2 * Copyright (c) 2013 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.model.api;
10 import java.util.Optional;
11 import org.opendaylight.yangtools.yang.model.api.DocumentedNode.WithStatus;
14 * AugmentationSchema represents augment definition. The "augment" statement allows a module or submodule to add
15 * to the schema tree defined in an external module, or the current module and its submodules, and to add to the nodes
16 * from a grouping in a "uses" statement.
18 public interface AugmentationSchemaNode extends DataNodeContainer, NotificationNodeContainer, ActionNodeContainer,
21 * Returns when statement.
24 * If when condition is present node defined by the parent data definition
25 * statement is only valid when the returned XPath
26 * expression conceptually evaluates to "true"
27 * for a particular instance, then the node defined by the parent data
28 * definition statement is valid; otherwise, it is not.
30 * @return XPath condition
32 RevisionAwareXPath getWhenCondition();
35 * Returns augmentation schema path.
37 * @return SchemaPath that identifies a node in the schema tree. This node
38 * is called the augment's target node. The target node MUST be
39 * either a container, list, choice, case, input, output, or
40 * notification node. It is augmented with the nodes defined as
41 * child nodes of this AugmentationSchema.
43 SchemaPath getTargetPath();
46 * Returns Augmentation Definition from which this augmentation is derived
47 * if augmentation was added transitively via augmented uses.
49 * @return Augmentation Definition from which this augmentation is derived
50 * if augmentation was added transitively via augmented uses.
52 Optional<AugmentationSchemaNode> getOriginalDefinition();