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 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.util.concurrent.FluentFuture;
  15 import com.google.common.util.concurrent.MoreExecutors;
  16 import java.util.Optional;
  17 import org.eclipse.jdt.annotation.NonNull;
  18 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  19 import org.opendaylight.mdsal.dom.api.DOMDataTreeReadOperations;
  20 import org.opendaylight.mdsal.dom.api.DOMDataTreeTransaction;
  21 import org.opendaylight.yangtools.concepts.Delegator;
  22 import org.opendaylight.yangtools.concepts.Identifiable;
  23 import org.opendaylight.yangtools.yang.binding.DataObject;
  24 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  25
  26 abstract class AbstractForwardedTransaction<T extends DOMDataTreeTransaction> implements Delegator<T>,
  27         Identifiable<Object> {
  28
  29     private final @NonNull BindingToNormalizedNodeCodec codec;
  30     private final @NonNull T delegate;
  31
  32     AbstractForwardedTransaction(final T delegateTx, final BindingToNormalizedNodeCodec codec) {
  33         this.delegate = requireNonNull(delegateTx, "Delegate must not be null");
  34         this.codec = requireNonNull(codec, "Codec must not be null");
  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     protected final <S extends DOMDataTreeTransaction> S getDelegateChecked(final Class<S> txType) {
  48         checkState(txType.isInstance(delegate));
  49         return txType.cast(delegate);
  50     }
  51
  52     protected final BindingToNormalizedNodeCodec getCodec() {
  53         return codec;
  54     }
  55
  56     protected final <D extends DataObject> @NonNull FluentFuture<Optional<D>> doRead(
  57             final DOMDataTreeReadOperations readOps, final LogicalDatastoreType store,
  58             final InstanceIdentifier<D> path) {
  59         checkArgument(!path.isWildcarded(), "Invalid read of wildcarded path %s", path);
  60
  61         return readOps.read(store, codec.toYangInstanceIdentifierBlocking(path))
  62                 .transform(codec.getCodecRegistry().deserializeFunction(path)::apply, MoreExecutors.directExecutor());
  63     }
  64
  65     protected final @NonNull FluentFuture<Boolean> doExists(final DOMDataTreeReadOperations readOps,
  66             final LogicalDatastoreType store, final InstanceIdentifier<?> path) {
  67         checkArgument(!path.isWildcarded(), "Invalid exists of wildcarded path %s", path);
  68         return readOps.exists(store, codec.toYangInstanceIdentifierBlocking(path));
  69     }
  70 }