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 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  26
  27 abstract class AbstractForwardedTransaction<T extends DOMDataTreeTransaction> implements Delegator<T>,
  28         Identifiable<Object> {
  29
  30     private final @NonNull AdapterContext adapterContext;
  31     private final @NonNull T delegate;
  32
  33     AbstractForwardedTransaction(final AdapterContext adapterContext, final T delegateTx) {
  34         this.adapterContext = requireNonNull(adapterContext, "Codec must not be null");
  35         this.delegate = requireNonNull(delegateTx, "Delegate must not be null");
  36     }
  37
  38     @Override
  39     public final Object getIdentifier() {
  40         return delegate.getIdentifier();
  41     }
  42
  43     @Override
  44     public final T getDelegate() {
  45         return delegate;
  46     }
  47
  48     protected final <S extends DOMDataTreeTransaction> S getDelegateChecked(final Class<S> txType) {
  49         checkState(txType.isInstance(delegate));
  50         return txType.cast(delegate);
  51     }
  52
  53     protected final AdapterContext adapterContext() {
  54         return adapterContext;
  55     }
  56
  57     protected final <D extends DataObject> @NonNull FluentFuture<Optional<D>> doRead(
  58             final DOMDataTreeReadOperations readOps, final LogicalDatastoreType store,
  59             final InstanceIdentifier<D> path) {
  60         checkArgument(!path.isWildcarded(), "Invalid read of wildcarded path %s", path);
  61
  62         final CurrentAdapterSerializer codec = adapterContext.currentSerializer();
  63         final YangInstanceIdentifier domPath = codec.toYangInstanceIdentifier(path);
  64
  65         return readOps.read(store, domPath)
  66                 .transform(optData -> optData.map(domData -> (D) codec.fromNormalizedNode(domPath, domData).getValue()),
  67                     MoreExecutors.directExecutor());
  68     }
  69
  70     protected final @NonNull FluentFuture<Boolean> doExists(final DOMDataTreeReadOperations readOps,
  71             final LogicalDatastoreType store, final InstanceIdentifier<?> path) {
  72         checkArgument(!path.isWildcarded(), "Invalid exists of wildcarded path %s", path);
  73         return readOps.exists(store, adapterContext.currentSerializer().toYangInstanceIdentifier(path));
  74     }
  75 }