2 * Copyright (c) 2020 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.mdsal.binding.dom.adapter.query;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static com.google.common.base.Verify.verifyNotNull;
12 import static java.util.Objects.requireNonNull;
14 import com.google.common.annotations.Beta;
15 import org.eclipse.jdt.annotation.NonNull;
16 import org.opendaylight.mdsal.binding.api.query.QueryExecutor;
17 import org.opendaylight.mdsal.binding.api.query.QueryExpression;
18 import org.opendaylight.mdsal.binding.api.query.QueryResult;
19 import org.opendaylight.mdsal.binding.dom.codec.api.BindingCodecTree;
20 import org.opendaylight.mdsal.binding.dom.codec.api.BindingDataObjectCodecTreeNode;
21 import org.opendaylight.mdsal.dom.spi.query.DOMQueryEvaluator;
22 import org.opendaylight.yangtools.yang.binding.ChildOf;
23 import org.opendaylight.yangtools.yang.binding.DataObject;
24 import org.opendaylight.yangtools.yang.binding.DataRoot;
25 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
26 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
27 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
28 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
29 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
30 import org.opendaylight.yangtools.yang.data.api.schema.builder.DataContainerNodeBuilder;
31 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
32 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
35 public final class SimpleQueryExecutor implements QueryExecutor {
36 private final NormalizedNode root;
38 public SimpleQueryExecutor(final NormalizedNode root) {
39 this.root = requireNonNull(root);
43 public <T extends @NonNull DataObject> QueryResult<T> executeQuery(final QueryExpression<T> query) {
44 checkArgument(query instanceof DefaultQuery, "Unsupported expression %s", query);
45 final DefaultQuery<T> defaultQuery = (DefaultQuery<T>) query;
46 return defaultQuery.toQueryResult(DOMQueryEvaluator.evaluateOnRoot(defaultQuery.asDOMQuery(), root));
49 public static @NonNull Builder builder(final BindingCodecTree codec) {
50 return new Builder(codec);
53 public static final class Builder {
54 private final DataContainerNodeBuilder<NodeIdentifier, ContainerNode> rootBuilder = Builders.containerBuilder()
55 .withNodeIdentifier(new NodeIdentifier(SchemaContext.NAME));
56 private final BindingCodecTree codec;
58 Builder(final BindingCodecTree codec) {
59 this.codec = requireNonNull(codec);
62 public <T extends ChildOf<? extends DataRoot>> @NonNull Builder add(final @NonNull T data) {
63 @SuppressWarnings("unchecked")
64 final BindingDataObjectCodecTreeNode<T> dataCodec = (BindingDataObjectCodecTreeNode<T>)
65 codec.getSubtreeCodec(InstanceIdentifier.create(data.implementedInterface()));
66 rootBuilder.withChild((DataContainerChild) verifyNotNull(dataCodec).serialize(data));
71 * Build an instance of {@link SimpleQueryExecutor}.
73 * @return An {@link SimpleQueryExecutor} instance
75 public @NonNull SimpleQueryExecutor build() {
76 return new SimpleQueryExecutor(rootBuilder.build());