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 javax.annotation.Nonnull;
13 import javax.annotation.Nullable;
14 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
17 * A {@link DataTreeModification} which allows creation of a {@link DataTreeModificationCursor}.
20 public interface CursorAwareDataTreeModification extends DataTreeModification, CursorAwareDataTreeSnapshot {
22 * Create a new {@link DataTreeModificationCursor} at specified path. May fail
23 * if specified path does not exist. It is a programming error to use normal
25 * @param path Path at which the cursor is to be anchored
26 * @return A new cursor, or null if the path does not exist.
27 * @throws IllegalStateException if there is another cursor currently open,
28 * or the modification is already {@link #ready()}.
29 * @deprecated Use {@link #openCursor(YangInstanceIdentifier)} instead.
33 @Nullable DataTreeModificationCursor createCursor(@Nonnull YangInstanceIdentifier path);
36 * Create a new {@link DataTreeModificationCursor} at specified path. May fail
37 * if specified path does not exist.
39 * @param path Path at which the cursor is to be anchored
40 * @return A new cursor, or empty if the path does not exist.
41 * @throws IllegalStateException if there is another cursor currently open,
42 * or the modification is already {@link #ready()}.
45 default Optional<? extends DataTreeModificationCursor> openCursor(@Nonnull final YangInstanceIdentifier path) {
46 return Optional.ofNullable(createCursor(path));
50 * Create a new {@link DataTreeModificationCursor} at the root of the modification.
52 * @return A new cursor
53 * @throws IllegalStateException if there is another cursor currently open.
56 default DataTreeModificationCursor openCursor() {
57 return openCursor(YangInstanceIdentifier.EMPTY).get();