opendaylight/md-sal/sal-dom-compat/src/main/java/org/opendaylight/controller/sal/core/compat/DOMStoreReadTransactionAdapter.java

   1 /*
   2  * Copyright (c) 2018 Pantheon Technologies, s.r.o. 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.sal.core.compat;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.base.Optional;
  13 import com.google.common.collect.ForwardingObject;
  14 import com.google.common.util.concurrent.CheckedFuture;
  15 import com.google.common.util.concurrent.Futures;
  16 import com.google.common.util.concurrent.MoreExecutors;
  17 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  18 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
  19 import org.opendaylight.mdsal.common.api.MappingCheckedFuture;
  20 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  21 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  22
  23 public class DOMStoreReadTransactionAdapter<T extends org.opendaylight.mdsal.dom.spi.store.DOMStoreReadTransaction>
  24         extends ForwardingObject implements DOMStoreReadTransaction {
  25     private final T delegate;
  26
  27     public DOMStoreReadTransactionAdapter(final T delegate) {
  28         this.delegate = requireNonNull(delegate);
  29     }
  30
  31     @Override
  32     protected T delegate() {
  33         return delegate;
  34     }
  35
  36     @Override
  37     public Object getIdentifier() {
  38         return delegate.getIdentifier();
  39     }
  40
  41     @Override
  42     public void close() {
  43         delegate.close();
  44     }
  45
  46     @Override
  47     public CheckedFuture<com.google.common.base.Optional<NormalizedNode<?, ?>>, ReadFailedException> read(
  48             final YangInstanceIdentifier path) {
  49         return MappingCheckedFuture.create(delegate.read(path).transformAsync(
  50             optional -> Futures.immediateFuture(Optional.fromJavaUtil(optional)), MoreExecutors.directExecutor()),
  51             ReadFailedExceptionAdapter.INSTANCE);
  52     }
  53
  54     @Override
  55     public CheckedFuture<Boolean, ReadFailedException> exists(final YangInstanceIdentifier path) {
  56         return MappingCheckedFuture.create(delegate.exists(path), ReadFailedExceptionAdapter.INSTANCE);
  57     }
  58 }