--- /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;
+
+import com.google.common.base.Preconditions;
+import org.opendaylight.controller.cluster.databroker.actors.dds.ClientTransaction;
+import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransaction;
+
+/**
+ * Abstract base class for concrete {@link DOMStoreTransaction} implementations. It holds a reference to the associated
+ * {@link ClientTransaction}. This abstraction layer is needed to isolate end users, who interact with
+ * {@link DOMStoreTransaction} from the internal implementation.
+ *
+ * @author Robert Varga
+ */
+abstract class AbstractShardedTransaction implements DOMStoreTransaction {
+ private final ClientTransaction tx;
+
+ AbstractShardedTransaction(final ClientTransaction tx) {
+ this.tx = Preconditions.checkNotNull(tx);
+ }
+
+ @Override
+ public final Object getIdentifier() {
+ return tx.getIdentifier();
+ }
+
+ final ClientTransaction transaction() {
+ return tx;
+ }
+}