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.common.api.data.ReadFailedException;
  12 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadOnlyTransaction;
  13 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
  14 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  15 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  16
  17 import com.google.common.base.Optional;
  18 import com.google.common.collect.ImmutableMap;
  19 import com.google.common.util.concurrent.CheckedFuture;
  20
  21 /**
  22  *
  23  * Read Only Transaction, which is composed of several
  24  * {@link DOMStoreReadTransaction} transactions. Subtransaction is selected by
  25  * {@link LogicalDatastoreType} type parameter in
  26  * {@link #read(LogicalDatastoreType, YangInstanceIdentifier)}.
  27  */
  28 class DOMForwardedReadOnlyTransaction extends
  29         AbstractDOMForwardedCompositeTransaction<LogicalDatastoreType, DOMStoreReadTransaction> implements
  30         DOMDataReadOnlyTransaction {
  31
  32     protected DOMForwardedReadOnlyTransaction(final Object identifier,
  33             final ImmutableMap<LogicalDatastoreType, DOMStoreReadTransaction> backingTxs) {
  34         super(identifier, backingTxs);
  35     }
  36
  37     @Override
  38     public CheckedFuture<Optional<NormalizedNode<?,?>>, ReadFailedException> read(
  39             final LogicalDatastoreType store, final YangInstanceIdentifier path) {
  40         return getSubtransaction(store).read(path);
  41     }
  42
  43     @Override public CheckedFuture<Boolean, ReadFailedException> exists(
  44         LogicalDatastoreType store,
  45         YangInstanceIdentifier path) {
  46         return getSubtransaction(store).exists(path);
  47     }
  48
  49     @Override
  50     public void close() {
  51         closeSubtransactions();
  52     }
  53
  54 }