1 files changed, 47 insertions, 0 deletions

diff --git a/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/emf/DynamicEMFQueryRuntimeContext.java b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/emf/DynamicEMFQueryRuntimeContext.java
new file mode 100644
index 00000000..a6da213e
--- /dev/null
+++ b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/emf/DynamicEMFQueryRuntimeContext.java
@@ -0,0 +1,47 @@
+/*******************************************************************************
+ * Copyright (c) 2010-2015, Bergmann Gabor, Istvan Rath and Daniel Varro
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-v20.html.
+ * 
+ * SPDX-License-Identifier: EPL-2.0
+ *******************************************************************************/
+package tools.refinery.viatra.runtime.emf;
+
+import org.apache.log4j.Logger;
+import tools.refinery.viatra.runtime.base.api.NavigationHelper;
+import tools.refinery.viatra.runtime.matchers.tuple.Tuple;
+import tools.refinery.viatra.runtime.matchers.tuple.Tuples;
+
+/**
+ * In dynamic EMF mode, we need to make sure that EEnum literal constants and values returned by eval() expressions 
+ *      are canonicalized in the same way as enum literals from the EMF model.
+ * 
+ * <p> This canonicalization is a one-way mapping, so 
+ *      {@link #unwrapElement(Object)} and {@link #unwrapTuple(Object)} remain NOPs.
+ * 
+ * @author Bergmann Gabor
+ *
+ */
+public class DynamicEMFQueryRuntimeContext extends EMFQueryRuntimeContext {
+
+    public DynamicEMFQueryRuntimeContext(NavigationHelper baseIndex, Logger logger, EMFScope emfScope) {
+        super(baseIndex, logger, emfScope);
+    }   
+    
+    @Override
+    public Object wrapElement(Object externalElement) {
+        return baseIndex.toCanonicalValueRepresentation(externalElement);
+    }
+    
+    @Override
+    public Tuple wrapTuple(Tuple externalElements) {
+        Object[] elements = externalElements.getElements();
+        for (int i=0; i< elements.length; ++i)
+            elements[i] = wrapElement(elements[i]);
+        return Tuples.flatTupleOf(elements);
+    }
+    
+    
+    
+}