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 com.google.common.base.Optional;
12 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
13 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
14 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
15 import org.opendaylight.yangtools.yang.data.api.schema.tree.IncorrectDataStructureException;
16 import org.opendaylight.yangtools.yang.data.api.schema.tree.ModificationType;
17 import org.opendaylight.yangtools.yang.data.api.schema.tree.spi.TreeNode;
18 import org.opendaylight.yangtools.yang.data.api.schema.tree.spi.TreeNodeFactory;
19 import org.opendaylight.yangtools.yang.data.api.schema.tree.spi.Version;
20 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
22 abstract class ValueNodeModificationStrategy<T extends DataSchemaNode> extends SchemaAwareApplyOperation {
23 private final Class<? extends NormalizedNode<?, ?>> nodeClass;
24 private final T schema;
26 protected ValueNodeModificationStrategy(final T schema, final Class<? extends NormalizedNode<?, ?>> nodeClass) {
28 this.nodeClass = nodeClass;
32 protected void verifyWrittenStructure(final NormalizedNode<?, ?> writtenValue) {
33 checkArgument(nodeClass.isInstance(writtenValue), "Node should must be of type %s", nodeClass);
37 public Optional<ModificationApplyOperation> getChild(final PathArgument child) {
38 throw new UnsupportedOperationException("Node " + schema.getPath()
39 + "is leaf type node. Child nodes not allowed");
43 protected TreeNode applySubtreeChange(final ModifiedNode modification,
44 final TreeNode currentMeta, final Version version) {
45 throw new UnsupportedOperationException("Node " + schema.getPath()
46 + "is leaf type node. Subtree change is not allowed.");
50 protected TreeNode applyMerge(final ModifiedNode modification, final TreeNode currentMeta,
51 final Version version) {
52 // Just overwrite whatever was there
53 modification.resolveModificationType(ModificationType.WRITE);
54 return applyWrite(modification, null, version);
58 protected TreeNode applyWrite(final ModifiedNode modification,
59 final Optional<TreeNode> currentMeta, final Version version) {
60 return TreeNodeFactory.createTreeNodeRecursively(modification.getWrittenValue(), version);
64 protected void checkSubtreeModificationApplicable(final YangInstanceIdentifier path, final NodeModification modification,
65 final Optional<TreeNode> current) throws IncorrectDataStructureException {
66 throw new IncorrectDataStructureException(path, "Subtree modification is not allowed.");