2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.controller.md.sal.binding.impl;
10 import com.google.common.base.Optional;
11 import com.google.common.base.Preconditions;
12 import com.google.common.util.concurrent.FluentFuture;
13 import java.util.Map.Entry;
14 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
15 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
16 import org.opendaylight.mdsal.common.api.CommitInfo;
17 import org.opendaylight.yangtools.yang.binding.DataObject;
18 import org.opendaylight.yangtools.yang.binding.Identifiable;
19 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
20 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
21 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
24 * Abstract Base Transaction for transactions which are backed by {@link DOMDataWriteTransaction}.
27 public abstract class AbstractWriteTransaction<T extends DOMDataWriteTransaction> extends
28 AbstractForwardedTransaction<T> {
30 protected AbstractWriteTransaction(final T delegate, final BindingToNormalizedNodeCodec codec) {
31 super(delegate, codec);
34 public final <U extends DataObject> void put(final LogicalDatastoreType store,
35 final InstanceIdentifier<U> path, final U data, final boolean createParents) {
36 Preconditions.checkArgument(!path.isWildcarded(), "Cannot put data into wildcarded path %s", path);
38 final Entry<YangInstanceIdentifier, NormalizedNode<?, ?>> normalized = getCodec().toNormalizedNode(path, data);
40 ensureParentsByMerge(store, normalized.getKey(), path);
42 ensureListParentIfNeeded(store,path,normalized);
45 getDelegate().put(store, normalized.getKey(), normalized.getValue());
48 public final <U extends DataObject> void merge(final LogicalDatastoreType store,
49 final InstanceIdentifier<U> path, final U data,final boolean createParents) {
50 Preconditions.checkArgument(!path.isWildcarded(), "Cannot merge data into wildcarded path %s", path);
52 final Entry<YangInstanceIdentifier, NormalizedNode<?, ?>> normalized = getCodec().toNormalizedNode(path, data);
54 ensureParentsByMerge(store, normalized.getKey(), path);
56 ensureListParentIfNeeded(store,path,normalized);
59 getDelegate().merge(store, normalized.getKey(), normalized.getValue());
63 * Ensures list parent if item is list, otherwise noop.
66 * One of properties of binding specification is that it is imposible
67 * to represent list as a whole and thus it is impossible to write
68 * empty variation of MapNode without creating parent node, with
72 * This actually makes writes such as
74 * put("Nodes", new NodesBuilder().build());
75 * put("Nodes/Node[key]", new NodeBuilder().setKey("key").build());
77 * To result in three DOM operations:
79 * put("/nodes",domNodes);
80 * merge("/nodes/node",domNodeList);
81 * put("/nodes/node/node[key]",domNode);
85 * In order to allow that to be inserted if necessary, if we know
86 * item is list item, we will try to merge empty MapNode or OrderedNodeMap
87 * to ensure list exists.
89 * @param store Data Store type
90 * @param path Path to data (Binding Aware)
91 * @param normalized Normalized version of data to be written
93 private void ensureListParentIfNeeded(final LogicalDatastoreType store, final InstanceIdentifier<?> path,
94 final Entry<YangInstanceIdentifier, NormalizedNode<?, ?>> normalized) {
95 if (Identifiable.class.isAssignableFrom(path.getTargetType())) {
96 YangInstanceIdentifier parentMapPath = normalized.getKey().getParent();
97 Preconditions.checkArgument(parentMapPath != null, "Map path %s does not have a parent", path);
99 NormalizedNode<?, ?> emptyParent = getCodec().getDefaultNodeFor(parentMapPath);
100 getDelegate().merge(store, parentMapPath, emptyParent);
107 * @deprecated Use {@link YangInstanceIdentifier#getParent()} instead.
110 protected static Optional<YangInstanceIdentifier> getParent(final YangInstanceIdentifier child) {
111 return Optional.fromNullable(child.getParent());
115 * Subclasses of this class are required to implement creation of parent
116 * nodes based on behaviour of their underlying transaction.
118 protected abstract void ensureParentsByMerge(LogicalDatastoreType store,
119 YangInstanceIdentifier key, InstanceIdentifier<?> path);
121 protected final void doDelete(final LogicalDatastoreType store,
122 final InstanceIdentifier<?> path) {
123 Preconditions.checkArgument(!path.isWildcarded(), "Cannot delete wildcarded path %s", path);
125 final YangInstanceIdentifier normalized = getCodec().toYangInstanceIdentifierBlocking(path);
126 getDelegate().delete(store, normalized);
129 protected final FluentFuture<? extends CommitInfo> doCommit() {
130 return getDelegate().commit();
133 protected final boolean doCancel() {
134 return getDelegate().cancel();