binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/BindingDOMDataTreeListenerAdapter.java

   1 /*
   2  * Copyright (c) 2015 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 java.util.Objects.requireNonNull;
  11
  12 import com.google.common.collect.Maps;
  13 import java.util.ArrayList;
  14 import java.util.Collection;
  15 import java.util.List;
  16 import java.util.Map;
  17 import java.util.Map.Entry;
  18 import org.opendaylight.mdsal.binding.api.DataTreeIdentifier;
  19 import org.opendaylight.mdsal.binding.api.DataTreeListener;
  20 import org.opendaylight.mdsal.binding.api.DataTreeListeningException;
  21 import org.opendaylight.mdsal.binding.api.DataTreeModification;
  22 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  23 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
  24 import org.opendaylight.mdsal.dom.api.DOMDataTreeListener;
  25 import org.opendaylight.mdsal.dom.api.DOMDataTreeListeningException;
  26 import org.opendaylight.yangtools.yang.binding.DataObject;
  27 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  28 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  29 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
  30
  31 public class BindingDOMDataTreeListenerAdapter extends AbstractBindingAdapter<DataTreeListener>
  32         implements DOMDataTreeListener {
  33
  34     private final LogicalDatastoreType store;
  35
  36     protected BindingDOMDataTreeListenerAdapter(final DataTreeListener delegate,
  37             final BindingToNormalizedNodeCodec codec, final LogicalDatastoreType store) {
  38         super(codec, delegate);
  39         this.store = requireNonNull(store, "store");
  40     }
  41
  42     @Override
  43     public void onDataTreeChanged(final Collection<DataTreeCandidate> domChanges,
  44             final Map<DOMDataTreeIdentifier, NormalizedNode<?, ?>> domSubtrees) {
  45
  46         final Collection<DataTreeModification<?>> changes = toBinding(domChanges);
  47         final Map<DataTreeIdentifier<?>, DataObject> subtrees = toBinding(domSubtrees);
  48
  49         getDelegate().onDataTreeChanged(changes, subtrees);
  50     }
  51
  52     private Map<DataTreeIdentifier<?>, DataObject> toBinding(
  53             final Map<DOMDataTreeIdentifier, NormalizedNode<?, ?>> domSubtrees) {
  54         // FIXME: Introduce lazy translating map
  55         final Map<DataTreeIdentifier<?>, DataObject> ret = Maps.newHashMapWithExpectedSize(domSubtrees.size());
  56         for (final Entry<DOMDataTreeIdentifier, NormalizedNode<?, ?>> domEntry : domSubtrees.entrySet()) {
  57             final Entry<InstanceIdentifier<?>, DataObject> bindingEntry =
  58                     getCodec().fromNormalizedNode(domEntry.getKey().getRootIdentifier(), domEntry.getValue());
  59             ret.put(DataTreeIdentifier.create(store, bindingEntry.getKey()), bindingEntry.getValue());
  60         }
  61         return ret;
  62     }
  63
  64     @SuppressWarnings("unchecked")
  65     private Collection<DataTreeModification<?>> toBinding(final Collection<DataTreeCandidate> domChanges) {
  66         return Collection.class.cast(LazyDataTreeModification.from(getCodec(), domChanges, store));
  67     }
  68
  69     @Override
  70     public void onDataTreeFailed(final Collection<DOMDataTreeListeningException> causes) {
  71         List<DataTreeListeningException> bindingCauses = new ArrayList<>(causes.size());
  72         for (DOMDataTreeListeningException cause : causes) {
  73             bindingCauses.add(mapException(cause));
  74         }
  75
  76         getDelegate().onDataTreeFailed(bindingCauses);
  77     }
  78
  79     private static DataTreeListeningException mapException(final DOMDataTreeListeningException cause) {
  80         // FIXME: Extend logic
  81         return new DataTreeListeningException(cause.getMessage(), cause);
  82     }
  83 }