Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.databoard / src / org / simantics / databoard / type / VariantType.java

diff --git a/bundles/org.simantics.databoard/src/org/simantics/databoard/type/VariantType.java b/bundles/org.simantics.databoard/src/org/simantics/databoard/type/VariantType.java
new file mode 100644 (file)
index 0000000..7bfe7da
--- /dev/null
+++ b/bundles/org.simantics.databoard/src/org/simantics/databoard/type/VariantType.java
@@ -0,0 +1,72 @@
+/*******************************************************************************\r
+ *  Copyright (c) 2010 Association for Decentralized Information Management in\r
+ *  Industry THTH ry.\r
+ *  All rights reserved. This program and the accompanying materials\r
+ *  are made available under the terms of the Eclipse Public License v1.0\r
+ *  which accompanies this distribution, and is available at\r
+ *  http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ *  Contributors:\r
+ *      VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.databoard.type;
+
+import java.util.Set;\r
+\r
+import org.simantics.databoard.accessor.error.ReferenceException;\r
+import org.simantics.databoard.accessor.reference.ChildReference;\r
+import org.simantics.databoard.util.IdentityPair;\r
+
+public class VariantType extends Datatype {
+       
+       public VariantType() {          
+       }
+       \r
+    @Override\r
+    public int getComponentCount() {\r
+       return 0;\r
+    }\r
+    \r
+    @Override\r
+    public Datatype getComponentType(int index) {\r
+       throw new IllegalArgumentException();\r
+    }\r
+    \r
+    @Override\r
+    public Datatype getComponentType(ChildReference path) {\r
+       if (path==null) return this;\r
+       throw new IllegalArgumentException();\r
+    }\r
+       
+       @Override
+       protected boolean deepEquals(Object obj, Set<IdentityPair<Datatype, Datatype>> compareHistory) {
+               if (this==obj) return true;\r
+               if ( !hasEqualMetadata(obj) ) return false;\r
+               return obj instanceof VariantType;              
+       }       
+       
+       @Override
+       public int hashCode() {
+               return 192837465 + super.hashCode();
+       }
+               
+    @Override
+    public <T> T accept(Visitor<T> v) {        
+       return v.visit(this);
+    }
+    
+    @Override
+    public void accept(Visitor1 v, Object obj) {
+           v.visit(this, obj);        
+    }
+    
+       @SuppressWarnings("unchecked")\r
+       @Override\r
+       public <T extends Datatype> T getChildType(ChildReference reference) throws ReferenceException {\r
+               if (reference==null) return (T) this;           \r
+               throw new ReferenceException("Cannot get variant type without instance");\r
+       }\r
+    
+
+}
+