1 files changed, 40 insertions, 0 deletions

diff --git a/subprojects/viatra-runtime-localsearch/src/main/java/tools/refinery/viatra/runtime/localsearch/operations/extend/SingleValueExtendOperationExecutor.java b/subprojects/viatra-runtime-localsearch/src/main/java/tools/refinery/viatra/runtime/localsearch/operations/extend/SingleValueExtendOperationExecutor.java
new file mode 100644
index 00000000..a04ffcca
--- /dev/null
+++ b/subprojects/viatra-runtime-localsearch/src/main/java/tools/refinery/viatra/runtime/localsearch/operations/extend/SingleValueExtendOperationExecutor.java
@@ -0,0 +1,40 @@
+/*******************************************************************************
+ * Copyright (c) 2010-2018, Zoltan Ujhelyi, IncQuery Labs Ltd.
+ * 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.localsearch.operations.extend;
+
+import tools.refinery.viatra.runtime.localsearch.MatchingFrame;
+import tools.refinery.viatra.runtime.localsearch.matcher.ISearchContext;
+import tools.refinery.viatra.runtime.localsearch.operations.ExtendOperationExecutor;
+
+/**
+ * @since 2.0
+ * @noextend This class is not intended to be subclassed by clients.
+ */
+public abstract class SingleValueExtendOperationExecutor<T> extends ExtendOperationExecutor<T> {
+    protected int position;
+    
+    /**
+     * @param position the frame position all values are to be added
+     */
+    public SingleValueExtendOperationExecutor(int position) {
+        super();
+        this.position = position;
+    }
+
+    @Override
+    protected final boolean fillInValue(T newValue, MatchingFrame frame, ISearchContext context) {
+        frame.setValue(position, newValue);
+        return true;
+    }
+
+    @Override
+    protected final void cleanup(MatchingFrame frame, ISearchContext context) {
+        frame.setValue(position, null);
+    }
+}
\ No newline at end of file