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.yangtools.yang.data.api.schema.tree;
10 import java.util.Optional;
11 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
12 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
15 * Read-only snapshot of a {@link DataTree}. The snapshot is stable and isolated,
16 * e.g. data tree changes occurring after the snapshot has been taken are not
17 * visible through the snapshot.
19 public interface DataTreeSnapshot {
21 * Read a particular node from the snapshot.
23 * @param path Path of the node
24 * @return Optional result encapsulating the presence and value of the node
26 Optional<NormalizedNode<?, ?>> readNode(YangInstanceIdentifier path);
29 * Create a new data tree modification based on this snapshot, using the
30 * specified data application strategy.
32 * @return A new data tree modification
34 DataTreeModification newModification();