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.impl.schema.tree;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static java.util.Objects.requireNonNull;
13 import java.util.Optional;
14 import javax.annotation.Nonnull;
15 import org.eclipse.jdt.annotation.NonNull;
16 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
17 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
18 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodeContainer;
19 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodes;
20 import org.opendaylight.yangtools.yang.data.api.schema.tree.CursorAwareDataTreeSnapshot;
21 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeSnapshotCursor;
22 import org.opendaylight.yangtools.yang.data.api.schema.tree.spi.TreeNode;
23 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
24 import org.opendaylight.yangtools.yang.model.api.SchemaContextProvider;
26 final class InMemoryDataTreeSnapshot extends AbstractCursorAware implements CursorAwareDataTreeSnapshot,
27 SchemaContextProvider {
28 private final @NonNull RootApplyStrategy applyOper;
29 private final @NonNull SchemaContext schemaContext;
30 private final @NonNull TreeNode rootNode;
32 InMemoryDataTreeSnapshot(final SchemaContext schemaContext, final TreeNode rootNode,
33 final RootApplyStrategy applyOper) {
34 this.schemaContext = requireNonNull(schemaContext);
35 this.rootNode = requireNonNull(rootNode);
36 this.applyOper = requireNonNull(applyOper);
39 TreeNode getRootNode() {
44 public SchemaContext getSchemaContext() {
49 public Optional<NormalizedNode<?, ?>> readNode(final YangInstanceIdentifier path) {
50 return NormalizedNodes.findNode(rootNode.getData(), path);
54 public InMemoryDataTreeModification newModification() {
55 return new InMemoryDataTreeModification(this, applyOper);
59 public DataTreeSnapshotCursor createCursor(@Nonnull final YangInstanceIdentifier path) {
60 final Optional<NormalizedNode<?, ?>> maybeRoot = NormalizedNodes.findNode(rootNode.getData(), path);
61 if (!maybeRoot.isPresent()) {
65 final NormalizedNode<?, ?> root = maybeRoot.get();
66 checkArgument(root instanceof NormalizedNodeContainer, "Child %s is not a container", path);
67 return openCursor(new InMemoryDataTreeSnapshotCursor(this, path, (NormalizedNodeContainer<?, ?, ?>)root));
71 public String toString() {
72 return rootNode.getSubtreeVersion().toString();