opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/md/sal/binding/impl/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.controller.md.sal.binding.impl;
   9
  10 import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
  11 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  12 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadTransaction;
  13 import org.opendaylight.yangtools.concepts.Delegator;
  14 import org.opendaylight.yangtools.concepts.Identifiable;
  15 import org.opendaylight.yangtools.yang.binding.DataObject;
  16 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
  17 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  18
  19 import com.google.common.base.Optional;
  20 import com.google.common.base.Preconditions;
  21 import com.google.common.util.concurrent.Futures;
  22 import com.google.common.util.concurrent.ListenableFuture;
  23
  24
  25 abstract class AbstractForwardedTransaction<T extends AsyncTransaction<InstanceIdentifier, NormalizedNode<?, ?>>>
  26         implements Delegator<T>, Identifiable<Object> {
  27
  28     private final T delegate;
  29     private final BindingToNormalizedNodeCodec codec;
  30
  31     public 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<InstanceIdentifier, NormalizedNode<?, ?>>> S getDelegateChecked(final Class<S> txType) {
  49         Preconditions.checkState(txType.isInstance(delegate));
  50         return (S) delegate;
  51     }
  52
  53     protected final BindingToNormalizedNodeCodec getCodec() {
  54         return codec;
  55     }
  56
  57     protected final ListenableFuture<Optional<DataObject>> doRead(final DOMDataReadTransaction readTx,
  58             final LogicalDatastoreType store, final org.opendaylight.yangtools.yang.binding.InstanceIdentifier<?> path) {
  59         return Futures.transform(readTx.read(store, codec.toNormalized(path)), codec.deserializeFunction(path));
  60     }
  61 }