumMap = graph.syncRequest(new EnumerationMap(type));\r
  73                         Resource newLiteral = enumMap.get(value);\r
  74                         graph.deny(container, property, objectResource);\r
  75                         graph.claim(container, property, newLiteral);\r
  76                         \r
  77                         return;\r
  78                 }\r
  79                 \r
  80                 if(object.isAsserted(container)) {\r
  81 \r
  82                         Layer0 L0 = Layer0.getInstance(graph);\r
  83                         Resource type = graph.getPossibleType(objectResource, L0.Literal);\r
  84 \r
  85                         Statement dt = graph.getPossibleStatement(objectResource, L0.HasDataType);\r
  86                         Datatype custom = dt.isAsserted(objectResource) ? null : (Datatype)graph.getValue(dt.getObject(), datatype_binging);\r
  87 \r
  88                         objectResource = graph.newResource();\r
  89                         graph.claim(objectResource, L0.InstanceOf, null, type);\r
  90                         graph.claim(container, property, objectResource);\r
  91                         if(custom != null) {\r
  92                                 graph.addLiteral(objectResource, L0.HasDataType, L0.HasDataType_Inverse, L0.DataType, custom, datatype_binging);\r
  93                         }\r
  94                         \r
  95                         \r
  96 //                      Resource usesUnit = graph.getPossibleResource("http://flowbat.fi/Flowbat-0.1/UsesDatatype");\r
  97 //                      if(usesUnit != null) {\r
  98 //                              String unit = graph.getPossibleRelatedValue(oldObject, usesUnit, Bindings.STRING);\r
  99 //                              if(unit != null) {\r
 100 //                                      graph.claimLiteral(objectResource, usesUnit, unit, Bindings.STRING);\r
 101 //                              }\r
 102 //                              Resource isDefault = graph.getResource("http://flowbat.fi/Flowbat-0.1/IsDefault");\r
 103 //                              Resource isUndefined = graph.getResource("http://flowbat.fi/Flowbat-0.1/IsUndefined");\r
 104 //                              graph.claimLiteral(objectResource, isDefault, false, Bindings.BOOLEAN);\r
 105 //                              graph.claimLiteral(objectResource, isUndefined, false, Bindings.BOOLEAN);\r
 106 //                      }\r
 107                         \r
 108                 }\r
 109                 graph.claimValue(objectResource, value, binding);\r
 110                 \r
 111         }\r
 112         \r
 113 \r
 114 }\r