2 * Copyright (c) 2016 Brocade Communications 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.cluster.datastore.util;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static com.google.common.base.Preconditions.checkState;
12 import static com.google.common.base.Verify.verifyNotNull;
14 import com.google.common.annotations.Beta;
15 import java.util.Optional;
16 import javax.annotation.concurrent.NotThreadSafe;
17 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
18 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
19 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
20 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModificationCursor;
23 * Abstract {@link DataTreeModificationCursor} which tracks the current path. Subclasses can get the current path
24 * via {@link #current()}.
26 * @author Thomas Pantelis
30 public abstract class AbstractDataTreeModificationCursor implements DataTreeModificationCursor {
31 private YangInstanceIdentifier current = YangInstanceIdentifier.EMPTY;
33 protected final YangInstanceIdentifier current() {
38 public final void enter(final PathArgument child) {
39 current = current.node(child);
43 public final void enter(final PathArgument... path) {
44 for (PathArgument arg : path) {
50 public final void enter(final Iterable<PathArgument> path) {
51 for (PathArgument arg : path) {
57 public final void exit() {
58 checkState(!current.isEmpty());
59 current = verifyNotNull(current.getParent());
63 public final void exit(final int depth) {
64 checkArgument(depth >= 0);
66 YangInstanceIdentifier next = current;
67 for (int i = 0; i < depth; ++i) {
68 next = next.getParent();
69 checkState(next != null);
76 public final Optional<NormalizedNode<?, ?>> readNode(final PathArgument child) {
77 throw new UnsupportedOperationException("Not implemented");