/*
* Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.mdsal.binding.dom.adapter;
import com.google.common.collect.ClassToInstanceMap;
import com.google.common.collect.ImmutableSet;
import java.util.Set;
import org.opendaylight.mdsal.binding.api.DataBroker;
import org.opendaylight.mdsal.binding.api.DataTreeChangeListener;
import org.opendaylight.mdsal.binding.api.DataTreeChangeService;
import org.opendaylight.mdsal.binding.api.DataTreeIdentifier;
import org.opendaylight.mdsal.binding.api.ReadTransaction;
import org.opendaylight.mdsal.binding.api.ReadWriteTransaction;
import org.opendaylight.mdsal.binding.api.TransactionChain;
import org.opendaylight.mdsal.binding.api.TransactionChainListener;
import org.opendaylight.mdsal.binding.api.WriteTransaction;
import org.opendaylight.mdsal.binding.dom.adapter.BindingDOMAdapterBuilder.Factory;
import org.opendaylight.mdsal.dom.api.DOMDataBroker;
import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeService;
import org.opendaylight.mdsal.dom.api.DOMService;
import org.opendaylight.yangtools.concepts.ListenerRegistration;
import org.opendaylight.yangtools.yang.binding.DataObject;
/**
* The DataBrokerImpl simply defers to the DOMDataBroker for all its operations. All transactions and listener
* registrations are wrapped by the DataBrokerImpl to allow binding aware components to use the DataBroker
* transparently.
*
*
* Besides this the DataBrokerImpl and it's collaborators also cache data that is already transformed from the binding
* independent to binding aware format.
*/
public class BindingDOMDataBrokerAdapter extends AbstractForwardedDataBroker implements DataBroker,
DataTreeChangeService {
static final Factory BUILDER_FACTORY = Builder::new;
private final DataTreeChangeService treeChangeService;
public BindingDOMDataBrokerAdapter(final DOMDataBroker domDataBroker, final BindingToNormalizedNodeCodec codec) {
super(domDataBroker, codec);
final DOMDataTreeChangeService domTreeChange = domDataBroker.getExtensions()
.getInstance(DOMDataTreeChangeService.class);
if (domTreeChange != null) {
treeChangeService = BindingDOMDataTreeChangeServiceAdapter.create(codec, domTreeChange);
} else {
treeChangeService = null;
}
}
@Override
public ReadTransaction newReadOnlyTransaction() {
return new BindingDOMReadTransactionAdapter(getDelegate().newReadOnlyTransaction(), getCodec());
}
@Override
public WriteTransaction newWriteOnlyTransaction() {
return new BindingDOMWriteTransactionAdapter<>(getDelegate().newWriteOnlyTransaction(), getCodec());
}
@Override
public ReadWriteTransaction newReadWriteTransaction() {
return new BindingDOMReadWriteTransactionAdapter(getDelegate().newReadWriteTransaction(), getCodec());
}
@Override
public TransactionChain createTransactionChain(final TransactionChainListener listener) {
return new BindingDOMTransactionChainAdapter(getDelegate()::createTransactionChain, getCodec(), listener);
}
@Override
public TransactionChain createMergingTransactionChain(final TransactionChainListener listener) {
return new BindingDOMTransactionChainAdapter(getDelegate()::createMergingTransactionChain, getCodec(),
listener);
}
private static class Builder extends BindingDOMAdapterBuilder {
@Override
public Set extends Class extends DOMService>> getRequiredDelegates() {
return ImmutableSet.of(DOMDataBroker.class);
}
@Override
protected DataBroker createInstance(final BindingToNormalizedNodeCodec codec,
final ClassToInstanceMap delegates) {
final DOMDataBroker domDataBroker = delegates.getInstance(DOMDataBroker.class);
return new BindingDOMDataBrokerAdapter(domDataBroker, codec);
}
}
@Override
public > ListenerRegistration
registerDataTreeChangeListener(
final DataTreeIdentifier treeId, final L listener) {
if (treeChangeService == null) {
throw new UnsupportedOperationException("Underlying data broker does not expose DOMDataTreeChangeService.");
}
return treeChangeService.registerDataTreeChangeListener(treeId, listener);
}
}