X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.databoard%2Fsrc%2Forg%2Fsimantics%2Fdataboard%2Ftype%2FVariantType.java;fp=bundles%2Forg.simantics.databoard%2Fsrc%2Forg%2Fsimantics%2Fdataboard%2Ftype%2FVariantType.java;h=7bfe7da01cda149f84f17787957009c55104049d;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

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
index 000000000..7bfe7da01
--- /dev/null
+++ b/bundles/org.simantics.databoard/src/org/simantics/databoard/type/VariantType.java
@@ -0,0 +1,72 @@
+/*******************************************************************************
+ *  Copyright (c) 2010 Association for Decentralized Information Management in
+ *  Industry THTH ry.
+ *  All rights reserved. This program and the accompanying materials
+ *  are made available under the terms of the Eclipse Public License v1.0
+ *  which accompanies this distribution, and is available at
+ *  http://www.eclipse.org/legal/epl-v10.html
+ *
+ *  Contributors:
+ *      VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.databoard.type;
+
+import java.util.Set;
+
+import org.simantics.databoard.accessor.error.ReferenceException;
+import org.simantics.databoard.accessor.reference.ChildReference;
+import org.simantics.databoard.util.IdentityPair;
+
+public class VariantType extends Datatype {
+	
+	public VariantType() {		
+	}
+	
+    @Override
+    public int getComponentCount() {
+    	return 0;
+    }
+    
+    @Override
+    public Datatype getComponentType(int index) {
+    	throw new IllegalArgumentException();
+    }
+    
+    @Override
+    public Datatype getComponentType(ChildReference path) {
+    	if (path==null) return this;
+    	throw new IllegalArgumentException();
+    }
+	
+	@Override
+	protected boolean deepEquals(Object obj, Set<IdentityPair<Datatype, Datatype>> compareHistory) {
+		if (this==obj) return true;
+		if ( !hasEqualMetadata(obj) ) return false;
+		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")
+	@Override
+	public <T extends Datatype> T getChildType(ChildReference reference) throws ReferenceException {
+		if (reference==null) return (T) this;		
+		throw new ReferenceException("Cannot get variant type without instance");
+	}
+    
+
+}
+