--- /dev/null
+/*
+ * Copyright (c) 2016 Cisco Systems, Inc. and others. 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
+ */
+package org.opendaylight.controller.cluster.databroker.actors.dds;
+
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
+import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
+
+/**
+ * Base class for internal {@link DOMStoreThreePhaseCommitCohort} implementation. It contains utility constants for
+ * wide reuse.
+ *
+ * @author Robert Varga
+ */
+abstract class AbstractTransactionCommitCohort implements DOMStoreThreePhaseCommitCohort {
+ static final ListenableFuture<Boolean> TRUE_FUTURE = Futures.immediateFuture(Boolean.TRUE);
+ static final ListenableFuture<Void> VOID_FUTURE = Futures.immediateFuture(null);
+
+}