bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/SCLValueAccessor.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.WriteGraph;\r
   7 import org.simantics.db.exception.DatabaseException;\r
   8 import org.simantics.scl.runtime.SCLContext;\r
   9 import org.simantics.scl.runtime.function.Function1;\r
  10 import org.simantics.scl.runtime.function.Function2;\r
  11 import org.simantics.scl.runtime.function.Function3;\r
  12 \r
  13 public class SCLValueAccessor implements ValueAccessor {\r
  14 \r
  15         private final Function1<Variable,Object> getValue1;\r
  16         private final Function2<Variable,Binding,Object> getValue2;\r
  17         private final Function2<Variable,Object,Object> setValue2;\r
  18         private final Function3<Variable,Object,Binding,Object> setValue3;\r
  19         private final Function1<Variable,Datatype> getDatatype;\r
  20         \r
  21         public SCLValueAccessor(Function1<Variable, Object> getValue1, Function2<Variable, Binding, Object> getValue2,\r
  22                         Function2<Variable, Object, Object> setValue2, Function3<Variable, Object, Binding, Object> setValue3,\r
  23                         Function1<Variable, Datatype> getDatatype) {\r
  24                 this.getValue1 = getValue1;\r
  25                 this.getValue2 = getValue2;\r
  26                 this.setValue2 = setValue2;\r
  27                 this.setValue3 = setValue3;\r
  28                 this.getDatatype = getDatatype;\r
  29         }\r
  30 \r
  31         @Override\r
  32         public Object getValue(ReadGraph graph, Variable context) throws DatabaseException {\r
  33         SCLContext sclContext = SCLContext.getCurrent();\r
  34         Object oldGraph = sclContext.put("graph", graph);\r
  35         try {\r
  36             return getValue1.apply(context);\r
  37         } catch (Throwable t) {\r
  38             throw new DatabaseException(t);\r
  39         } finally {\r
  40             sclContext.put("graph", oldGraph);\r
  41         }\r
  42         }\r
  43 \r
  44         @Override\r
  45         public Object getValue(ReadGraph graph, Variable context, Binding binding) throws DatabaseException {\r
  46         SCLContext sclContext = SCLContext.getCurrent();\r
  47         Object oldGraph = sclContext.put("graph", graph);\r
  48         try {\r
  49             return getValue2.apply(context, binding);\r
  50         } catch (Throwable t) {\r
  51             throw new DatabaseException(t);\r
  52         } finally {\r
  53             sclContext.put("graph", oldGraph);\r
  54         }\r
  55         }\r
  56 \r
  57         @Override\r
  58         public void setValue(WriteGraph graph, Variable context, Object value) throws DatabaseException {\r
  59         SCLContext sclContext = SCLContext.getCurrent();\r
  60         Object oldGraph = sclContext.put("graph", graph);\r
  61         try {\r
  62             setValue2.apply(context, value);\r
  63         } catch (Throwable t) {\r
  64             throw new DatabaseException(t);\r
  65         } finally {\r
  66             sclContext.put("graph", oldGraph);\r
  67         }\r
  68         }\r
  69 \r
  70         @Override\r
  71         public void setValue(WriteGraph graph, Variable context, Object value, Binding binding) throws DatabaseException {\r
  72         SCLContext sclContext = SCLContext.getCurrent();\r
  73         Object oldGraph = sclContext.put("graph", graph);\r
  74         try {\r
  75             setValue3.apply(context, value, binding);\r
  76         } catch (Throwable t) {\r
  77             throw new DatabaseException(t);\r
  78         } finally {\r
  79             sclContext.put("graph", oldGraph);\r
  80         }\r
  81         }\r
  82 \r
  83         @Override\r
  84         public Datatype getDatatype(ReadGraph graph, Variable context) throws DatabaseException {\r
  85         SCLContext sclContext = SCLContext.getCurrent();\r
  86         Object oldGraph = sclContext.put("graph", graph);\r
  87         try {\r
  88             return getDatatype.apply(context);\r
  89         } catch (Throwable t) {\r
  90             throw new DatabaseException(t);\r
  91         } finally {\r
  92             sclContext.put("graph", oldGraph);\r
  93         }\r
  94         }\r
  95 \r
  96 }\r