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