2 * Copyright (c) 2014 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.tree.impl;
10 import static java.util.Objects.requireNonNull;
11 import static org.opendaylight.yangtools.yang.data.tree.impl.MandatoryDescendant.getAugIdentifierOfChild;
13 import com.google.common.collect.ImmutableList;
14 import com.google.common.collect.ImmutableList.Builder;
15 import java.util.Optional;
16 import org.opendaylight.yangtools.concepts.Immutable;
17 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
18 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
19 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
20 import org.opendaylight.yangtools.yang.data.spi.tree.TreeNode;
21 import org.opendaylight.yangtools.yang.data.tree.api.DataTreeConfiguration;
22 import org.opendaylight.yangtools.yang.data.tree.api.TreeType;
23 import org.opendaylight.yangtools.yang.data.util.DataSchemaContextNode;
24 import org.opendaylight.yangtools.yang.model.api.AugmentationSchemaNode;
25 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
26 import org.opendaylight.yangtools.yang.model.api.CopyableNode;
27 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
28 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
29 import org.opendaylight.yangtools.yang.model.api.ElementCountConstraintAware;
30 import org.opendaylight.yangtools.yang.model.api.MandatoryAware;
31 import org.slf4j.Logger;
32 import org.slf4j.LoggerFactory;
34 // TODO: would making this Serializable be useful (for Functions and similar?)
35 final class MandatoryLeafEnforcer implements Immutable {
36 private static final Logger LOG = LoggerFactory.getLogger(MandatoryLeafEnforcer.class);
38 private final ImmutableList<MandatoryDescendant> mandatoryNodes;
40 private MandatoryLeafEnforcer(final ImmutableList<MandatoryDescendant> mandatoryNodes) {
41 this.mandatoryNodes = requireNonNull(mandatoryNodes);
44 static Optional<MandatoryLeafEnforcer> forContainer(final DataNodeContainer schema,
45 final DataTreeConfiguration treeConfig) {
46 if (!treeConfig.isMandatoryNodesValidationEnabled()) {
47 return Optional.empty();
50 final Builder<MandatoryDescendant> builder = ImmutableList.builder();
51 final boolean isAugmentingNode = schema instanceof CopyableNode && ((CopyableNode) schema).isAugmenting();
52 findMandatoryNodes(builder, YangInstanceIdentifier.empty(), schema, treeConfig.getTreeType(), isAugmentingNode);
53 final ImmutableList<MandatoryDescendant> mandatoryNodes = builder.build();
54 return mandatoryNodes.isEmpty() ? Optional.empty() : Optional.of(new MandatoryLeafEnforcer(mandatoryNodes));
57 void enforceOnData(final NormalizedNode data) {
58 mandatoryNodes.forEach(node -> node.enforceOnData(data));
61 void enforceOnTreeNode(final TreeNode tree) {
62 enforceOnData(tree.getData());
65 private static void findMandatoryNodes(final Builder<MandatoryDescendant> builder,
66 final YangInstanceIdentifier id, final DataNodeContainer schema, final TreeType type,
67 final boolean augmentedSubtree) {
68 for (final DataSchemaNode child : schema.getChildNodes()) {
69 if (SchemaAwareApplyOperation.belongsToTree(type, child)) {
70 if (child instanceof ContainerSchemaNode) {
71 final ContainerSchemaNode container = (ContainerSchemaNode) child;
72 if (!container.isPresenceContainer()) {
73 if (!augmentedSubtree) {
74 // this container is not part of augmented subtree.
75 final boolean parentSchemaAugmenting = schema instanceof CopyableNode
76 && ((CopyableNode)schema).isAugmenting();
77 if (container.isAugmenting() && !parentSchemaAugmenting) {
78 // the container is augmenting, but the parent schema is not. Meaning this is the root
79 // of the augmentation (the augmented subtree starts here). The container has to be
80 // represented by AugmentationID and the whole subtree needs to be based on it.
81 final AugmentationSchemaNode aug = getAugIdentifierOfChild(schema, child);
82 findMandatoryNodes(builder, id.node(DataSchemaContextNode
83 .augmentationIdentifierFrom(aug)).node(NodeIdentifier.create(container.getQName())),
84 container, type, true);
88 // the container is either:
89 // - not in an augmented subtree and not augmenting
90 // - in an augmented subtree
91 // in both cases just append the NodeID to the ongoing ID and continue the search.
92 findMandatoryNodes(builder, id.node(NodeIdentifier.create(container.getQName())),
93 container, type, augmentedSubtree);
96 boolean needEnforce = child instanceof MandatoryAware && ((MandatoryAware) child).isMandatory();
97 if (!needEnforce && child instanceof ElementCountConstraintAware) {
98 needEnforce = ((ElementCountConstraintAware) child).getElementCountConstraint()
100 final Integer min = constraint.getMinElements();
101 return min != null && min > 0;
103 .orElse(Boolean.FALSE);
106 final MandatoryDescendant desc = MandatoryDescendant.create(id, schema, child,
108 LOG.debug("Adding mandatory child {}", desc);