binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/AbstractForwardedTransaction.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.mdsal.binding.dom.adapter;
   9
  10 import com.google.common.base.Optional;
  11 import com.google.common.base.Preconditions;
  12 import com.google.common.util.concurrent.FluentFuture;
  13 import com.google.common.util.concurrent.Futures;
  14 import com.google.common.util.concurrent.MoreExecutors;
  15 import org.opendaylight.mdsal.common.api.AsyncTransaction;
  16 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  17 import org.opendaylight.mdsal.dom.api.DOMDataTreeReadTransaction;
  18 import org.opendaylight.yangtools.concepts.Delegator;
  19 import org.opendaylight.yangtools.concepts.Identifiable;
  20 import org.opendaylight.yangtools.yang.binding.DataObject;
  21 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  22 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  23 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  24
  25 abstract class AbstractForwardedTransaction<T extends AsyncTransaction<YangInstanceIdentifier, NormalizedNode<?, ?>>>
  26         implements Delegator<T>, Identifiable<Object> {
  27
  28     private final T delegate;
  29     private final BindingToNormalizedNodeCodec codec;
  30
  31     AbstractForwardedTransaction(final T delegateTx, final BindingToNormalizedNodeCodec codec) {
  32         this.delegate = Preconditions.checkNotNull(delegateTx, "Delegate must not be null");
  33         this.codec = Preconditions.checkNotNull(codec, "Codec must not be null");
  34     }
  35
  36
  37     @Override
  38     public final  Object getIdentifier() {
  39         return delegate.getIdentifier();
  40     }
  41
  42     @Override
  43     public final  T getDelegate() {
  44         return delegate;
  45     }
  46
  47     @SuppressWarnings("unchecked")
  48     protected final <S extends AsyncTransaction<YangInstanceIdentifier, NormalizedNode<?, ?>>> S getDelegateChecked(
  49             final Class<S> txType) {
  50         Preconditions.checkState(txType.isInstance(delegate));
  51         return (S) delegate;
  52     }
  53
  54     protected final BindingToNormalizedNodeCodec getCodec() {
  55         return codec;
  56     }
  57
  58     protected final <D extends DataObject> FluentFuture<Optional<D>> doRead(
  59             final DOMDataTreeReadTransaction readTx, final LogicalDatastoreType store,
  60             final InstanceIdentifier<D> path) {
  61         Preconditions.checkArgument(!path.isWildcarded(), "Invalid read of wildcarded path %s", path);
  62
  63         return FluentFuture.from(Futures.transform(readTx.read(store, codec.toYangInstanceIdentifierBlocking(path)),
  64                 codec.deserializeFunction(path), MoreExecutors.directExecutor()));
  65     }
  66 }