binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/BindingDOMDataTreeChangeServiceAdapter.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 org.opendaylight.mdsal.binding.api.ClusteredDataTreeChangeListener;
  11 import org.opendaylight.mdsal.binding.api.DataTreeChangeListener;
  12 import org.opendaylight.mdsal.binding.api.DataTreeChangeService;
  13 import org.opendaylight.mdsal.binding.api.DataTreeIdentifier;
  14 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  15 import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeService;
  16 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
  17 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  18 import org.opendaylight.yangtools.yang.binding.DataObject;
  19 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  20
  21 /**
  22  * Adapter exposing Binding {@link DataTreeChangeService} and wrapping a {@link DOMDataTreeChangeService} and is
  23  * responsible for translation and instantiation of {@link BindingDOMDataTreeChangeListenerAdapter} adapters.
  24  *
  25  * <p>
  26  * Each registered {@link DataTreeChangeListener} is wrapped using adapter and registered directly to DOM service.
  27  */
  28 final class BindingDOMDataTreeChangeServiceAdapter extends AbstractBindingAdapter<DOMDataTreeChangeService>
  29         implements DataTreeChangeService {
  30
  31     private BindingDOMDataTreeChangeServiceAdapter(final BindingToNormalizedNodeCodec codec,
  32             final DOMDataTreeChangeService dataTreeChangeService) {
  33         super(codec, dataTreeChangeService);
  34     }
  35
  36     static DataTreeChangeService create(final BindingToNormalizedNodeCodec codec,
  37             final DOMDataTreeChangeService dataTreeChangeService) {
  38         return new BindingDOMDataTreeChangeServiceAdapter(codec, dataTreeChangeService);
  39     }
  40
  41     @Override
  42     public <T extends DataObject, L extends DataTreeChangeListener<T>> ListenerRegistration<L>
  43             registerDataTreeChangeListener(final DataTreeIdentifier<T> treeId, final L listener) {
  44         final DOMDataTreeIdentifier domIdentifier = toDomTreeIdentifier(treeId);
  45         final LogicalDatastoreType storeType = treeId.getDatastoreType();
  46         final BindingDOMDataTreeChangeListenerAdapter<T> domListener =
  47                 listener instanceof ClusteredDataTreeChangeListener
  48                         ? new BindingClusteredDOMDataTreeChangeListenerAdapter<>(
  49                                 getCodec(), (ClusteredDataTreeChangeListener<T>) listener, storeType)
  50                         : new BindingDOMDataTreeChangeListenerAdapter<>(getCodec(), listener, storeType);
  51
  52         final ListenerRegistration<BindingDOMDataTreeChangeListenerAdapter<T>> domReg =
  53                 getDelegate().registerDataTreeChangeListener(domIdentifier, domListener);
  54         return new BindingDataTreeChangeListenerRegistration<>(listener, domReg);
  55     }
  56
  57     private DOMDataTreeIdentifier toDomTreeIdentifier(final DataTreeIdentifier<?> treeId) {
  58         final YangInstanceIdentifier domPath = getCodec().toYangInstanceIdentifierBlocking(treeId.getRootIdentifier());
  59         return new DOMDataTreeIdentifier(treeId.getDatastoreType(), domPath);
  60     }
  61 }