2 * Copyright (c) 2015 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;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static com.google.common.base.Preconditions.checkState;
13 import com.google.common.collect.Iterables;
14 import java.util.Iterator;
15 import java.util.List;
16 import java.util.Optional;
17 import javax.xml.transform.dom.DOMSource;
18 import org.eclipse.jdt.annotation.NonNull;
19 import org.opendaylight.yangtools.concepts.Identifiable;
20 import org.opendaylight.yangtools.yang.common.QName;
21 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
22 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
23 import org.opendaylight.yangtools.yang.data.api.schema.AnyXmlNode;
24 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
25 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListEntryNode;
26 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListNode;
27 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.CollectionNodeBuilder;
28 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.NormalizedNodeBuilder;
29 import org.opendaylight.yangtools.yang.model.api.AnyXmlSchemaNode;
30 import org.opendaylight.yangtools.yang.model.api.AugmentationSchemaNode;
31 import org.opendaylight.yangtools.yang.model.api.AugmentationTarget;
32 import org.opendaylight.yangtools.yang.model.api.CaseSchemaNode;
33 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
34 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
35 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
36 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
37 import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
38 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
39 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
42 * Base strategy for converting an instance identifier into a normalized node structure.
43 * Use provided static methods for generic YangInstanceIdentifier -> NormalizedNode translation in ImmutableNodes.
45 abstract class InstanceIdToNodes<T extends PathArgument> implements Identifiable<T> {
46 private final T identifier;
48 InstanceIdToNodes(final T identifier) {
49 this.identifier = identifier;
53 public final T getIdentifier() {
58 * Build a strategy for the next path argument.
60 * @param child child identifier
61 * @return transformation strategy for a specific child
63 abstract InstanceIdToNodes<?> getChild(PathArgument child);
66 * Convert instance identifier into a NormalizedNode structure.
68 * @param instanceId Instance identifier to transform into NormalizedNodes
69 * @param deepestChild Optional normalized node to be inserted as the last child
70 * @param operation Optional modify operation to be set on the last child
71 * @return NormalizedNode structure corresponding to submitted instance ID
73 abstract @NonNull NormalizedNode<?, ?> create(PathArgument first, Iterator<PathArgument> others,
74 Optional<NormalizedNode<?, ?>> deepestChild);
76 abstract boolean isMixin();
78 private static final class UnkeyedListMixinNormalization extends InstanceIdToCompositeNodes<NodeIdentifier> {
79 private final UnkeyedListItemNormalization innerNode;
81 UnkeyedListMixinNormalization(final ListSchemaNode list) {
82 super(NodeIdentifier.create(list.getQName()));
83 this.innerNode = new UnkeyedListItemNormalization(list);
87 CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> createBuilder(final PathArgument compositeNode) {
88 return Builders.unkeyedListBuilder().withNodeIdentifier(getIdentifier());
92 InstanceIdToNodes<?> getChild(final PathArgument child) {
93 return child.getNodeType().equals(getIdentifier().getNodeType()) ? innerNode : null;
102 private static final class AnyXmlNormalization extends InstanceIdToNodes<NodeIdentifier> {
103 AnyXmlNormalization(final AnyXmlSchemaNode schema) {
104 super(NodeIdentifier.create(schema.getQName()));
108 InstanceIdToNodes<?> getChild(final PathArgument child) {
113 NormalizedNode<?, ?> create(final PathArgument first, final Iterator<PathArgument> others,
114 final Optional<NormalizedNode<?, ?>> deepestChild) {
115 final NormalizedNodeBuilder<NodeIdentifier, DOMSource, AnyXmlNode> builder = Builders.anyXmlBuilder()
116 .withNodeIdentifier(getIdentifier());
117 if (deepestChild.isPresent()) {
118 final NormalizedNode<?, ?> child = deepestChild.get();
119 checkState(child instanceof AnyXmlNode);
120 builder.withValue(((AnyXmlNode) child).getValue());
123 return builder.build();
132 private static Optional<DataSchemaNode> findChildSchemaNode(final DataNodeContainer parent, final QName child) {
133 final Optional<DataSchemaNode> potential = parent.findDataChildByName(child);
134 return potential.isPresent() ? potential : Optional.ofNullable(
135 findChoice(Iterables.filter(parent.getChildNodes(), ChoiceSchemaNode.class), child));
138 static InstanceIdToNodes<?> fromSchemaAndQNameChecked(final DataNodeContainer schema, final QName child) {
139 final Optional<DataSchemaNode> potential = findChildSchemaNode(schema, child);
140 checkArgument(potential.isPresent(),
141 "Supplied QName %s is not valid according to schema %s, potential children nodes: %s", child, schema,
142 schema.getChildNodes());
144 final DataSchemaNode result = potential.get();
145 // We try to look up if this node was added by augmentation
146 if (schema instanceof DataSchemaNode && result.isAugmenting()) {
147 return fromAugmentation(schema, (AugmentationTarget) schema, result);
149 return fromDataSchemaNode(result);
152 private static ChoiceSchemaNode findChoice(final Iterable<ChoiceSchemaNode> choices, final QName child) {
153 for (final ChoiceSchemaNode choice : choices) {
154 for (final CaseSchemaNode caze : choice.getCases().values()) {
155 if (findChildSchemaNode(caze, child).isPresent()) {
164 * Returns a SchemaPathUtil for provided child node
166 * If supplied child is added by Augmentation this operation returns
167 * a SchemaPathUtil for augmentation,
168 * otherwise returns a SchemaPathUtil for child as
169 * call for {@link #fromDataSchemaNode(org.opendaylight.yangtools.yang.model.api.DataSchemaNode)}.
171 private static InstanceIdToNodes<?> fromAugmentation(final DataNodeContainer parent,
172 final AugmentationTarget parentAug, final DataSchemaNode child) {
173 for (final AugmentationSchemaNode aug : parentAug.getAvailableAugmentations()) {
174 final Optional<DataSchemaNode> potential = aug.findDataChildByName(child.getQName());
175 if (potential.isPresent()) {
176 return new InstanceIdToCompositeNodes.AugmentationNormalization(aug, parent);
179 return fromDataSchemaNode(child);
182 static InstanceIdToNodes<?> fromDataSchemaNode(final DataSchemaNode potential) {
183 if (potential instanceof ContainerSchemaNode) {
184 return new InstanceIdToCompositeNodes.ContainerTransformation((ContainerSchemaNode) potential);
185 } else if (potential instanceof ListSchemaNode) {
186 return fromListSchemaNode((ListSchemaNode) potential);
187 } else if (potential instanceof LeafSchemaNode) {
188 return new InstanceIdToSimpleNodes.LeafNormalization((LeafSchemaNode) potential);
189 } else if (potential instanceof ChoiceSchemaNode) {
190 return new InstanceIdToCompositeNodes.ChoiceNodeNormalization((ChoiceSchemaNode) potential);
191 } else if (potential instanceof LeafListSchemaNode) {
192 return fromLeafListSchemaNode((LeafListSchemaNode) potential);
193 } else if (potential instanceof AnyXmlSchemaNode) {
194 return new AnyXmlNormalization((AnyXmlSchemaNode) potential);
199 private static InstanceIdToNodes<?> fromListSchemaNode(final ListSchemaNode potential) {
200 final List<QName> keyDefinition = potential.getKeyDefinition();
201 if (keyDefinition == null || keyDefinition.isEmpty()) {
202 return new UnkeyedListMixinNormalization(potential);
204 return potential.isUserOrdered() ? new InstanceIdToCompositeNodes.OrderedMapMixinNormalization(potential)
205 : new InstanceIdToCompositeNodes.UnorderedMapMixinNormalization(potential);
208 private static InstanceIdToNodes<?> fromLeafListSchemaNode(final LeafListSchemaNode potential) {
209 return potential.isUserOrdered() ? new InstanceIdToCompositeNodes.OrderedLeafListMixinNormalization(potential)
210 : new InstanceIdToCompositeNodes.UnorderedLeafListMixinNormalization(potential);