binding2/mdsal-binding2-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/javav2/dom/adapter/spi/AbstractForwardedTransaction.java

   1 /*
   2  * Copyright (c) 2017 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.mdsal.binding.javav2.dom.adapter.spi;
   9
  10 import com.google.common.annotations.Beta;
  11 import com.google.common.base.Preconditions;
  12 import com.google.common.util.concurrent.FluentFuture;
  13 import com.google.common.util.concurrent.MoreExecutors;
  14 import java.util.Optional;
  15 import javax.annotation.Nonnull;
  16 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.BindingToNormalizedNodeCodec;
  17 import org.opendaylight.mdsal.binding.javav2.spec.base.InstanceIdentifier;
  18 import org.opendaylight.mdsal.binding.javav2.spec.base.TreeNode;
  19 import org.opendaylight.mdsal.common.api.AsyncTransaction;
  20 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  21 import org.opendaylight.mdsal.dom.api.DOMDataTreeReadTransaction;
  22 import org.opendaylight.yangtools.concepts.Delegator;
  23 import org.opendaylight.yangtools.concepts.Identifiable;
  24 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  25 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  26
  27 /**
  28  * Abstract class for forwards transaction and codec for serialize/deserialize DOM and Binding data.
  29  *
  30  * @param <T>
  31  *            - type of asynchronous transaction
  32  */
  33 @Beta
  34 public abstract class AbstractForwardedTransaction<
  35         T extends AsyncTransaction<YangInstanceIdentifier, NormalizedNode<?, ?>>>
  36         implements Delegator<T>, Identifiable<Object> {
  37
  38     private final T delegate;
  39     private final BindingToNormalizedNodeCodec codec;
  40
  41     public AbstractForwardedTransaction(final T delegateTx, final BindingToNormalizedNodeCodec codec) {
  42         this.delegate = Preconditions.checkNotNull(delegateTx, "Delegate must not be null");
  43         this.codec = Preconditions.checkNotNull(codec, "Codec must not be null");
  44     }
  45
  46     @Nonnull
  47     @Override
  48     public final Object getIdentifier() {
  49         return delegate.getIdentifier();
  50     }
  51
  52     @Override
  53     public final T getDelegate() {
  54         return delegate;
  55     }
  56
  57     @SuppressWarnings("unchecked")
  58     protected final <S extends AsyncTransaction<YangInstanceIdentifier, NormalizedNode<?, ?>>> S
  59             getDelegateChecked(final Class<S> txType) {
  60         Preconditions.checkState(txType.isInstance(delegate));
  61         return (S) delegate;
  62     }
  63
  64     protected final BindingToNormalizedNodeCodec getCodec() {
  65         return codec;
  66     }
  67
  68     protected final <D extends TreeNode> FluentFuture<Optional<D>> doRead(
  69             final DOMDataTreeReadTransaction readTx, final LogicalDatastoreType store,
  70             final InstanceIdentifier<D> path) {
  71         Preconditions.checkArgument(!path.isWildcarded(), "Invalid read of wildcarded path %s", path);
  72
  73         return readTx.read(store, codec.toYangInstanceIdentifierBlocking(path))
  74             .transform(codec.deserializeFunction(path)::apply, MoreExecutors.directExecutor());
  75     }
  76 }