Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.databoard / src / org / simantics / databoard / binding / mutable / UnionTaggedObjectBinding.java

diff --git a/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/mutable/UnionTaggedObjectBinding.java b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/mutable/UnionTaggedObjectBinding.java
new file mode 100644 (file)
index 0000000..6dd4cdc
--- /dev/null
+++ b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/mutable/UnionTaggedObjectBinding.java
@@ -0,0 +1,57 @@
+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