opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/DOMForwardedReadOnlyTransaction.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.md.sal.dom.broker.impl;
   9
  10 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  11 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadTransaction;
  12 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
  13 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
  14 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  15
  16 import com.google.common.base.Optional;
  17 import com.google.common.collect.ImmutableMap;
  18 import com.google.common.util.concurrent.ListenableFuture;
  19
  20 /**
  21  *
  22  * Read Only Transaction, which is composed of several
  23  * {@link DOMStoreReadTransaction} transactions. Subtransaction is selected by
  24  * {@link LogicalDatastoreType} type parameter in
  25  * {@link #read(LogicalDatastoreType, InstanceIdentifier)}.
  26  */
  27 class DOMForwardedReadOnlyTransaction extends
  28         AbstractDOMForwardedCompositeTransaction<LogicalDatastoreType, DOMStoreReadTransaction> implements
  29         DOMDataReadTransaction {
  30
  31     protected DOMForwardedReadOnlyTransaction(final Object identifier,
  32             final ImmutableMap<LogicalDatastoreType, DOMStoreReadTransaction> backingTxs) {
  33         super(identifier, backingTxs);
  34     }
  35
  36     @Override
  37     public ListenableFuture<Optional<NormalizedNode<?, ?>>> read(final LogicalDatastoreType store,
  38             final InstanceIdentifier path) {
  39         return getSubtransaction(store).read(path);
  40     }
  41
  42 }