1 files changed, 53 insertions, 0 deletions

diff --git a/Solvers/VIATRA-Solver/org.eclipse.viatra.dse/src/org/eclipse/viatra/dse/base/SingletonSetConflictResolver.java b/Solvers/VIATRA-Solver/org.eclipse.viatra.dse/src/org/eclipse/viatra/dse/base/SingletonSetConflictResolver.java
new file mode 100644
index 00000000..8c0a715a
--- /dev/null
+++ b/Solvers/VIATRA-Solver/org.eclipse.viatra.dse/src/org/eclipse/viatra/dse/base/SingletonSetConflictResolver.java
@@ -0,0 +1,53 @@
+/*******************************************************************************
+ * Copyright (c) 2010-2016, Andras Szabolcs Nagy, Zoltan Ujhelyi 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 org.eclipse.viatra.dse.base;
+
+import org.eclipse.viatra.transformation.evm.api.RuleEngine;
+import org.eclipse.viatra.transformation.evm.api.resolver.ChangeableConflictSet;
+import org.eclipse.viatra.transformation.evm.api.resolver.ConflictResolver;
+
+/**
+ * 
+ * @author Andras Szabolcs Nagy
+ *
+ */
+public class SingletonSetConflictResolver implements ConflictResolver {
+
+    protected ChangeableConflictSet conflictSet;
+    protected ConflictResolver conflictResolver;
+    protected ConflictResolver prevConflictResolver;
+    protected RuleEngine ruleEngine;
+
+    public SingletonSetConflictResolver(ConflictResolver conflictResolver) {
+        this.conflictResolver = conflictResolver;
+        conflictSet = conflictResolver.createConflictSet();
+    }
+
+    @Override
+    public ChangeableConflictSet createConflictSet() {
+        return conflictSet;
+    }
+
+    public void changeConflictResolver(ConflictResolver conflictResolver) {
+        ConflictResolver tmp = this.conflictResolver;
+        this.conflictResolver = conflictResolver;
+        prevConflictResolver = tmp;
+        conflictSet = conflictResolver.createConflictSet();
+        ruleEngine.setConflictResolver(this);
+    }
+
+    public void changeConflictResolverBack() {
+        changeConflictResolver(prevConflictResolver);
+    }
+
+    public void setRuleEngine(RuleEngine ruleEngine) {
+        this.ruleEngine = ruleEngine;
+        ruleEngine.setConflictResolver(this);
+    }
+}