2 * Copyright (c) 2019 Pantheon Technologies, 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.data.impl.schema.tree;
10 import static java.util.Objects.requireNonNull;
12 import com.google.common.base.MoreObjects.ToStringHelper;
13 import java.util.Optional;
14 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
15 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
16 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
17 import org.opendaylight.yangtools.yang.data.api.schema.OrderedMapNode;
18 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeConfiguration;
19 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
20 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableMapNodeBuilder;
21 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableOrderedMapNodeBuilder;
22 import org.opendaylight.yangtools.yang.data.impl.schema.tree.NormalizedNodeContainerSupport.MapEntry;
23 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
25 final class MapModificationStrategy extends AbstractNodeContainerModificationStrategy {
26 private static final MapEntry<OrderedMapNode> ORDERED_SUPPORT = new MapEntry<>(OrderedMapNode.class,
27 ChildTrackingPolicy.ORDERED, ImmutableOrderedMapNodeBuilder::create,
28 ImmutableOrderedMapNodeBuilder::create);
29 private static final MapEntry<MapNode> UNORDERED_SUPPORT = new MapEntry<>(MapNode.class,
30 ChildTrackingPolicy.UNORDERED, ImmutableMapNodeBuilder::create, ImmutableMapNodeBuilder::create);
32 private final Optional<ModificationApplyOperation> entryStrategy;
33 private final MapNode emptyNode;
35 private MapModificationStrategy(final MapEntry<?> support, final ListSchemaNode schema,
36 final DataTreeConfiguration treeConfig, final MapNode emptyNode) {
37 super(support, treeConfig);
38 this.emptyNode = requireNonNull(emptyNode);
39 entryStrategy = Optional.of(ListEntryModificationStrategy.of(schema, treeConfig));
42 static MapModificationStrategy of(final ListSchemaNode schema, final DataTreeConfiguration treeConfig) {
43 final MapEntry<?> support;
44 final MapNode emptyNode;
45 if (schema.isUserOrdered()) {
46 support = ORDERED_SUPPORT;
47 emptyNode = ImmutableNodes.orderedMapNode(schema.getQName());
49 support = UNORDERED_SUPPORT;
50 emptyNode = ImmutableNodes.mapNode(schema.getQName());
52 return new MapModificationStrategy(support, schema, treeConfig, emptyNode);
55 // FIXME: this is a hack, originally introduced in
56 // Change-Id: I9dc02a1917f38e8a0d62279843974b9869c48693. DataTreeRoot needs to be fixed up to properly
57 // handle the lookup of through maps.
59 public Optional<ModificationApplyOperation> getChild(final YangInstanceIdentifier.PathArgument identifier) {
60 if (identifier instanceof NodeIdentifierWithPredicates) {
63 // In case we already are in a MapEntry node(for example DataTree rooted at MapEntry)
64 // try to retrieve the child that the identifier should be pointing to from our entryStrategy
65 // if we have one. If the entryStrategy cannot find this child we just return the absent
67 return entryStrategy.get().getChild(identifier);
71 ToStringHelper addToStringAttributes(final ToStringHelper helper) {
72 return super.addToStringAttributes(helper).add("entry", entryStrategy.get());