bundles/org.simantics.databoard/src/org/simantics/databoard/binding/impl/UUIDBinding.java

   1 package org.simantics.databoard.binding.impl;\r
   2 \r
   3 import java.util.UUID;\r
   4 \r
   5 import org.simantics.databoard.Bindings;\r
   6 import org.simantics.databoard.Datatypes;\r
   7 import org.simantics.databoard.binding.Binding;\r
   8 import org.simantics.databoard.binding.RecordBinding;\r
   9 import org.simantics.databoard.binding.error.BindingException;\r
  10 import org.simantics.databoard.type.Component;\r
  11 import org.simantics.databoard.type.Datatype;\r
  12 import org.simantics.databoard.type.RecordType;\r
  13 \r
  14 public class UUIDBinding extends RecordBinding {\r
  15 \r
  16         public static final Datatype UUIDType;\r
  17         \r
  18         public UUIDBinding() {\r
  19                 componentBindings = new Binding[2];\r
  20                 componentBindings[0] = Bindings.getBindingUnchecked(Long.class);\r
  21                 componentBindings[1] = Bindings.getBindingUnchecked(Long.class);\r
  22                 type = UUIDType;\r
  23         }\r
  24 \r
  25         @Override\r
  26         public Object create(Object... value) {\r
  27                 return new UUID((Long)value[0], (Long)value[1]);\r
  28         }\r
  29 \r
  30         @Override\r
  31         public Object getComponent(Object obj, int index) {\r
  32                 UUID uuid = (UUID) obj;\r
  33                 switch (index) {\r
  34                 case 0: return uuid.getMostSignificantBits();\r
  35                 case 1: return uuid.getLeastSignificantBits();\r
  36                 default: throw new IllegalArgumentException("index out of range, expected 0..3, got "+index);\r
  37                 }\r
  38         }\r
  39 \r
  40         @Override\r
  41         public Object createPartial() throws BindingException {\r
  42                 return new UUID(0, 0);\r
  43         }\r
  44 \r
  45         @Override\r
  46         public void setComponents(Object obj, Object... value) throws BindingException {\r
  47                 throw new BindingException("Cannot change immutable UUID");\r
  48         }\r
  49         \r
  50         @Override\r
  51         public void setComponent(Object obj, int index, Object value)\r
  52                         throws BindingException {\r
  53                 throw new BindingException("Cannot change immutable UUID");\r
  54         }\r
  55 \r
  56         @Override\r
  57         public boolean isInstance(Object obj) {\r
  58                 return obj instanceof UUID;\r
  59         }\r
  60         \r
  61         @Override\r
  62         public long getLong(Object r, int index) throws BindingException {\r
  63                 UUID uuid = (UUID) r;\r
  64                 switch (index) {\r
  65                         case 0: return uuid.getMostSignificantBits();\r
  66                         case 1: return uuid.getLeastSignificantBits();\r
  67                         default: throw new IllegalArgumentException("index out of range, expected 0..3, got "+index);\r
  68                 }\r
  69         }\r
  70 \r
  71         static {\r
  72                 Component c1 = new Component("mostSigBits", Datatypes.LONG);\r
  73                 Component c2 = new Component("leastSigBits", Datatypes.LONG);\r
  74                 UUIDType = new RecordType(false, c1, c2);\r
  75         }\r
  76         \r
  77 }       \r
  78 \r