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

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