2 * Copyright (c) 2015 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 com.google.common.annotations.Beta;
11 import java.util.Optional;
12 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
15 * A {@link DataTreeModification} which allows creation of a {@link DataTreeModificationCursor}.
18 public interface CursorAwareDataTreeModification extends DataTreeModification, CursorAwareDataTreeSnapshot {
20 * Create a new {@link DataTreeModificationCursor} at specified path. May fail
21 * if specified path does not exist.
23 * @param path Path at which the cursor is to be anchored
24 * @return A new cursor, or empty if the path does not exist.
25 * @throws IllegalStateException if there is another cursor currently open,
26 * or the modification is already {@link #ready()}.
29 Optional<? extends DataTreeModificationCursor> openCursor(YangInstanceIdentifier path);
32 * Create a new {@link DataTreeModificationCursor} at the root of the modification.
34 * @return A new cursor
35 * @throws IllegalStateException if there is another cursor currently open.
38 default DataTreeModificationCursor openCursor() {
39 return openCursor(YangInstanceIdentifier.EMPTY).get();