2 * Copyright (c) 2021 PANTHEON.tech, s.r.o. 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.stmt;
10 import com.google.common.annotations.Beta;
11 import java.util.Optional;
12 import org.eclipse.jdt.annotation.NonNull;
15 * Common interface implemented by entities which act as the root of the {@code schema tree} and are able to resolve an
16 * {@link SchemaNodeIdentifier} to a {@link SchemaTreeEffectiveStatement}.
19 public interface SchemaTreeRoot {
21 * Find a {@code schema tree} node based on its schema node identifier.
23 * @param path Absolute schema node identifier
24 * @return Found node, or empty
25 * @throws NullPointerException if {@code path} is null
27 @NonNull Optional<SchemaTreeEffectiveStatement<?>> findSchemaTreeNode(@NonNull SchemaNodeIdentifier path);
30 * Find a {@code schema tree} node based on its schema node identifier.
33 * Default implementation defers to {@link #findSchemaTreeNode(SchemaNodeIdentifier)} and filters the result
34 * using provided class.
36 * @param <T> requested node type
37 * @param type Request node class
38 * @param path Absolute schema node identifier
39 * @return Found node, or empty
40 * @throws NullPointerException if any argument is null
42 default <T> @NonNull Optional<T> findSchemaTreeNode(final @NonNull Class<T> type,
43 final @NonNull SchemaNodeIdentifier path) {
44 return DefaultMethodHelpers.filterOptional(findSchemaTreeNode(path), type);