--- /dev/null
+package org.simantics.databoard.binding.mutable;\r
+\r
+import org.simantics.databoard.binding.Binding;\r
+import org.simantics.databoard.binding.UnionBinding;\r
+import org.simantics.databoard.binding.error.BindingException;\r
+import org.simantics.databoard.type.UnionType;\r
+\r
+/**\r
+ * Binds UnionType to TaggedObject.class\r
+ *\r
+ * @author Toni Kalajainen <toni.kalajainen@vtt.fi>\r
+ */\r
+public class UnionTaggedObjectBinding extends UnionBinding {\r
+\r
+ public UnionTaggedObjectBinding(UnionType type, Binding[] componentBindings)\r
+ {\r
+ this.componentBindings = componentBindings;\r
+ if (type==null) throw new IllegalArgumentException("null arg");\r
+ this.type = type;\r
+ }\r
+\r
+ @Override\r
+ public Object create(int tag, Object value) {\r
+ TaggedObject result = new TaggedObject();\r
+ result.tag = tag;\r
+ result.value = value;\r
+ return result;\r
+ }\r
+ \r
+ @Override\r
+ public void setValue(Object union, int tag, Object value)\r
+ throws BindingException {\r
+ TaggedObject result = (TaggedObject)union;\r
+ result.tag = tag;\r
+ result.value = value;\r
+ }\r
+\r
+ @Override\r
+ public int getTag(Object obj) throws BindingException {\r
+ if (!isInstance(obj)) throw new BindingException("Unexpected class "+obj.getClass().getSimpleName()+", TaggedObject expected");\r
+ TaggedObject to = (TaggedObject) obj;\r
+ return to.tag;\r
+ }\r
+\r
+ @Override\r
+ public Object getValue(Object obj) throws BindingException {\r
+ if (!isInstance(obj)) throw new BindingException("Unexpected class "+obj.getClass().getSimpleName()+", TaggedObject expected");\r
+ TaggedObject to = (TaggedObject) obj;\r
+ return to.value;\r
+ }\r
+\r
+ @Override\r
+ public boolean isInstance(Object obj) {\r
+ return obj instanceof TaggedObject;\r
+ }\r
+ \r
+}\r